阅读说明：本技术 一种基于粪便资源化利用的生物处理系统 (Biological treatment system based on excrement and urine resource utilization ) 是由 孟行健 魏道春 王玉峰 李孝振 于 2021-08-18 设计创作，主要内容包括：本发明涉及生物环保领域,特别是涉及一种基于粪便资源化利用的生物处理系统。该生物处理系统包括：破碎机、第一输送机、发酵罐、屏蔽泵、固液分离池、第二输送机、干燥箱、混料机、过滤灭菌设备、配液设备,造粒机以及控制器。发酵罐用于添加粪便干粉和稀释后的人畜尿液得到混合浆料,然后在浆料中接种发酵菌群,并完成浆料的发酵过程。固液分离池用于对发酵后的浆料进行自然沉降和挤压过滤,得到分离后的固形物和混合液。配液设备制备的造粒溶液中接种的目标菌种包括放线菌、枯草芽孢杆菌、木霉菌；本发明解决了现有的粪便难以直接利用；堆肥处理过程容易造成水资源和大气污染,而且处理过程效率低,处理周期长的问题。(The invention relates to the field of biological environmental protection, in particular to a biological treatment system based on excrement resource utilization. The biological treatment system includes: the device comprises a crusher, a first conveyor, a fermentation tank, a shield pump, a solid-liquid separation tank, a second conveyor, a drying box, a mixer, a filtering and sterilizing device, a liquid preparation device, a granulator and a controller. The fermentation tank is used for adding excrement dry powder and diluted human and animal urine to obtain mixed slurry, then inoculating fermentation flora in the slurry and completing the fermentation process of the slurry. The solid-liquid separation tank is used for naturally settling, extruding and filtering the fermented slurry to obtain a separated solid matter and a mixed liquid. Target strains inoculated in the granulating solution prepared by the liquid preparation equipment comprise actinomycetes, bacillus subtilis and trichoderma; the invention solves the problem that the prior excrement is difficult to be directly utilized; the composting treatment process easily causes water resource and air pollution, and the treatment process has low efficiency and long treatment period.)

1. A biological treatment system based on excrement resource utilization is characterized in that the biological treatment system is used for rapidly producing organic biofertilizer by utilizing poultry or livestock excrement; the biological treatment system sequentially comprises the following steps according to the process flow of processing treatment:

a crusher for crushing the collected dry poultry or livestock manure to obtain dry manure powder;

a first conveyor for conveying the dry powder of faeces to a fermentation tank;

the fermentation tank is used for adding the excrement dry powder and diluted human and animal urine to obtain mixed slurry, then inoculating fermentation flora in the slurry and completing the fermentation process of the slurry; the fermentation flora contains bacillus megatherium, saccharomycetes, rhodopseudomonas, lactobacillus acidophilus and acinetobacter, and the initial content ratio of the bacillus megatherium to the lactobacillus acidophilus in the inoculation stage is 15: (6-10): (2-3): (3-5): 1; controlling the pH value of the slurry to be 6.2-6.5 in the fermentation process;

the shielding pump is used for pumping the slurry after the fermentation in the fermentation tank is finished to a solid-liquid separation tank;

the solid-liquid separation tank is internally provided with an extrusion filtering mechanism; the solid-liquid separation tank is used for naturally settling, extruding and filtering the fermented slurry to obtain a separated solid matter and a separated mixed solution;

the second conveyor is used for conveying the solid matters separated in the solid-liquid separation process to a drying box;

the drying box is used for carrying out high-temperature drying treatment on the solid matters separated by the solid-liquid separation tank;

the mixer is used for fully stirring and mixing the calcium carbonate, the plant ash, the talcum powder, the solid matters and the sodium dihydrogen phosphate or the disodium hydrogen phosphate according to a preset feeding ratio to obtain granulation powder;

a filtering and sterilizing device for filtering the mixed liquid separated in the solid-liquid separation and sterilizing the filtered filtrate at high temperature;

the liquid preparation equipment is used for obtaining the sterilized solution treated by the filtering and sterilizing equipment, then diluting the solution, inoculating the compound flora after dilution, adding nutrient substances into the inoculated solution, shaking and culturing for a short time so that the total content of target strains in the cultured solution is not less than 150 hundred million/ml, and obtaining a granulation solution; the inoculated target strains comprise actinomycetes, bacillus subtilis and trichoderma; also comprises one or more of azotobacter, silicate bacteria, photosynthetic bacteria, saccharomycetes and bacillus polymyxa; and

the granulator is used for mixing the granulation powder and the granulation solution according to the mass ratio capable of completing granulation to obtain wet materials, and granulating the wet materials to obtain the organic bio-fertilizer; and

and the controller is used for controlling the running states of the crusher, the first conveyor, the shielding pump, the extrusion filtering mechanism, the second conveyor, the drying box, the mixer, the filtering and sterilization equipment and the granulator so as to automatically realize the continuous process flow of crushing, mixing pulp, microbial fermentation, solid-liquid separation, mixing material, filtering, liquid preparation and granulation.

2. The biological treatment system based on fecal resource utilization according to claim 1, characterized in that: the crusher with a drying function is selected as the crusher, and the particle size of the crushed excrement dry powder is not less than 80 meshes.

3. The biological treatment system based on fecal resource utilization according to claim 1, characterized in that: in the fermentation tank, the dilution ratio of human and animal urine is at least 1: 8; the feeding mass ratio of the excrement dry powder to the diluted human and animal urine is 1: 4-1: 5; controlling the temperature in the fermentation process to be 20-35 ℃; and the complete fermentation time of the slurry in the fermentation tank is 8-15 d.

4. The biological treatment system based on fecal resource utilization according to claim 3, characterized in that: the fermentation tank also comprises a stirring device and an aeration device, wherein the aeration device is used for supplementing oxygen to the slurry in the fermentation tank, and the aeration treatment period of the aeration device is 12 h; the oxygen content in the slurry after each aeration is not lower than 2 mg/L; the stirring device is used for stirring the slurry in the fermentation tank for 2 hours in a stirring period.

5. The biological treatment system based on fecal resource utilization according to claim 1, characterized in that: in the drying box, the treatment temperature in the high-temperature drying process is 90-120 ℃, and the drying treatment time of the solid in the drying box is not shorter than 2 hours; and an ultraviolet lamp for sterilization is also arranged in the drying box.

6. The biological treatment system based on fecal resource utilization according to claim 1, characterized in that: in the mixer, according to the mass part ratio, the granulating powder comprises 40-50 parts of solid matter, 8-10 parts of calcium carbonate, 5-12 parts of plant ash, 4-9 parts of talcum powder and the balance of sodium dihydrogen phosphate or disodium hydrogen phosphate, wherein the feeding ratio of the sodium dihydrogen phosphate or the disodium hydrogen phosphate meets the requirement that the nitrogen-phosphorus ratio in terms of elements in the obtained mixture is not lower than 4: 1; the grain sizes of all raw materials in the granulating powder are not less than 80 meshes.

7. The biological treatment system based on fecal resource utilization according to claim 1, characterized in that: introducing part of the sterilized solution treated by the filtering and sterilizing equipment into the liquid preparation equipment for dilution and preparation of a granulating solution; the rest part is re-introduced into the fermentation tank to replace part of the diluted human and animal urine for use.

8. The biological treatment system based on fecal resource utilization according to claim 1, characterized in that: the sterilization treatment process of the filtration sterilization equipment comprises the following steps:

and sealing the filtrate in a closed container, and carrying out water bath treatment on the closed container at the temperature of not less than 85 ℃ for not less than 12h to obtain the sterilized solution.

9. The biological treatment system based on fecal resource utilization according to claim 1, characterized in that: the granulation solution is also added with a complex enzyme preparation, algin and sodium starch octenyl succinate before being mixed with granulation powder for granulation; the compound enzyme preparation comprises azotase, lignin peroxidase, polysaccharase and cellulase; the granulator is a granulator with a cooling system, and the process temperature of materials in the granulating stage of the granulator is not higher than 55 ℃.

10. The biological treatment system based on fecal resource utilization according to claim 1, characterized in that: the treatment equipment and the conveying equipment in the biological treatment system both adopt closed structures; the biological treatment system also comprises an odor digestion system, wherein the odor digestion system is used for collecting volatile odor gas generated in each device in the whole flow of the system and performing deodorization and harmless treatment on the odor gas.

Technical Field

The invention relates to the field of biological environmental protection, in particular to a biological treatment system based on excrement resource utilization.

Background

The chicken and the pork are two kinds of edible meat with the largest consumption amount, and the broiler chicken and the live pig are two kinds of meat animals with the largest livestock quantity at present. A large amount of excrement is generated in the breeding process of the broilers and the pigs. According to incomplete statistics, the daily chicken manure yield can reach 10 tons in a large farm with 10 thousands of chickens. The daily excrement yield of each 100kg of the weight of the live pig reaches 8.36kg, and the annual yield exceeds 3051 kg. These stools are not if disposable. Not only can pollute the environment, but also can cause the spread of viruses or microorganisms, and influence the work of disease prevention and epidemic prevention of the farm.

The existing excrement treatment method mainly produces organic fertilizer and feed. The produced feed mainly comprises fish feed. The main mode for producing organic fertilizer is open-air composting. Composting is necessary because: the feces of poultry and livestock usually contain a large amount of incompletely digested metabolites, including part of microorganisms and metabolic toxins, and thus cannot be directly utilized. Application of untreated chicken manure to the soil may not only cause microbial infection, but also produce root burn due to heat generated by fermentation. After the excrement is naturally composted and fermented in an open composting field, part of organic matters in the excrement are sufficiently digested and treated by microorganisms; then can be used after simple sterilization and disinfection; the fertilizer is applied to soil as an organic fertilizer for soil improvement and topdressing.

Traditional composting can effectively utilize the excrement of poultry and livestock; but water resource pollution is easily caused by reasons of precipitation, surface runoff and the like in the open composting process. Meanwhile, the odor generated by the composting yard can cause serious pollution to the surrounding atmospheric environment and influence the health of surrounding residents. This is not compatible with the increasing environmental requirements at present. In addition, the traditional composting process has longer treatment process and low treatment efficiency; but also is susceptible to factors such as season and weather, temperature, etc. The fermentation process in the cold season is further prolonged.

Disclosure of Invention

For this reason, it is necessary to address the problem that the existing feces are difficult to directly utilize; the composting treatment process easily causes water resource and air pollution, and the treatment process has low efficiency and long treatment period. Provides a biological treatment system based on excrement resource utilization.

The invention provides a biological treatment system based on excrement resource utilization, which is mainly used for quickly producing organic biofertilizer by utilizing poultry or livestock excrement. The biological treatment system sequentially comprises the following steps according to the process flow of processing treatment: the device comprises a crusher, a first conveyor, a fermentation tank, a shield pump, a solid-liquid separation tank, a second conveyor, a drying box, a mixer, a filtering and sterilizing device, a liquid preparation device, a granulator and a controller.

Wherein, the crusher is used for crushing the collected and dried poultry or livestock manure to obtain dry manure powder.

The first conveyor is used for conveying the dry powder of the excrement into a fermentation tank.

The fermentation tank is used for adding excrement dry powder and diluted human and animal urine to obtain mixed slurry, then inoculating fermentation flora in the slurry and completing the fermentation process of the slurry. The fermentation flora contains bacillus megatherium, saccharomycetes, rhodopseudomonas, lactobacillus acidophilus and acinetobacter, and the initial content ratio of the five in the inoculation stage is 15: (6-10): (2-3): (3-5): 1. and controlling the pH value of the slurry to be 6.2-6.5 in the fermentation process.

The shielding pump is used for pumping the slurry after the fermentation in the fermentation tank is finished to a solid-liquid separation tank.

An extrusion filtering mechanism is arranged in the solid-liquid separation tank. The solid-liquid separation tank is used for naturally settling, extruding and filtering the fermented slurry to obtain a separated solid matter and a mixed liquid.

The second conveyor is used for conveying the separated solid matters in the solid-liquid separation to a drying box. The drying box is used for carrying out high-temperature drying treatment on the solid matters separated out from the solid-liquid separation tank.

The mixer is used for fully stirring and mixing calcium carbonate, plant ash, talcum powder, solid and sodium dihydrogen phosphate or disodium hydrogen phosphate according to a preset feeding ratio to obtain granulation powder.

The filtering and sterilizing equipment is used for filtering the mixed liquid separated in the solid-liquid separation process and sterilizing the filtered filtrate at high temperature.

And the liquid preparation equipment is used for obtaining the sterilized solution treated by the filtering and sterilizing equipment, then diluting the solution, inoculating the compound flora after dilution, adding nutrient substances into the inoculated solution, shaking and culturing for a short time so that the total content of the target strains in the cultured solution is not less than 150 hundred million/ml, and obtaining the granulating solution. Wherein the inoculated target strains comprise actinomycetes, bacillus subtilis and trichoderma; also comprises one or more of azotobacter, silicate bacteria, photosynthetic bacteria, yeast and bacillus polymyxa.

The granulator is used for mixing the granulation powder and the granulation solution according to the mass ratio capable of completing granulation to obtain wet materials, and granulating the wet materials to obtain the organic bio-fertilizer.

The controller is used for controlling the running states of the crusher, the first conveyor, the shielding pump, the extrusion filtering mechanism, the second conveyor, the drying box, the mixer, the filtering and sterilization equipment and the granulator so as to automatically realize the continuous process flow of crushing, slurry mixing, microbial fermentation, solid-liquid separation, material mixing, filtering, liquid preparation and granulation.

Preferably, the crusher is a crusher with a drying function, and the particle size of the crushed excrement dry powder is not less than 80 meshes.

Preferably, the dilution ratio of human and animal urine in the fermenter is at least 1: 8. The feeding mass ratio of the excrement dry powder to the diluted human and animal urine is 1: 4-1: 5. The temperature in the fermentation process is controlled to be 20-35 ℃. The complete fermentation time of the slurry in the fermentation tank is 8-15 d.

Preferably, the fermentation tank also comprises a stirring device and an aeration device, wherein the aeration device is used for supplementing oxygen to the slurry in the fermentation tank, and the aeration treatment period of the aeration device is 12 h. The oxygen content in the slurry after each aeration is not lower than 2 mg/L. The stirring device is used for stirring the slurry in the fermentation tank for 2h as a stirring period.

Preferably, the treatment temperature in the high-temperature drying process of the drying oven is 90-120 ℃, and the drying treatment time of the solid matters in the drying oven is not shorter than 2 h. An ultraviolet lamp for sterilization is also arranged in the drying box.

Preferably, in the mixer, the granulated powder comprises 40-50 parts by mass of solid matter, 8-10 parts by mass of calcium carbonate, 5-12 parts by mass of plant ash, 4-9 parts by mass of talcum powder and the balance of sodium dihydrogen phosphate or disodium hydrogen phosphate. The charging ratio of the sodium dihydrogen phosphate or the disodium hydrogen phosphate meets the following requirements: the nitrogen-phosphorus ratio of the obtained mixture calculated according to elements is not lower than 4: 1. The grain diameter of all raw materials in the granulated powder is not less than 80 meshes.

Preferably, one part of the sterilized solution treated by the filtering and sterilizing equipment is introduced into the solution preparation equipment for dilution and preparation of the granulating solution; the rest part is re-introduced into the fermentation tank to replace part of the diluted human and animal urine for use.

Preferably, the sterilization treatment process of the filter sterilization equipment provided by the invention is as follows:

sealing the filtrate in a closed container, and performing water bath treatment at 85 deg.C or higher for 12 hr or longer to obtain sterilized solution.

Preferably, the granulation solution is added with a complex enzyme preparation, algin and sodium starch octenyl succinate before being mixed with granulation powder for granulation; the compound enzyme preparation comprises azotase, lignin peroxidase, polysaccharase and cellulase.

Preferably, the granulator is a granulator with a cooling system, and the process temperature of the material in the granulation stage of the granulator is not higher than 55 ℃.

Preferably, the biological treatment system provided by the invention adopts a closed structure for both the treatment equipment and the conveying equipment. The biological treatment system also comprises an odor digestion system, and the odor digestion system is used for collecting volatile odor gas generated in each device in the whole flow of the system and performing deodorization and harmless treatment on the odor gas.

The biological treatment system based on excrement resource utilization provided by the invention has the following beneficial effects:

1. the biological treatment system that this embodiment provided can effectively handle the excrement and urine that the poultry domestic animal produced to utilize excrement and urine to prepare the organic bio-fertilizer of excellent performance, thereby the resource utilization value of excrement and urine reduces the pollution to the environment, avoids causing the wasting of resources, has high ecological environmental protection value.

2. The biological treatment system provided by the invention adopts a pre-automatic continuous treatment process, realizes the resource utilization of excrement, and has little influence on the environment in the treatment process. Is suitable for large-scale construction, popularization and application, and can be used for locally digesting the excrement generated in the farms in different areas. The pollution of the excrement to the environment in the transfer process is avoided; in addition, the equipment provided by the invention does not need manure for outdoor composting, so that possible leakage and harm of bacteria and virus transmission can be completely eliminated; has higher practical value.

3. The biological treatment system provided by the invention reasonably utilizes microbial resources by adjusting the treatment process, greatly shortens the fermentation and harmless treatment period of the traditional organic fertilizer, and improves the production efficiency of the organic biological fertilizer. The treatment process of the system is not influenced by environmental and climatic factors, and the harmless treatment process of the excrement can be well completed in different seasons. And the processing rate of the device can be adjusted as needed.

Drawings

Fig. 1 is a schematic structural diagram of a biological treatment system based on feces resource utilization provided in embodiment 1 of the present invention;

FIG. 2 is a block diagram of a control part of a biological treatment system based on feces recycling provided in embodiment 1 of the present invention;

FIG. 3 is a flow chart of the steps of a biological treatment process for preparing an organic biofertilizer from chicken manure in example 2 of the present invention;

FIG. 4 is a process diagram of a biological treatment process for preparing organic biofertilizer from chicken manure provided in example 2 of the present invention;

labeled as: 1. a crusher, 3, a first conveyor; 3. a fermentation tank; 4. a canned pump; 5. a solid-liquid separation tank; 6. a second conveyor; 7. a drying oven; 8. a mixer; 9. filtering and sterilizing equipment; 10. liquid preparation equipment; 11. a granulator; 31. a stirring device; 32. an aeration device; 51. an extrusion filtering mechanism; 100. and a controller.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

Example 1

The biological treatment system based on excrement resource utilization provided by the embodiment is mainly used for rapidly producing organic biofertilizer by utilizing poultry or livestock excrement. As shown in fig. 1, the biological treatment system comprises the following steps in sequence according to the process flow of the processing treatment: the device comprises a crusher 1, a first conveyor 2, a fermentation tank 3, a shield pump 4, a solid-liquid separation tank 5, a second conveyor 6, a drying box 7, a mixer 8, a filtering and sterilizing device 9, a liquid preparation device 10, a granulator 11 and a controller 100.

Wherein, the crusher 1 is used for crushing the collected and dried poultry or livestock manure to obtain dry manure powder. The crusher 1 is selected from the crusher 1 with a drying function, and the particle size of the crushed excrement dry powder is not less than 80 meshes. Part of excrement collected in the crushing process may have the condition that the outer surface is dry and the inner part is still wet, and the crusher 1 with the drying function is selected to keep the materials completely dry, so that the crushing effect is improved. In consideration of the requirement of granulation at the later stage, the crushed excrement in the embodiment has a particle size of not less than 80 meshes, which is more favorable for agglomeration and bonding.

The first conveyor 2 is used to transport dry fecal powder to a fermentation tank 3.

The fermentation tank 3 is used for adding excrement dry powder and diluted human and animal urine to obtain mixed slurry, then inoculating fermentation flora in the slurry and completing the fermentation process of the slurry. The fermentation flora contains bacillus megatherium, saccharomycetes, rhodopseudomonas, lactobacillus acidophilus and acinetobacter, and the initial content ratio of the five in the inoculation stage is 15: (6-10): (2-3): (3-5): 1. and controlling the pH value of the slurry to be 6.2-6.5 in the fermentation process.

In the fermentation tank 3, the dilution ratio of human and animal urine is at least 1: 8. The feeding mass ratio of the excrement dry powder to the diluted human and animal urine is 1: 4-1: 5. The temperature in the fermentation process is controlled to be 20-35 ℃. The complete fermentation time of the slurry in the fermentation tank 3 is 8-15 d. The fermentation tank 3 is the first stage of excrement treatment, and organic matters remained in excrement can be decomposed and utilized by various microorganisms in different types in the process, so that the excrement is decomposed, and roots are prevented from being burnt due to microbial fermentation reaction in the later use process. The embodiment selects the zymophyte aiming at the characteristics of residues in the chicken manure and partial livestock manure to obtain a group of floras which are most suitable for the current fermentation environment, greatly shortens the fermentation time, and improves the treatment efficiency of the chicken manure and other manure. Besides organic matter treatment, the zymocyte treatment can also inhibit harmful bacteria contained in the excrement, reduce the generation of toxic and harmful substances in the excrement and improve the utilization value of the generated organic fertilizer.

In addition, in order to secure the intensity of the vital activities of the microorganisms in the fermentation tank 3 and reduce the fermentation period, the present embodiment further installs a stirring apparatus 31 and an aeration apparatus 32 in the fermentation tank 3. The aeration device 32 is used for supplementing oxygen to the slurry in the fermentation tank 3, and the aeration treatment period of the aeration device 32 is 12 h. After aeration, the dissolved oxygen in the slurry can be increased, and the activity intensity of aerobic bacteria in the zymocyte is ensured. Meanwhile, the biological activity of part of facultative anaerobes is inhibited, and the activity and the production effect of different microorganisms in the fermentation tank 3 are adjusted. In addition, the aeration process can also avoid the influence of the deterioration of the micro-ecological environment in the fermentation tank 3 caused by the generation of carbon dioxide and other gases on the activity of different strains. The oxygen content in the slurry after each aeration is not lower than 2 mg/L. The stirring device 31 stirs the slurry in the fermentation tank 3 for 2h as a stirring period. The stirring process can keep the environmental conditions of all places in the fermentation tank 3 consistent, and the uniformity and the stability of the fermentation process are further improved.

The shield pump 4 is used for pumping the slurry after the fermentation in the fermentation tank 3 is completed to a solid-liquid separation tank 5.

The solid-liquid separation tank 5 is provided therein with an extrusion filter mechanism 51. The solid-liquid separation tank 5 is used for naturally settling, extruding and filtering the fermented slurry to obtain a separated solid matter and a mixed solution. As shown in fig. 1, in the present embodiment, the solid-liquid separation tank 5 includes a funnel-shaped bottom, a filter screen is disposed at an upper opening of the funnel-shaped structure, separation of slurry is promoted at an upper portion of the solid-liquid separation tank 5 by pressing, a liquid substance is extruded along a lower portion of the funnel opening, and a solid substance above the filter screen is extruded from a side of the solid-liquid separation tank 5. The specific solid-liquid separation can also adopt other equipment with any structural form or working principle, and only needs to be capable of completing the solid-liquid separation. For example, when the cost is low, a centrifugal device may be used as the solid-liquid separation tank 5 in the present embodiment.

The second conveyor 6 is used for conveying the separated solids in the solid-liquid separation to a drying box 7. The drying box 7 is used for carrying out high-temperature drying treatment on the solid matters separated by the solid-liquid separation tank 5. The processing temperature of the drying oven 7 in the high-temperature drying process is 90-120 ℃, and the drying processing time of the solid in the drying oven 7 is not shorter than 2 hours. An ultraviolet lamp for sterilization is also provided in the drying box 7.

The drying box 7 in this embodiment mainly includes a function of drying the solid matter after fermentation and sterilizing the solid matter. This embodiment combines a high temperature treatment process in the drying oven 7 to complete the drying and sterilization process. Meanwhile, in order to eliminate harmful bacteria possibly remaining in the drying box, an ultraviolet lamp is arranged in the drying box 7, and the sterilizing effect is further improved by combining high-energy ultraviolet rays, so that the dried ash reaches a better sterile state.

The mixer 8 is used for fully stirring and mixing the calcium carbonate, the plant ash, the talcum powder, the solid matter and the sodium dihydrogen phosphate or the disodium hydrogen phosphate according to a preset feeding ratio to obtain the granulation powder. The embodiment considers the problems of single nutrient component and insufficient physicochemical properties of the feces. And various different components are added into the solid matters, so that the produced organic fertilizer has better effects of water retention, slow release and root control, and can better ensure the survival and the exertion of specific microorganisms and enzymes in soil.

Specifically, in the mixer 8 of this embodiment, the granulated powder material includes, by mass, 40 to 50 parts of a solid, 8 to 10 parts of calcium carbonate, 5 to 12 parts of plant ash, 4 to 9 parts of talc powder, and the balance sodium dihydrogen phosphate or disodium hydrogen phosphate. The charging ratio of the sodium dihydrogen phosphate or the disodium hydrogen phosphate meets the following requirements: the nitrogen-phosphorus ratio of the obtained mixture calculated according to elements is not lower than 4: 1. The grain diameter of all raw materials in the granulated powder is not less than 80 meshes.

The filtering and sterilizing device 9 is used for filtering the mixed liquid separated in the solid-liquid separation process and sterilizing the filtered filtrate at high temperature. Introducing part of the sterilized solution treated by the filtering and sterilizing equipment 9 into a solution preparation equipment 10 for dilution and preparation of a granulating solution; the rest part is re-introduced into the fermentation tank 3 to replace part of the diluted human and animal urine for use. The sterilization treatment process of the filter sterilization apparatus 9 provided in this embodiment is as follows: sealing the filtrate in a closed container, and performing water bath treatment at 85 deg.C or higher for 12 hr or longer to obtain sterilized solution.

The mixed liquid separated from the solid-liquid separation device is fully utilized in the embodiment, and is used for preparing the flora solution on the one hand and as the fermentation raw material again on the other hand, so that not only is the effective utilization of resources realized, but also the amount of pollutants discharged to the outside in the production process can be reduced as much as possible, and better environmental protection benefits are achieved.

In this embodiment, the solution preparation device 10 is configured to obtain the sterile solution processed by the filtration and sterilization device 9, dilute the solution, inoculate the complex flora after dilution, add nutrients to the inoculated solution, shake the inoculated solution and culture the inoculated solution for a short period of time, so that the total content of the target strains in the cultured solution is not less than 150 hundred million/ml, and obtain the granulated solution. Wherein the inoculated target strains comprise actinomycetes, bacillus subtilis and trichoderma; also comprises one or more of azotobacter, silicate bacteria, photosynthetic bacteria, yeast and bacillus polymyxa. Before the granulation solution is used for mixing and granulating with the granulation powder, a complex enzyme preparation, algin and sodium starch octenyl succinate are also added; the compound enzyme preparation comprises azotase, lignin peroxidase, polysaccharase and cellulase.

In order to enable the produced organic fertilizer to have better functions of water retention, fly protection, bacteriostasis and seedling protection, the embodiment adds multi-component composite flora and complex enzyme preparation into the organic fertilizer through granulation solution. The adding mode can ensure the dispersion effect of beneficial microorganisms and enzymes in the organic fertilizer and ensure the quality uniformity of the organic fertilizer. Meanwhile, the humidity and the organic matter content of the organic fertilizer are maintained by the added algin and sodium starch octenyl succinate, and the activity of flora and enzyme in the organic fertilizer is guaranteed. In addition, the algin and the sodium starch octenyl succinate also have the effects of promoting the granulation effect and the bonding strength of the organic fertilizer, and the pulverization of the organic fertilizer after granulation is avoided.

The granulator 11 is used for mixing the granulation powder and the granulation solution according to a mass ratio capable of completing granulation to obtain a wet material, and granulating the wet material to obtain the organic bio-fertilizer. The granulator 11 is a granulator 11 with a cooling system, and the process temperature of the material in the granulation stage of the granulator 11 is not higher than 55 ℃.

Because a plurality of active microorganisms are added into the organic fertilizer production raw materials in the embodiment, in order to guarantee the activity of the microorganisms, the temperature in the granulation process is strictly controlled in the embodiment. The influence of high temperature on the performance of active substances in the organic fertilizer is avoided.

As shown in fig. 2, the controller 100 is configured to control the operation states of the crusher 1, the first conveyor 2, the canned motor pump 4, the extrusion and filtration mechanism 51, the second conveyor 6, the drying box 7, the mixer 8, the filter sterilization equipment 9 and the granulator 11, so as to automatically implement a continuous process flow of "crushing-slurry mixing-microbial fermentation-solid-liquid separation-material mixing-filtration, liquid preparation-granulation".

The biological treatment system provided by the embodiment is an automatic continuous treatment system, the installation and deployment modes of the equipment of the system are flexible, and the installation and operation modes of different equipment can be flexibly configured according to specific production requirements. For example, in order to coordinate the working cycle between different plants, it is possible to use the treatment mode of several fermenters 3 in parallel in the same system, taking into account that the fermentation cycle in the fermenters 3 is longer compared to the operating cycle of the other plants, with different fermenters 3 being used at different stages in conjunction with the preceding and following processes. Meanwhile, different devices can work in a clearance type operation mode, and a coordination effect is generated with other devices.

The embodiment provides a biological treatment system in which the treatment device and the conveying device are both of a closed structure. The biological treatment system also comprises an odor digestion system, and the odor digestion system is used for collecting volatile odor gas generated in each device in the whole flow of the system and performing deodorization and harmless treatment on the odor gas. In this embodiment, in order to avoid the stink of fecal treatment process to overflow, the deodorization digestive system is installed in the system in particular, and the deodorization digestive system can adopt acid-base treatment, sprays various processes such as dissolution, physical adsorption and catalytic oxidation to treat various stink gases generated in the treatment process, avoids stink molecules to overflow from the system, and influences the life of surrounding residents.

Example 2

The embodiment provides a biological treatment process for preparing an organic biofertilizer from chicken manure, and the biological treatment process is adopted in the running process of the biological treatment system based on manure recycling in the embodiment 1. As shown in fig. 3 and 4, the specific biological treatment process provided in this embodiment includes the following steps:

(1) crushing: collecting fresh and dry chicken manure, and crushing the chicken manure to obtain the chicken manure dry powder. The fineness of the crushed chicken manure is controlled to be not more than 70-80 meshes of material particle size.

(2) Mixing the slurry: collecting urine of animals or human, diluting, and uniformly mixing the diluent and the chicken manure dry powder according to the solid-to-liquid ratio of 1: 4-5 to obtain slurry. Wherein the dilution ratio of the urine of animals or human is 1: 8-10.

(3) And (3) microbial fermentation: inoculating fermentation flora containing bacillus megatherium, saccharomycetes, rhodopseudomonas, lactobacillus acidophilus and acinetobacter into the slurry, and adjusting the pH value of the slurry to be 6.0-6.3; fermenting at room temperature for 8-15 days.

In the fermentation flora used in the microbial fermentation stage, the initial content ratio of bacillus megatherium, saccharomycetes, rhodopseudomonas, lactobacillus acidophilus and acinetobacter in the inoculation stage is 15: (6-10): (2-3): (3-5): 1. in addition, in the microbial fermentation stage, the slurry is stirred and uniformly mixed every 2-4 hours, and the slurry is aerated every 12 hours to supplement oxygen into the slurry.

(4) Solid-liquid separation: and naturally settling, extruding and filtering the fermented slurry to obtain a solid matter and a mixed solution, and drying the solid matter. The drying process of the solid is completed in high-temperature drying equipment, the drying temperature of the high-temperature drying equipment is 90-120 ℃, and the processing time of the high-temperature drying is not less than 2 hours.

(5) Mixing materials: preparing 40-50 parts of solid matter, 8-10 parts of calcium carbonate, 5-12 parts of plant ash and 4-9 parts of talcum powder according to parts by mass, and uniformly mixing the raw materials to obtain a mixture; and supplementing sodium dihydrogen phosphate or disodium hydrogen phosphate to ensure that the nitrogen-phosphorus ratio in terms of elements in the mixture is not less than 4: 1. In the prepared mixture, the mesh number of all the raw materials is higher than 80 meshes.

(6) Filtering and preparing liquid: filtering the mixed solution obtained in the previous step to obtain a filtrate, sterilizing the filtrate at high temperature, then taking part of the sterilized filtrate, adding water to dilute the filtrate, inoculating the composite flora and the nutrient solution into the diluent, shaking and culturing the diluent for a short time to obtain a multi-bacterial solution, finally adding 0.6-1 wt% of algin and 3-4 wt% of sodium starch octenyl succinate into the multi-bacterial solution, and fully dissolving the mixture to obtain a granulation solution. The microbial flora species contained in the complex flora include: actinomycetes, bacillus subtilis and trichoderma; also comprises one or more of azotobacter, silicate bacteria, photosynthetic bacteria, yeast and bacillus polymyxa. Adding water to dilute the sterilized filtrate, wherein the dilution times are 6-10 times; the undiluted sterile filtrate is replenished to step (2) to be mixed with urine for slurrying. In the short-term culture stage after microbial inoculation, the total content of various target microorganisms in the multi-strain solution is not less than 150 hundred million/ml.

(7) And (3) granulation: adding the granulating solution obtained in the step (6) into the mixture obtained in the step (5), fully stirring to enable the water content of the mixed material to be 20-30%, and then putting the mixed material into a fertilizer granulator for granulation; obtaining the organic biological fertilizer. A complex enzyme preparation is also added into the multi-bacterium solution before mixing, and the complex enzyme preparation comprises azotase, lignin peroxidase, polysaccharidase and cellulase; wherein, the mixing stage adopts a low-speed mixer with a cooling system, and the fertilizer granulator adopts a disc granulator with a cooling system, so that the process temperature of the mixing stage and the granulating stage of the organic bio-fertilizer is not higher than 55 ℃.

The actions and effects of the processes in this embodiment can be understood by combining the description of the related biological treatment system in embodiment 1, and the detailed description of this embodiment is omitted.

The above examples are merely illustrative of several embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.