CN102730914B - Method for processing livestock breeding wastewater by using anoxic membrane bioreactor - Google Patents
Method for processing livestock breeding wastewater by using anoxic membrane bioreactor Download PDFInfo
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- CN102730914B CN102730914B CN201210240178.4A CN201210240178A CN102730914B CN 102730914 B CN102730914 B CN 102730914B CN 201210240178 A CN201210240178 A CN 201210240178A CN 102730914 B CN102730914 B CN 102730914B
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Abstract
The invention discloses a method for processing livestock breeding wastewater by using an anoxic membrane bioreactor. The method comprises the following steps: after preprocessing the livestock breeding wastewater, regulating the water quality and the water volume of the wastewater in a regulating tank, and then allowing the wastewater to enter the anoxic membrane bioreactor, wherein the concentration of active sludge in a reaction zone is 15,000-20,000mg/L, the middle lower part of the membrane zone is an aerobic zone, the dissolved oxygen is kept to be 2-5mg/L, the other zone of the membrane zone is anoxic or anaerobic environment, and the concentration of the dissolved oxygen is lower than 0.5mg/L; and enabling the wastewater in the reactor to continuously and alternately pass the aerobic zone, the anoxic zone and the anaerobic zone, continuously performing the biodegradation and transformation of pollutants, thereby realizing anaerobic ammoxidation denitrification in the same reactor. The whole reactor can achieve near zero emission of organic excess sludge, and the water quality of discharged water can reach the standard for recycling.
Description
Technical field
The present invention relates to a kind for the treatment of process of livestock breeding wastewater, especially relate to a kind of method of utilizing facultative aerobic membrane bioreactor to process livestock breeding wastewater.
Background technology
Livestock breeding wastewater suspended substance is many, ammonia nitrogen concentration is high, organic concentration is high, stink is large, but also contains the characteristics such as pathogenic agent that excrete with livestock and poultry, and intractability is difficult to qualified discharge greatly and after traditional technology processing.
Breeding wastewater adopts the biological treatments such as natural biology treatment technology, Anaerobic Methods in Treating, aerobic treatment technology, combination treatment technology at present mostly.For single aerobic, anaerobic treatment effect is unsatisfactory, plant's waste water generally adopts anaerobism+aerobic biochemical combination treatment technology at present.
Conventional Anaerobic Methods in Treating has: UASB, AF, UBF, USR, two phase anaerobic method;
Conventional aerobic treatment technology has: active sludge, biological filter, catalytic oxidation, SBR, blodisc;
Conventional advanced treatment technology: oxidation pond, artificial swamp, soil sanitation.
Fig. 1 is shown in the technical process of tradition anaerobism+aerobic biochemical combination treatment.
Membrane bioreactor is the new type water treatment technology that high performance membrane isolation technique combines with active sludge, the tool potentiality of generally acknowledging as 21 century and the environmental improvement technology of competitive power, become at present in the desirable technique processed of water reuse field and high concentrated organic wastewater.Yet traditional aerobic membrane bioreactor Process on Ammonia Nitrogen treatment effect is unsatisfactory, and energy consumption is high, is difficult to realize discharged wastewater met the national standard.
Summary of the invention
The object of this invention is to provide a kind of method of utilizing facultative aerobic membrane bioreactor to process livestock breeding wastewater, overcome existing routine biochemistry treatment process and general membrane biological reactor process treatment effect is not good, energy consumption is high, and sludge creation amount is large, floor space is large, invests high defect.
Technical scheme of the present invention, a kind of method of utilizing facultative aerobic membrane bioreactor to process livestock breeding wastewater, comprises the following steps:
1. livestock breeding wastewater is first through aerobic or anaerobic technique pre-treatment;
2. water outlet after pretreatment enters the equalizing tank regulating water quality water yield;
3. water quality and quantity regulates rear sewage to enter facultative aerobic membrane bioreactor.
In step 3, by optimizing aerating system intensity distribution, middle and lower part, facultative aerobic membrane bioreactor film district is aerobic zone particularly, and dissolved oxygen remains on 2-5mg/L; Region beyond middle and lower part, facultative aerobic membrane bioreactor film district is oxygen or the anaerobic environment of holding concurrently, and dissolved oxygen concentration is lower than 0.5mg/L.
In whole system, form the flow location form that is alternately distributed of the aerobic-oxygen-anaerobism of holding concurrently, waste water in facultative aerobic membrane bioreactor can be continuously alternately through the aerobic-oxygen-anaerobic zone of holding concurrently, constantly carry out the Biodegradation and biotransformation of pollutent, principal pollutant (organic loading, ammonia nitrogen and the SS) degraded that strengthened.
Particularly in step 3, crown_interception due to film, in reaction zone, form the active sludge of high density, facultative aerobic membrane bioreactor system activity sludge concentration 15000-20000mg/L, facultative aerobic membrane bioreactor hydraulic detention time is 8-10 hour, mud is in low organic loading running status, and whole facultative aerobic membrane bioreactor can be realized organic excess sludge near zero release.
In step 3, in reactor, form and take amphimicrobe as main particularly, the aerobic bacterium phase morphology coexisting with amphimicrobe is realized Anammox denitrogenation in same facultative aerobic membrane bioreactor.
The present invention is mainly usingd facultative aerobic membrane bioreactor as the main process of processing breeding wastewater, solve the problem that is difficult to qualified discharge after livestock breeding wastewater is processed, simplified technical process simultaneously, reduced construction investment and floor space, improved treatment effect, maintenance of the equipment is simple; Effluent quality can reach < < urban sewage reutilization city miscellaneous water water quality > > (GB/T18920-2002) road-cleaning, fire-fighting, the reuse of greening water water quality standard.
Accompanying drawing explanation
Fig. 1 tradition anaerobism+aerobic biochemical combination treatment process flow sheet.
Fig. 2 process flow diagram of the present invention.
Fig. 3 facultative aerobic membrane bioreactor inside is aerobic-oxygen-anaerobism of holding concurrently be alternately distributed flow location form figure.
Embodiment
Embodiment 1
Treatment scale: 100m
3/ d; Adopt treatment process of the present invention: " pre-treatment (A/O pond)+equalizing tank+facultative aerobic membrane bioreactor ".Livestock breeding wastewater first after pretreatment, enter the equalizing tank regulating water quality water yield, after water quality and quantity regulates, sewage enters facultative aerobic membrane bioreactor, crown_interception due to film, in reaction zone, form the active sludge of high density, concentration is controlled at 15000-20000mg/L, and the reactor waterpower residence time is 10 hours.In facultative aerobic membrane bioreactor, by optimizing aerating system intensity distribution, middle and lower part, film district is aerobic zone, and dissolved oxygen remains on 2-5mg/L; Region beyond middle and lower part, film district is oxygen or the anaerobic environment of holding concurrently, and dissolved oxygen concentration, lower than 0.5mg/L, is answered in device and formed and take amphimicrobe as main, the aerobic bacterium phase morphology coexisting with amphimicrobe.Waste water in reactor alternately through the aerobic-oxygen-anaerobic zone of holding concurrently, constantly carries out the Biodegradation and biotransformation of pollutent continuously, and principal pollutant (organic loading, ammonia nitrogen and the SS) degraded that strengthened realizes Anammox denitrogenation in same reactor.Whole reactor can be realized organic excess sludge near zero release, and effluent quality can reach < < urban sewage reutilization city miscellaneous water water quality > > (GB/T18920-2002) road-cleaning, fire-fighting, the reuse of greening water water quality standard.
table 1 is respectively controlled project discharge value and discharge index comparison sheet
Claims (3)
1. facultative aerobic membrane bioreactor is processed a method for livestock breeding wastewater, it is characterized in that comprising the following steps:
(1) livestock breeding wastewater is first through aerobic or anaerobic technique pre-treatment;
(2) water outlet after pretreatment enters the equalizing tank regulating water quality water yield;
(3) water quality and quantity regulates rear sewage to enter facultative aerobic membrane bioreactor, water outlet;
In step (3), middle and lower part, facultative aerobic membrane bioreactor film district is aerobic zone, and dissolved oxygen remains on 2-5mg/L; Region beyond middle and lower part, facultative aerobic membrane bioreactor film district is oxygen or the anaerobic environment of holding concurrently, and dissolved oxygen concentration is lower than 0.5mg/L.
2. method according to claim 1, is characterized in that: facultative aerobic membrane bioreactor system activity sludge concentration 15000-20000mg/L, facultative aerobic membrane bioreactor hydraulic detention time is 8-10 hour.
3. method according to claim 1, is characterized in that: in facultative aerobic membrane bioreactor, form and take amphimicrobe as main, the aerobic bacterium phase morphology coexisting with amphimicrobe.
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| CN103864211A (en) * | 2014-02-26 | 2014-06-18 | 上海大学 | Method for processing food processing wastewater by adopting facultative membrane bioreactor and facultative membrane bioreactor |
| CN103803706B (en) * | 2014-03-04 | 2016-01-27 | 重庆耐德机械设备有限公司 | A kind of based on membrane bioreactor sewage water treatment method |
| CN104326561B (en) * | 2014-11-18 | 2016-04-20 | 华中农业大学 | A kind of multistage microbial augmentation improves the method for livestock breeding wastewater processing efficiency |
| CN104528934B (en) * | 2014-12-04 | 2016-04-27 | 浙江清华长三角研究院 | Short-cut nitrification-denitrification denitrogenation membrane bioreactor and sewage treatment process thereof |
| CN105036328A (en) * | 2015-04-20 | 2015-11-11 | 江西金达莱环保股份有限公司 | Village decentralized wastewater treatment method |
| CN104829043A (en) * | 2015-04-20 | 2015-08-12 | 江西金达莱环保股份有限公司 | Method for treatment of foodstuff wastewater based on technology of facultative anaerobic membrane bioreactor |
| CN105923748A (en) * | 2015-09-01 | 2016-09-07 | 江西金达莱环保股份有限公司 | Sewage treatment method and system of mud zero release |
| CN105948246A (en) * | 2015-09-01 | 2016-09-21 | 江西金达莱环保股份有限公司 | Non-zoned membrane biological sewage treatment method and non-zoned membrane biological sewage treatment system |
| CN106554075A (en) * | 2015-09-24 | 2017-04-05 | 北京联合创业环保工程股份有限公司 | Micro- aerobic recirculating fluidized bed membrane bioreactor and system |
| CN108911135B (en) * | 2018-07-17 | 2021-06-11 | 厦门理工学院 | Treatment method of livestock and poultry wastewater |
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| CN101148302A (en) * | 2006-09-18 | 2008-03-26 | 深圳市金达莱环保股份有限公司 | Method for treating waste water of livestock and fowl cultivation |
| CN101885570B (en) * | 2009-05-15 | 2012-04-04 | 江西金达莱环保研发中心有限公司 | Sludge treatment method |
| CN101885537B (en) * | 2009-05-15 | 2011-12-07 | 江西金达莱环保研发中心有限公司 | Process for treating sewage with low sludge content |
| CN101817615A (en) * | 2010-03-15 | 2010-09-01 | 南昌大学 | Anaerobic-sequencing batch biofilm reactor-artificial wetland method for treating piggery wastewater |
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