阅读说明：本技术 高浓度难降解有机废水处理系统 (High-concentration degradation-resistant organic wastewater treatment system ) 是由 王馨悦 骆坚平 裴仁平 侯蒙蒙 郭行 于 2021-07-28 设计创作，主要内容包括：本发明涉及污水处理技术领域,特别涉及高浓度难降解有机废水处理系统,包括格栅集水池、预曝布水调节池、斜管初沉池、微电解池、混凝沉淀池、二次滤池、厌氧氨氧化器、反渗透装置和集水池；反渗透装置的浓水出口和反冲洗口分别通过第一回流管道和第二回流管道与厌氧氨氧化器和集水池连通。与现有技术相比,本发明设计合理,操作方便,自动化运行程度高,运行维护简单,具有运行能耗低、处理效率高、二次污染小和占地面积小等优点,同时提高设备的持续运行能力及处理效果,并节约运行成本,提高经济效益。(The invention relates to the technical field of sewage treatment, in particular to a high-concentration degradation-resistant organic wastewater treatment system, which comprises a grid water collecting tank, a pre-aeration water regulating tank, an inclined tube primary sedimentation tank, a micro-electrolysis tank, a coagulating sedimentation tank, a secondary filter tank, an anaerobic ammonia oxidation device, a reverse osmosis device and a water collecting tank; the concentrated water outlet and the back flushing port of the reverse osmosis device are respectively communicated with the anaerobic ammonia oxidation device and the water collecting tank through a first return pipeline and a second return pipeline. Compared with the prior art, the invention has the advantages of reasonable design, convenient operation, high automation degree, simple operation and maintenance, low operation energy consumption, high treatment efficiency, small secondary pollution, small occupied area and the like, improves the continuous operation capacity and treatment effect of equipment, saves the operation cost and improves the economic benefit.)

1. High concentration refractory organic waste water processing system, its characterized in that: comprises a grid water collecting tank (1), a pre-aeration water distribution regulating tank (2), an inclined tube primary sedimentation tank (3), a micro-electrolysis tank (4), a coagulating sedimentation tank, a secondary filter tank, an anaerobic ammonia oxidation device, a reverse osmosis device (8) and a water collecting tank (9); a concentrated water outlet and a back flushing port of the reverse osmosis device (8) are respectively communicated with the anaerobic ammonia oxidation device and the water collecting tank (9) through a first return pipeline (10) and a second return pipeline (11);

anaerobic ammonia oxidation ware includes first cell body (71), vertically in first cell body (71) be equipped with many supports (72), many support (72) are array distribution in first cell body (71), support (72) are from last evenly to being equipped with a plurality of biological filler skeletons (73) down, be equipped with a plurality of annular aeration pipes (58) (74) from last to being equipped with down in first cell body (71), same aeration fan (76) of a plurality of annular aeration pipes (58) (74) pipe connection, first cell body (71) top is equipped with feeding device (77), first cell body (71) bottom is equipped with pH sensor (78), temperature sensor the interior cell wall of first cell body (71) is equipped with heater (75).

2. The system for treating high-concentration refractory organic wastewater according to claim 1, wherein: the annular aeration pipes (58) and (74) are arranged coaxially, and the circumferences of the annular aeration pipes (58) and (74) are gradually increased from top to bottom.

3. The system for treating high-concentration refractory organic wastewater according to claim 1, wherein: the biological filler framework (73) is a hollow disc-shaped framework (731) and a net-shaped plate surface (732) arranged on the disc-shaped framework (731), a biological film is formed on the net-shaped plate surface, the outer layer of the biological film is aerobic nitrosobacteria, and the inner layer of the biological film is anaerobic ammonia oxidizing bacteria.

4. The system for treating high-concentration refractory organic wastewater according to claim 1, wherein: the coagulation sedimentation tank comprises a third tank body (51), the third tank body (51) is divided into a coagulation area (52) and an air flotation area (53) by a vertical clapboard, the coagulation area (52) is communicated with the micro-electrolysis tank (4), the air flotation area (53) is communicated with the secondary filter tank, the coagulation area (52) is communicated with the lower part of the air flotation area (53), an aeration pipe (58) is arranged at the bottom of the air floating zone (53), a horizontal guide rail (54) is arranged at the top of the air floating zone, a sliding block (55) is arranged on the horizontal guide rail (54), a motor is arranged in the sliding block (55), the output shaft of the motor horizontally extends out and is fixedly sleeved with a driving gear (56), a strip-shaped rack (57) is arranged along the length direction of the horizontal guide rail (54), the driving gear (56) is meshed with the strip-shaped rack (57), and a slag collecting pocket (59) is arranged on the sliding block (55).

5. The system for treating high-concentration refractory organic wastewater according to claim 1, wherein: the secondary filter tank comprises a second tank body (61), wherein a coarse sand layer (62), a fine sand layer (63) and an activated carbon layer (64) are arranged in the second tank body (61) from top to bottom.

6. The system for treating high-concentration refractory organic wastewater according to claim 1, wherein: the sludge treatment device is characterized in that a sludge opening is formed in the bottom of the first tank body (71), a three-way valve (101) is arranged on the first backflow pipeline (10), two valve openings of the three-way valve (101) are communicated with the sludge opening and a concentrated water outlet of the reverse osmosis device (8) respectively, another valve opening of the three-way valve (101) is connected with a sludge pipe (102), and a first backflow pump (103) is arranged on the first backflow pipeline (10) between the three-way valve (101) and the reverse osmosis device (8).

7. The system for treating high-concentration refractory organic wastewater according to claim 1, wherein: the water inlet end of the second return pipeline (11) is connected with the water outlet of the water collecting tank (9), and the second return pipeline (11) is provided with a second return pump (111).

8. The system for treating high-concentration refractory organic wastewater according to claim 1, wherein: the device also comprises a controller, wherein the controller is electrically connected with the heater (75), the pH sensor (78), the aeration fan (76), the temperature sensor and the feeding device (77).

Technical Field

The invention relates to the technical field of sewage treatment, in particular to a high-concentration degradation-resistant organic wastewater treatment system.

Background

With the rapid development of social economy and the continuous acceleration of industrialization process in China, more and more industrial organic wastewater is discharged into a water body environment, especially high-concentration organic wastewater, has the problems of high organic matter concentration, complex components, high treatment difficulty, serious environmental pollution, serious pollution to aquatic environment and the like, and seriously threatens the healthy development of human society and the ecological safety of the environment.

At present, the treatment technologies of organic pollutants difficult to degrade in water mainly comprise physical technologies (such as a coprecipitation method, an adsorption method, an extraction method and the like) and chemical technologies (such as an ozone oxidation method, an incineration method, a wet catalytic oxidation method, a photocatalytic method and the like). Among them, the physical method is not widely used in industry because of incomplete treatment of organic wastewater although it is simple to operate and low in operating cost. The chemical oxidation technology is suitable for treating various organic wastewater. The methods of ozone oxidation, photocatalytic oxidation and the like are mainly suitable for removing organic matters with low concentration; although the incineration method can effectively treat high-concentration organic wastewater, the method has high energy consumption and is only economically feasible in industry under the condition that the COD value is higher than 300 g/L.

The traditional biological denitrification technology comprises two stages, namely nitrification and denitrification, wherein the nitrification is to oxidize ammonia nitrogen into nitrate nitrogen through nitrifying bacteria, and the denitrification is to reduce the nitrate nitrogen into nitrogen through denitrifying bacteria, so that the aim of denitrification is fulfilled. In the process, the demand for carbon sources is high, and aiming at the problem of carbon source shortage of domestic sewage in China, extra carbon sources are usually required to be added, so that the sewage treatment cost is increased. The anaerobic ammonia oxidation process has the specific advantages as a novel denitrification process, and the aim of denitrification is fulfilled by generating nitrogen by using anaerobic ammonia oxidation bacteria under the condition of oxygen deficiency by using CO2 as a carbon source, using ammonium salt (NH4-N) as an electron donor and using nitrite (NO2-N) as an electron acceptor. The implementation of the technology needs to use nitrite in sewage as a precondition, and the best treatment effect is achieved by controlling the contents of ammonia nitrogen and nitrite nitrogen. Therefore, the development of efficient treatment technology for organic industrial wastewater with high concentration, toxicity and harm is becoming urgent and important.

Disclosure of Invention

In view of the above-mentioned deficiencies of the background art, the present invention provides a high concentration refractory organic wastewater treatment system.

The technical scheme adopted by the invention is as follows: high concentration refractory organic waste water processing system, the key lies in: comprises a grid water collecting tank, a pre-aeration water distribution regulating tank, an inclined tube primary sedimentation tank, a micro-electrolysis tank, a coagulating sedimentation tank, a secondary filter tank, an anaerobic ammonia oxidation device, a reverse osmosis device and a water collecting tank; a concentrated water outlet and a back flushing port of the reverse osmosis device are respectively communicated with the anaerobic ammonia oxidation device and the water collecting tank through a first return pipeline and a second return pipeline;

anaerobic ammonia oxidation ware includes first cell body, the vertical many supports that are equipped with in the first cell body, many the support is the array distribution in the cell body, the support is from last to evenly being equipped with a plurality of biofilm carrier skeletons down, from last to being equipped with a plurality of annular aeration pipes (58) down in the first cell body, same aeration fan of a plurality of annular aeration pipe (58) pipe connection, the cell body top is equipped with feeding device, the cell body bottom is equipped with pH sensor, temperature sensor the interior cell wall of cell body is equipped with the heater. The method has the advantages that raw water sequentially passes through the grid water collecting tank, the pre-aeration water regulating tank and the inclined tube primary settling tank to remove silt and suspended matters in the wastewater, the water enters the micro-electrolytic tank after being regulated, the organic matters are subjected to catalytic degradation through the reaction of the primary battery, further ferric hydroxide formed by the reaction of ferric ions generated by the micro-electrolytic reaction and alkali is used for precipitating and removing the organic matters in the wastewater, meanwhile, a part of area is partitioned in the area to serve as an air flotation area, scum formed by iron coagulation is removed through the air flotation effect, and the inhibition of an organic carbon source and NO2-N in the wastewater on the activity of anaerobic ammonia oxidation bacteria can be avoided through the anaerobic ammonia oxidizer, so that the stability of a system is ensured, and the total nitrogen removal rate can be further improved.

Preferably, the annular aeration pipes (58) are arranged coaxially, and the circumferences of the annular aeration pipes (58) are gradually increased from top to bottom.

Preferably, the biological filler framework is a hollow disc-shaped framework and a net disc surface arranged on the disc-shaped framework, a biological film is formed on the net disc surface, the outer layer of the biological film is aerobic nitrosobacteria, and the inner layer of the biological film is anaerobic ammonia oxidation bacteria. The effect of this scheme is that the biofilm carrier can improve the oxygen utilization ratio, and the slow anaerobic ammonium oxidation bacterium of growth of enrichment that simultaneously can be fine for the start-up of reactor.

Preferably, the coagulating sedimentation tank includes the third cell body, divide into coagulation district and air supporting district through vertical baffle in the third cell body, the coagulation district with little electrolytic bath intercommunication, air supporting district and secondary filter intercommunication, the lower part intercommunication in coagulation district and air supporting district, air supporting district bottom is equipped with aeration pipe (58), the top in air supporting district is equipped with horizontal guide rail, install the slider on the horizontal guide rail, install the motor in the slider, the output shaft level of motor is stretched out solid cover and is had drive gear, along horizontal guide rail's length direction is equipped with the bar rack, drive gear with the bar rack toothing, be equipped with collection sediment pocket (59) on the slider. The effect of this scheme is through setting up the air supporting behind the coagulating basin and need not deposit, can be quick get rid of the hydroxide and the suspension colloid of the iron in aqueous, efficiency and speed are more excellent.

Preferably, the secondary filter tank comprises a second tank body, and a coarse sand layer, a fine sand layer and an activated carbon layer are arranged in the second tank body from top to bottom. The method has the advantages that COD in the water is removed, the adverse effect of an organic carbon source on the anaerobic ammonia oxidation process is greatly avoided, and the treatment effect of anaerobic ammonia oxidation is improved.

Preferably, a sludge port is formed in the bottom of the first tank body, a three-way valve is arranged on the first backflow pipeline, two valve ports of the three-way valve are respectively communicated with the sludge port and a concentrated water outlet of the reverse osmosis device, the other valve port of the three-way valve is connected with a sludge pipe, and a first backflow pump is arranged on the first backflow pipeline between the three-way valve and the reverse osmosis device. The effect of this scheme is that through the membrane effect realize mud-water separation, and the sludge concentration in anaerobic reactor is maintained to the reflux of concentrated solution part, and partial discharge is handled to the sludge concentration workshop section.

Preferably, the water inlet end of the second backflow pipeline is connected with the water outlet of the water collecting tank, and the second backflow pipeline is provided with a second backflow pump. The effect of this scheme is that utilize the filtrating interval recoil washing membrane module in the reverse osmosis unit in the catch basin, guarantees reverse osmosis unit's normal operating.

Preferably, the device further comprises a controller, wherein the controller is electrically connected with the heater, the pH sensor, the aeration fan, the temperature sensor and the feeding device. The scheme has the effects that the operation of the feeding mechanism and the aeration fan can be automatically controlled, the dissolved oxygen concentration and the pH value in the reactor are controlled under the condition that ammonia oxidizing bacteria grow properly, and the metabolic activity of nitrosobacteria is limited.

Has the advantages that: compared with the prior art, the high-concentration degradation-resistant organic wastewater treatment system provided by the invention has the advantages of reasonable design, convenience in operation, high automatic operation degree and simplicity in operation and maintenance, air floatation is arranged behind the coagulation tank without precipitation, iron hydroxide and suspended colloid in water can be rapidly removed, the efficiency and the speed are better, a secondary filter tank is arranged in front of the anaerobic ammonium oxidation device, the stability of the inlet water quality of the anaerobic ammonium oxidation device is favorably ensured, the inhibition of an organic carbon source and NO2-N in sewage on the activity of anaerobic ammonium oxidation bacteria can be avoided, the stability of the system is ensured, the total nitrogen removal rate can be further improved, a carbon source does not need to be added, the start-up of the reactor is accelerated, the continuous operation capacity and the treatment effect of equipment are improved, and the advantages of low operation energy consumption, high treatment efficiency, small secondary pollution, small occupied area and the like are realized, and the operation cost is saved, and the economic benefit is improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a top view of the anammox apparatus of FIG. 1;

FIG. 3 is the structure of a biological filler skeleton;

fig. 4 is a schematic structural diagram of the coagulation sedimentation tank in fig. 1.

Detailed Description

In order to make the technical solutions of the present invention better understood, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Example 1

As shown in fig. 1, the high-concentration degradation-resistant organic wastewater treatment system comprises a grid water collecting tank, a pre-aeration water adjusting tank 2, an inclined tube primary sedimentation tank 3, a micro-electrolysis tank 4, a coagulating sedimentation tank, a secondary filter tank, an anaerobic ammonia oxidation device, a reverse osmosis device 8 and a water collecting tank 9; a concentrated water outlet and a back flushing port of the reverse osmosis device 8 are respectively communicated with the anaerobic ammonia oxidation device and the water collecting tank 9 through a first return pipeline 10 and a second return pipeline 6; anaerobic ammonia oxidation ware includes first cell body 71, vertically in the first cell body 71 be equipped with many supports 72, many support 72 is the array distribution and is in the first cell body 71, support 72 evenly is equipped with a plurality of biofilm carrier skeletons 73 from last extremely down, be equipped with a plurality of annular aeration pipes 74 from last extremely down in the first cell body 71, same aeration fan 76 of a plurality of annular aeration pipe 74 pipe connections, first cell body 71 top is equipped with feeding device 77, first cell body 71 bottom is equipped with pH sensor 78, temperature sensor the interior cell wall of first cell body 71 is equipped with heater 75.

Example 2

As shown in fig. 1, the high-concentration degradation-resistant organic wastewater treatment system comprises a secondary filter, an anaerobic ammonia oxidation device, a reverse osmosis device 8 and a water collecting tank 9 which are sequentially connected through pipelines; a concentrated water outlet of the reverse osmosis device 8 is communicated with a sludge port of the anaerobic ammonia oxidation device through a first return pipeline 10, a back flushing port of the reverse osmosis device 8 is communicated with a water outlet of the water collecting tank 9 through a second return pipeline 6, and the second return pipeline 6 is provided with a second return pump 111;

the coagulation sedimentation tank comprises a third tank body 71, the third tank body 51 is divided into a coagulation area 52 and an air flotation area 53 through a vertical partition plate, the coagulation area 52 is communicated with the micro-electrolysis tank 4, the air flotation area 53 is communicated with the secondary filter tank, the lower parts of the coagulation area 52 and the air flotation area 53 are communicated, an aeration pipe 58 is arranged at the bottom of the air flotation area 53, a horizontal guide rail 54 is arranged at the top of the air flotation area, a sliding block 55 is arranged on the horizontal guide rail 54, a motor is arranged in the sliding block 55, a driving gear 56 is fixedly sleeved on an output shaft of the motor in a horizontally extending mode, a strip-shaped rack 57 is arranged along the length direction of the horizontal guide rail 54, the driving gear 56 is meshed with the strip-shaped rack 57, and a slag collecting bag 59 is arranged on the sliding block 55;

the secondary filter tank comprises a second tank body 61, and a coarse sand layer 62, a fine sand layer 63 and an activated carbon layer 64 are arranged in the second tank body 61 from top to bottom;

the anaerobic ammonia oxidation device comprises a first tank body 71, the bottom of the first tank body 71 is provided with a sludge port, a three-way valve 101 is arranged on a first return pipeline 10, two valve ports of the three-way valve 101 are respectively communicated with the sludge port and a concentrated water outlet of the reverse osmosis device 8, the other valve port of the three-way valve 101 is connected with a sludge pipe 102, a first return pump 103 is arranged on the first return pipeline 10 between the three-way valve 101 and the reverse osmosis device 8, a plurality of supports 72 are vertically arranged in the first tank body 71, the plurality of supports 72 are distributed in the first tank body 71 in an array manner, the supports 72 are uniformly provided with a plurality of biological filler skeletons 73 from top to bottom, the biological filler skeletons 73 are disc-shaped skeletons 731 with hollow structures and mesh disc surfaces 732 arranged on the disc-shaped skeletons 731, biological membranes are formed on the mesh disc surfaces, the outer layers of the biological membranes are aerobic nitrosobacteria, the inlayer is anaerobic ammonia oxidation fungus, from last to being equipped with a plurality of annular aeration pipes 74 down, it is a plurality of in first cell body 71 annular aeration pipe 74 sets up with the axial lead, annular aeration pipe 74 week is from last to gradually increasing down, and same aeration fan 76 of a plurality of annular aeration pipe 74 pipe connections, first cell body 71 top is equipped with feeding device 77, first cell body 71 bottom is equipped with pH sensor 78, temperature sensor the interior cell wall of first cell body 71 is equipped with heater 75, pH sensor 78, aeration fan 76, temperature sensor and feeding device 77 electric connection director.

Finally, it should be noted that the above-mentioned description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and scope of the present invention.