CN102101722B - Novel membrane bioreactor for treating pig farm wastewater - Google Patents
Novel membrane bioreactor for treating pig farm wastewater Download PDFInfo
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- CN102101722B CN102101722B CN 201110052787 CN201110052787A CN102101722B CN 102101722 B CN102101722 B CN 102101722B CN 201110052787 CN201110052787 CN 201110052787 CN 201110052787 A CN201110052787 A CN 201110052787A CN 102101722 B CN102101722 B CN 102101722B
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Abstract
The invention relates to a novel membrane bioreactor for treating pig farm wastewater, which comprises a water distributing tank, a water inlet and outlet pump, a liquid level meter, a flowmeter, a carbon fiber padding, a hollow fiber membrane assembly, an air flowmeter, a PLC (Programmable Logic Controller) system and an aerating head, wherein the carbon fiber padding is fixed in a reactor; the running of the whole reactor is automatically controlled by the PLC system; and when being used for treating pig farm wastewater, the reactor has good decontamination denitrogenating effect and no secondary pollution.
Description
Technical field
The present invention is the treatment facility that relates to digested piggery wastewater.
Background technology
Livestock breeding wastewater, particularly large scale of pig farm waste water has become the primary pollution source in the many areas of China.The pig farm of most adopts solid-liquid separation-anaerobic-aerobic to process excrement and urine water.Membrane bioreactor (MBR) is as a kind of novel and efficient water technology, and it has stable effluent quality, surplus sludge volume is few, capacity of resisting impact load is strong, be easy to automatic operation and take up an area the advantages such as few.MBR has obtained certain application as the aerobic treatment reactor of digested piggery wastewater in the laboratory, be not very high but the problem that exists is MBR to the clearance of total nitrogen.
Summary of the invention
There is the shortcoming that sludge concentration is low, the total nitrogen removal effect is relatively poor when the objective of the invention is directly to process the pig farm anaerobic digestion solution for membrane bioreactor, a kind of composite film reactor of processing piggery wastewater is provided.Breeding wastewater is after treatment, and its waste discharge can reach GB18596-2001 " livestock and poultry breeding industry pollutant emission standard ".
The present invention is achieved by the following technical solutions:
The present invention adds carbon fiber bar as carrier filler in the MBR reactor, adopt the carbon fiber bar carrier filler with microbial immobilized cultivation, reaches the special process requirements such as denitrogenation, dephosphorization and degradation of organic substances.The intervention of biofilm packing can excite microbic activity, thereby promotes degraded and the conversion of organic pollutants, nitrogen phosphorus substance etc.On a section of " microbial film ", by outer and inner aerobic, amphimicrobian and three kinds of reaction zones of anaerobism of having formed.At aerobic zone, aerobic bacteria is nitrate with mineralized nitrogen, and small organic molecule is converted into carbonic acid gas and water (soluble inorganic phosphorus is converted into ATP in the cell paste), at anaerobic zone, anerobe is converted into nitrogen and oxygen (larger molecular organics that difficulty is decomposed is decomposed into degradable small organic molecule) with nitrate.Final pollution group just is decomposed and changes into the N of effusion water body
2, CO
2And H
2O.Therefore the adding of carbon fiber bar filler more is conducive to the removal of total nitrogen.
This reactor mainly is comprised of following component: distribution reservoir, intake pump, under meter, aeration head, carbon fiber bar filler, hollow fiber film assembly, go out water pump, pneumatic pump, self-acting valve, PLC housing.
Described carbon fiber bar filler can be the PAN series fiber of being made by the polyacrylic acid macrofiber, and the 12000 threads set by 7 microns of diameters through the sizing process special processing forms, in case putting into water just can scatter rapidly, adding it has trickle concaveconvex structure on surface separately, can form huge surface-area.
Each components and parts of this reactor connect like this:
Distribution reservoir (1), intake pump (2), under meter (4) connect successively, link to each other with reactor (5) by water distribution pipe, contact with carbon fiber bar filler (7), aerial fiber film component (8) and be connected water pump (10) connection, aeration head (6) is arranged on the bottom of reactor, pneumatic pump (14) is connected with air flowmeter (9), and liquidometer (3) places the right top of reactor, and shore pipe (13) is arranged on the bottom of reactor.
Beneficial effect of the present invention is:
(1) the present invention is the improvement of MBR, and the operating process when it processes waste water is continuous water-in and water-out.Microbial film is fixed on filling surface, has formed the stable ecosystem.Can perch the speed of growth is slow, generation time is long bacterium and higher microorganism, such as nitrifier, so the hybrid mbr method has higher denitrification ability.
(2) biomass is many, without excess sludge.In a single day carbon fiber bar is put into water and just can be scattered rapidly, and adding it has trickle concaveconvex structure on surface separately, can form huge surface-area, can adsorb a large amount of microorganisms, and namely microbial biomass is many.Simultaneously, because the apposition growth of microorganism, the microbial film water ratio is lower, and the biomass of reactor unit volume can be up to 5～20 times of activated sludge process, so this device processes effect is better.Perching the biology of more higher trophic level on the microbial film, its food chain is than the length among the MBR, and mud is trapped within inside reactor, has reduced the sludge disposal expense.
(3) the carbon fiber bar filler have environment zero load, non-secondary pollution, without species infringements, safety, the advantage such as quality is light, economic durable and effect is remarkable.
(4) can realize full automatic control to hybrid mbr, be convenient to best flow process is selected and debugged.
Description of drawings
Fig. 1 is section of structure of the present invention;
Fig. 2 is the carbon fiber bar filler.
Among Fig. 1: 1. distribution reservoir 2. intake pumps 3. liquidometers 4. under meters 5. reactors 6. micro porous aeration heads 7. carbon fiber bar fillers 8. hollow fiber film assemblies 9. air flowmeter 10. go out water pump 11.PLC Controlling System 12. self-acting valves 13. shore pipes 14. pneumatic pumps.
Embodiment
After this hybrid mbr was processed, effluent quality reached GB 18596-2001 " livestock and poultry breeding industry pollutant emission standard " requirement, COD 100～400 mg/L after the film water outlet, NH with certain pig farm anaerobic digestion solution
3-N 40～80mg/L TP 5～8mg/L.
Specific implementation process is as follows:
(1) piggery wastewater through holding back of mechanical grille, is removed macrobead pollution substance and floating matter in the sewage after the sewage collecting pipe network is collected, and waste water enters methane-generating pit.
(2) waste water flows into methane-generating pit, through efficient anaerobic digestion, after removing most COD acquisition biogas, through the settling tank regulating water quality water yield.
(3) regularly get anaerobic digestion solution as the water inlet of hybrid mbr, system operates to continuous flow, through hybrid mbr aerobic/the oxygen nitration denitrification of holding concurrently after, the pollutents such as COD, ammonia nitrogen and phosphorus of removal waste water that can be a large amount of.
Claims (1)
1. process the piggery wastewater membrane bioreactor, comprise distribution reservoir, turnover water pump, liquidometer, under meter, carbon fiber bar filler, hollow fiber film assembly, air flowmeter, PLC Controlling System, aeration head, pneumatic pump, it is characterized in that:
(1) in membrane bioreactor, adds and fixed carbon cellulose fiber filler;
(2) each components and parts of described reactor connect like this: distribution reservoir (1), intake pump (2), under meter (4) connect successively, link to each other with reactor (5) by water distribution pipe, contact with carbon fiber bar filler (7), hollow fiber film assembly (8) be connected water pump (10) and connect, aeration head (6) is arranged on the bottom of reactor, pneumatic pump (14) is connected with air flowmeter (9), and liquidometer (3) places the right top of reactor, and shore pipe (13) is arranged on the bottom of reactor;
(3) described carbon fiber bar filler is to be gathered by 12000 threads by 7 microns of diameters of polyacrylic acid macrofiber manufacturing to form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110052787 CN102101722B (en) | 2011-03-07 | 2011-03-07 | Novel membrane bioreactor for treating pig farm wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110052787 CN102101722B (en) | 2011-03-07 | 2011-03-07 | Novel membrane bioreactor for treating pig farm wastewater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102101722A CN102101722A (en) | 2011-06-22 |
| CN102101722B true CN102101722B (en) | 2013-03-13 |
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ID=44154813
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110052787 Expired - Fee Related CN102101722B (en) | 2011-03-07 | 2011-03-07 | Novel membrane bioreactor for treating pig farm wastewater |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102267782B (en) * | 2011-07-01 | 2012-10-24 | 中国科学院生态环境研究中心 | Integrated reactor and method for removing ammonia nitrogen from drinking water |
| CN102951732A (en) * | 2011-08-31 | 2013-03-06 | 天津滨海鼎昇环保科技工程有限公司 | Process for biologically treating high-concentration sewage by carbon fiber membrane |
| CN103183447A (en) * | 2011-12-29 | 2013-07-03 | 宜兴市金琪洋生物质环境治理技术咨询有限公司 | Treatment method of piggery wastewater |
| CN109987709A (en) * | 2019-05-22 | 2019-07-09 | 东北大学 | The waste water treatment system and its application method of enhanced membrane aeration biomembrane reactor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1948183A (en) * | 2006-10-30 | 2007-04-18 | 南昌大学 | Film aeration biosuspension reactor |
| CN101817615A (en) * | 2010-03-15 | 2010-09-01 | 南昌大学 | Anaerobic-sequencing batch biofilm reactor-artificial wetland method for treating piggery wastewater |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0924373A (en) * | 1995-07-12 | 1997-01-28 | Kawasaki Steel Corp | Treatment of water containing organic matter and waste water treating device |
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2011
- 2011-03-07 CN CN 201110052787 patent/CN102101722B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1948183A (en) * | 2006-10-30 | 2007-04-18 | 南昌大学 | Film aeration biosuspension reactor |
| CN101817615A (en) * | 2010-03-15 | 2010-09-01 | 南昌大学 | Anaerobic-sequencing batch biofilm reactor-artificial wetland method for treating piggery wastewater |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平9-24373A 1997.01.28 |
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