CN104529084B - A kind of anaerobic in low temperature treatment unit of trade effluent and treatment process thereof - Google Patents
A kind of anaerobic in low temperature treatment unit of trade effluent and treatment process thereof Download PDFInfo
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- CN104529084B CN104529084B CN201410853862.9A CN201410853862A CN104529084B CN 104529084 B CN104529084 B CN 104529084B CN 201410853862 A CN201410853862 A CN 201410853862A CN 104529084 B CN104529084 B CN 104529084B
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
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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
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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
- C02F2101/301—Detergents, surfactants
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/002—Grey water, e.g. from clothes washers, showers or dishwashers
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/30—Nature of the water, waste water, sewage or sludge to be treated from the textile industry
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
- C02F2103/343—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the pharmaceutical industry, e.g. containing antibiotics
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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
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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Abstract
The present invention relates to a kind of anaerobic in low temperature treatment unit and treatment process thereof of trade effluent, the trade effluent kind being applicable to process comprises chemosynthesis class pharmacy waste water, fine chemistry industry factory effluent, textile waste, washing industry waste water, lurgi gasifier processing wastewater, the inlet COD concentration being applicable to process is less than 10000mg/L, TDS is less than 6000mg/L, wastewater temperature is not less than 15 degrees Celsius, and the present invention mainly comprises: anaerobic in low temperature hydrolysis unit, return of waste water system.Traditional anaerobic reactor needs to maintain to run in stable temperature range.The present invention is directed to typical industry anaerobic waste water system to be difficult to reach stable high-level efficiency, the realistic situation that particularly in temperature fast drop course, efficiency obviously declines, by arranging anaerobic in low temperature hydrolysis unit, reach the object reducing waste water Heating temperature, maintain highly effective reaction efficiency.Treatment technology provided by the invention is efficient, simple to operate, strong adaptability, is the trade effluent anaerobic in low temperature technology possessing development potentiality.
Description
Technical field
The invention belongs to field of waste water treatment, particularly relate to anaerobic processing device and the treatment process thereof of trade effluent.
Background technology
Along with the development of national economy, State-level increases day by day to the degree of depth of environmental improvement and measure, under the prerequisite of effective Control the Plan Pollution Sources, strengthens input and the construction speed of sewage plant, achieve the situation that source, pollution face, cities and towns controls and sewage network spreads all over, contain the generation of massive pollution.
Anaerobic treatment is the recovery energy, reduces aerobic load important channel.Along with the lifting of manpower, electric power, steam expense, anaerobic pretreatment is the important channel of reducing pollution treatment enterprise operation expense, promoting processing efficiency.
Current, conventional anaerobic treatment process comprises: acidification hydrolization, product acid, methane phase three main phase.In fields such as beverage/foods, anaerobism often can realize producing a large amount of methane gass, thus realizes the object of resource utilization.In fine chemistry industry, the pharmacy of synthesis class, Lurgi coal gasification field, because there is a large amount of material (organism comprise persistence toxicant, inorganics comprise vitriol, nitrate etc.) microorganism to inhibition in system, thus system suppressed at acidification hydrolization and produce two stages of acid, methane production is relatively less.In this process, improving wastewater biodegradability, reduce wastewater toxicity, cutting down organic content in waste water is the main purpose of anaerobic treatment.
At present, the principal mode of anaerobic reactor comprises USAB (ascending manner mud fluidized-bed), EGSB (external circular anaerobic processes), IC (Paques B. V.'s internal-circulation anaerobic reactor), and different sorts anaerobic reactor plays active effect in every field.High-level efficiency is represented especially in industries such as papermaking, beer, cassava alcohols.Then, above-mentioned anaerobic reactor be mainly adapted at the higher organic waste water of B/C, operating temperature need control 34 ~ 37 degree mesophilic range, pH needs control within the scope of the methanogen adaptive value of 7 ~ 7.5.For, B/C high with wastewater toxicity than low trade effluent, it if desired maintains stable temperature and pH value, must cause complicacy operations a large amount of in on-the-spot operational process.
In the trade effluent of high toxicity, low B/C ratio, when methane phase is non-principal pre-treatment object, reduce additional steam, the temperature tolerance of lifting waste water becomes major consideration.
Chinese invention patent 2201410454215 discloses a kind of anaerobic methane production Anammox combination treatment soy protein wastewater device and method, and it adopts three-step approach, i.e. sludge seeding, unloading phase, the continuously measure such as operation, realize the high-level efficiency of anaerobic treatment.Practical problems is that anaerobic ammonium oxidation process is difficult to realize at short notice, and need the time that debugging 1 year is even longer, whole design is only the application process of anaerobic reactor.
Chinese invention patent 201410311505 discloses a kind of cassava alcohol waste water full wine with dregs thermophilic fermentation tank water charging system, it is arranged at the umbrella water trap of fermenter base, water distributor divides two-layer, outer field water distributor adopts 316L stainless steel outer cloth water pipe on fermentor tank liquid level, carbon steel weldless steel tube is adopted below liquid level, outer and internal layer is middle utilizes mash to form nature water seal, guarantee does not have biogas to leak, and the water distribution branch pipe of internal layer is by Flange joint water distributor be arranged at outside fermentor tank.Cassava alcohol industry anaerobic reactor comparative maturity is only change the removal efficiency that the pattern of water distribution does not have raising system, and thermal equilibrium (biogas produces between heat and energy consumption) is difficult to carry out simultaneously.
Chinese invention patent 201410213250 discloses the method for a kind of anaerobic-aerobic-microbial flocculation intensive treatment waste water, first waste water add PAC (flocculation agent), then anaerobic reactor, aerobic reactor is entered, secondary clarifier effluent add 7.5% microbial flocculant and volumetric concentration be the calcium chloride solution of 5%, be the high-performance ceramic filtrate of 3 ~ 5mm and the quartz sand layer be laid on bottom it by particle diameter after mixing 8 ~ 10min, water outlet enters attapulgite adsorption tank decoloring reaction.This is a technical process of Nanjing University's exploitation, lacks necessary consideration to anaerobic system, is only coagulating sedimentation pre-treatment and end to be added the filtration and attapulgite decolouring pond that are similar to tiny flocculation system.This technique lacks detailed description to the trade effluent be applicable to.
Chinese invention patent CN201410196037 discloses a kind of high efficiency anaerobic reactor for the waste water secondary anaerobic process of dyestuff Yichuan, its core is divided into four regions, be complete mixing zone respectively, the first race way, the second inner circulation zone and solid-liquid separation go, described complete mixing zone is arranged from the bottom to top.Its invention easily runs mud by triphase separator for system sludge, be provided with two cover triphase separators, this set can not improve the separation performance (separation performance depends primarily on the character of upflow velocity and mud) of mud, is difficult to meet the anaerobic treatment efficiency in industrial wastewater system and separation requirement.
Chinese invention patent CN201420160931 discloses a kind of organic waste water anaerobic processing device, realize processing hero efficiently by water distribution system, Separate System of Water-jet, internal recycling system and external circulating system, then said system still maintains anaerobic pond and maintains necessary temperature and initial pH.
Chinese invention patent CN201410110936 discloses a kind of high concentration hard-degraded organic waste water modularization step internal circulating anaerobic decomposition apparatus, its invention provides the modular treatment system of a kind of high concentration hard-degraded organic waste water, each anaerobic reaction room is equipped with thruster and downtake, one Room connects a Room, each room bacterium colony is different, thus forms efficient degradation process.Microorganism is in biochemical degradation process, and microbial metabolites existence can affect the water quality of water outlet and follow-up microbic resolvability, and then this anaerobic system does not consider the efficient backflow problem of temperature needed for microorganism and system.
In sum, system for anaerobic treatment needs to maintain higher temperature of reaction, instantly the patent of a series of anaerobic reactor is only the suitable optimization to the aspect such as water distribution system, stirring system, lack whole system kinetics and thermodynamic (al) concern, particularly need to maintain the high-level efficiency that certain temperature just can maintain anaerobism.
The high temperature of maintenance more than 30 degree is needed to react for solving current anaerobic reactor, a kind of economy of urgent need proposition, the anaerobic in low temperature waste water treatment process that feasible, processing efficiency is high.
Summary of the invention
For solving the problem that anaerobism clearance is low, anaerobic reaction needs to maintain more than 30 degree high temperature of current fine chemistry industry, the pharmacy of chemosynthesis class, the existence of lurgi gasifier trade effluent, the present invention proposes a kind of anaerobic in low temperature treatment unit and treatment process thereof of trade effluent.
The present invention is achieved by following technical scheme:
A kind of anaerobic in low temperature treatment unit of trade effluent, comprise the equalizing tank, anaerobic in low temperature hydrolysis unit and the aftertreatment systems that connect successively, perforation stirring pipe is provided with bottom described anaerobic in low temperature hydrolysis unit, filler in described anaerobic in low temperature hydrolysis unit is divided into some modules by the some anti-short stream plate that anaerobic in low temperature hydrolysis unit is arranged perpendicular to bottom, the inlet ductwork of described anaerobic in low temperature hydrolysis unit is provided with a water inlet magnetic flow meter, export pipeline is provided with backflow magnetic flow meter, is also provided with an online thermometer; Described anaerobic in low temperature hydrolysis unit also connects one containing the waste treatment device discarding blower fan, described perforation stirring pipe Aeration fan aeration.
As preferred technical scheme:
Anaerobic in low temperature treatment unit of the present invention, is provided with vacuum breaker between described anaerobic in low temperature hydrolysis unit and aftertreatment systems.
The present invention also proposes the treatment process realized by above anaerobic in low temperature treatment unit, the filler that described anaerobic in low temperature hydrolysis unit adopts is polyoxyethylene glycol-formal fiber, be divided into some monolithic silks and be fixedly connected in ring plate with nylon rope, in each module, ring plate vertical spacing is 60 ~ 80mm, horizontal ring plate between centers is 150 ~ 200mm, monolithic silk is of a size of 8cm, monolithic silk dry weight 2 ~ 3g/ sheet.
As preferred technical scheme:
Treatment process of the present invention, the waste water of described process is chemosynthesis class pharmacy waste water, fine chemistry industry factory effluent, textile waste, washing industry waste water, lurgi gasifier processing wastewater.
Treatment process of the present invention, the waste water COD concentration of described process is less than 10000mg/L, and TDS is less than 6000mg/L, and temperature is higher than 15 degrees Celsius.
Treatment process of the present invention, use the online thermometer of described water inlet to arrange reflux ratio, control of reflux ratio is between 50 ~ 400%.
Treatment process of the present invention, the waste water of described process enters described anaerobic in low temperature hydrolysis unit and supplements ammonia nitrogen and phosphoric acid salt, COD, mass ratio between ammonia nitrogen and phosphoric acid salt are 200:4:1 ~ 200:8:1, and ammonia nitrogen adopts urea, and phosphoric acid salt adopts potassium primary phosphate or dipotassium hydrogen phosphate.
Treatment process of the present invention, according to the residence time of described treatment unit process waste water, module installation is 6 ~ 9 hours/, arranges 2 ~ 4 according to the concentration 1000mg/L of COD.
Owing to adopting above technical scheme, the present invention has following beneficial effect:
(1) when temperature is higher than 15 degrees Celsius, efficient reaction efficiency can be maintained;
(2) automatic instrument(s) is set, the operation conditions of rapid adjustment System;
(3) the hydroformylation filler adopted is polyoxyethylene glycol-formal series, and relative to elastic filler, efficiency is high, biofilm is effective, forms stable anaerobism, double oxygen, aerobic bacteria micelle layer.
(4) several reaction modules is set for anaerobic reaction, thus realizes the anaerobic reaction process of different gradient.
The present invention is when inlet COD concentration is less than 10000mg/L, and system can steady running by reflux ratio design.When influent concentration is less than 4000mg/L, often clearance can higher than 80%.The present invention does not produce secondary pollution, does not also allow pollutent shift, and when temperature is higher than 15 degrees Celsius, has efficient processing efficiency.Compared with prior art, the present invention can maintain efficient processing efficiency at inflow temperature higher than when 15 degrees Celsius, meanwhile, the thermodynamics and kinetics factor of anaerobic system reaction in the wastewater purification that the present invention takes into full account, decreases management and the running cost of owner.
Accompanying drawing explanation
Fig. 1 is the anaerobic in low temperature treatment unit structural representation of a kind of trade effluent of the present invention.
In figure:
1-equalizing tank, 2-lift pump, 3-anaerobic in low temperature hydrolysis unit, 4-water inlet magnetic flow meter
5-polyoxyethylene glycol-formal filler, 6-anti-short stream plate 7-perforation stirring pipe, 8-Aeration fan, 9-vacuum breaker
10-reflux pump, 11-emission-control equipment, 12-exhaust gas fan, 13-backflow magnetic flow meter
14-aftertreatment systems, 15-online thermometer
Embodiment
The present invention is further illustrated below in conjunction with accompanying drawing:
The anaerobic in low temperature treatment unit of a kind of trade effluent of the present invention, comprise the equalizing tank 1 connected successively, anaerobic in low temperature hydrolysis unit and 3 aftertreatment systems 14, perforation stirring pipe 7 is provided with bottom anaerobic in low temperature hydrolysis unit 3, filler in anaerobic in low temperature hydrolysis unit 3 is divided into some modules by the some anti-short stream plate 6 that anaerobic in low temperature hydrolysis unit 3 is arranged perpendicular to bottom, according to the residence time for the treatment of unit process waste water, module installation is 6 ~ 9 hours/, 2 ~ 4 are arranged according to the concentration 1000mg/L of COD, the inlet ductwork of anaerobic in low temperature hydrolysis unit 3 is provided with a water inlet magnetic flow meter 4, export pipeline is provided with backflow magnetic flow meter 13, also be provided with an online thermometer 15, anaerobic in low temperature hydrolysis unit 3 also connects one containing the waste treatment device 11 discarding blower fan 12, perforation stirring pipe 7 Aeration fan 8 aeration.
The waste water of process of the present invention is chemosynthesis class pharmacy waste water, fine chemistry industry factory effluent, textile waste, washing industry waste water, lurgi gasifier processing wastewater; The waste water COD concentration of described process is less than 10000mg/L, and TDS is less than 6000mg/L, and temperature is higher than 15 degrees Celsius.
The bioprocess that the variable effect of module temperature is all, wastewater treatment relates to three temperature ranges: temperature from the mesophilic range of 4 ~ 39 degree, from the high temperature ranges of 39 degree to the highest 55 degree, operating temperature lower than the low temperature range of 4 degree.In view of the feature of this waste water, the aerobe reaction process of system design is all run in mesophilic range.
For most of aerobic wastewater treatment system, biological reactions rates improves with the rising of temperature, reaches maximum at about 31 degree, temperature more than 39 degree after, speed of reaction will reduce greatly.
In the temperature range of 4 ~ 31 degrees Celsius,
Kt=K
20θ
t-20(formula 1)
For above-mentioned trade effluent, temperature factor θ is in the scope of 1.03 ~ 1.1, when temperature value is less than 15 degrees Celsius, get K=1.07 (during mean value), speed of reaction when 15 degree is about when 25 degree 50%, the present invention is set to the critical temperature run by 15 degree, temperature is heated lower than needing when 15 degree.
By the waste water water temperature of inlet system, realize the setting carrying out reflux ratio according to formula 1, reduce the organism melting concn of water inlet, allow microorganism in anaerobic reactor be in the efficient growth pattern of Exponential growth stage all the time.
Trade effluent is after in equalizing tank 1, abundant homogeneous is all measured, anaerobic in low temperature hydrolysis unit 3 is entered by lift pump 2, now supplement ammonia nitrogen and phosphoric acid salt, COD, mass ratio between ammonia nitrogen and phosphoric acid salt are 200:4:1 ~ 200:8:1, ammonia nitrogen adopts urea, and phosphoric acid salt adopts potassium primary phosphate or dipotassium hydrogen phosphate, the microorganism of polyoxyethylene glycol formal filler 5 surface attachment in anaerobic in low temperature hydrolysis unit 3 is utilized to carry out anaerobic hydrolysis to trade effluent, polyoxyethylene glycol formal filler is divided into some monolithic silks and is fixedly connected in ring plate with nylon rope, in each module, ring plate vertical spacing is 60 ~ 80mm, horizontal ring plate between centers is 150 ~ 200mm, monolithic silk is of a size of 8cm, monolithic silk dry weight 2 ~ 3g/ sheet, perforation stirring pipe 7 is furnished with bottom anaerobic in low temperature hydrolysis unit 3, its Main Function realizes mixing completely of nutritive medium and microorganism at limber up period, in full film anaerobic hydrolysis unit 3, there is anti-short stream plate 6 simultaneously, lattice is carried out according to the residence time, thus reduce anaerobic reactor microbial metabolites to the impact of system efficiency.Anaerobic in low temperature hydrolysis unit 3 is provided with online thermometer 15, according to the speed of reaction under differing temps in above-mentioned formula 1, realize the reflux ratio of water inlet magnetic flow meter 4 and backflow magnetic flow meter 13, control of reflux ratio is between 50 ~ 400%, guarantee that system is in the microorganisms grow the fastest stage, anaerobic in low temperature Operation system setting emission-control equipment 11 simultaneously, exhaust gas fan 12 is utilized to carry out deodorizing process, simultaneity factor adopts exhaust-gas treatment facilities 11 to be conducive to insulation, thus system can both steady running more than 15 degree.The nutritive salt that Aeration fan 8 is mainly used in anaerobism biofilm process stirs, and vacuum breaker 9 mainly prevents waste water from flowing backwards.
Embodiment 1
There are the novel green series product of market outlook certain chemical inc with alkyl glycoside (APG) series non-ionic surfactants, alcohol ether carboxylate (AEC) series anionic surfactant, tetrahydroglyoxaline Series Amphoteric Surfactant etc., its surface active agent wastewater output is 100 ton per days, inlet COD concentration is 3000 ~ 6000mg/L, by anaerobic in low temperature hydrolysis unit (residence time 36h) water outlet COD clearance up to 80%, anaerobic system load can reach 4kgCOD/ (m3d).At extreme influent concentration at COD=20000mg/L, water outlet COD is less than 6000mg/L, and clearance higher than 70%, thus embodies high processing efficiency.Total system annual temperature is not heated, and temperature is 30 degrees Celsius time, and clearance is higher than 80%; Temperature at 15 ~ 20 degrees Celsius time, clearance is still higher than 70%.
Embodiment 2
Certain the comprehensive emulsion of Mei Zi Electric Applicance Co., Ltd and remover waste water, adopt this anaerobic in low temperature hydrolysis unit, when influent concentration 3000 ~ 4000mg/L, inflow temperature is when 15 ~ 25 degrees Celsius of changes, anaerobic unit clearance has 0.2 to be promoted to 0.35 higher than 75%, BOD/COD.
Embodiment 3
Certain textile printing and dyeing enterprises produces a large amount of stamp and dyeing waste water, the waste water water yield is 200 ton per days, adopt anaerobic in low temperature hydrolysis unit, be 1500 ~ 2000mg/L at influent concentration, when colourity is 400 ~ 600 times, during anaerobism load employing 3kgCOD/ (m3d), annual 365 days temperature are 15 ~ 32 degrees Celsius time, water outlet COD clearance is 30%, and chroma removal rate is promoted to more than 0.4 up to more than 90%, BOD/COD by 0.18
But above-mentioned embodiment is exemplary, being to better enable those skilled in the art understand this patent, can not being interpreted as it is restriction this patent being comprised to scope; As long as according to this patent disclose any equivalent change done or the modification of spirit, all fall into the scope that this patent comprises.
Claims (8)
1. the anaerobic in low temperature treatment unit of a trade effluent, comprise the equalizing tank, anaerobic in low temperature hydrolysis unit and the aftertreatment systems that connect successively, it is characterized in that: bottom described anaerobic in low temperature hydrolysis unit, be provided with perforation stirring pipe, filler in described anaerobic in low temperature hydrolysis unit is divided into some modules by the some anti-short stream plate that anaerobic in low temperature hydrolysis unit is arranged perpendicular to bottom, the inlet ductwork of described anaerobic in low temperature hydrolysis unit is provided with a water inlet magnetic flow meter, export pipeline is provided with backflow magnetic flow meter, is also provided with an online thermometer; Described anaerobic in low temperature hydrolysis unit also connects one containing the waste treatment device discarding blower fan, described perforation stirring pipe Aeration fan aeration; The filler that described anaerobic in low temperature hydrolysis unit adopts is polyoxyethylene glycol-formal fiber, be divided into some monolithic silks and be fixedly connected in ring plate with nylon rope, in each module, ring plate vertical spacing is 60 ~ 80mm, horizontal ring plate between centers is 150 ~ 200mm, monolithic silk is of a size of 8cm, monolithic silk dry weight 2 ~ 3g/ sheet.
2. anaerobic in low temperature treatment unit according to claim 1, is characterized in that: be provided with vacuum breaker between anaerobic in low temperature hydrolysis unit and aftertreatment systems.
3. the treatment process realized by anaerobic in low temperature treatment unit according to claim 1.
4. treatment process according to claim 3, is characterized in that: the waste water of described process is chemosynthesis class pharmacy waste water, fine chemistry industry factory effluent, textile waste, washing industry waste water, lurgi gasifier processing wastewater.
5. treatment process according to claim 3, is characterized in that: the waste water COD concentration of described process is less than 10000mg/L, and TDS is less than 6000mg/L, and temperature is higher than 15 degrees Celsius.
6. treatment process according to claim 3, is characterized in that: use the online thermometer of described water inlet to arrange reflux ratio, control of reflux ratio is between 50 ~ 400%.
7. treatment process according to claim 5, it is characterized in that: the waste water of described process enters described anaerobic in low temperature hydrolysis unit and supplements ammonia nitrogen and phosphoric acid salt, COD, mass ratio between ammonia nitrogen and phosphoric acid salt are 200:4:1 ~ 200:8:1, ammonia nitrogen adopts urea, and phosphoric acid salt adopts potassium primary phosphate or dipotassium hydrogen phosphate.
8. the treatment process according to any one of above claim 3-7, is characterized in that: according to the residence time of described treatment unit process waste water, and module installation is 6 ~ 9 hours/modules, arranges 2 ~ 4 modules according to the concentration 1000mg/L of COD.
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| JP2009254970A (en) * | 2008-04-16 | 2009-11-05 | Ihi Corp | System and method for treating starch production wastewater |
| CN101693580A (en) * | 2009-10-16 | 2010-04-14 | 同济大学 | Efficient compound biological treatment device |
| CN104031825A (en) * | 2013-03-07 | 2014-09-10 | 西北民族大学 | Low-temperature anaerobic biogas fermentation tank |
| CN204385030U (en) * | 2014-12-31 | 2015-06-10 | 上海明诺环境科技有限公司 | A kind of anaerobic in low temperature treatment unit of trade effluent |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009254970A (en) * | 2008-04-16 | 2009-11-05 | Ihi Corp | System and method for treating starch production wastewater |
| CN101693580A (en) * | 2009-10-16 | 2010-04-14 | 同济大学 | Efficient compound biological treatment device |
| CN104031825A (en) * | 2013-03-07 | 2014-09-10 | 西北民族大学 | Low-temperature anaerobic biogas fermentation tank |
| CN204385030U (en) * | 2014-12-31 | 2015-06-10 | 上海明诺环境科技有限公司 | A kind of anaerobic in low temperature treatment unit of trade effluent |
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