CN215559718U - Integrated device for comprehensive sewage treatment in factory - Google Patents
Integrated device for comprehensive sewage treatment in factory Download PDFInfo
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- CN215559718U CN215559718U CN202121437008.6U CN202121437008U CN215559718U CN 215559718 U CN215559718 U CN 215559718U CN 202121437008 U CN202121437008 U CN 202121437008U CN 215559718 U CN215559718 U CN 215559718U
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Abstract
The utility model belongs to the technical field of sewage treatment, and particularly relates to an integrated device for comprehensive sewage treatment in a factory, which comprises: the treatment tank comprises an anoxic tank, an aerobic tank and a membrane tank; the water inlet of the anoxic tank is connected with a sewage source; the aerobic tank is communicated with the anoxic tank, and the aerobic tank is communicated with the membrane tank; an aeration assembly adapted to provide oxygen to the aerobic tank and the membrane tank; one end of the backflow assembly is positioned in the membrane pool, and the other end of the backflow assembly is positioned in the anoxic pool and is used for returning sewage in the membrane pool to the anoxic pool; and the membrane group device is arranged in the membrane pool and communicated with the water production assembly for producing water. Compared with the two-stage reflux in the prior art, the integrated device can effectively reduce organic matters, total nitrogen and suspended matters in the sewage only through one-stage reflux, not only occupies small area, but also greatly saves cost.
Description
Technical Field
The utility model belongs to the technical field of sewage treatment, and particularly relates to an integrated device for comprehensive sewage treatment in a factory.
Background
Glycerol is a viscous liquid without color and sweet taste, and has wide application value in the chemical industry of China, but a large amount of glycerol-containing sewage is generated in the production process, and the glycerol sewage is high-concentration organic sewage (namely, the COD concentration is more than 2000 mg/L). Dimethylacetamide (DMAC) is an excellent organic solvent, is mainly used for polymer synthetic fiber spinning and other organic synthesis at home, but DMAC waste water can be generated in the preparation process of a fiber membrane, and the waste water has high COD concentration and is difficult to degrade and contains organic nitrogen. If the industrial sewage is directly discharged into the environment, the ecological balance is seriously damaged, so that the industrial sewage must be treated by adopting a proper and effective means and then discharged after reaching the standard.
The combination of membrane bioreactor and A/O process is a preferred treatment for the industrial wastewater. The membrane bioreactor is a sewage treatment technology combining a separation technology mainly including ultrafiltration or microfiltration with a traditional biological treatment technology, compared with the traditional technology, the membrane bioreactor can completely retain microorganisms in a membrane pool, can respectively control hydraulic retention time and sludge retention time, enables higher sludge concentration to be maintained in the membrane pool, and is beneficial to promoting growth and acclimation of bacteria with slow growth and long generation time such as ammonia oxidizing bacteria and nitrite oxidizing bacteria; the output of the residual sludge is low, and the suspended matters and turbidity of the effluent are close to zero. The A/O process refers to an anoxic/aerobic process, the A/O process mostly adopts a plug flow type or reciprocating type structure, sewage sequentially passes through an anoxic section and an aerobic section, part of aerobic sewage flows back to the anoxic section, and denitrification reaction can be completed without additionally adding a carbon source.
Chinese patent CN212222717U designs an integrated device suitable for glycerol-containing wastewater treatment, which comprises a sewage source, an anoxic tank, an aerobic tank, a membrane filtration tank, a water production tank, an external reflux pipeline, a reflux pump a, a reflux pump B, a biochemical fan and a membrane scrubbing fan. However, the above-mentioned device is provided with two stages of internal reflux, which increases the cost and is relatively complex to operate.
Therefore, in view of the above disadvantages, the present invention is urgently needed to provide an integrated device for comprehensive sewage treatment in a factory.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an integrated device for comprehensive sewage treatment in a factory to solve the problems of high cost and complex operation of a sewage treatment device in the prior art.
The utility model provides an integrated device for comprehensive sewage treatment of a plant area, which comprises: the treatment tank comprises an anoxic tank, an aerobic tank and a membrane tank; the water inlet of the anoxic tank is connected with a sewage source; the aerobic tank is communicated with the anoxic tank, and the aerobic tank is communicated with the membrane tank; the aeration component is arranged in the aerobic tank and is suitable for providing oxygen; one end of the backflow assembly is positioned in the membrane pool, and the other end of the backflow assembly is positioned in the anoxic pool and is used for returning sewage in the membrane pool to the anoxic pool; and the membrane group device is arranged in the membrane pool and communicated with the water production assembly for producing water.
The integrated device for comprehensive sewage treatment in a plant area is further preferably characterized in that two baffles are arranged in the treatment tank, and the two baffles are vertically arranged in the treatment tank and are parallel to each other; the height of two the baffle all is less than the degree of depth of handling the pond, and one of them baffle upper edge with the last along parallel and level of handling the pond, another the lower edge of baffle with the bottom of handling the pond is connected, is suitable for with it is oxygen deficiency pond, good oxygen pond and membrane tank to handle the pond separation.
The integrated device for comprehensive sewage treatment of the plant area further preferably comprises a first aeration disc, a second aeration disc and a blower; the first aeration disc is positioned at the bottom of the aerobic tank, and the second aeration disc is positioned at the bottom of the membrane tank; the air blower is respectively connected with the first aeration disc and the second aeration disc.
The integrated device for the comprehensive sewage treatment of the plant area further preferably comprises two liquid level meters, wherein the two liquid level meters are respectively arranged in the aerobic tank and the membrane tank and are used for detecting the liquid levels of the aerobic tank and the membrane tank.
The integrated device for the comprehensive sewage treatment in the plant area further preferably comprises a plug flow stirrer, wherein the plug flow stirrer is arranged in the anoxic tank and is suitable for stirring and disturbing flow.
The integrated device for comprehensive sewage treatment in a plant area as described above is further preferred that the water production assembly comprises a water production pipe and a suction pump, one end of the water production pipe is connected with the water outlet of the membrane module device, and the other end of the water production pipe extends out of the membrane pool; the suction pump is positioned on the water production pipe.
The integrated device for comprehensive sewage treatment in a plant area as described above is further preferred that the water production assembly further comprises an ultraviolet sterilizer, and the ultraviolet sterilizer is arranged on the water production pipe and is suitable for sterilization.
The integrated device for comprehensive sewage treatment in a plant area further preferably comprises a PLC, and the PLC is respectively connected with the blower, the suction pump, the ultraviolet sterilizer, the plug flow stirrer and the liquid level meter.
The integrated device for comprehensive sewage treatment in the plant area is further preferably characterized in that an emptying pipe is arranged at the bottom of the anoxic tank, and sludge discharge pipes are arranged at the bottoms of the aerobic tank and the membrane tank.
The integrated device for the comprehensive sewage treatment of the plant area further preferably comprises a septic tank and an adjusting tank, wherein the septic tank is connected with the adjusting tank, and the adjusting tank is connected with a water inlet of the anoxic tank.
Compared with the prior art, the utility model has the following advantages:
the utility model discloses an integrated device for comprehensive sewage treatment in a plant area, which comprises a treatment tank, an aeration component, a backflow component and a membrane group device, wherein the treatment tank comprises an anoxic tank, an aerobic tank and a membrane tank; the water inlet of the anoxic tank is connected with a sewage source; the aerobic tank is communicated with the anoxic tank, and the aerobic tank is communicated with the membrane tank; the aeration component is arranged in the aerobic tank and is suitable for providing oxygen; one end of the backflow component is positioned in the membrane tank, and the other end of the backflow component is positioned in the anoxic tank and is used for returning sewage in the aerobic tank to the anoxic tank; the membrane group device is arranged in the aerobic tank, is communicated with the water production assembly and is used for producing water. One end of the backflow component in the structure is positioned in the membrane pool, the other end of the backflow component is positioned in the anoxic pool, the backflow component is suitable for enabling sludge mixed liquor to flow back and circulate, then a large amount of nitrate nitrogen is provided for the anoxic pool, the organic load of the anoxic pool is reduced to a certain degree, and the entered sewage can undergo anoxic reaction and aerobic reaction and is finally filtered by the membrane module to produce water meeting the corresponding discharge standard. Compared with the two-stage reflux in the prior art, the integrated device can effectively reduce organic matters, total nitrogen and suspended matters in the sewage only through one-stage reflux, not only occupies small area, but also greatly saves cost.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural diagram of an integrated plant for integrated wastewater treatment in a plant area according to the present invention.
Description of reference numerals:
1-septic tank, 2-regulating tank, 3-anoxic tank, 4-aerobic tank, 5-membrane tank, 6-lift pump, 7-basket grid, 8-plug flow stirrer, 9-liquid level meter, 10-first aeration disc, 11-second aeration disc, 12-membrane group device, 13-reflux pump, 14-PLC controller, 15-blower, 16-flow detector, 17-ultraviolet sterilizer, 18-suction pump, 19-emptying pipe, 20-sludge discharge pipe, 21-water production pipe and 22-equipment room.
Detailed Description
As shown in fig. 1, the integrated device for integrated wastewater treatment in a plant area disclosed in this embodiment includes:
the treatment tank comprises an anoxic tank 3, an aerobic tank 4 and a membrane tank 5; the water inlet of the anoxic tank 3 is connected with a sewage source; the aerobic tank 4 is communicated with the anoxic tank 3, and the aerobic tank 4 is communicated with the membrane tank 5;
an aeration assembly adapted to provide oxygen to the aerobic tank 4 and the membrane tank 5;
one end of the backflow component is positioned in the membrane tank 5, and the other end of the backflow component is positioned in the anoxic tank 3 and is used for returning the sewage in the membrane tank 5 to the anoxic tank 3;
and the membrane group device 12 is arranged in the membrane pool 5, is communicated with the water production assembly and is used for producing water.
In the above-mentioned structure, sewage flows in oxygen deficiency pond 3 and good oxygen pond 4 through the water inlet of oxygen deficiency pond 3 in proper order, and carry out corresponding oxygen deficiency reaction and good oxygen reaction, then enter into the membrane cisterna through the overflow, rethread membrane group ware 12 filters, make play water quality of water satisfy corresponding emission standard, simultaneously mud in the membrane cisterna can flow back to the oxygen deficiency pond through the backward flow subassembly in, then provide a large amount of nitrate nitrogen for the oxygen deficiency pond, and reduce oxygen deficiency pond organic load to a certain extent, make the oxygen deficiency reaction in the oxygen deficiency pond go on smoothly.
Furthermore, in the structure, two baffles are arranged in the treatment tank, and are vertically arranged in the treatment tank and are parallel to each other; the height of two the baffle all is less than the degree of depth of handling the pond, and one of them baffle upper edge with the last along parallel and level of handling the pond, another the lower edge of baffle with the bottom of handling the pond is connected, is suitable for with it separates to be oxygen deficiency pond 3, aerobic tank 4 and membrane tank 5 to handle the pond. Two the setting of baffle not only will handle the pond and separate into oxygen deficiency pond 3, good oxygen pond 4 and membrane cisterna 5, still makes oxygen deficiency pond 3 and good oxygen bottom of the pool portion intercommunication, good oxygen pond and membrane cisterna top intercommunication, on the one hand for sewage can circulate in order between oxygen deficiency pond 3, good oxygen pond 4 and membrane cisterna 5, can also promote the formation of group's ware inner loop rivers in membrane cisterna 5, optimizes group's ware rivers flow state.
Further, in the above structure, the aeration assembly includes a first aeration disk 10, a second aeration disk 12 and a blower 15; the first aeration disc 10 is positioned at the bottom of the aerobic tank 4, and the second aeration disc 12 is positioned at the bottom of the membrane tank 5; the blower 15 is connected to the first aeration disk 10 and the second aeration disk 12, respectively. Wherein the first aeration disc 10 is used with the blower 15 and is adapted to provide the aerobic tank 4 with oxygen for aerobic reaction, and the second aeration disc 12 is used with the blower 15 and is adapted to provide the membrane tank 5 with oxygen for aerobic reaction on the one hand and also to flush the membrane module 12 and prevent sludge from accumulating on the surface of the membrane module 12 and keep it clean on the other hand.
Further, the structure further comprises two liquid level meters 9, wherein the two liquid level meters 9 are respectively arranged in the aerobic tank 4 and the membrane tank 5 and used for detecting the liquid levels of the aerobic tank 4 and the membrane tank 5.
Further, the structure also comprises a plug flow stirrer 8, wherein the plug flow stirrer 8 is arranged in the anoxic tank 3 and is suitable for stirring and plug flow. The plug flow stirrer 8 is suitable for uniformly distributing the sewage in the anoxic tank 3 and the microorganisms and the nitrates which flow back from the membrane tank so as to promote the anoxic reaction.
Further, in the above structure, the water production assembly comprises a water production pipe 21 and a suction pump 18, one end of the water production pipe 21 is connected with the water outlet of the membrane module 12, and the other end extends out of the membrane pool; the suction pump 18 is located on the water production pipe 21. Further, the water production assembly further comprises an ultraviolet sterilizer 17, and the ultraviolet sterilizer 17 is arranged on the water production pipe 21 and is suitable for sterilization. Further, the water production assembly further comprises a flow detector 16, and the flow detector 16 is located on the water production pipe 21.
Further, in the above structure, the backflow assembly comprises a sludge pipe and a backflow pump 13, one end of the sludge pipe is located in the anoxic chamber, and the other end of the sludge pipe is located in the filtering chamber; the reflux pump 13 is arranged in the membrane tank 5, is connected with the sludge pipe, and is suitable for pumping the sludge in the membrane tank to the anoxic chamber, so as to provide enough microorganisms for the anoxic tank and supplement nitrate for the anoxic tank to a certain extent.
Further, in the above structure, the bottom of the anoxic tank 3 is provided with an emptying pipe 19, and the bottoms of the aerobic tank 4 and the membrane tank 5 are both provided with a sludge discharge pipe 20.
Further, the structure also comprises a septic tank 1 and an adjusting tank 2, wherein the septic tank 1 is connected with the adjusting tank 2, and the adjusting tank 2 is connected with a water inlet of the anoxic tank 3. Further, the adjusting tank 2 is connected with the water inlet of the anoxic tank 3 through a lift pump 6. And the water inlet of oxygen deficiency pond still is equipped with the hand-basket grid for filter the large granule in the sewage and suspended impurity, prevent that pipeline and equipment from blockking up.
Further, the structure further comprises a PLC Controller 14, and the PLC Controller 14 is connected to the blower 15, the suction pump 18, the ultraviolet sterilizer 17, the impeller stirrer 8, the liquid level meter 9, and the reflux pump 13, respectively. The PLC controller 14 is an electronic system of digital operation, designed for application in an industrial environment, and employs a programmable memory for storing therein instructions for user-oriented operations such as program execution, logical operation execution, sequence control, timing, counting, and arithmetic operations, and controlling various types of machines or manufacturing processes through digital or analog input/output, and is available in the art, and is commercially available, as long as it can control the blower 15, the suction pump 18, the uv sterilizer 17, the impeller agitator 8, the level gauge 9, and the reflux pump 13. The flow control blower 15, the reflux pump 13, the lift pump 6, the suction pump 18, the UV sterilizer 17 and the impeller agitator 8 of the water production pipe 21 are mainly used in this embodiment according to the resulting liquid level of the reaction chamber and the filter chamber. Specifically, the blower 15, the PLC controller 14, the suction pump 18, and the uv sterilizer 17 are all disposed in the equipment room 22.
Specifically, this example illustrates the use of the integrated device for integrated plant wastewater treatment, which is an example of comprehensive wastewater containing domestic wastewater and industrial wastewater (mainly containing glycerol, a small amount of mildewproof agent and DMAC wastewater):
specifically, the COD concentration of the comprehensive sewage is about 4500mg/L, the ammonia nitrogen concentration is 45mg/L, and the total nitrogen concentration is 80 mg/L. The sludge is firstly discharged into a septic tank 1 to achieve the purpose of precipitating or killing parasitic ova and intestinal pathogenic bacteria in excrement, and meanwhile, the settled sludge can be subjected to anaerobic fermentation to decompose certain organic matters. Pollutants overflow to an adjusting tank 2 after staying for 24 hours in a septic tank 1, the average COD concentration of sewage in the adjusting tank 2 is 4000mg/L, the sewage in the adjusting tank 2 is lifted to an anoxic tank 3 through a lifting pump 6, large-particle impurities are filtered through a basket grid 7 at the front end of the anoxic tank 3, dissolved oxygen in the anoxic tank 3 is controlled to be below 0.5mg/L, the temperature is maintained to be above 13 ℃, the pH value is 6-8, a sludge mixed liquid flows back to the anoxic tank 3 through a backflow pump 13 to provide a large amount of nitrate nitrogen, a proper amount of microorganisms are maintained, and the sludge concentration is maintained to be 6000 mg/L. The sewage can greatly reduce the concentration of nitrate nitrogen and ensure the COD and BOD of the sewage in the anoxic stage5And a part of ammonia nitrogen is removed due to the synthesis of cells. The sewage treated by the anoxic tank 3 overflows to an aerobic tank, wherein aerobic heterotrophic bacteria and nitrobacteria are mainly used as functional bacteria in the aerobic tank, and in order to meet the growth requirement, the dissolved oxygen in the aerobic tank is ensured to be 3-5mg/L, and the aeration rate is 40-45m3The pH value is 7.2-7.6, and the sludge is periodically discharged through a sludge discharge pipe 20, so that the sludge concentration is kept to be 6500 mg/L. COD and BOD in the wastewater at this stage5The ammonia nitrogen concentration is reduced and the nitrate nitrogen concentration is increased continuously. The sewage treated by the aerobic tank overflows to a membrane tank 5, and the inside of the membrane tank 5 is provided withThe hollow fiber membrane module 12 can maintain higher sludge concentration through the micropore interception effect of membrane filaments in the membrane module 12; meanwhile, as the pore diameter of the membrane is small, part of bacteria in water can be intercepted, and the turbidity of the produced water is below 0.3. In order to further kill pathogenic bacteria in the sewage, the water production process is sterilized by an ultraviolet sterilizer 17. In order to prevent the sludge from accumulating on the surface of the membrane filaments, the bottom of the membrane module 12 is provided with a second aeration disc 12, and the air blower 15 aerates the membrane module 12 through the second aeration disc 12 to wash the membrane filaments and keep the surface of the membrane filaments clean. After the sewage is treated by the device shown in the figure 1, the COD average concentration of the effluent is 100mg/L, the ammonia nitrogen average concentration is 1.50mg/L, and the total nitrogen concentration is 7mg/L, which accords with the corresponding discharge standard.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. An integrated plant for integrated wastewater treatment in a plant, comprising:
the treatment tank comprises an anoxic tank, an aerobic tank and a membrane tank; the water inlet of the anoxic tank is connected with a sewage source; the aerobic tank is communicated with the anoxic tank, and the aerobic tank is communicated with the membrane tank;
an aeration assembly adapted to provide oxygen to the aerobic tank and the membrane tank;
one end of the backflow assembly is positioned in the membrane pool, and the other end of the backflow assembly is positioned in the anoxic pool and is used for returning sewage in the membrane pool to the anoxic pool;
and the membrane group device is arranged in the membrane pool and communicated with the water production assembly for producing water.
2. The integrated plant for the integrated plant area sewage treatment according to claim 1, wherein two baffles are arranged in the treatment tank, both of the baffles stand in the treatment tank and are parallel to each other; the height of two the baffle all is less than the degree of depth of handling the pond, and one of them baffle upper edge with the last along parallel and level of handling the pond, another the lower edge of baffle with the bottom of handling the pond is connected, is suitable for with it is oxygen deficiency pond, good oxygen pond and membrane tank to handle the pond separation.
3. The integrated plant for integrated wastewater treatment of a plant according to claim 2, wherein the aeration assembly comprises a first aeration disc, a second aeration disc and a blower; the first aeration disc is positioned at the bottom of the aerobic tank, and the second aeration disc is positioned at the bottom of the membrane tank; the air blower is respectively connected with the first aeration disc and the second aeration disc.
4. The integrated plant for integrated plant sewage treatment according to claim 3, further comprising two level meters respectively disposed in the aerobic tank and the membrane tank for detecting the liquid levels of the aerobic tank and the membrane tank.
5. The integrated plant for the integrated plant area sewage treatment according to claim 4, further comprising a plug flow agitator, wherein the plug flow agitator is arranged in the anoxic tank and is adapted to agitate and disturb the flow.
6. The integrated plant for integrated plant sewage treatment according to claim 5, wherein the water production assembly comprises a water production pipe and a suction pump, one end of the water production pipe is connected with the water outlet of the membrane module device, and the other end of the water production pipe extends out of the membrane pool; the suction pump is positioned on the water production pipe.
7. The integrated plant for integrated plant-based wastewater treatment according to claim 6, wherein the water production assembly further comprises an ultraviolet sterilizer, the ultraviolet sterilizer is disposed on the water production pipe and adapted to sterilize.
8. The integrated plant for integrated plant-based sewage treatment according to claim 7, further comprising a PLC controller, wherein the PLC controller is respectively connected with the blower, the suction pump, the ultraviolet sterilizer, the plug flow agitator and the liquid level meter.
9. The integrated plant for integrated plant sewage treatment according to claim 8, wherein the anoxic tank is provided with an emptying pipe at the bottom thereof, and the aerobic tank and the membrane tank are provided with sludge discharge pipes at the bottoms thereof.
10. The integrated plant for integrated plant sewage treatment according to claim 9, further comprising a septic tank and an adjusting tank, wherein the septic tank is connected with the adjusting tank, and the adjusting tank is connected with the water inlet of the anoxic tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121437008.6U CN215559718U (en) | 2021-06-25 | 2021-06-25 | Integrated device for comprehensive sewage treatment in factory |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121437008.6U CN215559718U (en) | 2021-06-25 | 2021-06-25 | Integrated device for comprehensive sewage treatment in factory |
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| CN215559718U true CN215559718U (en) | 2022-01-18 |
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| CN202121437008.6U Active CN215559718U (en) | 2021-06-25 | 2021-06-25 | Integrated device for comprehensive sewage treatment in factory |
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- 2021-06-25 CN CN202121437008.6U patent/CN215559718U/en active Active
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