CN104817230A - Biochemical combination treatment method of refinery wastewater - Google Patents
Biochemical combination treatment method of refinery wastewater Download PDFInfo
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- CN104817230A CN104817230A CN201510179979.8A CN201510179979A CN104817230A CN 104817230 A CN104817230 A CN 104817230A CN 201510179979 A CN201510179979 A CN 201510179979A CN 104817230 A CN104817230 A CN 104817230A
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- biochemical combination
- biofilm filtration
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- 239000002351 wastewater Substances 0.000 title abstract description 6
- 238000001914 filtration Methods 0.000 claims abstract description 17
- 238000006460 hydrolysis reaction Methods 0.000 claims abstract description 17
- 230000020477 pH reduction Effects 0.000 claims abstract description 16
- 239000010802 sludge Substances 0.000 claims abstract description 14
- 239000010865 sewage Substances 0.000 claims abstract description 13
- 238000001556 precipitation Methods 0.000 claims abstract description 11
- 230000000694 effects Effects 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 30
- 239000000945 filler Substances 0.000 claims description 27
- 238000000034 method Methods 0.000 claims description 22
- 238000007670 refining Methods 0.000 claims description 16
- 238000004062 sedimentation Methods 0.000 claims description 14
- AHEWZZJEDQVLOP-UHFFFAOYSA-N Bromobimane Chemical compound BrCC1=C(C)C(=O)N2N1C(C)=C(C)C2=O AHEWZZJEDQVLOP-UHFFFAOYSA-N 0.000 claims description 7
- 239000004698 Polyethylene (PE) Substances 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 238000007667 floating Methods 0.000 claims description 7
- -1 polyethylene Polymers 0.000 claims description 7
- 229920000573 polyethylene Polymers 0.000 claims description 7
- 241000894006 Bacteria Species 0.000 claims description 4
- 238000005188 flotation Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000004952 Polyamide Substances 0.000 claims description 3
- 244000052616 bacterial pathogens Species 0.000 claims description 3
- 238000006065 biodegradation reaction Methods 0.000 claims description 3
- 229920002647 polyamide Polymers 0.000 claims description 3
- 239000011528 polyamide (building material) Substances 0.000 claims description 3
- 230000000717 retained Effects 0.000 claims description 3
- 229920000098 polyolefin Polymers 0.000 claims description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Natural products OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 abstract description 10
- 239000001301 oxygen Substances 0.000 abstract description 9
- 229910052760 oxygen Inorganic materials 0.000 abstract description 9
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 abstract description 9
- CVTZKFWZDBJAHE-UHFFFAOYSA-N [N].N Chemical compound [N].N CVTZKFWZDBJAHE-UHFFFAOYSA-N 0.000 abstract description 8
- 239000000126 substance Substances 0.000 abstract description 8
- 150000002989 phenols Chemical class 0.000 abstract description 2
- 238000002955 isolation Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 19
- 230000000813 microbial Effects 0.000 description 7
- 230000015556 catabolic process Effects 0.000 description 4
- 230000004059 degradation Effects 0.000 description 4
- 238000006731 degradation reaction Methods 0.000 description 4
- 244000005700 microbiome Species 0.000 description 4
- 239000002028 Biomass Substances 0.000 description 3
- 231100000614 Poison Toxicity 0.000 description 3
- 238000005273 aeration Methods 0.000 description 3
- 239000000969 carrier Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 241001120493 Arene Species 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000002906 microbiologic Effects 0.000 description 2
- 238000006396 nitration reaction Methods 0.000 description 2
- 238000002203 pretreatment Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- 230000037250 Clearance Effects 0.000 description 1
- 230000035683 MEAN RESIDENCE TIME Effects 0.000 description 1
- 241001148470 aerobic bacillus Species 0.000 description 1
- 230000003851 biochemical process Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000035512 clearance Effects 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 230000001473 noxious Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000010734 process oil Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 238000005429 turbidity Methods 0.000 description 1
Abstract
The invention discloses a biochemical combination treatment method of refinery wastewater. The method is used for treating the refinery wastewater after oil isolation and air floatation pretreatment. The treatment method comprises the steps of biological adsorption, precipitation and biofilm filtration biochemical combination treatment which are performed in sequence, and is characterized by also comprising a step of anaerobic hydrolysis acidification treatment performed between the biological adsorption treatment as well as precipitation and the biofilm filtration treatment and a step of secondary precipitation after the biofilm filtration treatment, wherein the sludge part at the bottom of a secondary precipitation tank is repeatedly subjected to the biofilm filtration treatment. The method has strong instantaneous impact resistance load capacity, and can effectively solve the problem of poor denitrification effect caused by system impact due to volatilization of harmful substances such as phenols. The main indexes of discharged sewage after treatment by the method are that the chemical oxygen demand (mg/l) is smaller than 60, the amount of ammonia nitrogen (in terms of N) (mg/l) is smaller than 15, and the primary discharge requirement of Integrated Wastewater Discharge Standard of the People's Republic of China is met.
Description
Technical field
The present invention relates to sewage disposal, particularly relate to a kind of biochemical combination treatment method of refinery water.
Background technology
The oil refining sewerage quantity discharged that petrochemical enterprise produces in the processes such as oil product refining, Product processing is large, and Pollutant levels are high and kind is many and assorted, mostly not easily degrade, and cause variation water quality large, intractability is high.External existing Waste water treatment has used multiple water purification technology, and technical process is long, and effluent quality is good, and reusing sewage rate is high, but its processing costs is also very high.It is adopt chemical oxygen demand (COD) (COD), oils, ammonia nitrogen and the suspended substance in upflow type aerating biological filter removal oil refining sewerage that domestic existing oil refining sewerage bioremediation mainly contains following three kinds: one, Be very effective, but its nitrated biomembranous formation is slow; Two is adopt the rapid biofilm of floating stuffing contact oxidation technology and upgrade microbial film quickly, high to the clearance of phenol, oil, sulfide, but affects larger by variation water quality on the removal of ammonia nitrogen; Three is turbidity, ammonia nitrogen, chemical oxygen demand (COD) (COD) and volatile phenols that employing membrane bioreactor effectively removes in oil refining sewerage, but needs pre-treatment and need to clean with serious pollution microbial film, and running cost is higher.General applying biological absorption-biofilm filtration biochemistry combines Treating Municipal Sewage at present, but there is not yet the biochemical combined treatment oil refining sewerage of applying biological absorption-biofilm filtration.
Summary of the invention
Technical problem to be solved by this invention is the defect making up above-mentioned prior art, provides a kind of biochemical combination treatment method of refinery water.
Technical problem of the present invention is solved by the following technical programs.
The biochemical combination treatment method of this refinery water, for the treatment of through the pretreated oil refining sewerage of the gentle flotation of oil removal, treatment process comprises the biochemical combined treatment of the biological adsorption → precipitation → biofilm filtration carried out successively.
The feature of the biochemical combination treatment method of this refinery water is:
After being also included in biological adsorption process and precipitation with biofilm filtration process before the anaerobic hydrolysis-acidification process carried out, and the secondary sedimentation carried out after biofilm filtration process, and biofilm filtration process is repeated to the sludge part bottom secondary sedimentation basins.
Technical problem of the present invention is solved by following further technical scheme.
Described anaerobic hydrolysis-acidification process adopts the anaerobic hydrolysis acidification tank being provided with 3 D elastic filler, the aerobic-anaerobic microbe of the high density under the condition of drainage flow and anaerobic hydrolysis acidification tank anoxic and in sewage is under the effect of hydrolysis-acidifying bacterium, the organism be retained down is adsorbed on 3 D elastic filler surface in a large number, the biomass of filler adheres is high, and the microorganism growth of filling surface attachment is constantly bred, form thicker microbial film gradually, the organism of wherein difficult for biological degradation is changed into the organism of readily biodegradable, greatly improve biodegradability and the solvability of sewage, can effectively solve because the poisonous arene material such as volatile phenol to cause the problem of denitrification effect difference to system shock simultaneously, be beneficial to follow-up aerobic treatment, processing cost can be reduced, improve processing efficiency.The microbial film formed on the surface of 3 D elastic filler carrier, along with microbiological degradation constantly comes off, regenerates, upgrades.
Technical problem of the present invention is solved by following further technical scheme.
The described anaerobic hydrolysis acidification tank being provided with 3 D elastic filler descends the anaerobic hydrolysis acidification tank two ends of thread elastic filler being whipped by two-layer framework fixing spatially elastic filler with knotting method thereon.
Described thread elastic filler to be proportion be 0.93 polyolefins and polyamide material.
The filling ratio of described thread elastic filler in anaerobic hydrolysis acidification tank is 45% ~ 55%.
Described biological adsorption adopts the supporting general biological adsorption tank having independently sludge recirculation system, its sludge absorption ability is strong, larger molecular organics in energy absorption effluent, the granule sludge of higher concentration is had in biological adsorption pond, there is very strong anti-temporary impact portative power and the surge capability to hazardous and noxious substances, described biological adsorption process for the larger molecular organics that continues to process oil removal gentle flotation pre-treatment and do not process completely and oil, for good environment is created in subsequent biochemical process.
Described precipitation is that the oil refining sewerage after biological adsorption process is precipitated 1.0h ~ 1.5h in settling tank.
Described biofilm filtration process is moving bed biological film reaction (Moving Bed Biofilm Reactor, initialism is MBBR) process, adopt the General Mobile bed biofilm reactor being provided with columniform polyethylene floating stuffing, the filling ratio of polyethylene floating stuffing in MBBR is 30% ~ 40%, packing density is close to water, during aeration and water be complete admixture, the environment of microorganism growth is gas, liquid, Gu three-phase, filler as under the castering action of carrier current in aeration and reactor of microorganism growth in fluidized state, collision in water and shearing action, make air bubble more tiny, add the utilization ratio of oxygen.The biomass of filler adheres is high, and microbial film on filler is thicker, all has different biological species inside and outside each polyethylene carrier, some anerobes of growth inside or double oxygen bacterium, outside is aerobic bacteria, nitration reaction and anti-nitration reaction is existed simultaneously, thus improves treatment effect.
Described secondary sedimentation is that the oil refining sewerage after moving-bed biofilm reaction treatment is precipitated at least 4h in secondary sedimentation basins, and the sludge part bottom secondary sedimentation basins being back to the feed-water end re-treatment of MBBR, return sludge ratio is at most 50%.
The present invention's beneficial effect is compared with prior art:
Waste water treatment method of the present invention has very strong anti-temporary impact portative power, can effectively solve because the toxic substances such as volatile phenol to cause the problem of denitrification effect difference to system shock.The leading indicator of the sewage effluent after the inventive method process: chemical oxygen demand (COD) (COD) (mg/l) < 60, ammonia nitrogen (in N) (mg/l) < 15, meets the first grade discharging requirement of " People's Republic of China's integrated wastewater discharge standard " (GB8978-1996).
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation being provided with the hydrolysis acidification pool of 3 D elastic filler of the specific embodiment of the invention.
Embodiment
Below in conjunction with embodiment, the present invention will be described.
A kind of biochemical combination treatment method of refinery water, for the treatment of certain factory of oil refinery through the pretreated oil refining sewerage of the gentle flotation of oil removal, its water quality leading indicator: chemical oxygen demand (COD) (COD) (mg/l) is 300 ~ 500, ammonia nitrogen (in N) (mg/l) is 40 ~ 70, the mean residence time for the treatment of sewage in reactor and hydraulic detention time (Hydraulic Retention Time, initialism is HRT) are about 56h.
This embodiment has following treatment step successively:
Biological adsorption process: adopt the supporting general biological adsorption tank having independently sludge recirculation system, HRT is 0.8 h; Dissolved oxygen (Dissolved Oxygen, initialism is DO) (mg/l) is 0.5 ~ 0.8, the COD(mg/l of water outlet) be 250 ~ 450;
Precipitation: the oil refining sewerage after biological adsorption process is precipitated 1.2h in settling tank; DO(mg/l) < 0.5.
Anaerobic hydrolysis-acidification process: adopt the anaerobic hydrolysis acidification tank 2 being provided with 3 D elastic filler as shown in drawings, it proportion is by its upper and lower two-layer framework the fixing spatially elastic filler 5 of two ends whipping of the polyamide filament of 0.93 with knotting method, aeration tube 4 is arranged on below lower floor's framework, the filling ratio of 3 D elastic filler 5 in anaerobic hydrolysis acidification tank 2 is 50%, water outlet after oil refining sewerage after biological adsorption process precipitates in settling tank enters anaerobic hydrolysis acidification tank 2 from water-in 1, be hydrolyzed acidifying, HRT is 14h, DO(mg/l) < 0.5.The aerobic-anaerobic microbe of the high density under the condition of drainage flow and anaerobic hydrolysis acidification tank 2 anoxic and in sewage is under the effect of hydrolysis-acidifying bacterium, the organism be retained down is adsorbed on three-dimensional suspended type elastic filler 5 surface in a large number, the biomass that filler 5 adheres to is high, and the microorganism growth of surface attachment is constantly bred, form thicker microbial film gradually, the organism of wherein difficult for biological degradation is changed into the organism of readily biodegradable, greatly improve biodegradability and the solvability of sewage, can effectively solve because the poisonous arene material such as volatile phenol to cause the problem of denitrification effect difference to system shock simultaneously, be beneficial to follow-up aerobic treatment, processing cost can be reduced, improve processing efficiency.The microbial film that three-dimensional suspended type elastic filler 5 surface is formed, along with microbiological degradation, constantly comes off, regenerates, upgrades.Be 200 ~ 300 through the hydrolysis stage of anaerobic digestion process and the COD of sewage (mg/l) of souring stage, flow into adopt to be provided with the MBBR of columniform polyethylene floating stuffing from water outlet 3 and carry out moving-bed biofilm reaction treatment.
Moving-bed biofilm reaction treatment: adopt the General Mobile bed biofilm reactor being provided with columniform polyethylene floating stuffing, HRT is 40h; DO(mg/l) > 2, filler filling ratio is in the reactor 30%, the COD(mg/l of water outlet) < 60, ammonia nitrogen (in N) (mg/l) < 15;
Secondary sedimentation; Oil refining sewerage after moving-bed biofilm reaction treatment is precipitated at least 4h in secondary sedimentation basins, and the sludge part bottom secondary sedimentation basins is back to the feed-water end re-treatment of MBBR, return sludge ratio is 50%.
The leading indicator of the sewage effluent after the process of this embodiment: COD(mg/l) < 60mg/L, ammonia nitrogen (in N) (mg/l) < 15, meets the first grade discharging requirement of " People's Republic of China's integrated wastewater discharge standard " (GB8978-1996).
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention; make some equivalent alternative or obvious modification without departing from the inventive concept of the premise; and performance or purposes identical, all should be considered as belonging to the scope of patent protection that the present invention is determined by submitted to claims.
Claims (10)
1. a biochemical combination treatment method for refinery water, for the treatment of through the pretreated oil refining sewerage of the gentle flotation of oil removal, treatment process comprises the biochemical combined treatment of the biological adsorption → precipitation → biofilm filtration carried out successively, it is characterized in that:
After being also included in biological adsorption process and precipitation with biofilm filtration process before the anaerobic hydrolysis-acidification process carried out, and the secondary sedimentation carried out after biofilm filtration process, and biofilm filtration process is repeated to the sludge part bottom secondary sedimentation basins.
2. the biochemical combination treatment method of refinery water as claimed in claim 1, is characterized in that:
Described anaerobic hydrolysis-acidification process adopts the anaerobic hydrolysis acidification tank being provided with 3 D elastic filler, the aerobic-anaerobic microbe of the high density under the condition of drainage flow and anaerobic hydrolysis acidification tank anoxic and in sewage is under the effect of hydrolysis-acidifying bacterium, the organism be retained down is adsorbed on 3 D elastic filler surface in a large number, changes the organism of readily biodegradable into.
3. the biochemical combination treatment method of refinery water as claimed in claim 1 or 2, is characterized in that:
The described anaerobic hydrolysis acidification tank being provided with 3 D elastic filler descends the anaerobic hydrolysis acidification tank two ends of thread elastic filler being whipped by two-layer framework fixing spatially elastic filler with knotting method thereon.
4. the biochemical combination treatment method of refinery water as claimed in claim 3, is characterized in that:
Described thread elastic filler to be proportion be 0.93 polyolefins and polyamide material.
5. the biochemical combination treatment method of refinery water as claimed in claim 3, is characterized in that:
The filling ratio of described thread elastic filler in anaerobic hydrolysis acidification tank is 45% ~ 55%.
6. the biochemical combination treatment method of refinery water as claimed in claim 1, is characterized in that:
Described precipitation is that the oil refining sewerage after biological adsorption process is precipitated 1.0h ~ 1.5h in settling tank.
7. the biochemical combination treatment method of refinery water as claimed in claim 1, is characterized in that:
Described biofilm filtration process is moving-bed biofilm reaction treatment, adopts the General Mobile bed biofilm reactor being provided with columniform polyethylene floating stuffing.
8. the biochemical combination treatment method of refinery water as claimed in claim 7, is characterized in that:
The filling ratio of described polyethylene floating stuffing in MBBR is 30% ~ 40%.
9. the biochemical combination treatment method of refinery water as claimed in claim 1, is characterized in that:
Described secondary sedimentation is that the oil refining sewerage after moving-bed biofilm reaction treatment is precipitated at least 4h in secondary sedimentation basins.
10. the biochemical combination treatment method of refinery water as claimed in claim 1, is characterized in that:
Described biofilm filtration process is repeated to the sludge part bottom secondary sedimentation basins, be by secondary sedimentation basins bottom sludge part be back to the feed-water end re-treatment of MBBR, return sludge ratio is at most 50%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510179979.8A CN104817230A (en) | 2015-04-16 | 2015-04-16 | Biochemical combination treatment method of refinery wastewater |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510179979.8A CN104817230A (en) | 2015-04-16 | 2015-04-16 | Biochemical combination treatment method of refinery wastewater |
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| CN104817230A true CN104817230A (en) | 2015-08-05 |
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| CN201510179979.8A Pending CN104817230A (en) | 2015-04-16 | 2015-04-16 | Biochemical combination treatment method of refinery wastewater |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101148293A (en) * | 2006-09-21 | 2008-03-26 | 江苏博大环保股份有限公司 | Microorganism advanced treatment for oil refining waste water |
| CN101269903A (en) * | 2008-04-25 | 2008-09-24 | 北京世纪华扬能源科技有限公司 | Further advanced treatment technique and apparatus for sewage water of oil refining |
| CN101870544A (en) * | 2010-07-16 | 2010-10-27 | 大庆市新中瑞环保有限公司 | Method for treating petroleum refining waste water |
| CN102249499A (en) * | 2011-07-13 | 2011-11-23 | 达斯玛环境科技（北京）有限公司 | Method for biochemically treating and discharging refinery wastewater within controlling index of national standard |
-
2015
- 2015-04-16 CN CN201510179979.8A patent/CN104817230A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101148293A (en) * | 2006-09-21 | 2008-03-26 | 江苏博大环保股份有限公司 | Microorganism advanced treatment for oil refining waste water |
| CN101269903A (en) * | 2008-04-25 | 2008-09-24 | 北京世纪华扬能源科技有限公司 | Further advanced treatment technique and apparatus for sewage water of oil refining |
| CN101870544A (en) * | 2010-07-16 | 2010-10-27 | 大庆市新中瑞环保有限公司 | Method for treating petroleum refining waste water |
| CN102249499A (en) * | 2011-07-13 | 2011-11-23 | 达斯玛环境科技（北京）有限公司 | Method for biochemically treating and discharging refinery wastewater within controlling index of national standard |
Non-Patent Citations (3)
| Title |
|---|
| 吉化集团公司 等: "《污水处理工》", 31 July 2004 * |
| 张昭睿 等: "《小清河综合治理成效评价与对策研究》", 31 May 2003 * |
| 李亚新: "《活性污泥法理论与技术》", 31 August 2007 * |
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Application publication date: 20150805 |