CN101857335B - Method for carrying out advanced treatment on super heavy oil sewage - Google Patents
Method for carrying out advanced treatment on super heavy oil sewage Download PDFInfo
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- CN101857335B CN101857335B CN2009100814795A CN200910081479A CN101857335B CN 101857335 B CN101857335 B CN 101857335B CN 2009100814795 A CN2009100814795 A CN 2009100814795A CN 200910081479 A CN200910081479 A CN 200910081479A CN 101857335 B CN101857335 B CN 101857335B
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- 239000010865 sewage Substances 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000000295 fuel oil Substances 0.000 title 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 82
- 238000004062 sedimentation Methods 0.000 claims abstract description 25
- 230000007062 hydrolysis Effects 0.000 claims abstract description 23
- 238000006460 hydrolysis reaction Methods 0.000 claims abstract description 23
- 238000006243 chemical reaction Methods 0.000 claims abstract description 17
- 230000020477 pH reduction Effects 0.000 claims abstract description 13
- 238000005345 coagulation Methods 0.000 claims abstract description 12
- 230000015271 coagulation Effects 0.000 claims abstract description 12
- 238000012544 monitoring process Methods 0.000 claims abstract description 5
- 239000010802 sludge Substances 0.000 claims description 29
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 14
- 239000001301 oxygen Substances 0.000 claims description 14
- 229910052760 oxygen Inorganic materials 0.000 claims description 14
- 238000005189 flocculation Methods 0.000 claims description 13
- 230000016615 flocculation Effects 0.000 claims description 13
- 239000004519 grease Substances 0.000 claims description 13
- 230000001105 regulatory effect Effects 0.000 claims description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 11
- 239000007787 solid Substances 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 8
- 238000007667 floating Methods 0.000 claims description 7
- 238000005086 pumping Methods 0.000 claims description 7
- 239000012752 auxiliary agent Substances 0.000 claims description 6
- 239000000706 filtrate Substances 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims description 3
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 abstract description 10
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 abstract description 6
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 abstract description 4
- 238000000926 separation method Methods 0.000 abstract description 4
- 239000003208 petroleum Substances 0.000 abstract description 3
- 238000005273 aeration Methods 0.000 abstract 2
- 239000003921 oil Substances 0.000 description 31
- 239000000126 substance Substances 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 8
- 230000015556 catabolic process Effects 0.000 description 6
- 230000000050 nutritive effect Effects 0.000 description 6
- 241000196324 Embryophyta Species 0.000 description 5
- 230000005484 gravity Effects 0.000 description 5
- 239000000725 suspension Substances 0.000 description 5
- 238000004065 wastewater treatment Methods 0.000 description 5
- 238000006731 degradation reaction Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 241000700141 Rotifera Species 0.000 description 3
- 241000589651 Zoogloea Species 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 229940061607 dibasic sodium phosphate Drugs 0.000 description 3
- BNIILDVGGAEEIG-UHFFFAOYSA-L disodium hydrogen phosphate Chemical compound [Na+].[Na+].OP([O-])([O-])=O BNIILDVGGAEEIG-UHFFFAOYSA-L 0.000 description 3
- 238000004945 emulsification Methods 0.000 description 3
- 238000000386 microscopy Methods 0.000 description 3
- 239000002957 persistent organic pollutant Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 235000001674 Agaricus brunnescens Nutrition 0.000 description 2
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- -1 flocculation Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000007764 o/w emulsion Substances 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 150000003384 small molecules Chemical class 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000005842 biochemical reaction Methods 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000012258 culturing Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007269 microbial metabolism Effects 0.000 description 1
- 238000006396 nitration reaction Methods 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000036284 oxygen consumption Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention relates to a method for carrying out advanced treatment on ultra-thick oil sewage, which comprises the following steps of enabling the ultra-thick oil sewage to enter a grid well, a horizontal flow sedimentation tank and a pump station water collecting tank and enter a sedimentation oil removal tank for treatment; the sewage automatically flows into the inclined plate oil separation device from the sedimentation oil removal tank, and the sewage automatically flows into the two-stage air floatation treatment device after the oil separation of the inclined plate; the air floatation effluent enters a first-stage hydrolysis acidification tank; the effluent of the first-stage hydrolysis acidification tank enters a CAST reaction tank; the effluent of the CAST reaction tank enters a secondary hydrolysis acidification tank; the effluent of the second-stage hydrolysis acidification tank enters an aeration biological filter; the effluent of the aeration biological filter tank enters a coagulation tank; the effluent of the coagulation tank enters a Lanmei inclined plate sedimentation tank; the effluent of the Lanmei inclined plate sedimentation tank enters a monitoring tank; obtaining the water outlet index after treatment: petroleum is less than or equal to 10mg/L, sulfide is less than or equal to 1mg/L, volatile phenol is less than or equal to 0.5mg/L, and CODCrLess than or equal to 100mg/L, ammonia nitrogen less than or equal to 15mg/L, pH value of 6-9, and SS less than or equal to 100 mg/L.
Description
Technical field
The present invention relates to the method that a kind of extremely-viscous crude sewage carries out advanced treatment.
Background technology
The existing sewage treatment technology route of oil refining enterprise is generally: oil refining sewerage → oil removal system → floatation system → A/O biochemical treatment system → efflux.For the refinery of processing viscous crude or ultra viscous crude, the wastewater property of its generation is extremely complicated: contained sump oil separates than great, difficult in high, the easy emulsification of Pollutant levels, difficult degradation, the water.If still adopt the old three kinds technological process of production to be difficult to guarantee the water quality reaching standard discharging, therefore, need take new treatment technology for refinery's sewage of processing viscous crude or ultra viscous crude.
Summary of the invention
The purpose of this invention is to provide and a kind ofly solve the condensed oil sewage difficult degradation, difficult separate, be prone to the method that the emulsive extremely-viscous crude sewage carries out advanced treatment, guarantee the sewage qualified discharge.
Technology of the present invention by grille well, flat flow settling bowl, pumping plant water collecting basin, one-level lift pump, sedimentation remove oil tank, inclined plate grease device, one-level air-floating apparatus, secondary air-floatation device, middle lift pump, one-stage hydrolysis souring tank, CAST reaction tank, CAST reaction tank water outlet lift pump, secondary hydrolysis acidification pool, BAF, Lan Mei skews the plate settling tank and coagulation basin connects and composes successively.Extremely-viscous crude sewage gets into grille well, the flat flow settling bowl carries out preliminary oil removing, gets into the pumping plant water collecting basin then, by the one-level lift pump sewage in the pumping plant water collecting basin is pumped into sedimentation and removes oil tank or regulating tank.When flooding quantity, water quality just often, sewage directly gets into sedimentation and removes oil tank, this jar is provided with constant high water outlet liquid level 16～18m, flow need not lifting all can realize gravity flowage; When flooding quantity greater than 600m
3During/h, open the regulating tank water intaking valve automatically, treat that being promoted to sedimentation through pump again after flooding velocity steadily removes oil tank entering flow through water inlet pipe flow feedback signal; When import water quality in-line meter shows that water quality is abominable, open the regulating tank water intaking valve, make sewage after regulating tank is handled, remove oil tank through pump lifting entering sedimentation more earlier and handle, alleviate the pressure of flow.
Sewage removes the oil tank gravity flow by sedimentation and gets into the inclined plate grease device, and sewage carries out breakdown of emulsion, flocculation, air supporting from flowing into two-stage air supporting processing unit behind the inclined plate grease, further removes oil in water emulsion and colloidal attitude suspended substance.High according to this sewage water inlet oleaginousness, and high this problem of emulsification degree, for strengthening oil removing, guarantee the smooth running of biological treatment section, adopt the series operation of two-stage air-float technology.Skeleton construction is set is: three layers are the inclined plate grease device, outlet oil-contg≤100mg/L; Two layers is the one-level air-floating apparatus, outlet oil-contg≤60mg/L; One deck is the secondary air-floatation device, outlet oil-contg≤20mg/L; Dosing: XN-FH1 flocculation agent host (solid) 0.06～0.18m
3/ h, XN-FH2 flocculation agent auxiliary agent (liquid) 0.12～0.24m
3/ h.
The air supporting water outlet gets into one-stage hydrolysis souring tank, processing parameter: dissolved oxygen DO≤0.2mg/L.
The water outlet of one-stage hydrolysis souring tank gets into the CAST reaction tank, processing parameter: return sludge ratio 20%,
Dissolved oxygen DO: biological section 0.2mg/L, the main reaction section 3～4mg/L of selecting, remove most organic, ammonia nitrogen and residual petroleum class in the water inlet, reduce S in the water inlet simultaneously
2-, phenol and prussiate.
The water outlet of CAST reaction tank gets into the secondary hydrolysis acidification pool, anaerobic activated sludge is housed, processing parameter in the pond: dissolved oxygen DO≤0.2mg/L.
The water outlet of secondary hydrolysis acidification pool gets into BAF, filtrate and aerobic biologic membrane is housed, processing parameter in the pond: dissolved oxygen DO:3～4mg/L, further reduce outlet water organic substance and ammonia nitrogen concentration, make sewage near or satisfy emission standard.
The BAF water outlet gets into coagulation basin, processing parameter: outlet ss suspended solid≤120mg/L;
The coagulation basin water outlet gets into blue U.S.A and skews the plate settling tank, processing parameter: outlet ss suspended solid≤100mg/L; Lan Mei skews the water outlet of plate settling tank and gets into monitoring pool, processing parameter: outlet COD
Cr≤100mg/L; Dosing: XN-FH2 flocculation agent auxiliary agent (liquid) 0.024～0.06m
3/ h.
It is the principle according to gravity separation that the sedimentation of materialization section removes oil tank, utilizes oil, water-mass density difference to separate oil removing.Full-automatic air supporting device is to blast the micro-bubble that produces in the water through air to adhere to each other with the suspended substance in the water, floats to the water surface by the buoyancy of bubble on together and realizes solid-liquid separation.
Biochemical part has mainly been used one-stage hydrolysis acidifying and CAST pond process combined, and water inlet through acidication, is a small molecules with the macromole organic pollutant degradation earlier, is beneficial to carrying out smoothly of CAST pond nitration reaction, reaches the purpose of removing ammonia nitrogen.
The secondary acidication combines with BAF, is small molecules with the macromole organic pollutant degradation further, is beneficial to carrying out smoothly of BAF pond biomembrane reaction, reaches the purpose that reduces outlet water organic substance and ammonia nitrogen concentration, makes it approaching or satisfy emission standard.
The water outlet unit of checking on comprises " coagulation+Lan Mei skews the plate settling tank+well of releasing ".Dosing coagulant and flocculation agent in settling tank, main biochemistry section organic pollutant colloid and the bioclastic that can not remove removed is with a small amount of COD of further removal
Cr, guarantee that water outlet is up to standard.
The effect of invention
The standard that reaches because of the sewage of handling with this device and processing condition is following:
| Name of product | Analysis project | Effluent index |
| Total draining | Petroleum-type | ≤10mg/L |
| Total draining | Sulfide | ≤1mg/L |
| Total draining | Volatile phenol | ≤0.5mg/L |
| Total draining | COD Cr | ≤100mg/L |
| Total draining | Ammonia nitrogen | ≤15mg/L |
| Total draining | PH value | 6-9 |
| Total draining | SS | ≤100mg/L |
Description of drawings
Fig. 1 extremely-viscous crude sewage carries out the process flow sheet of advanced treatment.
Wherein: 1, grille well 2, flat flow settling bowl 3, pumping plant water collecting basin 4, one-level lift pump 5, sedimentation skew plate settling tank 16, coagulation basin except that oil tank 6, inclined plate grease device 7, one-level air-floating apparatus 8, secondary air-floatation device 9, BAF 10, secondary hydrolysis acidification pool 11, CAST reaction tank water outlet lift pump 12, CAST reaction tank 13, one-stage hydrolysis acidulated pool 14, middle lift pump 15, Lan Mei
Embodiment
Technology of the present invention by grille well 1, flat flow settling bowl 2, pumping plant water collecting basin 3, one-level lift pump 4, sedimentation remove oil tank 5, inclined plate grease device 6, one-level air-floating apparatus 7, secondary air-floatation device 8, middle lift pump 14, one-stage hydrolysis souring tank 13, CAST reaction tank 12, CAST reaction tank water outlet lift pump 11, secondary hydrolysis acidification pool 10, BAF 9, Lan Mei skews plate settling tank 15 and coagulation basin 16 connects and composes successively.
Sedimentation removes oil tank:
, 10000m
3, skin is a cylindrical tank, in establish the suspension settlement oil eliminator, the suspension settlement oil eliminator is to connect cone under the right cylinder, sewage gets into the suspension oil eliminator and forms eddy flow.
Regulating tank:
, 10000m
3, skin is a cylindrical tank, boring.
Inclined plate grease device: WXH-300 type, Wuhan Jiang Yangshui engineering ltd.
One-level air-floating apparatus: CAF-320 type, the distant Genie et Environnement of Shenyang pine.
Secondary air-floatation device: SUPR-DAF300, Liaoning Huafu Environment Engineering Co., Ltd..
The one-stage hydrolysis souring tank:
, 5000m
3, 4, skin is a cylindrical tank, in to establish wadding be that active sludge provides the existence carrier.
CAST reaction tank: 48m * 16.4m * 6m, 8, the rectangle pond, the bottom is provided with aerating apparatus.
Secondary hydrolysis acidification pool: 51.2m * 8.9m * 7m, it is that active sludge provides the existence carrier that wadding is established in rectangle pond, bottom.
BAF: 6m * 6.5m * 6.5m, 12, the rectangle pond, bottom is provided with aerating apparatus, and spherical ceramic grain filter is equipped with in the middle layer.
Coagulation basin: 5.3m * 5.3m * 4.8m, square pond, in establish stirrer.
Lan Mei skews the plate settling tank, 42.8m * 11m * 4.8m, the rectangle pond, in establish many group swash plates.
Monitoring pool: 10m * 25m * 4.8m, the rectangle pond.
XN-FHI flocculation agent host (solid) and XN-FHII flocculation agent auxiliary agent (liquid) producer: the new glad green technology in Shaanxi development corporation, Ltd..
When flooding quantity, water quality basically just often, sewage can directly get into sedimentation and remove oil tank, this jar is provided with the about 16～18m of constant high water outlet liquid level, flow need not to promote and all can realize gravity flowage, a flow equalization after basic guarantee jar; When flooding quantity greater than 600m
3During/h, open the regulating tank water intaking valve automatically, treat that being promoted to sedimentation through pump again after flooding velocity steadily removes oil tank entering flow through water inlet pipe flow feedback signal; When showing that by import water quality in-line meter water quality is abominable, also can open the regulating tank water intaking valve through manual work, make sewage after regulating tank is handled, remove oil tank through pump lifting entering sedimentation more earlier and handle, to alleviate the pressure of flow.
Sewage removes the oil tank gravity flow by sedimentation and gets into the inclined plate grease device, and sewage carries out breakdown of emulsion, flocculation, air supporting from flowing into two-stage air supporting processing unit behind the inclined plate grease, further removes oil in water emulsion and colloidal attitude suspended substance.High according to this sewage water inlet oleaginousness, and high this problem of emulsification degree, for strengthening oil removing, guarantee the smooth running of biological treatment section, adopt the series operation of two-stage air-float technology.Skeleton construction is set is: three layers are the inclined plate grease device, outlet oil-contg≤100mg/L; Two layers is the one-level air-floating apparatus, outlet oil-contg≤60mg/L; One deck is the secondary air-floatation device, outlet oil-contg≤20mg/L; Dosing: XN-FH1 flocculation agent host (solid) 0.06～0.18m
3/ h, XN-FH2 flocculation agent auxiliary agent (liquid) 0.12～0.24m
3/ h.
The flotation water outlet gets into biochemical system; Comprise one-stage hydrolysis souring tank (DO≤0.2mg/L) and CAST biochemical reaction tank (return sludge ratio 20%; Dissolved oxygen DO: biological section 0.2mg/L, the main reaction section 3-4mg/L of selecting); Main most organic, ammonia nitrogen and residual petroleum class in the water inlet, the S in the reduction water inlet simultaneously of removing
2-, phenol and prussiate.
The CAST water outlet gets into smart biochemical treatment unit, comprises that (anaerobic activated sludge is equipped with in inside to the secondary hydrolysis acidification pool, dissolved oxygen DO≤0.2mg/L) and two parts of BAF (filtrate and aerobic biologic membrane are equipped with in inside, dissolved oxygen DO:3-4mg/L).Main purpose is further to reduce outlet water organic substance and ammonia nitrogen concentration, make its near or satisfy emission standard.
The BAF water outlet gets into the water outlet unit of checking on, and (outlet ss suspended solid≤120mg/L), Lan Mei skew plate settling tank (outlet ss suspended solid≤100mg/L) (export COD with monitoring pool to comprise coagulation basin
Cr≤100mg/L).Main purpose is as the water outlet unit of checking on, and guarantees that water outlet is up to standard, for later middle water reuse the stable high quality water source is provided simultaneously.
This device entry index:
| Name of product | Analysis project | Controlling index |
| Entry | COD Cr | ≤2500mg/L |
| Entry | Petroleum-type | ≤1000mg/L |
| Entry | Sulfide | ≤30mg/L |
| Entry | Volatile phenol | ≤80mg/L |
| Entry | Ammonia nitrogen | ≤150mg/L |
| Entry | PH value | 6-9 |
| Entry | SS | ≤3000mg/L |
This device effluent index:
| Name of product | Analysis project | Controlling index |
| Total draining | COD Cr | ≤100mg/L |
| Total draining | Petroleum-type | ≤10mg/L |
| Total draining | Sulfide | ≤1mg/L |
| Total draining | Volatile phenol | ≤0.5mg/L |
| Total draining | Ammonia nitrogen | ≤15mg/L |
| Total draining | PH value | 6-9 |
| Total draining | SS | ≤100mg/L |
The suspension settlement oil eliminator that sedimentation removes in the oil tank is to connect cone under the right cylinder, and sewage gets into the suspension oil eliminator and forms eddy flow.Since centrifugation density less than the oils of water entad radius be in the edge eddy flow greatly and come-up is put away by collection tank, and density greater than the material (like silt) of water entad radius be in the center eddy flow for a short time and sink to putting away by mud drainage slot.
Anaerobic activated sludge is cultivated and is divided into three phases:
Between pursuing, cultivates in the fs clear water
Purpose: introduce sewage (old wastewater treatment field effluxes water up to standard) and make mud propagation, increase sludge concentration.
To the old wastewater treatment field second pond of CAST pond roping mud, 100 tons of every pond ropings (concentration is 1500mg/L), every CAST pond volume 4000m
3Sludge concentration is 40mg/L.(Sodium phosphate, dibasic, cerelose, each dosage are 0.4 ton/month, irregularly), guarantee nutritive salt proportioning (BOD to add nutritive substance
5: N: P=100: 5: 1), culturing sludge begins.
Because cultivating initial stage sewage is that old wastewater treatment field effluxes water up to standard, water quality is better, and sludge concentration is too low, thereby oxygen consumption seldom; Cause the dissolved oxygen concentration in the pond higher, reach 7-9mg/L, reduce blasting time; The control dissolved oxygen is at 0.5～2mg/L, and this is that the oxygen supply is too much because this fashion of zoogloea does not form flocculent structure; The microbial metabolism activity is strengthened, and nutrition supply is not gone up and is made mud self produce oxidation, impels sludge aging.
The process initial-stage culture is after 13 days; CAST pond mud increases gradually, and the sludge concentration of each biochemistry pool is between 400-700mg/L, and settling ratio was about 8-17% in 30 minutes; Microscopy can be found mikrobes such as wheel animalcule, campanularian, visually can see the active sludge micro-floccule.
The low sludge loading of subordinate phase is cultivated domestication
Purpose: further improve sludge concentration, introduce the water outlet of old wastewater treatment field materialization section mud is tamed, make its water quality characteristics that adapts to the sewage of handling, thereby have the ability of handling specific sewage.
This stage has been taked the same footwork in active sludge cultivation and the acclimation method, i.e. water inlet, continuous drainage continuously, and active sludge does not efflux all and refluxes.(Sodium phosphate, dibasic, cerelose, each dosage are 0.4 ton/month, irregularly), guarantee nutritive salt proportioning (BOD to add nutritive substance
5: N: P=100: 5: 1), progressively improve sludge loading.Through cultivation domestication in 33 days; The sludge concentration of each biochemistry pool of CAST of biochemical section is between 1000-1800mg/L; 30 minutes sludge settling ratios are about 10-25%, and microscopy can be found multiple mushroom and protozoons such as campanularian, wheel animalcule, the zoogloea compact structure; Visually can see the active sludge flco, the mud performance takes a turn for the better day by day.
Phase III, high sludge loading was cultivated domestication
Purpose: sludge concentration reaches the ordinary production requirement, and old wastewater treatment field is out of service, and company's sewerage sewage and ultra viscous crude pretreating sewage all get into new water field.
The ultra viscous crude pretreating sewage amount of doping increases gradually, to improve the COD that goes into sewage
CrLoad, (Sodium phosphate, dibasic, cerelose, each dosage are 0.4 ton/month, irregularly), guarantee nutritive salt proportioning (BOD to add nutritive substance
5: N: P=100: 5: 1); Through cultivation domestication in 10 days, the sludge concentration of each biochemistry pool of CAST of biochemical section was between 1500-2500mg/L, and sludge settling ratio was about 10-25% in 30 minutes; Microscopy can be found multiple mushroom and protozoons such as campanularian, wheel animalcule; The zoogloea compact structure visually can be seen fine and close active sludge flco, and the mud performance is ripe.
Claims (1)
1. an extremely-viscous crude sewage carries out the method for advanced treatment; It is characterized in that: extremely-viscous crude sewage gets into grille well, the flat flow settling bowl carries out preliminary oil removing; Get into the pumping plant water collecting basin then, by the one-level lift pump sewage in the pumping plant water collecting basin pumped into sedimentation and remove oil tank or regulating tank, when flooding quantity, water quality just often; Sewage gets into sedimentation and removes oil tank, and this jar is provided with constant high water outlet liquid level 16～18m; When flooding quantity greater than 600m
3During/h, open the regulating tank water intaking valve automatically, treat that being promoted to sedimentation through pump again after flooding velocity steadily removes oil tank entering flow through water inlet pipe flow feedback signal; When showing that by import water quality in-line meter water quality is abominable, open the regulating tank water intaking valve, make sewage after regulating tank is handled, remove oil tank through pump lifting entering sedimentation more earlier and handle;
Sewage removes oil tank by sedimentation and flows automatically into the inclined plate grease device, and sewage is from flowing into two-stage air supporting treatment unit behind the inclined plate grease; The inclined plate grease device, outlet oil-contg≤100mg/L; The one-level air-floating apparatus, outlet oil-contg≤60mg/L; The secondary air-floatation device, outlet oil-contg≤20mg/L; Dosing: XN-FH1 flocculation agent host 0.06～0.18m
3/ h, XN-FH2 flocculation agent auxiliary agent 0.12～0.24m
3/ h;
The air supporting water outlet gets into one-stage hydrolysis souring tank, processing parameter: dissolved oxygen≤0.2mg/L;
The water outlet of one-stage hydrolysis souring tank gets into the CAST reaction tank, processing parameter: return sludge ratio 20%, dissolved oxygen: biological section 0.2mg/L, the main reaction section 3～4mg/L of selecting;
The water outlet of CAST reaction tank gets into the secondary hydrolysis acidification pool, anaerobic activated sludge is housed, processing parameter in the pond: dissolved oxygen≤0.2mg/L;
The water outlet of secondary hydrolysis acidification pool gets into BAF, filtrate and aerobic biologic membrane is housed, processing parameter in the pond: dissolved oxygen: 3～4mg/L;
The BAF water outlet gets into coagulation basin, processing parameter: outlet ss suspended solid≤120mg/L; The coagulation basin water outlet gets into blue U.S.A and skews the plate settling tank, processing parameter: outlet ss suspended solid≤100mg/L; Lan Mei skews the water outlet of plate settling tank and gets into monitoring pool, processing parameter: outlet COD
Cr≤100mg/L; Dosing: XN-FH2 flocculation agent auxiliary agent 0.024～0.06m
3/ h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100814795A CN101857335B (en) | 2009-04-08 | 2009-04-08 | Method for carrying out advanced treatment on super heavy oil sewage |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100814795A CN101857335B (en) | 2009-04-08 | 2009-04-08 | Method for carrying out advanced treatment on super heavy oil sewage |
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| CN101857335A CN101857335A (en) | 2010-10-13 |
| CN101857335B true CN101857335B (en) | 2012-03-07 |
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| CN103159373A (en) * | 2011-12-15 | 2013-06-19 | 中国石油天然气股份有限公司 | Inferior heavy oil refinery sewage treatment plant |
| CN102583884B (en) * | 2012-02-16 | 2013-09-11 | 北京科技大学 | Method for treating mixed industrial sewage in industrial park |
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| CN102653436B (en) * | 2012-06-01 | 2014-02-19 | 中冶华天南京工程技术有限公司 | Sewage reuse treatment system and process |
| CN103449674B (en) * | 2013-09-10 | 2015-09-02 | 北京京城环保股份有限公司 | A kind for the treatment of Technology for Petroleum Water Flooding applying granular diatomaceous earth |
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