CN212334924U - Treatment device for polyacrylamide-containing organic wastewater - Google Patents
Treatment device for polyacrylamide-containing organic wastewater Download PDFInfo
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- CN212334924U CN212334924U CN202020195248.9U CN202020195248U CN212334924U CN 212334924 U CN212334924 U CN 212334924U CN 202020195248 U CN202020195248 U CN 202020195248U CN 212334924 U CN212334924 U CN 212334924U
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Abstract
The utility model discloses a processing apparatus who contains polyacrylamide organic waste water, include former pond, cavitation air supporting pond, dissolve gas air supporting pond, neutralization pond, anaerobism pond, oxygen deficiency pond, one-level good oxygen pond, one-level sedimentation tank, second grade good oxygen pond, second grade sedimentation tank and sludge impoundment, the pipe connection sewage import is passed through to the one end in former pond, and the other end passes through the measuring pump and connects cavitation air supporting pond, cavitation air supporting pond dissolves gas air supporting pond through the pipe connection, dissolve gas air supporting pond and pass through the pipe connection neutralization pond, the neutralization pond passes through the pipe connection anaerobism pond. In the scheme, the secondary air flotation tank is additionally arranged before the sewage enters the biochemical system, the system for discharging the polyacrylamide and acrylamide monomers in the sewage after flotation is carried out, the influence on the subsequent biochemical system is reduced, the long-period stable operation of the device is facilitated, the operation cost is low, the neutralization tank is used for removing the nitrogen stripping system, the denitrifying agent is not added, the adding amount of sodium hydroxide and hydrochloric acid is reduced, and the operation cost is reduced.
Description
Technical Field
The utility model relates to a waste water treatment field, more specifically say, relate to a processing apparatus who contains polyacrylamide organic waste water.
Background
The Polyacrylamide (PAM) production industry generally adopts the A2O technology to treat production sewage at present, and the technology has been developed into the mainstream technology of the polyacrylamide production industry along with the strict requirements and implementation of the national environmental protection policy. The sewage treatment technology has the advantages of high treatment efficiency, simple operation and the like. However, the problem that the treatment of waste water produced by Polyacrylamide (PAM) is difficult to solve by combining engineering cases and test data, the treatment and recycling force of the waste water in the industry is further improved, and the ecological environment is protected.
At present, the commonly adopted scheme for treating the wastewater in the Polyacrylamide (PAM) production industry is as follows: A2O route. The route has the problems of low investment, high operation cost and the like, and the operation cost is more than 15 yuan per ton of water; in the process, sodium hydroxide is added to adjust the PH10 of the sewage in a nitrogen stripping unit, a denitrifying agent is added to aerate the sewage to strip part of ammonia nitrogen in the sewage, hydrochloric acid is added to adjust the PH 7 of the sewage to enter an anaerobic tank, the dosage of the agent is large, and the operation cost is high. Polyacrylamide and acrylamide monomers in the sewage are not removed and enter a subsequent biochemical system along with the sewage to cause sludge agglomeration and accumulation, so that the sludge flowability of a sedimentation tank is poor, the activated sludge is anaerobic, the effluent quality is influenced, and the long-term stable operation is not realized. The instrument control is few, can't real time monitoring, and personnel intensity of labour is big, in case the big fluctuation that appears influences that the play water is discharge up to standard. The polyacrylamide and acrylamide monomers in the sewage have certain toxic effect on biochemical sludge, and the sewage treatment capacity of the device is low.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the prior art, the utility model aims to provide a processing apparatus who contains polyacrylamide organic waste water.
In order to solve the above problem, the utility model adopts the following technical scheme: a treatment device for polyacrylamide-containing organic wastewater comprises a raw water pool, a cavitation air flotation pool, a dissolved air flotation pool, a neutralization water pool, an anaerobic pool, an anoxic pool, a primary aerobic pool, a primary sedimentation pool, a secondary aerobic pool, a secondary sedimentation pool and a sludge pool, one end of the raw water pool is connected with a sewage inlet through a pipeline, the other end of the raw water pool is connected with the cavitation air flotation pool through a metering pump, the cavitation air flotation tank is connected with the dissolved air flotation tank through a pipeline, the dissolved air flotation tank is connected with the neutralization water tank through a pipeline, the neutralization water tank is connected with the anaerobic tank through a pipeline, the anaerobic tank is connected with the anoxic tank through a pipeline, the anoxic tank is connected with a primary aerobic tank through a pipeline, the primary aerobic tank is connected with a primary sedimentation tank through a pipeline, the first-stage sedimentation tank is connected with the second-stage aerobic tank through a pipeline, and the second-stage aerobic tank is connected with one end of the second-stage sedimentation tank through a pipeline.
Furthermore, the other end of the secondary sedimentation tank is connected with a sewage discharge pipe.
Furthermore, the secondary sedimentation tank is respectively connected with the sludge tank and the secondary aerobic tank through a reflux pump.
Furthermore, the primary sedimentation tank is respectively connected with a sludge tank, an anoxic tank and an anaerobic tank through a reflux pump.
Further, the cavitation air flotation tank and the dissolved air flotation tank are respectively connected with a sludge tank through pipelines.
Compared with the prior art, the utility model has the advantages of:
in the scheme, the secondary air flotation tank is additionally arranged before the sewage enters the biochemical system, the system for discharging the polyacrylamide and acrylamide monomers in the sewage after flotation is carried out, the influence on the subsequent biochemical system is reduced, the long-period stable operation of the device is facilitated, the operation cost is low, the neutralization tank is used for removing the nitrogen stripping system, the denitrifying agent is not added, the adding amount of sodium hydroxide and hydrochloric acid is reduced, and the operation cost is reduced.
The system has high automation degree. The concrete change is as follows:
(1) ultrasonic level meters are arranged in a raw water tank and a sludge tank, so that real-time monitoring is realized, and the sewage tank is prevented from overflowing to pollute the environment.
(2) The dissolved oxygen detectors are added in the first aerobic detector and the second aerobic detector, real-time monitoring is carried out, air quantity is adjusted according to data, oxygen utilization rate is increased, waste is avoided, operation cost is reduced, and long-period stable operation of the device is facilitated.
(3) PH detectors are additionally arranged in the raw water tank and the neutralization tank, real-time monitoring is realized, the adding amount of sodium hydroxide and hydrochloric acid is timely adjusted according to data, the operation cost is reduced, and meanwhile, the long-period stable operation of the device is facilitated.
(4) After polyacrylamide and acrylamide monomers in sewage are removed in the air floatation tank, toxic substances in the sewage are reduced, COD is reduced, and the treatment capacity of a subsequent biochemical tank is increased.
Drawings
Fig. 1 is a schematic flow chart of the present invention.
The cooling system comprises a cooler 1, a cooling channel 101, a circulating water pump 2, a water tank 3, a first temperature measuring element 4, a controller 5, a first water discharge electromagnetic valve 6, a water inlet electromagnetic valve 7, a second temperature measuring element 8, a second water discharge electromagnetic valve 9, a floating ball switch 10, a water inlet 11, a water outlet 12 and a cooling fan 13.
Detailed Description
The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention based on the embodiments of the present invention.
Referring to fig. 1, a device for treating organic wastewater containing polyacrylamide comprises a raw water pool, a cavitation air flotation pool, a dissolved air flotation pool, a neutralization pool, an anaerobic pool, an anoxic pool, a primary aerobic pool, a primary sedimentation pool, a secondary aerobic pool, a secondary sedimentation pool and a sludge pool, wherein one end of the raw water pool is connected with a sewage inlet through a pipeline, the other end of the raw water pool is connected with the cavitation air flotation pool through a metering pump, the cavitation air flotation pool is connected with the dissolved air flotation pool through a pipeline, the dissolved air flotation pool is connected with the neutralization pool through a pipeline, the neutralization pool is connected with the anaerobic pool through a pipeline, the anaerobic pool is connected with the anoxic pool through a pipeline, the anoxic pool is connected with the primary aerobic pool through a pipeline, the primary aerobic pool is connected with the primary sedimentation pool through a pipeline, the primary sedimentation pool is connected with the secondary aerobic pool through a pipeline, the secondary aerobic pool is connected with the, the second grade sedimentation tank passes through the backwash pump and connects sludge impoundment and second grade good oxygen pond respectively, sludge impoundment, oxygen deficiency pond and anaerobism pond are connected respectively to the first order sedimentation tank through the backwash pump, cavitation air supporting pond and dissolved air supporting pond are respectively through pipe connection sludge impoundment.
It should be noted that: the process wastewater in the polyacrylamide production process firstly enters a raw water collecting tank to buffer the wastewater to complete the function of homogeneous regulation, the liquid level and the PH of the raw water tank are monitored in real time according to a liquid level meter and a PH meter (the PH is controlled to be 7-9), then the wastewater is sent into a cavitation air flotation tank 2 through a centrifugal pump 1 (the operating pressure is 0.03MPa), meanwhile, an anionic polyacrylamide solution (the dosing concentration is 1ppm) and a polyaluminium chloride solution (the dosing concentration is 54ppm) continuously enter the raw water tank to a pipeline of the cavitation air flotation tank 2 through a diaphragm metering pump, then water in the cavitation air flotation tank 2 enters a dissolved air flotation tank 3 through an upper overflow port, meanwhile, the anionic polyacrylamide solution (the concentration is 1%) and the polyaluminium chloride solution (the concentration is 50%) continuously enter the cavitation air flotation tank to a pipeline of the dissolved air flotation tank 3 through a metering pump, sewage enters a neutralization tank 4 through an upper water outlet of the dissolved air flotation, floating slag and bottom sludge which are selected by floating are discharged to a sludge tank 11, a PH meter is arranged at an outlet of a neutralization tank 4 in a baffling mode, the PH of the sewage which enters an anaerobic tank is monitored in real time (the PH control range is 6.8-7.2), a sodium hydroxide and hydrochloric acid adding pipeline is designed at an inlet of the neutralization tank 4, a medicament is added according to the PH to ensure that the PH of the sewage which enters the anaerobic tank 5 is 6.8-7.2, the sewage enters the anaerobic tank 5 to be mixed with return sludge, under the action of facultative anaerobic fermentation bacteria, macromolecular organic matters which are easy to biodegrade in the sewage are converted into micromolecular organic matters which are easy to be desorbed and collected easily, the micromolecular organic matters which are absorbed by phosphorus accumulating bacteria are stored in vivo in a PHB mode, the required energy is from decomposition of a phosphorus accumulating chain, then the sewage enters an anoxic tank 6, and the denitrifying bacteria carry out denitrifying reaction on NO 3-carried along with return mixed liquor by utilizing organic radicals in the sewage, when sewage enters an aerobic tank 7, the concentration of organic matters in the sewage is low, phosphorus accumulating bacteria obtain energy through decomposing PHB in the body for bacteria proliferation, soluble phosphorus in the sewage is absorbed in the body and stored in a phosphorus accumulating chain mode, aerobic sludge enters a primary sedimentation tank 7 along with the sewage, part of the aerobic sludge in the primary sedimentation tank 8 flows back to an anoxic tank 6 and is discharged out of a system to a sludge tank 11 in a residual sludge mode, supernatant of the primary sedimentation tank 8 enters a secondary aerobic tank 9 to further remove residual ammonia nitrogen, COD and soluble phosphorus in the sewage, and treated sewage mixed liquid enters a secondary sedimentation tank 10 to be precipitated and then is discharged out of the system, the concentration of the organic matters in an aerobic zone in the system is low, and the growth of autotrophic nitrifying bacteria in the aerobic tank is facilitated.
Three different environmental conditions of anaerobic property, anoxic property and aerobic property are matched with different microbial floras, so that the functions of removing organic matters, nitrogen and phosphorus can be simultaneously met; the anaerobic-anoxic tank is provided with the submersible stirrer only by stirring gently to mix the anaerobic-anoxic tank without an aeration system to increase dissolved oxygen; in the sedimentation tank, an air flotation tank is added in a pretreatment stage to remove polyacrylamide and acrylamide monomers in sewage in a flotation manner to the maximum extent so as to avoid an anaerobic-anoxic state, so that phosphorus is prevented from being released by phosphorus accumulating bacteria to reduce the quality of effluent water and N2 generated by denitrification to interfere with sedimentation, and the sludge reflux is adjusted according to 1-2 times of the water inflow; the design increases the secondary aerobic pond and the secondary sedimentation pond to further treat the residual ammonia nitrogen and COD in the effluent of the primary sedimentation pond to ensure that the ammonia nitrogen and COD in the effluent reach the standard and are discharged, the sludge reflux is adjusted according to 1-2 times of the water inflow, the dissolved oxygen in the aerobic pond is controlled to be 4mg/L, the sludge sedimentation ratio is controlled to be 30-60%, the hydraulic retention time in the anaerobic pond is 18h, the hydraulic retention time in the anoxic pond is 4.5h, the hydraulic retention time in the aerobic pond is 14h, and the sludge is discharged from the primary sedimentation pond and the secondary sedimentation pond once every 3 days to ensure the sludge activity.
The above description is only the preferred embodiment of the present invention; the scope of the present invention is not limited thereto. Any person skilled in the art should also be able to cover the technical scope of the present invention by replacing or changing the technical solution and the improvement concept of the present invention with equivalents and modifications within the technical scope of the present invention.
Claims (5)
1. The utility model provides a processing apparatus who contains polyacrylamide organic waste water, includes former pond, cavitation air supporting pond, dissolves gas air supporting pond, neutralization pond, anaerobism pond, oxygen deficiency pond, one-level good oxygen pond, one-level sedimentation tank, second grade good oxygen pond, second grade sedimentation tank and sludge impoundment, its characterized in that: the one end in former pond passes through the pipe connection sewage import, and the other end passes through the measuring pump and connects the cavitation air supporting pond, cavitation air supporting pond dissolves the gas air supporting pond through the pipe connection, dissolve gas air supporting pond and pass through pipe connection neutralization pond, the neutralization pond passes through the pipe connection anaerobism pond, the anaerobism pond passes through the pipe connection oxygen deficiency pond, the oxygen deficiency pond passes through the pipe connection one-level aerobic tank, the one-level aerobic tank passes through the pipe connection one-level sedimentation tank, the one-level sedimentation tank passes through the pipe connection second grade aerobic tank, the second grade aerobic tank passes through the one end of pipe connection second grade sedimentation tank.
2. The apparatus for treating polyacrylamide-containing organic wastewater as defined in claim 1, wherein: and the other end of the secondary sedimentation tank is connected with a sewage discharge pipe.
3. The apparatus for treating polyacrylamide-containing organic wastewater as defined in claim 1, wherein: the second-stage sedimentation tank is respectively connected with the sludge tank and the second-stage aerobic tank through a reflux pump.
4. The apparatus for treating polyacrylamide-containing organic wastewater as defined in claim 1, wherein: the primary sedimentation tank is respectively connected with the sludge tank, the anoxic tank and the anaerobic tank through a reflux pump.
5. The apparatus for treating polyacrylamide-containing organic wastewater as defined in claim 1, wherein: the cavitation air flotation tank and the dissolved air flotation tank are respectively connected with a sludge tank through pipelines.
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| CN202020195248.9U CN212334924U (en) | 2020-02-22 | 2020-02-22 | Treatment device for polyacrylamide-containing organic wastewater |
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| CN202020195248.9U CN212334924U (en) | 2020-02-22 | 2020-02-22 | Treatment device for polyacrylamide-containing organic wastewater |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113860653A (en) * | 2021-10-27 | 2021-12-31 | 华电水务科技股份有限公司 | Sewage treatment system and process utilizing filamentous fungi and controlling sludge bulking |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113860653A (en) * | 2021-10-27 | 2021-12-31 | 华电水务科技股份有限公司 | Sewage treatment system and process utilizing filamentous fungi and controlling sludge bulking |
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