CN102126814A - Combination advanced treatment method for oil extraction wastewater - Google Patents
Combination advanced treatment method for oil extraction wastewater Download PDFInfo
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- CN102126814A CN102126814A CN 201110028821 CN201110028821A CN102126814A CN 102126814 A CN102126814 A CN 102126814A CN 201110028821 CN201110028821 CN 201110028821 CN 201110028821 A CN201110028821 A CN 201110028821A CN 102126814 A CN102126814 A CN 102126814A
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- 239000002351 wastewater Substances 0.000 title claims abstract description 60
- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000000605 extraction Methods 0.000 title claims description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 78
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 39
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000000945 filler Substances 0.000 claims abstract description 19
- 238000005273 aeration Methods 0.000 claims abstract description 9
- 238000012545 processing Methods 0.000 claims description 21
- 238000001914 filtration Methods 0.000 claims description 16
- 238000011049 filling Methods 0.000 claims description 12
- 229910052799 carbon Inorganic materials 0.000 claims description 10
- 239000000919 ceramic Substances 0.000 claims description 10
- 230000002906 microbiologic effect Effects 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 8
- 239000002028 Biomass Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 238000012856 packing Methods 0.000 claims description 4
- 230000006866 deterioration Effects 0.000 claims description 3
- 229920000098 polyolefin Polymers 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 17
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 8
- 244000005700 microbiome Species 0.000 abstract description 8
- 239000001301 oxygen Substances 0.000 abstract description 8
- 229910052760 oxygen Inorganic materials 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 239000005416 organic matter Substances 0.000 abstract description 4
- 239000007789 gas Substances 0.000 abstract description 3
- 238000011272 standard treatment Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 36
- 230000008569 process Effects 0.000 description 24
- 238000006731 degradation reaction Methods 0.000 description 8
- 230000015556 catabolic process Effects 0.000 description 7
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- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 4
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
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- 238000010521 absorption reaction Methods 0.000 description 3
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- Treatment Of Water By Oxidation Or Reduction (AREA)
- Water Treatment By Sorption (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
本发明涉及一种组合深度处理采油废水的方法，属于油气田开采和环保工程领域，该方法包括：水解酸化单元：该单元内悬挂聚烯烃类材质半软性填料，利用附着生长在填料上的厌氧、缺氧微生物降解废水中的有机物；曝气生物滤池单元：在滤池体内部填充生物陶粒填料，采用强制曝气，使填料上附着生长好氧微生物；臭氧接触单元：若检测来水水质COD在100-200mg/L以上时开启臭氧发生器，否则废水直接流入下一单元；生物活性炭过滤单元：该单元内部填充活性炭作为填料，采用强制曝气，使活性炭上附着生长好氧微生物。该方法可填补目前国内外采油废水外排废水水质升级达标处理技术的空缺。
The invention relates to a method for combined advanced treatment of oil production wastewater, which belongs to the fields of oil and gas field exploitation and environmental protection engineering. Oxygen and anoxic microorganisms degrade organic matter in wastewater; biological aerated filter unit: fill biological ceramsite filler inside the filter body, and use forced aeration to make aerobic microorganisms grow on the filler; ozone contact unit: if detected When the COD of the water quality is above 100-200mg/L, the ozone generator will be turned on, otherwise the wastewater will flow directly into the next unit; biological activated carbon filter unit: the unit is filled with activated carbon as a filler, and forced aeration is used to make the activated carbon adhere to the growth of aerobic microorganisms . This method can fill in the vacancy of domestic and foreign oil production wastewater effluent water quality upgrade and standard treatment technology.
Description
Technical field
The invention belongs to exploitation of oil-gas field and field of environmental engineering, be specifically related to a kind of biological treatment and handle the oil extraction waste water advanced treatment novel process that combines with materialization.
Background technology
Oil extraction waste water is meant the waste water that produces in the oil production process.Because geologic condition, oil product, water filling character, mining type and the crude oil transmission in the place of production, oil field and the whole technology of preliminary working is different, the character of oil extraction waste water also varies.At present, the oil extraction waste water of comparative maturity effluxes treatment process and substantially all adopts physico-chemical pretreatment+biochemical second-stage treatment technology, carry out country's " integrated wastewater discharge standard " (GB8978-1996) in Chinese water outlet, general oil field waste treatment station water outlet can reach secondary standard, water outlet chemical oxygen demand (COD) (COD
Cr) be worth control less than 150mg/L.
Biochemical second-stage treatment technology is commonly used conventional activated sludge process, biological contact oxidation process etc., and acidication+catalytic oxidation, anaerobic-aerobic anaerobism+aerobic treatment process that combine such as (AAA) technology, the multi-stage oxidizing pool alternately.On actual effect, the obvious processing effect of anaerobism+aerobic treatment process that combines is better than pure aerobic treatment process.Generally speaking, adopt the water outlet COD of aerobic treatment process
CrGenerally about 150mg/l, and the treatment process water outlet COD that anaerobic-aerobic combines
CrCan reach 80～120mg/l.Common biologic treating technique running cost is low, simple to operate, but also all has some practical problemss, as water outlet COD
CrIndex is higher, capacity of resisting impact load is poor, sludge bulking, water outlet SS are higher etc., can not satisfy the environmental requirement of actual requirement of engineering and increasingly stringent fully.Along with country and local more and more higher to the environmental quality requirement in all kinds of environment sensitives zone, strict more to the discharging water quality requirement of stone oil extraction waste water, for example, some zone requires to efflux recovered water COD
CrIndex request is less than 60mg/L, and it is imperative therefore to develop new oil extraction waste water water quality upgrading processing technology.
Acidication technology is that the residence time that anerobic sowage digests is controlled at the acidication stage, do not enter and produce the hydrogen product acetate stage, utilize facultative acidication bacterium to carry out the technology of biological wastewater treatment, amphimicrobe mainly is the organism that the organism of difficult for biological degradation in the oil extraction waste water is changed into readily biodegradable, improve the biodegradability of waste water, be beneficial to follow-up aerobic treatment.Acidication is handled the pre-treatment of handling as wastewater biochemical, can improve the sewage biochemical property, reduce the load of subsequent biological treatment, thereby be widely used in the waste water difficult for biological degradation process field.
Biological aerated filter process be beginning of the nineties late 1980s on the basis of ordinary biofilter, use for reference water-feeding leaching pool technology and develop the sewage treatment process of rise.Its unique filler design, used for reference the advantage of biological filter and biological contact oxidation process, combine multiple treatment process such as filtration, absorption and biological metabolism, make it have advantages such as contaminant removal efficiency height, capacity of resisting impact load, sludge yield are few, no sludge bulking, simultaneously BAF is applicable to handling low organic loading waste water, good prospects for application arranged in that oil extraction waste water water quality is during upgrading.
Ozone-biological activated carbon (O
3-BAC) technology is with a kind of water technologies of multiple treatment technology organic phase bonded such as advanced oxidation, biological treatment, absorption.Utilize ozone equipment optionally biomacromolecule, colloid etc. to be resolved into the solvability small molecules, increase the waste water biodegradable, the adsorption, microorganism that utilize gac in the gac then are to the organism in the organic Decomposition degrading waste water, and gac is regenerated to organic Degradation by microorganism.Ozone-biological activated carbon not only can effectively be removed the dissolved organic matter in the water, improves effluent quality, guarantees discharged wastewater met the national standard, and has improved the loading capacity of biological activated carbon, has prolonged the work-ing life of gac.It has that processing efficiency height, volumetric loading are big, strong shock resistance, facility compact, occupation of land less, advantage such as initial cost and working cost be low.Have not yet to see in the oil extraction waste water advanced treatment and use, water quality requirement is higher or when containing the not biodegradable organism of higher concentration when effluxing, and can after the BAF biological treatment one section ozone-biological activated carbon unit be set.
Summary of the invention
The objective of the invention is to overcome existing oil-extracting waste water treatment process and can not reach water outlet COD
CrThe weak point of＜60mg/L proposes the method that a kind of combined depth is handled oil extraction waste water.This method can be filled up the upgrade vacancy of treatment technology up to standard of present both at home and abroad oil extraction waste water efflux wastewater water quality.
A kind of combined depth that the present invention proposes is handled the method for oil extraction waste water, it is characterized in that this method comprises four processing units of method, all finishes at normal temperatures and pressures, and concrete steps are as follows:
1) acidication unit: at first enter this unit through pretreated oil extraction waste water, hang polyolefins material semi soft packing in this unit, utilize the anaerobism of apposition growth on filler, the organism in the anoxic microbiological deterioration waste water, effectively hydraulic detention time is 8～16h, its influent load 0.3-0.8kgCOD/m
3My god, COD removes load 0.10-0.20kgCOD/m
3My god, water outlet enters the subsequent disposal unit;
2) BAF unit: by the water after the acidication cell processing, enter the BAF unit, at the inner filled biomass ceramics filling of filter tank body, the particle diameter of ceramics filling is 1-5mm, adopt and force aeration, gas-water ratio 0.75-3: 1, make apposition growth aerobic microbiological on the filler, hydraulic load 0.5-1.5m
3/ m
2H, hydraulic detention time 1-4h, COD influent load 2-4kgCOD/m
3My god, remove load 0.8-1.5kgCOD/m
3My god;
Backwash is carried out in the water outlet that the BAF unit by using is stored in the backwash water tank, and per 1～3 day once, and backwash intensity is 5～8L/ (m
2S);
3) ozone osculating element: the BAF water outlet enters the ozone osculating element, when 100-200mg/L is above, open ozonizer if detect the water water-quality COD, waste water contacts with the ozone that ozonizer produces, its ozone dosage 10-25mg/L, duration of contact 20-50min, otherwise waste water flows directly into next unit (promptly do not work in the ozone unit generally speaking);
4) biologic active carbon filtration unit: flow into the biologic active carbon filtration unit by the effusive water of ozone osculating element, the inner gac of filling in this unit is as filler, adopt and force aeration, gas-water ratio 0.75-2.00: 1, make apposition growth aerobic microbiological on the gac, waste water is at this unitary hydraulic detention time 0.5-5h, empty bed filtering velocity 0.5-3m/h, its influent load 3-6kgCOD/m
3My god, remove load 1-2kgCOD/m
3My god;
Backwash is carried out in the water outlet that the biological activated carbon unit by using is stored in the backwash water tank, and per 2～3 days are once,, backwash intensity is 5～8L/ (m
2S).
Effect of the present invention and advantage:
1, the present invention is provided with processing units such as anoxic (acidication), aerobic (BAF), advanced oxidation, biological absorption simultaneously, and determined the optimal processing parameter of each cell processing oil extraction waste water, can make oil extraction waste water through stage purification, realize multinomial functions such as organic matter degradation, denitrogenation dephosphorizing sewage.Compare with the prior art flow process, unusual effect of the present invention can be stablized the effluent index that reaches higher, promptly reaches COD
Cr≤ 50mg/L, petroleum-type≤3mg/L, ammonia nitrogen≤8mg/L, volatile phenol＜0.3mg/L, suspended substance≤10mg/L.
2, the present invention's using ozone-BAC process in the oil extraction-generated waste water advanced treatment first can ensure that water outlet is up to standard.This technology capacity of resisting impact load is strong, processing efficiency height, system stability.
3, to adopt ozonize technology be water quality emergency guarantee unit in the present invention, do not open generally speaking to reduce running cost, and technology is flexible, and can guarantee has higher water outlet fraction under lower cost.
4, the present invention is not only applicable to large, medium and small type oil extraction waste water and handles new project, is particularly useful for the upgrading transformation project up to standard of oil extraction waste water.
Description of drawings
The oil extraction waste water advanced treatment process typical process synoptic diagram that Fig. 1 proposes for the present invention.
Embodiment
A kind of combined depth that the present invention proposes is handled the method for oil extraction waste water, it is characterized in that this comprises four processing units of method, all finishes at normal temperatures and pressures, and concrete steps are as follows:
1) acidication unit: at first enter this unit through pretreated oil extraction waste water, hang polyolefins material semi soft packing in this unit, utilize the anaerobism of apposition growth on filler, the organism in the anoxic microbiological deterioration waste water, effectively hydraulic detention time is 8～16h, its influent load 0.3-0.8kgCOD/m
3My god, COD removes load 0.10-0.20kgCOD/m
3My god, water outlet enters the subsequent disposal unit;
2) BAF unit: by the water after the acidication cell processing, enter the BAF unit, at the inner filled biomass ceramics filling of filter tank body, the particle diameter of ceramics filling is 1-5mm, adopt and force aeration, gas-water ratio 0.75-3: 1, make apposition growth aerobic microbiological on the filler, hydraulic load 0.5-1.5m
3/ m
2H, hydraulic detention time 1-4h, COD influent load 2-4kgCOD/m
3My god, remove load 0.8-1.5kgCOD/m
3My god;
Backwash is carried out in the water outlet that the BAF unit by using is stored in the backwash water tank, and per 1～3 day once, and backwash intensity is 5～8L/ (m
2S);
3) ozone osculating element: the BAF water outlet enters the ozone osculating element, when 100-200mg/L is above, open ozonizer if detect the water water-quality COD, waste water contacts with the ozone that ozonizer produces, its ozone dosage 10-25mg/L, duration of contact 20-50min, otherwise waste water flows directly into next unit (promptly do not work in the ozone unit generally speaking);
4) biologic active carbon filtration unit: flow into the biologic active carbon filtration unit by the effusive water of ozone osculating element, the inner gac of filling in this unit is as filler, adopt and force aeration, gas-water ratio 0.75-2.00: 1, make apposition growth aerobic microbiological on the gac, waste water is at this unitary hydraulic detention time 0.5-5h, empty bed filtering velocity 0.5-3m/h, its influent load 3-6kgCOD/m
3My god, remove load 1-2kgCOD/m
3My god;
Backwash is carried out in the water outlet that the biological activated carbon unit by using is stored in the backwash water tank, and per 2～3 days are once,, backwash intensity is 5～8L/ (m
2S);
The function of four processing units is as follows among the present invention:
1) acidication unit: the oil extraction waste water of discharging from pretreatment unit enters hydrolysis acidification pool, utilize in the pond detest, the anoxic microorganism is small organic molecule with macromolecular petroleum hydrocarbon hydrolysis of organic matter, thereby improve the biodegradability of sewage, and utilize the microorganism of pond inner suspension growth to dam suspended substance to greatest extent to reduce the processing load of follow-up processing flow.Water inlet COD
CrBe controlled between 300～600mg/L petroleum-type 5～20mg/L, water outlet COD
CrGenerally can reach 250-400mg/L, petroleum-type 3-10mg/L.
2) BAF unit: the effect of aerobic treatment unit is under the effect of aerobic microbiological, and biodegradable organism in the petroleum wastewater is generated CO by biochemical reaction
2And H
2O.This unit can be with water outlet COD
CrBe controlled at 80-150mg/L, petroleum-type is controlled at 0.5-2mg/L.
3) ozone protected location: generally speaking, the ozone protected location can not worked.And under the situation of, winter relatively poor in oil extraction waste water water quality or impact load, aerobe treat effluent COD
CrOpening when higher, is the material of readily biodegradable by ozone oxidation with the organic matter degradation of difficult for biological degradation in the water.
4) biological activated carbon unit: aerobe is handled and the water outlet of ozone protected location enters the biological activated carbon processing unit; utilize the organic pollutant of gac, ensure that effluent quality reaches COD difficult degradation in the Degradation associated treatment water of organic adsorption and microorganism
CrRequirement less than 50mg/L.
Enumerate 3 embodiment below, in conjunction with the accompanying drawings, the present invention further specified, but the invention is not restricted to this 3 embodiment:
Embodiment 1: certain oil extraction waste water is handled the treatment process of lab scale treatment unit.
The on-the-spot lab scale treatment unit of certain oil-gas field oil extraction waste water treatment station, the per day processing water yield is 1m
3/ d, raw water quality index COD
Cr200-500mg/L, BOD
560-200mg/L, NH
3-N10-20mg/L, TN15-25mg/L, petroleum-type 5-10mg/L adopts the technical process of Fig. 1 to carry out the lab scale test.
Each cell parameters of this embodiment is as follows:
1) acidication unit: it is the treating pond of 0.8 * 1.3 * 0.8m that this unit adopts size, hang the radial medium-soft polypropylene of disk filler in the pond, the pending waste water of raw water box enters this unit, and hydraulic detention time is preferably 12-16h, and the COD influent load is preferably 0.3-0.5kgCOD/m
3My god, COD removes load and is preferably 0.10-0.20kgCOD/m
3My god;
2) BAF unit: adopt biological ceramic particle filter post, filtrate height overall 2m, filter column diameter 300mm, filled biomass ceramic grain filter in the filter post, the particle diameter of ceramics filling is 1-5mm, gas-water ratio is preferably 0.75-2.00: 1, hydraulic load is preferably 0.7m
3/ m
2H is preferably 3h at this processing section hydraulic detention time, and the COD influent load is preferably 2-3kgCOD/m
3My god, remove load and be preferably 0.8-1.5kgCOD/m
3My god; Utilize water outlet to carry out backwash, every 24h once, backwash intensity is 6L/ (m
2S).The required oxygen of filter post is provided by air compressor machine.
3) ozone osculating element: the ozone dosage is preferably 10-25mg/L, is preferably 40min duration of contact.Ozone is opened at BAF water outlet COD＞100mg/L.
4) biologic active carbon filtration unit: adopt biological activated carbon filter post, height overall 2m, diameter 150mm, filler adopts particle shape biological activated carbon (diameter 1-5mm) in the filter post, hydraulic detention time 1h, empty bed filtering velocity 1.5m/h, the COD 2-4kgCOD/m that loads
3My god, remove load 1-2kgCOD/m
3My god, gas-water ratio is preferably 0.75-1.00: 1; The filter post utilize water outlet to carry out backwash, every 48h once, backwash intensity is 5L/ (m
2S).The required oxygen of filter post is provided by air compressor machine.
This device operation 6 months, stable water outlet reaches COD
Cr≤ 50mg/L, petroleum-type≤3mg/L, ammonia nitrogen≤8mg/L, volatile phenol≤0.3mg/L, the emission request of suspended substance≤20mg/L.
Embodiment 2: certain oil extraction waste water is handled the treatment process of pilot scale treatment unit.
Certain oil production waste water in oil field pilot scale treatment unit, treatment scale is 24m
3/ d, the influent quality index is COD
Cr200-350mg/L, BOD
5100-150mg/L, NH
3-N15mg/L, petroleum-type 10-20mg/L, SS50mg/L.
Adopt the technical process of Fig. 1 to carry out pilot plant test.
Each cell parameters is as follows among this embodiment:
1) acidication unit: it is the treating pond of 3.6 * 2.4 * 2.3m that this unit adopts size, hang the radial polypropylene filler of disk in the pond, the pending waste water of raw water box enters this unit, and hydraulic detention time is preferably 8-12h, and the COD influent load is preferably 0.5-0.8kgCOD/m
3My god, COD removes load and is preferably 0.10-0.20kgCOD/m
3My god;
2) aeration and biological filter unit: adopt diameter 1.5m, the filter post of filtrate total height 3m, filled biomass ceramic grain filter in the filter post, hydraulic load is preferably 0.5-1.5m
3/ m
2H is preferably 1-3h at this processing section hydraulic detention time, and the COD influent load is preferably 2-4kgCOD/m
3My god, remove load and be preferably 0.8-1.5kgCOD/m
3My god, gas-water ratio is preferably 0.75-3.00: 1, utilize water outlet to carry out backwash, every 48h once, backwash intensity is 8L/ (m
2S).The required oxygen of filter post is provided by air compressor machine.
3) ozone contact tank: the ozone dosage is preferably 10-25mg/L, is preferably 30min duration of contact.Ozone is opened at BAF water outlet COD＞120mg/L.
4) biologic active carbon filtration unit: adopt biological activated carbon, filter post height overall 2m, diameter 700mm, filler adopts particle shape biological activated carbon (diameter 1-5mm), hydraulic detention time 0.8h, empty bed filtering velocity 2.5m/h, the COD load is preferably 2-3kgCOD/m
3My god, remove load and be preferably 1-1.5kgCOD/m
3My god, gas-water ratio is preferably 0.75-1.00: 1.The required oxygen of filter post is provided by air compressor machine.
This device stable water outlet reaches COD
Cr≤ 50mg/L, petroleum-type≤3mg/L, ammonia nitrogen≤8mg/L, volatile phenol≤0.3mg/L, the emission request of suspended substance≤20mg/L.
Application example 3: certain oil extraction waste water treatment project demonstration
Certain oil production waste water in oil field advanced treatment engineering demonstration, treatment scale is 10000m
3/ d, design influent quality index is COD
Cr200-350mg/L, BOD
5100-150mg/L, NH
3-N15mg/L, petroleum-type 10-20mg/L, SS50mg/L.
Adopt the technical process of Fig. 1 to carry out the engineering demonstration.
In this example, the main design parameters of this device is as follows:
1) hydrolysis acidification pool: adopting size is the treating pond of 18 * 12 * 6m, totally four groups, hang the radial semi soft packing of disk in the pond, and packed height is 3.5m, hydraulic detention time 12h, the COD influent load is preferably 0.4-0.8kgCOD/m
3My god, COD removes load and is preferably 0.10-0.20kgCOD/m
3My god.
2) BAF: adopting size is the treating pond of 8 * 10 * 6m, and totally four groups, body inner filler of filling in pond adopts particle shape biological activated carbon (diameter 1-5mm), packed height 4m, hydraulic detention time 2.8h, design COD influent load 0.3-0.6kgCOD/m
3My god, COD removes load 0.1-0.2kgCOD/m
3My god, gas-water ratio 1-3: 1, utilize water outlet to carry out backwash, every 24h once, backwash intensity is 7L/ (m
2S).The required oxygen in filter tank is provided by aerator.
3) ozone osculating element: adopt the ozone pond, ozone dosage 10-25mg/L, duration of contact 30min.Ozone is opened at BAF water outlet COD＞100mg/L.
4) biologic active carbon filtration unit: adopting size is the treating pond of 12 * 8 * 4.5m, and filler adopts granular active carbon (diameter 1-5mm), duration of contact 1h, empty bed filtering velocity 3m/h, the COD load is preferably 3-5kgCOD/m
3My god, remove load and be preferably 1-2kgCOD/m
3My god, gas-water ratio is preferably 0.75-1.00: 1.The required oxygen in filter tank is provided by aerator.
This project can be stablized and reaches COD
Cr≤ 60mg/L, petroleum-type≤3mg/L, ammonia nitrogen≤8mg/L, volatile phenol≤0.3mg/L, the emission request of suspended substance≤20mg/L.
Above-mentioned embodiment is used for the present invention that explains, rather than limits the invention, and in the protection domain of spirit of the present invention and claim, any modification and change to the present invention makes all fall into protection scope of the present invention.
Claims (1)
1. the method for a combined depth processing oil extraction waste water is characterized in that this method comprises four processing units of method, all finishes at normal temperatures and pressures, and concrete steps are as follows:
1) acidication unit: at first enter this unit through pretreated oil extraction waste water, hang polyolefins material semi soft packing in this unit, utilize the anaerobism of apposition growth on filler, the organism in the anoxic microbiological deterioration waste water, effectively hydraulic detention time is 8～16h, its influent load 0.3-0.8kgCOD/m
3My god, COD removes load 0.10-0.20kgCOD/m
3My god, water outlet enters the subsequent disposal unit;
2) BAF unit: by the water after the acidication cell processing, enter the BAF unit, the inner filled biomass ceramics filling in the filter tank, the particle diameter of ceramics filling is 1-5mm, adopt and force aeration, gas-water ratio 0.75-3: 1, make apposition growth aerobic microbiological on the filler, hydraulic load 0.5-1.5m
3/ m
2H, hydraulic detention time 1-4h, COD influent load 2-4kgCOD/m
3My god, remove load 0.8-1.5kgCOD/m
3My god;
Backwash is carried out in the water outlet that the BAF unit by using is stored in the backwash water tank, and per 1～3 day once, and backwash intensity is 5～8L/ (m
2S);
3) ozone osculating element: the BAF water outlet enters the ozone osculating element, when 100-200mg/L is above, open ozonizer if detect the water water-quality COD, waste water contacts with the ozone that ozonizer produces, ozone dosage 10-25mg/L, duration of contact 20-50min, otherwise waste water flows directly into next unit;
4) biologic active carbon filtration unit: flow into the biologic active carbon filtration unit by the effusive water of ozone osculating element, the inner gac of filling in this unit is as filler, adopt and force aeration, gas-water ratio 0.75-2.00: 1, make apposition growth aerobic microbiological on the gac, waste water is at this unitary hydraulic detention time 0.5-5h, empty bed filtering velocity 0.5-3m/h, its influent load 3-6kgCOD/m
3My god, remove load 1-2kgCOD/m
3My god;
Backwash is carried out in the water outlet that the biological activated carbon unit by using is stored in the backwash water tank, and per 2～3 days are once,, backwash intensity is 5～8L/ (m
2S).
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| CN103102040A (en) * | 2011-11-10 | 2013-05-15 | 中国石油化工股份有限公司 | Method for treating refinery sewage organic matter |
| CN103253824A (en) * | 2013-05-03 | 2013-08-21 | 华南理工大学 | Method for treating cyanogen-containing electroplating wastewater by combining ozone and biological aerated filter |
| CN103382072A (en) * | 2012-05-04 | 2013-11-06 | 中国海洋石油总公司 | Processing method for coal gasification wastewater |
| CN103693814A (en) * | 2013-12-26 | 2014-04-02 | 天津市工业微生物研究所 | Method for treating tertiary oil recovery wastewater by combining efficient dominant bacteria and flocculent precipitate |
| CN105776746A (en) * | 2016-04-05 | 2016-07-20 | 北京北华中清环境工程技术有限公司 | Integrated wastewater treatment process and system for chemical industrial park |
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| CN103102040A (en) * | 2011-11-10 | 2013-05-15 | 中国石油化工股份有限公司 | Method for treating refinery sewage organic matter |
| CN103382072A (en) * | 2012-05-04 | 2013-11-06 | 中国海洋石油总公司 | Processing method for coal gasification wastewater |
| CN103382072B (en) * | 2012-05-04 | 2015-05-27 | 中国海洋石油总公司 | Processing method for coal gasification wastewater |
| CN103253824A (en) * | 2013-05-03 | 2013-08-21 | 华南理工大学 | Method for treating cyanogen-containing electroplating wastewater by combining ozone and biological aerated filter |
| CN103693814A (en) * | 2013-12-26 | 2014-04-02 | 天津市工业微生物研究所 | Method for treating tertiary oil recovery wastewater by combining efficient dominant bacteria and flocculent precipitate |
| CN105776746A (en) * | 2016-04-05 | 2016-07-20 | 北京北华中清环境工程技术有限公司 | Integrated wastewater treatment process and system for chemical industrial park |
| CN106242022A (en) * | 2016-08-08 | 2016-12-21 | 上海市政工程设计研究总院（集团）有限公司 | A kind of method for processing water supply depth |
| CN107188263A (en) * | 2017-07-19 | 2017-09-22 | 金寨益企学农业科技有限公司 | A kind of rice field wastewater discharge device |
| CN110330186A (en) * | 2019-07-23 | 2019-10-15 | 黄体校 | A kind of processing method suitable for greasy filth station greasy filth waste water and oil-gas field fracturing waste water |
| CN113185066A (en) * | 2021-06-07 | 2021-07-30 | 北洋桥(天津)科技有限公司 | Sewage treatment method for high-polymer high-salt oil extraction wastewater |
| CN116903149A (en) * | 2023-06-09 | 2023-10-20 | 德威华泰科技股份有限公司 | Method for treating biochemical tailwater using a coupled biochemical and ozone oxidation reactor device |
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