CN103936156B - A kind of MBR membrane technique integrated sewage treating apparatus and sewage water treatment method thereof - Google Patents
A kind of MBR membrane technique integrated sewage treating apparatus and sewage water treatment method thereof Download PDFInfo
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- CN103936156B CN103936156B CN201410203394.0A CN201410203394A CN103936156B CN 103936156 B CN103936156 B CN 103936156B CN 201410203394 A CN201410203394 A CN 201410203394A CN 103936156 B CN103936156 B CN 103936156B
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- 239000012528 membrane Substances 0.000 title claims abstract description 67
- 238000000034 method Methods 0.000 title claims abstract description 62
- 239000010865 sewage Substances 0.000 title claims abstract description 58
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 37
- 238000006243 chemical reaction Methods 0.000 claims abstract description 43
- 239000007788 liquid Substances 0.000 claims abstract description 25
- 230000005484 gravity Effects 0.000 claims abstract description 3
- 230000000630 rising effect Effects 0.000 claims abstract description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 15
- 229910052760 oxygen Inorganic materials 0.000 claims description 15
- 239000001301 oxygen Substances 0.000 claims description 15
- 239000010802 sludge Substances 0.000 claims description 11
- 238000005276 aerator Methods 0.000 claims description 7
- 239000000945 filler Substances 0.000 claims description 4
- 239000004744 fabric Substances 0.000 claims description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 230000010354 integration Effects 0.000 description 6
- 238000005265 energy consumption Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 238000005273 aeration Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 102000002322 Egg Proteins Human genes 0.000 description 1
- 108010000912 Egg Proteins Proteins 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005842 biochemical reaction Methods 0.000 description 1
- 230000031018 biological processes and functions Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000005374 membrane filtration Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 210000004681 ovum Anatomy 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 150000003016 phosphoric acids Chemical class 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention discloses a kind of MBR membrane technique integrated sewage treating apparatus, comprise tank body and be arranged at anaerobic biological district in tank body, anoxic biochemical zone and aerobic and MBR membrane biological reaction district; Anaerobic biological district, aerobic and MBR membrane biological reaction district and anoxic biochemical zone divide left, center, right to distribute along tank body cross section; Anaerobic biological district with between aerobic and MBR membrane biological reaction district only bottom communicate, the top liquid level in aerobic and MBR membrane biological reaction district is higher than the top liquid level of anoxic biochemical zone, and top that is aerobic and MBR membrane biological reaction district is provided with and the rising pipe extending into aerobic and MBR membrane biological reaction district and the overflow weir be communicated with anoxic biochemical zone; The top liquid level of anoxic biochemical zone is higher than the top liquid level with anaerobic biological district, and the bottom of anoxic biochemical zone is communicated with by the top of gravity line with anaerobic biological district; Tank body is provided with the water inlet pipe be communicated with the anaerobic biological district of its inside.The invention also discloses the sewage water treatment method utilizing this equipment.
Description
Technical field
The invention belongs to field of Environment Protection, is a kind of anoxic-anaerobic-aerobic-membrane biological reaction treatment process integrated sewage treating apparatus of disposing of sewage and sewage water treatment method thereof specifically.
Background technology
Containing large amount of organic in sanitary sewage, also containing various virus, bacterium and parasitic ovum etc., also have the muriate, vitriol, phosphoric acid salt etc. of inorganic salts, very easily produce odor pollution environment, to human body and all kinds of animals and plants very harmful, therefore need harmless treatment.
Current sanitary sewage adopts one-level pre-treatment to add the method for secondary biochemical treatment mostly, wherein secondary biochemical treatment comprises activated sludge method processing technique and microbial film treatment process, mainly comprise bio-contact oxidation, SBR method, oxidation ditch process, A/O method etc., under conventional active sludge treatment process flow process is shown in:
Biochemical sewage → grid → water collecting basin → anaerobic pond → Aerobic Pond → second pond → discharge.
Conventional active sludge treatment process shortcoming: floor space is large, operation is complicated, invests high, and energy consumption is large, and sludge yield is higher, and effluent quality is poor.
In recent years, along with the widespread use of membrane filtration product, water treatment field also adopts MBR membrane bioreactor to replace the second pond in traditional technology to save part land area, but cost of investment, operation and maintenance cost are high.
In the market, adopt the integrated sewage treating apparatus of above technique, ubiquity working cost is high, effluent quality is unstable, sludge output is many, the shortcoming that nitrogen, tp removal rate are low.
The integration apparatus that current application MBR membrane technique is disposed of sewage, general employing anaerobic biological, anoxic are biochemical, aerobic MBR membrane biological reaction art breading, and each process section is along integration apparatus length direction step-by-step arrangement, when needing sewage, sludge reflux between each process section, just additional pump realizes.Therefore, energy consumption is high, and Operation and Maintenance is complicated, because quantity of reflux restricted dephosphorization denitrification clearance is low.
Summary of the invention
The present invention is directed to current sanitary sewage exist floor space large, energy consumption is high, sludge output is large, Operation and Maintenance is complicated, the shortcoming that dephosphorization denitrification clearance is low, provides a kind of floor space is few, energy consumption is low, effluent quality is high, product mud is few MBR membrane technique integrated sewage treating apparatus and sewage water treatment method thereof.
The present invention is by the following technical solutions:
A kind of MBR membrane technique integrated sewage treating apparatus, comprises tank body and is arranged at anaerobic biological district in tank body, anoxic biochemical zone and aerobic and MBR membrane biological reaction district; Described anaerobic biological district, aerobic and MBR membrane biological reaction district and anoxic biochemical zone divide left, center, right to distribute along tank body cross section; Anaerobic biological district with between aerobic and MBR membrane biological reaction district only bottom communicate, the top liquid level in aerobic and MBR membrane biological reaction district is higher than the top liquid level of anoxic biochemical zone, and top that is aerobic and MBR membrane biological reaction district is provided with and the rising pipe extending into aerobic and MBR membrane biological reaction district and the overflow weir be communicated with anoxic biochemical zone; The top liquid level of described anoxic biochemical zone is higher than the top liquid level with anaerobic biological district, and the bottom of anoxic biochemical zone is communicated with by the top of gravity line with anaerobic biological district; Tank body is provided with the water inlet pipe be communicated with the anaerobic biological district of its inside;
Described aerobic and MBR membrane biological reaction district comprises a MBR membrane bioreactor, and the bottom of described MBR membrane bioreactor is provided with the aerator be fixed on tank body, is provided with the MBR water outlet pipe extending out to tank body outside at the top of MBR membrane bioreactor.
The filler of sludge concentration and biochemical contact area is improved at described cloth in anaerobic biological district and anoxic biochemical zone.
The cross section of integrated sewage treating apparatus is circular or rectangle or square.
Utilize a sewage treatment process for MBR membrane technique integrated sewage treating apparatus,
Sewage promotes inflow anaerobic biological district from equalizing tank by water inlet pipe or by pump, carry out anaerobic treatment, after anaerobic biological, flow into aerobic and MBR membrane biological reaction district by aerobic zone water-in and carry out aerobic treatment, a large amount of bubbles that this district's aerator produces make this district's water body density reduce, thus liquid level improves, make the sewage after aerobic biochemical enter liquid level through overflow weir overflow and carry out anaerobic treatment higher than the anoxic biochemical zone of anaerobic zone liquid level, sewage after anoxic biochemistry is mixed with equalizing tank water from flowing into anaerobic biological district by the pipeline of anoxic biochemical zone to anaerobic biological district, enter another circulation, meanwhile, discharge or reuse after being extracted out by the water after biochemical treatment from the MBR water outlet pipe of the MBR membrane bioreactor of inserting aerobic and MBR membrane biological reaction district by pump, complete the process of whole sewage disposal.
The dissolved oxygen concentration of anaerobic treatment is 0.15-1mg/L, and the dissolved oxygen concentration of anaerobic treatment is below 0.15mg/L, and the dissolved oxygen concentration of aerobic treatment is 1-4.5mg/L.
Equipment of the present invention mainly comprises anaerobic biological district, anoxic biochemical zone, aerobic and MBR membrane biological reaction district, it is different from general integrated sewage treating apparatus, its above-mentioned three biochemical zones, left, center, right is divided to distribute along integration apparatus cross section, aerobic and MBR membrane biological reaction district is positioned at middle part, and anoxic biochemical zone, anaerobic biological district are respectively in the left and right sides.The cross section of this integrated sewage treating apparatus is circular or rectangle (square); Anaerobic biological district, anoxic biochemical zone, aerobic and MBR membrane biological reaction district realize circulating of sewage by perforate and internal duct.
Method of the present invention mainly comprises anaerobic technique section, anoxic process section, aerobic and MBR membrane biological reaction section, be characterized in: above-mentioned three process sections circulate in the following order and carry out:------aerobic and MBR membrane biological reaction section--anoxic process section--is called for short CA to anaerobic technique section to anoxic process section
2o-MBR technique, by its cycle index of adjustment air input adjustable.Sanitary sewage enters CA after grid, equalizing tank
2o-MBR circulation technology, in this process, sewage is through anoxic, anaerobism, aerobic multiple circulation, by adjustment air input, each process section dissolved oxygen concentration is adjusted in following scope: adjust anoxic process section dissolved oxygen concentration to be 0.15-1mg/L, anaerobic technique section dissolved oxygen concentration is below 0.15mg/L, aerobic process section dissolved oxygen concentration is 1-4.5mg/L, objectionable impurities in sewage is in anoxic, anaerobism, under the abundant participation of aerobic flora, obtain degraded to greatest extent to remove, anoxic, anaerobism, the circular flow of aerobic process, eliminate ammonia nitrogen in sewage simultaneously, total nitrogen and total phosphorus.In treating processes, anoxic and anaerobic biological process fully, produce mud few.
Integrated sewage treating apparatus of the present invention, adopts domestic sewage processing method described above, namely adopts anoxic process section, anaerobic technique section, aerobic and MBR membrane biological reaction section circulation technology, is called for short CA
2o-MBR integrated sewage treating apparatus.The power of effluent cycle flowing from the air of aeration, by regulating the adjustable cycle index of aeration rate.This integrated sewage treating apparatus, compact construction, generally makes metal can, and its cross section is circular or rectangle (square), aerobic and MBR membrane biological reaction section is positioned at the middle part of circle or rectangle (square), and anoxic process section, anaerobic technique section are respectively in both sides.
When the present invention runs, sewage flows into (or being promoted by pump) anaerobic biological district from equalizing tank, after anaerobic biological, flow into aerobic and MBR membrane biological reaction district, the existence of a large amount of bubble in this district makes this district's water body density low, thus liquid level improves, and makes the sewage overflow after aerobic biochemical enter the anoxic biochemical zone of liquid level higher than anaerobic zone liquid level, sewage after anoxic biochemistry is mixed with equalizing tank water from flowing into anaerobic biological district again by internal duct, enters another circulation.Meanwhile, the water after biochemical treatment is extracted out from the MBR membrane bioreactor of inserting aerobic and MBR membrane biological reaction district by pump, as required discharge or reuse.
Beneficial effect of the present invention is as follows: the inventive method and equipment, because the iterative cycles of anoxic, anaerobism, aerobic process runs, biochemical reaction is abundant, and concentrate in an integral device, compact construction, pipeline is few, and therefore efficiency is high, floor space is few, energy consumption is low, effluent quality is high and stable, sludge output few, and nitrogen, tp removal rate are high.This decoration form compact construction, circulating of sewage is realized by the perforate between each biochemical zone and internal duct, because the short resistance of pipeline is little, between biochemical zone, the liquid level difference circulating through the inflatable body formation of aerobic aeration institute of sewage just can realize, therefore save mechanical lifting link, save the energy.Simultaneously due to the repeatedly circulation of sewage between each unit, the height of dephosphorization denitrification clearance.
Accompanying drawing explanation
Fig. 1 is the cross sectional representation of integration apparatus of the present invention
In figure: 1, tank body, 2, overflow weir, 3, MBR water outlet pipe, 4, anoxic is to anaerobism internal duct, 5, water inlet pipe, 6, MBR membrane bioreactor, 7, filler, 8, aerator, 9, aerobic zone water-in, 10, anaerobic biological district, 11, aerobic and MBR membrane biological reaction district, 12, anoxic biochemical zone.
Embodiment
In the cross sectional representation of Fig. 1 integration apparatus, the middle part of integration tank body 1 is aerobic and MBR membrane biological reaction district 11, both sides are respectively anaerobic biological district 10, anoxic biochemical zone 12, in anaerobic biological district 10 and anoxic biochemical zone 12, are furnished with filler 7, to improve sludge concentration and biochemical contact area, water inlet pipe 5 is fixed on tank body 1, aerator 8 is installed on bottom that is aerobic and MBR membrane biological reaction district 11, washes away MBR film silk to water body oxygen; Top that is aerobic and MBR membrane biological reaction district 11 is provided with the MBR water outlet pipe 3 be communicated with tank body 1 and the overflow weir 2 be communicated with anoxic biochemical zone; Anaerobic biological district 10 is communicated with by both aerobic zone water-ins 9 of bottom with aerobic and MBR membrane biological reaction district 11.Aerobic and MBR membrane biological reaction district 11 comprises a MBR membrane bioreactor 6.
During operation, anaerobism, anoxic, aerobic biochemical technological cycle are carried out, by its cycle index of adjustment air input adjustable.Each process section dissolved oxygen concentration adjustment is in following scope: adjust anoxic process section dissolved oxygen concentration to be 0.15-1mg/L, anaerobic technique section dissolved oxygen concentration is below 0.15mg/L, aerobic process section dissolved oxygen concentration is 1-4.5mg/L, objectionable impurities in sewage is in the abundant presence of anoxic, anaerobism, aerobic flora, obtain degraded to greatest extent to remove, the circular flow of anoxic, anaerobism, aerobic process, eliminates the ammonia nitrogen in sewage, total nitrogen and total phosphorus simultaneously.
In operation, sewage flows into (or being promoted by pump) anaerobic biological district 10 from equalizing tank by water inlet pipe 5, after anaerobic biological, aerobic and MBR membrane biological reaction district 11 is flowed into by aerobic biochemical district water-in 9, a large amount of bubbles that this district's aerator 8 produces make this district's water body density low, thus liquid level improves, the sewage after aerobic biochemical is made to enter the anoxic biochemical zone 12 of liquid level higher than anaerobic zone liquid level through overflow weir 2 overflow, sewage after anoxic biochemistry is mixed with equalizing tank water from flowing into anaerobic biological district 10 again to anaerobism internal duct 4 by anoxic, enter another circulation.Meanwhile, discharge or reuse after being extracted out by the water after biochemical treatment from the MBR water outlet 3 of the MBR membrane bioreactor 6 of inserting aerobic and MBR membrane biological reaction district by pump, complete the process of whole sewage disposal.
Claims (4)
1. a MBR membrane technique integrated sewage treating apparatus, is characterized in that, comprises tank body and is arranged at anaerobic biological district in tank body, anoxic biochemical zone and aerobic and MBR membrane biological reaction district; Described anaerobic biological district, aerobic and MBR membrane biological reaction district and anoxic biochemical zone divide left, center, right to distribute along tank body cross section; Anaerobic biological district with between aerobic and MBR membrane biological reaction district only bottom communicate, the top liquid level in aerobic and MBR membrane biological reaction district is higher than the top liquid level of anoxic biochemical zone, and top that is aerobic and MBR membrane biological reaction district is provided with and the rising pipe extending into aerobic and MBR membrane biological reaction district and the overflow weir be communicated with anoxic biochemical zone; The top liquid level of described anoxic biochemical zone is higher than the top liquid level with anaerobic biological district, and the bottom of anoxic biochemical zone is communicated with by the top of gravity line with anaerobic biological district; Tank body is provided with the water inlet pipe be communicated with the anaerobic biological district of its inside;
Described aerobic and MBR membrane biological reaction district comprises a MBR membrane bioreactor, and the bottom of described MBR membrane bioreactor is provided with the aerator be fixed on tank body, is provided with the MBR water outlet pipe extending out to tank body outside at the top of MBR membrane bioreactor;
In described anaerobic biological district and anoxic biochemical zone, cloth is improved the filler of sludge concentration and biochemical contact area.
2. MBR membrane technique integrated sewage treating apparatus as claimed in claim 1, is characterized in that: the cross section of described equipment is circular or rectangle or square.
3. one kind utilizes the sewage water treatment method of the MBR membrane technique integrated sewage treating apparatus described in claim 1, it is characterized in that, sewage promotes inflow anaerobic biological district from equalizing tank by water inlet pipe or by pump, carry out anaerobic treatment, after anaerobic biological, flow into aerobic and MBR membrane biological reaction district by aerobic zone water-in and carry out aerobic treatment, a large amount of bubbles that this district's aerator produces make this district's water body density reduce, thus liquid level improves, make the sewage after aerobic biochemical enter liquid level through overflow weir overflow and carry out anaerobic treatment higher than the anoxic biochemical zone of anaerobic zone liquid level, sewage after anoxic biochemistry is mixed with equalizing tank water from flowing into anaerobic biological district by the pipeline of anoxic biochemical zone to anaerobic biological district, enter another circulation, meanwhile, discharge or reuse after being extracted out by the water after biochemical treatment from the MBR water outlet pipe of the MBR membrane bioreactor of inserting aerobic and MBR membrane biological reaction district by pump, complete the process of whole sewage disposal.
4. a kind of sewage water treatment method utilizing MBR membrane technique integrated sewage treating apparatus as claimed in claim 3, it is characterized in that, the dissolved oxygen concentration of anaerobic treatment is 0.15-1mg/L, the dissolved oxygen concentration of anaerobic treatment is below 0.15mg/L, and the dissolved oxygen concentration of aerobic treatment is 1-4.5mg/L.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105948258A (en) * | 2016-07-06 | 2016-09-21 | 苏州苏科环保科技有限公司 | High-tower-type A2/O(Anaerobic-Anoxic-Oxic)-MBR (Membrane Bioreactor) |
| CN109879424B (en) * | 2019-03-27 | 2023-09-19 | 泰兴金江化学工业有限公司 | AO wastewater treatment device and treatment method |
| CN110294570A (en) * | 2019-06-28 | 2019-10-01 | 浙江水艺环境科技有限公司 | A kind of novel pretreatment membrane bioreactor and its application method |
| CN111592110A (en) * | 2020-06-29 | 2020-08-28 | 中材建设有限公司 | Small-sized domestic sewage treatment system and sewage treatment process |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102276103A (en) * | 2010-09-06 | 2011-12-14 | 中国环境科学研究院 | Integrated in-situ denitrification culture wastewater biological treatment device and treatment method |
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| CN102276103A (en) * | 2010-09-06 | 2011-12-14 | 中国环境科学研究院 | Integrated in-situ denitrification culture wastewater biological treatment device and treatment method |
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