CN202529944U - Inferior heavy oil refinery sewage treatment plant - Google Patents
Inferior heavy oil refinery sewage treatment plant Download PDFInfo
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- CN202529944U CN202529944U CN2011205235630U CN201120523563U CN202529944U CN 202529944 U CN202529944 U CN 202529944U CN 2011205235630 U CN2011205235630 U CN 2011205235630U CN 201120523563 U CN201120523563 U CN 201120523563U CN 202529944 U CN202529944 U CN 202529944U
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- tank
- treatment system
- pond
- air
- anaerobic hydrolysis
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- 239000000295 fuel oil Substances 0.000 title claims abstract description 22
- 239000010865 sewage Substances 0.000 title abstract description 23
- 239000003921 oil Substances 0.000 claims abstract description 30
- 238000004062 sedimentation Methods 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 10
- 239000010802 sludge Substances 0.000 claims abstract description 9
- 230000007062 hydrolysis Effects 0.000 claims abstract description 7
- 238000006460 hydrolysis reaction Methods 0.000 claims abstract description 7
- 230000020477 pH reduction Effects 0.000 claims abstract description 7
- 239000004519 grease Substances 0.000 claims description 10
- 239000002699 waste material Substances 0.000 claims description 7
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 239000002351 wastewater Substances 0.000 abstract description 12
- 238000005273 aeration Methods 0.000 abstract description 7
- 239000003344 environmental pollutant Substances 0.000 abstract description 2
- 231100000719 pollutant Toxicity 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 28
- 230000000694 effects Effects 0.000 description 6
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 5
- 239000000839 emulsion Substances 0.000 description 5
- 239000002957 persistent organic pollutant Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000000701 coagulant Substances 0.000 description 4
- 238000004945 emulsification Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 239000007764 o/w emulsion Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000005189 flocculation Methods 0.000 description 2
- 230000016615 flocculation Effects 0.000 description 2
- 239000011499 joint compound Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000008186 active pharmaceutical agent Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000011001 backwashing Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- -1 flocculation Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 238000010525 oxidative degradation reaction Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The utility model relates to an inferior heavy oil refinery sewage treatment device; the device consists of a physicochemical treatment system and a biochemical treatment system, wherein the physicochemical treatment system consists of an adjusting oil removal tank, a settling oil removal tank, an inclined plate oil separation tank, a primary dissolved air floatation treatment tank and a secondary dissolved air floatation treatment tank which are sequentially connected in series; the biochemical treatment system is formed by sequentially connecting a primary anaerobic hydrolysis acidification tank, a circulating activated sludge process tank, a secondary anaerobic hydrolysis acidification tank, an aeration biological filter and a Lanmeila sedimentation tank in series; the second-stage dissolved air floatation treatment tank of the physicochemical treatment system is connected with the first-stage anaerobic hydrolysis acidification tank of the biochemical treatment system. The indexes of the discharged pollutants in the sewage treatment of the device meet the national Integrated wastewater discharge Standard (GB 8978-1996).
Description
Technical field
The utility model relates to a kind of inferior heavy oil refinery waste disposal plant
Background technology
In the residual petroleum resource of the whole world 70% is heavy oil, heavy oil will become Future in China main take over resource.The inferior heavy oil processing ratio of China's Petrochemical Enterprises strengthens year by year; A series of environmental issues have been produced; The adaptability to changes that mainly shows as existing wastewater treatment facility is not enough; Be difficult to realize the stably reaching standard discharging, form great environmental safety hidden danger etc., bring immense pressure for the environment protection of inferior heavy oil processing enterprise.If deal with improperly, environmental issue becomes " bottleneck " of restriction inferior heavy oil processing refinery's Sustainable development possibly.
The inferior heavy oil feedstock property is abominable, be representative with high saliferous, high-sulfur nitrogen, high impurity, high API degree, so its refinery sewage quality is very abominable, belongs to high oil-containing; High emulsification, high COD, high ammonia nitrogen; High sulfide, the organic pollutant composition is complicated, poisonous, the organic sewage of difficult for biological degradation.Handle inferior heavy oil refinery sewage if adopt " advection (swash plate) oil trap-(two-stage) air supporting-aeration and biological pond-secondary sedimentation basins (sand filter) " technology of conventional refinery sewage; " oil removal-air supporting " materialization section can't satisfy the oily water separation condition, water outlet pollutant load superelevation; Cause impact to " aeration tank " biochemical section; Cause the mikrobe mass mortality and lose processing power; Cause the severe overweight of water outlet COD, petroleum-type, ammonia nitrogen, sulfide, can't satisfy " national sewage comprehensive emission standard " primary standard in (GB8978-1996).
Liaohe River petro-chemical corporation of CNPC is the inferior heavy oil processing base of present domestic maximum, is main raw material with viscous crude, ultra viscous crude, import high-sulfur oils inferior, Venezuela's extra heavy oil, and problem of environmental pollution is very responsive.Since 2007, along with the surge of inferior heavy oil amount of finish, the refinery sewage quantity is unprecedented soaring, and pollutent is formed complicated more, and the materialization section of raw waste water field, biochemical section all receive serious impact, thereby finally cause externally discharged waste water to exceed standard.According to the characteristics of inferior heavy oil refinery sewage, on materilization freatment method is selected, must strengthen the removal of oil removing and non-solubility pollutent, for biochemical treatment provides good water quality; On biochemical processing method is selected, must possess multinomial functions such as the improvement of saprobiont degradation property, COD removal and denitrogenation.Externally discharged waste water will be upgraded on the basis of primary standard in (GB8978-1996) satisfying country's " integrated wastewater discharge standard ", and newly " integrated wastewater discharge standard " (DB21/1627-2008) to reach Liaoning Province.
The utility model content
The utility model purpose provides a kind of inferior heavy oil refinery waste disposal plant, and each item pollutent index that makes externally discharged waste water satisfies country's " integrated wastewater discharge standard " comprehensively, and newly " integrated wastewater discharge standard " (DB21/1627-2008) primary standard and Liaoning Province in (GB8978-1996).
The described inferior heavy oil refinery of the utility model waste disposal plant is made up of materialization treatment system and biochemical treatment system, and the materialization treatment system is removed oil tank by regulating, sedimentation is composed in series except that oil tank, inclined plate grease pond, one-level air-dissolving air-float treating pond, secondary air-dissolving air-float treating pond successively; Biochemical treatment system is composed in series by one-level anaerobic hydrolysis-acidification jar, circulating type active sludge method pond, secondary anaerobic hydrolysis acidification pool, BAF, Lan Meila settling tank successively; The secondary air-dissolving air-float treating pond of materialization treatment system is connected with the one-level anaerobic hydrolysis-acidification jar of biochemical treatment system.
The technical process and the principle of the utility model are following:
The materialization treatment system:
Inferior heavy oil refinery sewage is compiled by pipeline and promote to get into regulate removes oil tank, adjustment sewage pH value between 6.5-8.5, utilize gravity settling effect removal (recovery) oil slick, dispersed oil, suspended solids (Suspend Solid, SS).
Regulate and remove oil tank water outlet entering sedimentation, utilize the gravity settling effect further to remove petroleum-type and SS except that oil tank.If this sewage emulsification is serious, this sewage mixes with emulsion splitter before the entering sedimentation removes oil tank, utilizes chemical demulsification and gravity settling effect to remove oil in water emulsion, for follow-up inclined plate grease pond, the pneumatically supported processing of two-stage DAF provide water quality preferably.
Sedimentation removes the oil tank water outlet from flowing into the inclined plate grease pond, and inclined plate grease is used " shallow-layer " come-up principle, main residue oil slick and the dispersed oil of removing in (recovery) water body.If this sewage emulsification is serious, this sewage mixes with emulsion splitter before getting into the inclined plate grease pond, strengthens and removes oil in water emulsion.Increasing inclined plate grease during materialization is handled helps improving follow-up DAF air supporting treatment effect and reduces running cost.
The water outlet of inclined plate grease device is carried out breakdown of emulsion, flocculation, air supporting from flowing into two-stage DAF air supporting treatment unit, further removes oil in water emulsion and colloidal attitude suspended substance; For strengthening oil removing, guarantee the smooth running of biological treatment section, adopt the series operation of two-stage DAF air-float technology.
Biochemical treatment system:
After inferior heavy oil processing sewage is handled through materialization; Most petroleum-type pollutent (comprising oil slick, dispersed oil and emulsification wet goods) and SS are removed; The principal feature of biochemical treatment section water inlet is that COD and ammonia-nitrogen content are high; Exist the hard-degraded substance total amount higher relatively, must be combined with treatment process targetedly.
The pre-treatment of one-level anaerobic hydrolysis-acidification as biochemical treatment at first passed through in biochemical section water inlet; With the chain rupture of macromole Persistent organic pollutants is small molecules; Improve volatile acid (VFA) concentration of sewage, the total amount of minimizing bio-refractory pollutent, improve Biodegradability of Wastewater (BOD
5/ COD, B/C).
The water outlet of one-level anaerobic hydrolysis-acidification gets into the CAST pond, accomplishes most of organic removal at this, removes ammonia nitrogen and total nitrogen through synchronous nitration-nitrated retroaction simultaneously.It is theoretical that CAST is based on synchronous nitration-denitrification; A kind of improved sequencing batch active sludge (SBR) sewage treatment process that has biological selector and phosphorus removal functional; Key property is in technological process, not establish under the condition of anoxic mix stages; Carry out nitrification and denitrification efficiently, thereby reach the purpose that the degree of depth is denitrogenated.
After sewage was handled through the CAST pond, easily biodegradable organics is fully degraded, but still residual certain Persistent organic pollutants; Water outlet B/C is lower than very; Influence follow-up biochemical treatment effect,, the secondary anaerobic acidication is set behind the CAST pond again for improving Biodegradability of Wastewater.The secondary anaerobic acidication can make the further denitrogenation of incomplete denitrifying NOx-N in the CAST water outlet, prevents the nitrate nitrogen accumulation, further decomposes residual Persistent organic pollutants simultaneously.
Behind the secondary anaerobic acidication, the biochemical of water outlet is improved, and gets into the BAF pond then, removes residual COD, BOD
5, pollutent index such as ammonia nitrogen, BAF pool process principle is in the filter tank, to load particulate filter, the filter material surface apposition growth microbial film, the inner aeration in filter tank, effluent stream through the time, utilize that the strong oxidative degradation ability of high-concentration biological film purifies sewage on the filtrate.
BAF pond water outlet gets into the Lan Meila settling tank, and Lan Meila settling tank main purpose is as the water outlet unit of checking on, and guarantees that water outlet is up to standard.The Lan Meila settling tank utilizes shallow layer precipitating theoretical, adopts the lateral flow form, and water (flow) direction and solids precipitation direction are vertical relation, and noiseless each other, sedimentation effect is better.Organic pollutant colloid and bioclastic that main removal biochemical treatment can not be removed are with a small amount of COD of further removal and SS.Each item pollutent index that Lan Mei skews the water outlet of plate settling tank satisfies " national sewage comprehensive emission standard ", and newly " integrated wastewater discharge standard " (DB21/1627-2008) primary standard and Liaoning Province in (GB8978-1996).
Description of drawings
Fig. 1 inferior heavy oil refinery waste disposal plant schematic flow sheet.
Embodiment
Inferior heavy oil refinery waste disposal plant of the present invention is made up of materialization treatment system and biochemical treatment system; The materialization treatment system is by regulating except that oil tank, sedimentation remove oil tank, inclined plate grease pond, one-level air-dissolving air-float treating pond, (Dissloved Air Floatation DAF) is composed in series secondary air-dissolving air-float treating pond successively; Biochemical treatment system is by one-level anaerobic hydrolysis-acidification jar, circulating type active sludge method (Cyclic Activated Sludge Technology; CAST) pond, secondary anaerobic hydrolysis acidification pool, BAF (Biological Aerated Filter, BAF), the Lan Meila settling tank is composed in series successively; The secondary air-dissolving air-float treating pond of materialization treatment system is connected with the one-level anaerobic hydrolysis-acidification jar of biochemical treatment system.
Processing parameter is following:
Regulate and remove 1 in oil tank, volume is 10000m
3, interior jar is oil, water, mud three-phase cyclone separator, effective hydraulic detention time (HRT) of single jar is all above 12hr.
Sedimentation removes each 1 in oil tank, and volume is 10000m
3, interior jar is oil, water, mud three-phase cyclone separator, effective hydraulic detention time (HRT) of single jar is all above 12hr; Emulsion splitter dosage 30-40mg/L.
4 in inclined plate grease pond, HRT is more than the 1.5hr; Emulsion splitter dosage 30-40mg/L.
2 SUPR-DAF air supporting machines are adopted in one-level air supporting, and HRT is 22min, dissolved air water reflux ratio 30%-50%, vapour-liquid ratio 15%-30%, air dissolving system operating pressure 0.3-0.5MPa.Coagulant charging quantity 50-75mg/L; Coagulant aids dosage 2.0-3.0mg/L.
Secondary air-floatation adopts 2 NPF-500 type DAF air supporting machines, dissolved air water reflux ratio 20%-30%, air dissolving system operating pressure 0.3-0.5MPa.Coagulant charging quantity 50-75mg/L; Coagulant aids dosage 2.0-3.0mg/L.
4 in one-level anaerobic hydrolysis-acidification jar, total useful volume 20000m
3Effectively HRT surpasses 30hr; Keep dissolved oxygen (DO) in the tank body at 0.3-0.5mg/L; More than the interior sludge concentration 3000mg/L of jar.
Totally 8 in CAST pond is moved 6, single seat CAST pond useful volume 4500m
3, each operational cycle is 5hr, comprises into water 1hr, aeration 2hr, standing sedimentation 1hr, strains water 1hr; Sludge concentration maintains more than the 3000mg/L in the pond, and 1 periodic duty in every CAST pond is discharged and occupied the sewage of imitating volume 1/10.
Totally 1 of secondary hydrolysis acidification pool, effectively HRT is 12hr, and sludge concentration is between 2000-3000mg/L, and DO is below 0.5mg/L.
The top water inlet is adopted, the operation scheme of bottom aeration and water outlet in totally 10 in BAF pond.BAF operation filtering velocity 1.53m/h, effective HRT are about 2.0hr, filtration area 390m
2, aeration GWR 4-6:1; Backwashing period is 4-8 days.
The Lan Meila settling tank is made up of 2 groups of flocculation basins and settling tank, and effectively HRT is about 4.0hr.
Claims (1)
1. inferior heavy oil refinery waste disposal plant; Be made up of materialization treatment system and biochemical treatment system, it is characterized in that: the materialization treatment system is removed oil tank by regulating, sedimentation is composed in series except that oil tank, inclined plate grease pond, one-level air-dissolving air-float treating pond, secondary air-dissolving air-float treating pond successively; Biochemical treatment system is composed in series by one-level anaerobic hydrolysis-acidification jar, circulating type active sludge method pond, secondary anaerobic hydrolysis acidification pool, BAF, Lan Meila settling tank successively; The secondary air-dissolving air-float treating pond of materialization treatment system is connected with the one-level anaerobic hydrolysis-acidification jar of biochemical treatment system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205235630U CN202529944U (en) | 2011-12-15 | 2011-12-15 | Inferior heavy oil refinery sewage treatment plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205235630U CN202529944U (en) | 2011-12-15 | 2011-12-15 | Inferior heavy oil refinery sewage treatment plant |
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| Publication Number | Publication Date |
|---|---|
| CN202529944U true CN202529944U (en) | 2012-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205235630U Expired - Lifetime CN202529944U (en) | 2011-12-15 | 2011-12-15 | Inferior heavy oil refinery sewage treatment plant |
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| Country | Link |
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| CN (1) | CN202529944U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110902875A (en) * | 2019-11-19 | 2020-03-24 | 西安威尔电子有限责任公司 | Oil-gas field produced water treatment system and method based on ozone air floatation device |
| CN113943087A (en) * | 2021-11-22 | 2022-01-18 | 导洁(北京)环境科技有限公司 | Treatment method of high-salinity high-phosphorus high-ammonia nitrogen organic wastewater |
-
2011
- 2011-12-15 CN CN2011205235630U patent/CN202529944U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110902875A (en) * | 2019-11-19 | 2020-03-24 | 西安威尔电子有限责任公司 | Oil-gas field produced water treatment system and method based on ozone air floatation device |
| CN113943087A (en) * | 2021-11-22 | 2022-01-18 | 导洁(北京)环境科技有限公司 | Treatment method of high-salinity high-phosphorus high-ammonia nitrogen organic wastewater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121114 |