CN105502831A - Waste water biochemical treatment device and technology - Google Patents
Waste water biochemical treatment device and technology Download PDFInfo
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- CN105502831A CN105502831A CN201610016591.0A CN201610016591A CN105502831A CN 105502831 A CN105502831 A CN 105502831A CN 201610016591 A CN201610016591 A CN 201610016591A CN 105502831 A CN105502831 A CN 105502831A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
- C02F2101/203—Iron or iron compound
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1205—Particular type of activated sludge processes
- C02F3/1221—Particular type of activated sludge processes comprising treatment of the recirculated sludge
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1268—Membrane bioreactor systems
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/308—Biological phosphorus removal
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- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention provides a waste water biochemical treatment device and technology. The device comprises a biological treatment unit and an MBR reaction tank which are connected with each other, and a chemical dosing tank for dosing PAC and PAM is arranged between the biological treatment unit and the MBR reaction tank. The treatment technology comprises the steps that biochemical treatment is conducted on waste water to be treated, PAC treatment and PAM treatment are conducted on the biochemical treatment terminal waste water, MBR treatment is conducted on the treated waste water, and discharged water reaching the standard is obtained. The waste water biochemical treatment device and technology can remove iron ions in the waste water thoroughly; meanwhile, chromaticity and organic pollutants are further reduced effectively, and the problem that the chromaticity, suspended substances and the organic pollutants can not be upgraded in the past is solved.
Description
Technical field
The invention belongs to technical field of sewage, relate to a kind of waste water biochemical treatment device and technique.
Background technology
Traditional A
no+MBR technique biochemical processing process, i.e. acidication-(anaerobe-oxygen deficient)-aerobic-MBR (Anaerobic-Anoxic-Oxic+MembraneBio-Reactor), mainly can be divided into three parts: one is dephosphorization, phosphorus in sewage is under anaerobic state, discharge polyP bacteria, again by its more absorption under aerobic situation, discharge system with the form of excess sludge.Two is denitrogenations, due to the effect of double oxygen denitrifier, utilizes BOD in water as hydrogen donor (organic carbon source), to become nitrogen to escape into air by from the nitrate in Aerobic Pond mixed solution and nitrate reductase, reaches the object of denitrogenation.
Along with the popularization of MBR, current most of biological inoculum method process waste water arranges MBR membrane-biotechnology at end, improve original biological inoculum treatment technology, eliminate most suspended substance and organic pollutant, but no matter adopt in chemical Treatment process at leading portion adopts oxidation style or reduction method all can introduce in ferrous ion or waste water originally containing iron ion, after process, water quality color is normal, but ferrous ions becomes iron ion after biological inoculum method, water outlet is turned to be yellow causes colourity to exceed standard, and iron ion also very easily exceeds standard simultaneously; Moreover part colloidalmaterial through MBR film, can enter draining, organism, ammonia nitrogen, total phosphorus is caused to be difficult to reach the primary standard of " integrated wastewater discharge standard (GB8978-1996) ".Be difficult to the environmental requirement meeting increasingly stringent, this adds scale wastewater treatment burden virtually, causes enterprise's draining puzzled.
CN104724825A discloses a kind of sewage water treatment method, and described method comprises: sewage is injected pre-anoxic pond, anaerobic pond and anoxic pond or injects anaerobic pond, anoxic pond respectively or only inject anaerobic pond by inlet channel respectively; Described pre-anoxic pond carries out the anoxic denitrification reaction of returned sluge and sewage; Described anaerobic pond carries out the anaerobic phosphorus release of biochemical dephosphorization; Described anoxic pond carries out denitrification denitrogenation; Aerobic Pond carries out the absorption of organic matter degradation, organonitrogen and Ammonia Nitrification, phosphorus; Rear anoxic pond carries out simultaneous nitrification-denitrification process; Sequence batch (inclined-plate clarifying basin, carry out the concentrated of mud-water separation process and returned sluge, described returned sluge is back to described pre-anoxic pond.But the sewage after the method process is difficult to the primary standard reaching " integrated wastewater discharge standard (GB8978-1996) ".
CN103723880A discloses a kind of P-MBR biochemical treatment system and technique, P-MBR biochemical treatment system wherein, have: mixing zone, absorption Ning Xu district, biochemical reaction zone, negative area, membrane filtration district, wherein mixing zone is for entering waste water and adding new active filler, and is tentatively mixed with the thing of dosing newly added by waste water to be processed; Absorption Ning Xu district for holding the mixed waste water in absorption mixing zone, and makes its indwelling for some time, so that the objectionable impurities in waste water and active filler are fully combined produce solidifying wadding a quilt with cotton; Biochemical reaction zone receives the waste water from the reaction of absorption Ning Xu district, and described waste water and described active substance are fully reacted in described biochemical reaction zone; Negative area is used for the waste water after biochemical reaction to precipitate in this region, to make the precipitate in mixed solution, thus clear liquid is separated; And membrane filtration district, filter for the clear liquid formed negative area, and be drawn out of filtering rear purifying waste water of formation.But this biochemical treatment system still can not solve the problem that iron ion exceeds standard.
In this context, be necessary to provide a kind of degree of depth to remove the Technology of organism, ammonia nitrogen, total phosphorus and colourity in waste water.
Summary of the invention
For the deficiency that prior art exists, the object of the present invention is to provide a kind of waste water biochemical treatment device and technique, described device and technique can more thorough by the iron ion removing in waste water, effectively colourity and organic pollutant are reduced further simultaneously, solve colourity, suspended substance and organic pollutant in the past and cannot propose target requirement.
For reaching this object, the present invention by the following technical solutions:
An object of the present invention is to provide a kind of waste water biochemical treatment device, and described device comprises interconnective biological processing unit and MBR reaction tank, is provided with the dispensing pond adding PAC and PAM between described biological processing unit and MBR reaction tank.
Described PAM comprises polymerize aluminum chloride and/or the polyaluminium sulfate of acidity and alkalescence; Described PAM is polyacrylamide.
The ultimate principle of described waste water biochemical treatment device process waste water is: waste water enters biological processing unit, organic degraded is carried out in biological processing unit, a large amount of propagation of microorganism, waste water after biological processing unit process enters dispensing pond, the PAC added in dispensing pond has coagulation, small colloid and ion are carried out bridge joint by it, form tiny particle; The PAM added in dispensing pond makes fine particle grow further, makes the settleability that particle is specifically good; Simultaneously PAC to microorganism without any toxic action, and PAM as macromolecule organic by backflow can also supplementary carbon source as the nutritive substance of microorganism, colloid in waste water and ion are reduced, again through the separation of MBR reaction tank, the primary standard that water outlet can meet completely " integrated wastewater discharge standard (GB8978-1996) ".
Described device while thoroughly being removed by the iron ion in waste water, can reduce colourity and the organic contamination substrate concentration of waste water effectively, solves colourity, suspended substance and organic pollutant in the past and cannot propose target requirement.
Described device also comprises the administration system for adding PAC and PAM to described dispensing pond, and described administration system is connected with back segment with the leading portion in dispensing pond respectively.Described administration system first can add PAC in dispensing pond, then adds PAM in dispensing pond.PAC mainly plays coagulation effect, and PAM plays crane span structure effect.PAC adds, in dispensing pond leading portion, small colloid and ion is carried out bridge joint, forms tiny particle; Under the effect of PAM, fine particle grows further, makes the settleability that particle is specifically good.
Described biological processing unit comprises connected anaerobic pond, biological denitrificaion pond and Aerobic Pond, and described Aerobic Pond is connected with described dispensing pond.Waste water carries out the release of phosphorus in anaerobic pond, for the hydrolysis of organic matter reaction in anaerobic pond provides good condition; Contain a large amount of microorganisms in Aerobic Pond and breed rapidly, consuming labile organic compound in sewage; PolyP bacteria rejuvenates simultaneously, amount reproduction, the dissolved phosphorus in excess ingestion environment, and strengthening reduces COD, phosphorus removal functional.Described biological processing unit is for reducing COD and the phosphorus eliminated in waste water, and it can be A
na in O-MBR process system
no (acidication-(anaerobe-oxygen deficient)-aerobic) unit, wherein, n can be 1,2,3,4 or 5 etc.Those skilled in the art can select different biological processing units as required.
Be provided with the diving mixer for shaking pool bottom sludge in described biological denitrificaion pond, described diving mixer is for shaking the mud at the bottom of anaerobic pond.
Be connected with described Aerobic Pond bottom described MBR reaction tank.The mud part that described MBR reaction tank produces is back in described Aerobic Pond, and rest part is discharged.The PAM contained in the mud of backflow is macromolecule organic, and it can be used as the nutritive substance of microorganism, is its supplementary carbon source.
Two of object of the present invention is to provide a kind of biochemical treatment process for wastewater utilizing device described above, described technique is: pending waste water is carried out biochemical treatment, afterwards, PAC process and PAM process are carried out successively to the waste water after biochemical treatment, waste water after process, again through MBR process, obtains qualified discharge water.
Described qualified discharge water refers to that water outlet meets the water of the primary standard of " integrated wastewater discharge standard (GB8978-1996) ".
PAC mainly plays coagulation effect, and PAM plays crane span structure effect.PAC adds, in dispensing pond leading portion, small colloid and ion is carried out bridge joint, forms tiny particle; Under the effect of PAM, fine particle grows further, makes the settleability that particle is specifically good.
Described biological treatment is biological anaerobic treatment, biological denitrificaion process and biology aerobic process.
Preferably, described pending waste water carries out bio anaerobic process, biological denitrificaion process and biology aerobic process successively.
Pending waste water carries out the release of phosphorus in bio anaerobic treating processes, for hydrolysis reaction organic in pending waste water provides good condition; In Aerobic, a large amount of microorganisms breeds rapidly, consumes the labile organic compound in waste water; PolyP bacteria rejuvenates simultaneously, amount reproduction, the dissolved phosphorus in excess ingestion environment, and strengthening reduces COD, phosphorus removal functional.
Preferably, described bio anaerobic process is carried out in anaerobic pond.
Preferably, carry out the waste water of described bio anaerobic process, its pH value is 8 ~ 9, as 8,8.5 or 9 etc.
Preferably, described biological denitrificaion process is carried out in biological denitrificaion pond.
Preferably, described biology aerobic process is carried out in Aerobic Pond.
In described PAC process, the usage quantity of PAC is 15 ~ 25ppm, as 16ppm, 17ppm, 18ppm, 19ppm, 20ppm, 22ppm or 24ppm etc.
Preferably, in described PAM process, the usage quantity of PAM is 1.5 ~ 2.5ppm, as 1.6ppm, 1.8ppm, 2.0ppm, 2.2ppm or 2.4ppm etc.
Preferably, the weight-average molecular weight of the PAM used in described PAM process is 1,800 ten thousand.Molecular weight is little, then treatment effect is slightly poor.
The dosage of described PAC and PAM can according to the pollutent situation in the waste water of reality and character adjustment, unsuitable too much or very few, adds and too much can affect sludge activity and sludge quantity, adds very fewly not reach removal effect.
Preferably, the ratio of the usage quantity of described PAC and PAM is (8 ~ 15): 1, as 9:1,10:1,11:1,12:1,13:1 or 14:1 etc.PAC mainly plays coagulation effect, and PAM plays crane span structure effect, and the ratio that drops into is too large, can increase the output of mud, and the ratio that drops into is too small, and flocculence and the settleability of mud are poor, cause color removal to be difficult to reach best effect.
Preferably, described PAC process 5 ~ 15min more Zao than the time of PAM process, as morning 6min, 7min, 8min, 9min, 10min, 12min or 14min etc.It is that 5 ~ 15min contributes to obtaining better Pollutant Treatment effect that control adds the time difference.Add the time difference short, then PAC does not have fully and waste water mixing, and is directly combined with PAM, affects agent efficacy; Add the time difference long, then need augmenting response pond volume, affect overall investment.
The sludge reflux that described MBR process produces re-starts biochemical treatment.The PAM contained in the mud that described MBR process produces is macromolecule organic, can be used as the nutritive substance of microorganism, can be biological treatment supplementary carbon source.
Preferably, the reflux ratio of described mud is 1:(2-3), as 1:2.2,1:2.3,1:2.5,1:2.6 or 1:2.8 etc.; The delivery ratio of described mud is 1:(0.04-0.08), as 1:0.05,1:0.06 or 1:0.07 etc.
As preferred technical scheme, described biochemical treatment process for wastewater is: pending waste water is carried out bio anaerobic process successively, biological denitrificaion process and biology aerobic process, afterwards, waste water after biological treatment is carried out PAC process and PAM process successively, the time difference of PAC process and PAM process is 5 ~ 15min, , in PAC process, the usage quantity of PAC is 15 ~ 25ppm, in PAM process, the usage quantity of PAM is 1.5 ~ 2.5ppm, the weight-average molecular weight of PAM is 1,800 ten thousand, the ratio of the usage quantity of PAC and PAM is (8 ~ 15): 1, waste water after process is again through MBR process, obtain qualified discharge water, wherein, the sludge reflux that MBR process produces re-starts biology aerobic process, the reflux ratio of mud is 1:(2-3), the delivery ratio of mud is 1:(0.04-0.08).
Compared with prior art, beneficial effect of the present invention is:
Waste water biochemical treatment device provided by the invention make through biological processing unit can biochemical waste water by behind the dispensing pond that adds PAC and PAM, enter MBR reactor again, in dispensing pond PAC and PAM that add can by the iron ion in waste water and colloidalmaterial coprecipitated, destroy waste water original colloid equilibrium, thus reach later stage better iron ion and deviate from effect;
Waste water biochemical treatment device provided by the invention have studied the feature of MBR film itself, from retaining diameter, improving waste water mixed solution state, always reaching higher pollutants removal rate, and turn avoid colloid mucous membrane;
Waste water biochemical treatment device provided by the invention and technique can more thorough by the iron ion removing in waste water, simultaneously effectively colourity and organic pollutant reduced further, solve colourity, suspended substance and organic pollutant in the past and cannot propose target requirement.
Accompanying drawing explanation
Fig. 1 is the AO-PP-MBR treatment unit schematic diagram that the embodiment of the present invention 1 provides.
Fig. 2 is the A that the embodiment of the present invention 2 provides
2o-PP-MBR treatment unit schematic diagram.
Wherein: A represents anaerobic pond, A1 represents hydrolysis acidification pool, A2 represents anoxic pond, and O represents Aerobic Pond, and PP represents PAC and PAM dispensing pond, MBR represents MBR reaction tank, 01 represents wastewater streams through route, and 02 represents sludge reflux, and 03 represents excess sludge discharge, 04 representative adds PAC, and 05 representative adds PAM.
Embodiment
Technical scheme of the present invention is further illustrated by embodiment below in conjunction with accompanying drawing.
Embodiment 1
AO+PP+MBR waste water biochemical treatment device, is comprised the anaerobic pond, activated sludge tank, PAC and PAM that are connected successively by pipeline and to offer medicine pond and MBR reaction tank.
Utilize the technical process of described AO+PP+MBR waste water biochemical treatment device process electroplating wastewater to be: electroplating wastewater by Cemented filling to anaerobic pond A, Aerobic Pond is entered by pulse, Aerobic Pond overflows to PAC and PAM dispensing pond by top, PAC and PAM dispensing pond flows to MBR reaction tank by bottom pre-opened hole, the mixed solution of described MBR reaction tank by sludge reflux pump by sludge reflux to Aerobic Pond leading portion and Impulsive tank, excess sludge is transported to sludge treating system by sludge reflux pump.Return sludge ratio is 1:2.4, and mud delivery ratio is 1:006.
In PAC and PAM of described AO+PP+MBR waste water biochemical treatment device offers medicine pond, add PAC, PAM and PAC and PAM respectively by medicine system, and dosage is identical, is 22ppm.When PAC and PAM adds simultaneously, to be that 1,800 ten thousand, PAC are more Zao than PAM add 5min to the weight-average molecular weight of the dosage of PAC to be the dosage of 20ppm, PAM be 2ppm, PAM.
Pollutant levels in Pollutants in Wastewater content, the primary standard GB8978-1996 Equations of The Second Kind pollutent the highest permission emission concentration of " integrated wastewater discharge standard (GB8978-1996) " and the waste water of AO-MBR process after Pollutant levels in electroplating wastewater, process are as shown in table 1.Unit is milligrams per liter (mg/L).
Table 1
Embodiment 2
A
2o-PP-MBR waste water biochemical treatment device, is comprised the hydrolysis acidification pool, anoxic pond, contact-oxidation pool, PAC and PAM that are connected successively by pipeline and to offer medicine pond and MBR reaction tank, and described PAC and PAM offers medicine in pond and added PAC and PAM.
Adopt described A
2o-PP-MBR waste water biochemical treatment device process electroplating wastewater, its technical process is:
Electroplating wastewater flows to anoxic pond by overflow weir by Cemented filling again to hydrolysis acidification pool, anoxic pond flows to contact-oxidation pool by bottom pre-opened hole, contact-oxidation pool flows automatically to PAC and PAM dispensing pond by top pre-opened hole, PAC and PAM dispensing pond flows to MBR reaction tank by bottom pre-opened hole, the mixed solution of described MBR reaction tank by sludge reflux pump by sludge reflux to anoxic pond and contact-oxidation pool, excess sludge is transported to sludge treating system by sludge reflux pump; Described PAC and PAM dispensing pond adds PAC and PAM by medicine system.Wherein, the dosage of described PAC is 25ppm, the time that the adds 10min more Zao than the time that adds of PAM of the dosage of described PAM to be the weight-average molecular weight of 3.1ppm, PAM be 1,800 ten thousand, PAC; Return sludge ratio is 1:3, and mud delivery ratio is 1:0.08, obtains the water of qualified discharge.
Pollutant levels in electroplating wastewater are identical with the Pollutant levels in the electroplating wastewater in embodiment 1, adopt above-mentioned A
2the concentration of the Pollutants in Wastewater of O-PP-MBR waste water biochemical treatment device process and employing A
2the results are shown in Table shown in 2 of O-MBR process electroplating wastewater.
Table 2
Embodiment 3
A
3o-PP-MBR waste water biochemical treatment device, is comprised the hydrolysis acidification pool, one-level anoxic pond, secondary anoxic pond, contact-oxidation pool, PAC and PAM that are connected successively by pipeline and to offer medicine pond and MBR reaction tank, and described PAC and PAM offers medicine in pond and added PAC and PAM.
Adopt described A
3o-PP-MBR waste water biochemical treatment device process electroplating wastewater, its technical process is:
Electroplating wastewater flows to one-level anoxic pond by overflow weir by Cemented filling again to hydrolysis acidification pool, afterwards by secondary anoxic pond, waste water in secondary anoxic pond flows to contact-oxidation pool by bottom pre-opened hole, contact-oxidation pool flows automatically to PAC and PAM dispensing pond by top pre-opened hole, PAC and PAM dosing pond flows to MBR reaction tank by bottom pre-opened hole, the mixed solution of described MBR reaction tank by sludge reflux pump by sludge reflux to anoxic pond and contact-oxidation pool, excess sludge is transported to sludge treating system by sludge reflux pump; Described PAC and PAM dispensing pond adds PAC and PAM by medicine system.Wherein, the dosage of described PAC is 15ppm, the time that the adds 15min more Zao than the time that adds of PAM of the dosage of described PAM to be the weight-average molecular weight of 1ppm, PAM be 1,800 ten thousand, PAC; Return sludge ratio is 1:2, and mud delivery ratio is 1:0.04.Obtain the water of qualified discharge.
Pollutant levels in described electroplating wastewater are identical with the Pollutant levels in the electroplating wastewater in embodiment 1.Utilize A
3pollutant levels in the electroplating wastewater of O-PP-MBR waste water biochemical treatment device process and employing A
3pollutant levels in the waste water of O-MBR process are as shown in table 3.
Table 3
Comparative example 1
Replace with except bodied ferric sulfate except by PAC, all the other are identical with embodiment 2.
Comparative example 2
Except replacing with except the PAM of the molecular weight of 6,000,000 by the PAM of 1,800 ten thousand molecular weight, all the other are identical with embodiment 2.
Pollutant levels in electroplating wastewater after comparative example 1 and comparative example 2 process are as shown in table 4.
Table 4
Applicant states; the foregoing is only the specific embodiment of the present invention; but protection scope of the present invention is not limited thereto; person of ordinary skill in the field should understand; anyly belong to those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all drop within protection scope of the present invention and open scope.
Claims (10)
1. a waste water biochemical treatment device, described device comprises interconnective biological processing unit and MBR reaction tank, it is characterized in that, is provided with the dispensing pond adding PAC and PAM between described biological processing unit and MBR reaction tank.
2. device according to claim 1, is characterized in that, described device also comprises the administration system for adding PAC and PAM to described dispensing pond, and described administration system is connected with back segment with the leading portion in dispensing pond respectively.
3. device according to claim 1 and 2, is characterized in that, described biological processing unit comprises anaerobic pond connected successively, biological denitrificaion pond and Aerobic Pond, and described Aerobic Pond is connected with described dispensing pond.
4. device according to claim 3, is characterized in that, is provided with the diving mixer for shaking pool bottom sludge in described biological denitrificaion pond.
5. device according to claim 3, is characterized in that, described MBR reaction tank is connected with described Aerobic Pond.
6. utilize the biochemical treatment process for wastewater of the described device of one of claim 1-5, it is characterized in that, described technique is: pending waste water is carried out biochemical treatment, afterwards, polymerization PAC process and PAM process are carried out successively to the waste water after biochemical treatment, waste water after process, again through MBR process, obtains qualified discharge water.
7. technique according to claim 6, is characterized in that, described biochemical treatment is biological anaerobic treatment, biological denitrificaion process and biology aerobic process;
Preferably, described pending water carries out bio anaerobic process, biological denitrificaion process and biology aerobic process successively;
Preferably, described bio anaerobic process is carried out in anaerobic pond;
Preferably, carry out the waste water of described bio anaerobic process, its pH value is 8 ~ 9;
Preferably, described biological denitrificaion process is carried out in biological denitrificaion pond;
Preferably, described biology aerobic process is carried out in Aerobic Pond.
8. the technique according to claim 6 or 7, is characterized in that, in described PAC process, the usage quantity of PAC is 15 ~ 25ppm;
Preferably, in described PAM process, the usage quantity of PAM is 1.5 ~ 2.5ppm;
Preferably, the weight-average molecular weight of the PAM used in described PAM process is 1,800 ten thousand;
Preferably, the ratio of the usage quantity of described PAC and PAM is (8 ~ 15): 1;
Preferably, described PAC process 5 ~ 15min more Zao than the time of PAM process.
9. according to the technique one of claim 6-8 Suo Shu, it is characterized in that, the sludge reflux that described MBR process produces re-starts biochemical treatment;
Preferably, the reflux ratio of described mud is 1:(2-3), the delivery ratio of described mud is 1:(0.04-0.08).
10. according to the technique one of claim 6-9 Suo Shu, it is characterized in that, described technique is: pending waste water is carried out bio anaerobic process successively, biological denitrificaion process and biology aerobic process, afterwards, waste water after biology aerobic process is carried out PAC process and PAM process successively, the time difference of PAC process and PAM process is 5 ~ 15min, in PAC process, the usage quantity of PAC is 15 ~ 25ppm, in PAM process, the usage quantity of PAM is 1.5 ~ 2.5ppm, the weight-average molecular weight of PAM is 1,800 ten thousand, the ratio of the usage quantity of PAC and PAM is (8 ~ 15): 1, waste water after process is again through MBR process, obtain qualified discharge water, wherein, the sludge reflux that MBR process produces re-starts biology aerobic process, the reflux ratio of mud is 1:(2-3), the delivery ratio of mud is 1:(0.04-0.08).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110563281A (en) * | 2019-10-09 | 2019-12-13 | 江苏沃尔特环保有限公司 | Organic wastewater treatment system is used in glass fiber cloth production |
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| CN110563281A (en) * | 2019-10-09 | 2019-12-13 | 江苏沃尔特环保有限公司 | Organic wastewater treatment system is used in glass fiber cloth production |
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| CN105502831B (en) | 2018-12-14 |
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