阅读说明：本技术 有机污泥资源化的处理方法及系统 (Organic sludge recycling treatment method and system ) 是由 纪博文 戴佑宗 张凯伦 王相明 于 2021-09-26 设计创作，主要内容包括：公开有机污泥资源化的处理方法及系统。有机污泥资源化的处理方法包含：生物处理有机污泥,使有机污泥的pH值、MLSS及COD达预设值；使用聚合物调理经生物处理的有机污泥；脱水及干燥经聚合物调理的有机污泥；以及将经脱水及干燥的有机污泥造粒制成生物质燃料。(Discloses a method and a system for recycling organic sludge. The organic sludge recycling treatment method comprises the following steps: biologically treating the organic sludge to enable the pH value, MLSS and COD of the organic sludge to reach preset values; conditioning the biologically treated organic sludge with a polymer; dewatering and drying the polymer conditioned organic sludge; and granulating the dehydrated and dried organic sludge to prepare the biomass fuel.)

1. A treatment method for recycling organic sludge comprises the following steps:

biologically treating organic sludge to make the pH value, mixed liquor suspended solid concentration (MLSS) and Chemical Oxygen Demand (COD) of the organic sludge reach preset values;

conditioning the biologically treated organic sludge with a polymer;

dewatering and drying the organic sludge conditioned with the polymer; and

and granulating the dehydrated and dried organic sludge to prepare the biomass fuel.

2. The treatment method as described in claim 1, wherein the step of bringing the pH value, MLSS and COD of the organic sludge to preset values comprises bringing the pH value of the organic sludge to 3-4, the MLSS to 6000-10000mg/L and the COD to 600-1500 mg/L.

3. The treatment method of claim 1, wherein the step of biologically treating the organic sludge comprises:

regulating and controlling Compressed Dry Air (CDA) and a pump to stir and mix the organic sludge evenly;

adding a chemical solution to regulate the pH; and

adding CO and O₃、N₂、H₂O₂At least one of them is used as biological cell destroying medium to destroy the biological cells of the organic sludge.

4. The treatment method of claim 1, wherein the step of conditioning with the polymer comprises: and judging the colloidal feather state of the organic sludge by image recognition to control the addition of the polymer.

5. The process of claim 1, wherein the dehydrating and drying step comprises:

judging the dehydration effect and the filter cake thickness by image identification and infrared sensing; and

the dryness is judged by image identification to regulate and control the crushing and drying time to form biomass granules.

6. The process of claim 1 wherein the step of pelletizing to form a biomass fuel comprises: mixing the biomass granules formed by dehydration and drying and another waste liquid according to weight mixing parameters to form the biomass fuel with a preset heat value according to weight ratio.

7. The method of claim 1, further comprising descumming the organic sludge after biologically treating the organic sludge.

8. The treatment method of claim 7, wherein the step of descumming the organic sludge comprises: the amount of the gas supplied is controlled according to the amount of the gas to scrape the scum of the organic sludge.

9. A treatment system for recycling organic sludge comprises:

the biological treatment unit is used for biologically treating the organic sludge to enable the pH value of the organic sludge, the suspended solid concentration (MLSS) of the mixed solution and the Chemical Oxygen Demand (COD) to reach preset values;

a conditioning unit for conditioning the biologically treated organic sludge with a polymer;

a drying unit for dewatering and drying the organic sludge conditioned by the polymer; and

and a biomass fuel blending unit, which is used for granulating the dehydrated and dried organic sludge to prepare the biomass fuel.

10. The treatment system as claimed in claim 9, wherein the biological treatment unit biologically treats the organic sludge such that the pH of the organic sludge is 3-4, the MLSS is 6000-10000mg/L and the COD is 600-1500 mg/L.

11. The treatment system of claim 1, wherein the biological treatment unit conditions Compressed Dry Air (CDA) and pumps to agitate and homogenize the organic sludge, and adds chemical solutions to condition the pH, and adds CO, O₃、N₂、H₂O₂At least one of them is used as biological cell destroying medium to destroy the biological cells of the organic sludge.

12. The processing system of claim 9, wherein the conditioning unit determines a colloidal plume state of the organic sludge using an image recognition device to control the addition of the polymer.

13. The treatment system of claim 9, wherein the drying unit determines dewatering effect and filter cake thickness using an image recognition device and an infrared range finder, and determines dryness using the image recognition device to regulate pulverizing and drying time to form biomass granules.

14. The processing system of claim 9, wherein the biomass fuel blending unit mixes the biomass pellet and another waste liquid generated by the dehydration and drying according to a weight mixing parameter to form the biomass fuel with a predetermined heat value according to a weight ratio.

15. The system of claim 9, further comprising a despumation unit, wherein the despumation unit controls a gas supply amount according to an amount of air and removes scum from the organic sludge using a scraper after the organic sludge is biologically treated.

Technical Field

The invention relates to a method and a system for treating organic sludge; specifically, the invention relates to a method and a system for recycling organic sludge.

Background

The existing organic sludge treatment is buried as waste after sludge concentration, dehydration and drying. However, as the industry develops, the total amount of organic sludge treated increases, so that the organic sludge is exposed to landfill and odor problems. Therefore, how to treat organic sludge to convert it into resources is one of the important issues in organic sludge treatment today.

Disclosure of Invention

The invention aims to provide a method and a system for recycling organic sludge, which are used for converting the organic sludge into biomass fuel by a chemical/physical treatment mode.

Another object of the present invention is to provide a method and a system for recycling organic sludge, which determine the processing status of the organic sludge by an artificial intelligence technique to effectively control the processing procedure of the organic sludge.

The invention also aims to provide a method and a system for recycling organic sludge, which are used for preparing biomass fuel with a preset heat value by mixing biomass granules obtained by treating and converting organic sludge and other waste liquid according to a weight ratio, so that the value of the biomass fuel is effectively improved, and the treatment cost of the other waste liquid is reduced.

In one embodiment, the method for recycling organic sludge according to the present invention comprises: biologically treating the organic sludge to enable the pH value of the organic sludge, the suspended solid concentration (MLSS) of the mixed solution and the Chemical Oxygen Demand (COD) to reach preset values; conditioning the biologically treated organic sludge with a polymer; dewatering and drying the polymer conditioned organic sludge; and granulating the dehydrated and dried organic sludge to prepare the biomass fuel.

In one embodiment, the step of adjusting the pH, MLSS and COD of the organic sludge to predetermined values comprises: the pH value of the organic sludge is 3-4, the MLSS is 6000-10000mg/L and the COD is 600-1500 mg/L.

In one embodiment, the step of biologically treating the organic sludge comprises: regulating and controlling Compressed Dry Air (CDA) and a pump to stir and mix the organic sludge evenly; adding a chemical solution to regulate the pH value; and addition of CO, O₃、N₂、H₂O₂At least one of them is used as a biological cell destruction medium to destroy the biological cells of the organic sludge.

In one embodiment, the step of conditioning with a polymer comprises: the glue feather state of the organic sludge is judged by image identification to control the addition of the polymer.

In one embodiment, the step of dehydrating and drying comprises: judging the dehydration effect and the filter cake thickness by image identification and infrared sensing; and judging the dryness by image identification to regulate and control the crushing and drying time to form biomass granules.

In one embodiment, the step of pelletizing to form the biomass fuel comprises: and mixing the biomass granules formed by dehydration and drying and the other waste liquid according to weight mixing parameters to form the biomass fuel with a preset heat value according to weight ratio.

In one embodiment, the method for recycling organic sludge of the present invention further comprises removing scum from the organic sludge after the biological treatment of the organic sludge.

In one embodiment, the step of descumming the organic sludge comprises: the amount of the gas supplied is controlled according to the amount of the air to scrape the scum of the organic sludge.

In another embodiment, the present invention provides a system for recycling organic sludge, comprising: the biological treatment unit is used for biologically treating the organic sludge to enable the pH value, MLSS and COD of the organic sludge to reach preset values; a conditioning unit for conditioning the biologically treated organic sludge using a polymer; a drying unit to dewater and dry the polymer conditioned organic sludge; and a biomass fuel blending unit, which is used for granulating the dehydrated and dried organic sludge to prepare the biomass fuel.

Compared with the prior art, the organic sludge recycling treatment method and the organic sludge recycling treatment system control the treatment reference indexes (such as pH, MLSS and COD) of the organic sludge within a preset range by a chemical/physical treatment mode and an artificial intelligence technology, so that the organic sludge is effectively treated and converted into resources. In addition, the organic sludge recycling treatment method and the organic sludge recycling treatment system can mix biomass granules generated by organic sludge treatment with another waste liquid to form biomass granules with a preset heat value, so that the value of the biomass granules is improved, and the treatment cost of the other waste liquid is reduced.

Drawings

Fig. 1 is a schematic view of a treatment system for recycling organic sludge according to an embodiment of the present invention.

Fig. 2 is a flowchart of a method for recycling organic sludge according to an embodiment of the present invention.

FIG. 3 is a schematic view of the biological treatment unit of FIG. 1.

Fig. 3A is a schematic diagram of the supercharger of fig. 3.

Fig. 4 is a schematic diagram of a floating removal unit according to an embodiment of the invention.

Fig. 4A is a schematic diagram of the bubble gauge of fig. 4.

[ notation ] to show

1 organic sludge recycling treatment system

10 biological treatment unit

11 treatment tank

12apH value sensor

12b MLSS sensor

12c COD sensor

12d ozone sensor

13a-13d valve member

14 pressure booster

15 pump

16 air exhaust

17 controller

20 Conditioning Unit

30 drying unit

40 biomass fuel blending unit

50 remove unit of floating

51 remove superficial groove

52 bubble measuring device

52a probe

53a, 53b valve element

54 scraper

55 Pump

56 air exhaust

57 controller

100 biomass fuel

S10-S50 steps

Detailed Description

In the drawings, the thickness of layers, films, panels, regions, etc. have been exaggerated for clarity. Like reference numerals refer to like elements throughout the specification. It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" or "connected to" another element, it can be directly on or connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" or "directly connected to" another element, there are no intervening elements present. As used herein, "connected" may refer to physical and/or electrical connections. Further, "electrically connected" or "coupled" may mean that there are additional elements between the two elements.

It will be understood that, although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, and/or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a "first element," "component," "region," "layer" or "portion" discussed below could be termed a second element, component, region, layer or portion without departing from the teachings herein.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms, including "at least one", unless the content clearly indicates otherwise. "or" means "and/or". As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, regions, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, regions integers, steps, operations, elements, components, and/or groups thereof.

Furthermore, relative terms, such as "lower" or "bottom" and "upper" or "top," may be used herein to describe one element's relationship to another element, as illustrated. It will be understood that relative terms are intended to encompass different orientations of the device in addition to the orientation depicted in the figures. For example, if the device in one of the figures is turned over, elements described as being on the "lower" side of other elements would then be oriented on "upper" sides of the other elements. Thus, the exemplary term "lower" can include both an orientation of "lower" and "upper," depending on the particular orientation of the figure. Similarly, if the device in one of the figures is turned over, elements described as "below" or "beneath" other elements would then be oriented "above" the other elements. Thus, the exemplary terms "below" or "beneath" can encompass both an orientation of above and below.

As used herein, "about", "approximately", or "substantially" includes the stated value and the average value within an acceptable range of deviation of the specified value as determined by one of ordinary skill in the art, taking into account the measurement in question and the specified amount of error associated with the measurement (i.e., the limitations of the measurement system). For example, "about" may mean within one or more standard deviations of the stated value, or within ± 30%, ± 20%, ± 10%, ± 5%. Further, as used herein, "about", "approximately" or "substantially" may be selected based on optical properties, etch properties, or other properties, with a more acceptable range of deviation or standard deviation, and not all properties may be applied with one standard deviation.

Unless defined otherwise, all terms (including 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. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and the present invention and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Exemplary embodiments are described herein with reference to cross-sectional views that are schematic illustrations of idealized embodiments. Thus, variations from the shapes of the illustrations as a result, for example, of manufacturing techniques and/or tolerances, are to be expected. Thus, the embodiments described herein should not be construed as limited to the particular shapes of regions as illustrated herein but are to include deviations in shapes that result, for example, from manufacturing. For example, a region shown or described as flat may generally have rough and/or nonlinear features. Further, the acute angles shown may be rounded. Thus, the regions illustrated in the figures are schematic in nature and their shapes are not intended to illustrate the precise shape of a region and are not intended to limit the scope of the claims.

The invention provides a method and a system for recycling organic sludge. The treatment method and system of the present invention are preferably applied to the treatment of organic sludge generated in the semiconductor industry or the display panel industry, but are not limited thereto. The treatment method and system of the present invention are preferably directed to the treatment of organic sludge having a water content of more than 10%, particularly more than 50% or more. The details of the processing method and system of the present invention will be described in detail with reference to the accompanying drawings.

Referring to fig. 1, fig. 1 is a schematic view of a treatment system 1 for recycling organic sludge according to an embodiment of the present invention. As shown in fig. 1, a treatment system 1 for recycling organic sludge includes a biological treatment unit 10, a conditioning unit 20, a drying unit 30, and a biomass fuel blending unit 40. The biological treatment unit 10 is used for biologically treating the organic sludge to enable the pH value, MLSS and COD of the organic sludge to reach preset values. The conditioning unit 20 conditions the biologically treated organic sludge using a polymer. The drying unit 30 is used to dewater and dry the polymer conditioned organic sludge. The biomass fuel blending unit 40 granulates the dehydrated and dried organic sludge to produce the biomass fuel 100. Furthermore, according to actual requirements, the organic sludge recycling system 1 may further include a floating removal unit 50 for controlling the gas supply amount according to the amount of the air and using a scraper 54 (refer to fig. 4) to remove the scum from the organic sludge after the biological treatment unit 10 biologically treats the organic sludge. The descummed organic sludge is then passed to the conditioning unit 20 for further treatment.

Specifically, the organic sludge recycling treatment system 1 may include a plurality of treatment units (e.g., a biological treatment unit 10, a conditioning unit 20, a drying unit 30, a biomass fuel blending unit 40, a flotation unit 50, and the like). According to practical applications, the number of each processing unit can be more than one, and each processing unit can comprise components with different functions so as to achieve a preset processing effect.

Referring to fig. 3, fig. 3 is a schematic view of the biological treatment unit 10 of fig. 1. As shown in FIG. 3, the biological treatment unit 10 may include a treatment tank 11, index sensors (e.g., pH sensor 12a, MLSS sensor 12b, COD sensor 12c, ozone sensor 12d), valve members (e.g., 13a, 13b, 13c, 13d), a pressure booster 14, a pump 15, an exhaust member 16, and a controller 17. The index sensor is in signal connection with the controller 17 so that the controller 17 can control the operation of the relevant components in the bio-sensing unit 10 according to the sensed result. For example, the controller 17 can control the operations of various components in the bio-processing unit 10, such as the opening/closing of valve elements, the activation/deactivation of the pump 15, the opening/deactivation of the exhaust member 16, the operation of the pressure booster 14, etc., according to the sensing data of the index sensor and the level of the liquid in the processing tank 11. The exhaust member 16 is used to exhaust the gas generated in the processing bath 11 out of the processing bath 11. For example, the exhaust member 16 may be opened when in contact with bubbles/bubbles generated in the processing tank 11 to exhaust the gas/bubbles out of the processing tank 11, and closed when not in contact with the bubbles/bubbles to maintain the processing conditions (e.g., pressure) of the processing tank 11. In addition, the biological treatment unit 10 can add an antifoaming agent into the treatment tank 11, and further identify the adding operation of the antifoaming agent by the liquid level, so that the foam of the organic sludge in the treatment tank 11 can be properly controlled, and the liquid level misjudgment can be avoided.

The index sensor is disposed at a suitable position in the treatment tank 11 to sense the related sludge property for the index of the biological treatment effect. For example,the pH sensor 12a is used for sensing the pH of the organic sludge. The MLSS sensor 12b is used to sense the mixed liquid suspended solids (mixed liquid suspended solids) concentration of the organic sludge, or called the mixed liquid sludge concentration, which represents the total weight (mg/L) of the sludge solids contained in a unit volume of the mixed liquid. The COD sensor 12c is used to sense the Chemical Oxygen Demand (Chemical Oxygen Demand) of the organic sludge, which is used to indicate the amount of organic matter in the water, i.e. the amount of Oxygen (mg/L) required after each liter of water sample is completely oxidized. In addition, the biological treatment unit 10 optionally includes an ozone sensor 12d for sensing ozone (O) in the organic sludge₃) The concentration of (c).

The treatment tank 11 has an inlet end and an outlet end, wherein valves 13a and 13b are respectively disposed at the inlet end and the outlet end for controlling the feeding and discharging of the organic sludge in the treatment tank 11. In one embodiment, the valve 13a can control the feeding of the organic sludge according to the level of the liquid in the treatment tank 11. For example, the controller 17 may control the valve 13a to be opened to allow the organic sludge to enter the treatment tank 11 when the liquid level height in the treatment tank 11 is lower than 90%, and control the valve 13a to be closed to block the organic sludge from entering the treatment tank 11 when the liquid level height in the treatment tank 11 is higher than 90%. The controller 17 can control the valve 13b to open when the pH value, MLSS and COD sensing results of the organic sludge reach preset values, so that the biologically treated organic sludge in the treatment tank 11 can enter the next treatment stage (for example, enter the conditioning unit 20 or the flotation unit 50). In one embodiment, the biological treatment unit 10 biologically treats the organic sludge such that the pH of the organic sludge is 3-4, the MLSS is 6000-10000mg/L, and the COD is 600-1500 mg/L. That is, the controller 17 can control the valve 13b to open when the indicator sensor detects that the pH value of the organic sludge reaches 3-4, the MLSS reaches 6000-10000mg/L, and the COD reaches 600-1500 mg/L.

Further, the treatment tank 11 has a branch line connecting the pump 15 and the pressure booster 14, the valve 13c is located between the pump 15 and the branch line of the treatment tank 11, and the valve 13d is located between the pump 15 and the pressure booster 14. Valve 13c controls the flow of organic sludge into the bypass line, and valve 13d may be a check valve to prevent backflow of pressurized fluid from booster 14. Pressurizer 14 provides pressurized chemical solutionLiquid and gas are sent to the treatment tank 11 to regulate and control the relevant properties of the organic sludge and achieve the effect of stirring and uniformly mixing the organic sludge. Specifically, the biological treatment unit 10 regulates the Compressed Dry Air (CDA) and the pump 15 to agitate and homogenize the organic sludge, and adds chemical solution to regulate pH, and CO, O₃、N₂、H₂O₂At least one of them is used as a biological cell destruction medium to destroy the biological cells of the organic sludge. In other embodiments, the biological treatment unit 10 may agitate and homogenize the organic sludge using any convenient gas, such as CDA, N₂Inert gases, etc., with CDA being the preferred choice for cost and ease of availability. Please refer to fig. 3A for a schematic diagram of the supercharger 14. As shown in fig. 3A, the pressurizer 14 may selectively provide chemical solutions and gases to the processing tank 11. For example, the pressure booster 14 is connected to the chemical solution and gas supply sources to provide the appropriate chemical solution and gas according to actual requirements. Depending on the type of organic sludge to be treated, the chemical solution added may be an acid or alkali solution to adjust the pH to 3-4. In this embodiment, the biological treatment unit 10 may regulate the pH of the organic sludge by providing an acid solution (e.g., sulfuric acid (H2SO4)) to the treatment tank 11. The supercharger 14 can selectively supply CO and O₃、N₂、H₂O₂At least one of them is added to the treatment tank 11 to destroy the biological cells of the organic sludge. In this example, sulfuric acid and CO, O₃、N₂、H₂O₂The addition of (b) is preferably performed in stages so that the pH value, MLSS and COD of the organic sludge reach the above preset values. Further, supercharger 14 selectively adds O₃When used as a medium for disrupting biological cells, the controller 17 preferably sets the pH, MLSS and COD of the organic sludge to the above predetermined values and O₃The valve 13b is opened when the content is substantially zero, so as to discharge the material to the next processing unit (such as the conditioning unit 20 or the float removing unit 50).

The biological treatment of the organic sludge by the biological treatment unit 10 may be divided into several stages, such as a biological conditioning treatment, a biological fungus crushing/decomposing treatment and a biological fungus final treatment, and these treatment processes may be performed in a single biological treatment unit 10 or may be performed in a plurality of biological treatment units 10Respectively. For example, the organic sludge recycling system 1 may comprise, for example, three similar biological treatment units 10, wherein the first biological treatment unit 10 may provide CDA and sulfuric acid through a pump 15 and a pressure booster 14 to achieve the treatment of stirring and conditioning the organic sludge and adjusting the pH value, and the second biological treatment unit 10 is entered when the sensing data of the index sensor reaches a preset value. The second biological treatment unit 10 can provide treatment for CDA and sulfuric acid agitation and pH adjustment of the organic sludge by pump 15 and booster 14, and by adding biological cell disruption media (e.g., CO, O)₃、N₂、H₂O₂Equal-strength oxidizer) to destroy/decompose the biological cells and enter the third biological processing unit 10 when the sensed data of the index sensor reaches a predetermined value. The third biological treatment unit 10 may repeat operations similar to those of the second biological treatment unit 10 to ensure that the sensed data of the biologically treated organic sludge reaches a predetermined value. The organic sludge recycling treatment system 1 can achieve the expected biological treatment effect through one or more biological treatment units 10, and can be designed according to actual requirements, wherein one biological treatment unit 10 has the characteristics of low equipment cost, long treatment time and difficult control treatment, and a plurality of biological treatment units 10 have the characteristics of easy control treatment, short batch treatment time and high equipment cost.

When the biologically treated organic sludge has a high level of foam or scum, the scum can be removed by the deflash unit 50 or, when the scum is negligible, can be directed to the conditioning unit 20 for polymer conditioning. Fig. 4 is a schematic diagram of a floating removal unit 50 according to an embodiment of the invention. As shown in fig. 4, the float removing unit 50 includes a float removing tank 51, a bubble measuring device 52, valve members 53a and 53b, a scraper 54, a pump 55, an air discharging device 56, and a controller 57. The controller 57 controls operations of the components in the flotation unit 50, such as turning on/off of the valve elements 53a, 53b, turning on/off of the pump 55, turning on/off of the air discharge element 56, operation of the bubble meter 52 and the scraper 54, and the like. The exhaust member 56 is used to exhaust the gas generated in the flotation tank 51 out of the flotation tank 51. In addition, the float removing unit 50 can add an antifoaming agent into the float removing tank 51, and further identify the adding operation of the antifoaming agent according to the liquid level, so that the foam of the organic sludge in the float removing tank 51 can be properly controlled, and the liquid level misjudgment can be avoided.

Specifically, the defluorination tank 51 has an inlet end and an outlet end, wherein the valves 53a and 53b are respectively disposed at the inlet end and the outlet end for controlling the feeding and discharging of the organic sludge in the defluorination tank 51. In one embodiment, the valve 53a can control the feeding of the organic sludge according to the level of the liquid in the dewatering tank 51. For example, the controller 57 may control the valve 53a to be opened to allow the biologically treated organic sludge to enter the flotation tank 51 when the liquid level height in the flotation tank 51 is lower than 90%, and control the valve 53a to be closed to block the organic sludge from entering the flotation tank 51 when the liquid level height in the flotation tank 51 is higher than 90%.

In this embodiment, the despumation unit 50 controls the gas supply amount according to the amount of the air to descum the organic sludge. For example, the controller 57 receives the measurement value of the bubble measuring device 52 and then sends signals to control the rotation speed, on/off and pressure of the pump 55 to agitate the bubbles to improve the floating removal capability. Referring to fig. 4A, fig. 4A is a schematic diagram of a bubble measuring device 52 according to an embodiment of the invention. As shown in fig. 4A, the bubble measuring device 52 includes a plurality of probes 52a, wherein when the probes 52a contact the bubbles, the bubbles are broken to cause the bubble measuring device 52 to generate an electrical change, and the amount of the air volume can be determined according to the magnitude of the electrical change. Thus, the controller 57 can control the amount of gas supplied by the pump 55 (e.g., the rate of bubble generation) and control the operation of the scraper 54 (e.g., control the rotation speed) to remove the scum from the organic sludge.

As shown in fig. 1, biologically treated (and defluorinated) organic sludge may enter conditioning unit 20. The conditioning unit 20 can determine the colloidal feather state of the organic sludge by using an image recognition device to control the addition of the polymer. Specifically, the image recognition device may be an artificial intelligence processing device or module, and analyzes and judges the captured image through a neural network learning technique, for example, the captured image may be collected, calculated and analyzed, that is, an algorithm is used for learning, so as to judge the glue feather state of the captured image, thereby controlling the addition of the polymer. For example, in the conditioning unit 20, the image recognition can be performed according to the sampling of the preset period to determine the glue feather state after the polymer is added, so as to control the addition amount of the polymer. In the conditioning process, the sedimentation effect of the colloidal plume can be enhanced by increasing the rotating speed of the mixing pump. Thus, the operations of adding and sampling the polymer, recognizing the glue feather state by the image, controlling the rotation speed of the pump, and the like are repeated until the glue feather effect reaches the expected value, and the polymer can enter the drying unit 30.

In the drying unit 30, the dehydration effect and the cake thickness are determined using an image recognition device and an infrared range finder, and the dryness is determined using an image recognition device to control the pulverizing and drying time. Specifically, in the drying unit 30, the dehydration effect of the organic sludge after passing through the dehydration filter cloth is recognized by the image recognition device, and the thickness of the filter cake is determined by the infrared distance meter, thereby adjusting the dehydration pressure and the acting time of the dehydration filter cloth. When the image recognition device confirms that the dehydration effect reaches the preset value, the filter cake is sent into a dryer to be dried so as to form biomass granules. For example, the dryer may be a roller type pulverizing dryer, and the dryness may be determined by an image recognition device to adjust the pulverizing and drying time of the dryer, so as to form biomass granules. Furthermore, the dehydration effect of the dehydration filter cloth can be regulated and controlled through the dryness feedback judged by the image identification device, so as to more effectively dry the biomass granules. Furthermore, the drying unit 30 can be further preheated and baked by a heat recovery system. Particularly, under the not good condition of filter cloth dehydration effect, usable heat recovery system is with the waste heat recovery that other devices produced for preheat the filter cake that toasts organic sludge and form, not only energy-conservation but also promote drying efficiency. In one embodiment, the temperature for drying and heating may be 60-100 ℃, but not limited thereto.

The biomass pellets produced by dehydration and drying can be formed into the biomass fuel 100 in the biomass fuel blending unit 40 according to the required heat value, shape and size. Specifically, the biomass fuel blending unit 40 mixes the biomass pellets generated by dehydration and drying and another waste liquid according to the weight mixing parameter to form the biomass fuel 100 with a preset calorific value according to the weight mixing parameter. In one embodiment, the waste liquid that can be mixed with the biomass granules generated by the organic sludge treatment includes, for example, a photoresist and a waste liquid (or secondary liquid) remaining after the photoresist remover is recycled. The waste liquid of the photoresist/photoresist remover has high heat value and high concentration content, and is suitable for being mixed with biomass granules to form biomass fuel, but not limited to. For example, the biomass particles may be transported from the drying unit 30 to a mixing storage tank of the biomass fuel blending unit 40, and the weight ratio of the biomass particles and another waste liquid (secondary liquid) is controlled according to the heat value matching information, so that the biomass particles and the secondary liquid with the corresponding weight ratio are mixed and transported to a granulator after mixing, and granulation is performed according to the size and shape requirements of the biomass fuel. Therefore, the formed biomass fuel has the preset heat value, size and shape which are proportioned by weight according to the weight mixing parameters, and the value of the biomass fuel is greatly improved.

In the above embodiment, the biomass fuel blending unit 40 mixes and granulates the biomass granules and the other waste liquid to form the biomass fuel with the preset heat value, which not only effectively increases the value of the biomass fuel, but also eliminates the cost of treating (or clearing) the other waste liquid and further creates the value of the waste liquid, but not limited thereto. In another embodiment, the biomass fuel blending unit 40 may also granulate the biomass granules into the biomass fuel with a predetermined size and shape without mixing with other waste liquid. In one embodiment, the water content of the biomass fuel 100 is less than 10%.

Referring to fig. 2, fig. 2 is a flow chart of a treatment method for recycling organic sludge according to an embodiment of the present invention. As shown in fig. 2, the method for recycling organic sludge includes: step S10, biologically treating the organic sludge to enable the pH value of the organic sludge, the suspended solid concentration (MLSS) of the mixed solution and the Chemical Oxygen Demand (COD) to reach preset values; step S20, conditioning the biologically treated organic sludge with a polymer; step S30, dehydrating and drying the organic sludge conditioned by the polymer; and step S40, granulating the dehydrated and dried organic sludge to prepare the biomass fuel. In one embodiment, the step of adjusting the pH, MLSS and COD of the organic sludge to predetermined values comprises: the pH value of the organic sludge is 3-4, the MLSS is 6000-10000mg/L, the COD is 600-1500mg/L, and the ozone content is substantially zero.

In step S10, the step of biologically treating the organic sludge includes: regulating and controlling Compressed Dry Air (CDA) and a pump to stir and mix the organic sludge evenly; adding a chemical solution to regulate the pH value; and addition of CO, O₃、N₂、H₂O₂At least one of them is used as a biological cell destruction medium to destroy the biological cells of the organic sludge.

In step S20, the step of conditioning with a polymer comprises: the glue feather state of the organic sludge is judged by image identification to control the addition of the polymer. In step S30, the step of dehydrating and drying includes: judging the dehydration effect and the filter cake thickness by image identification and infrared sensing; and judging the dryness by image identification to regulate and control the crushing and drying time to form biomass granules. In step S40, the step of pelletizing to produce the biomass fuel includes: and mixing the biomass granules formed by dehydration and drying and the other waste liquid according to weight mixing parameters to form the biomass fuel with a preset heat value according to weight ratio. Further, after the step 10 of biologically treating the organic sludge, the method further comprises descuming the organic sludge (step 50). In step S50, the step of descumming the organic sludge includes: the supply amount of the gas is controlled according to the amount of the air, so as to scrape the scum of the organic sludge.

The present invention has been described in relation to the above embodiments, which are only exemplary of the implementation of the present invention. It must be noted that the disclosed embodiments do not limit the scope of the invention. On the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.