CN104787923A - Movable skidded treatment method of oil field sewage - Google Patents
Movable skidded treatment method of oil field sewage Download PDFInfo
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- CN104787923A CN104787923A CN201510093971.XA CN201510093971A CN104787923A CN 104787923 A CN104787923 A CN 104787923A CN 201510093971 A CN201510093971 A CN 201510093971A CN 104787923 A CN104787923 A CN 104787923A
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Abstract
The invention relates to a movable skidded treatment method of oil field sewage, and belongs to an oil field sewage treatment technology. According to the present invention, based on the existing oil and gas field technology requirements, the pH, the hardness, the suspended solid SS, the oil content, the viscosity and other indexes are comprehensively considered, and the effluent indicator meets the index requirements of entering of the united station sewage position or water injection position; and according to the apparatus, an external conveying tank, an efficient chemical precipitation tank, an air flotation fine filter, a pressure or centrifugation dewatering device, and a dewatering liquid returning storage tank are connected through pipelines on the vehicle.
Description
Technical field: the present invention relates to a kind of disposing polluted water in oil technology, the especially movable skid-mounted formula treatment process of oilfield sewage.
Background technology: well fracturing is one of major measure of oilfield stimulation, additive in fracturing liquid comprises many types, main containing guanidine glue, tensio-active agent, petroleum-type product and various additive in fracturing outlet liquid, have the features such as high COD, high stability, intractability is large.
At present in these Technology of Sewage of process, mostly adopt and concentrate process of building a station, investment is comparatively large, supporting unreasonable, waste resource.
Summary of the invention: the object of this invention is to provide fielded system and set up the movable skid-mounted formula treatment process of fireballing oilfield sewage, for current oil-gas field technical need, consider the indexs such as pH, hardness, suspended solid SS, oleaginousness, viscosity, effluent index meets can enter joint station sewage hilllock or water filling hilllock index request, on automobile, be connected to outer defeated tank, efficient chemical setting tank, air supporting secondary filter, pressure or centrifugal dehumidifier by pipeline, dehydration liquid returns storage tank; Additive in fracturing liquid comprises following kind, tackifier: that does pressure break thickening has guanidine glue, hydroxypropyl guar gum (HPG), Natvosol (HEC) etc.; Gel breaker: thickness fracturing liquid can be made controllably to be degraded to the wash that can return discharge from crack, and typical gel breaker is persulphate, hydrogen peroxide etc.Sterilant: the stability that both can keep glue surface, can stop again the growth of bacterium in stratum.Buffer reagent: in order to control the pH value required by specific linking agent and crosslinking time, comprise the mixture of sodium bicarbonate, fumaric acid, sodium hydrogen phosphate and sodium phosphate, soda powder, sodium-acetate etc.Clay stabilizer: Repone K, calcium chloride etc.Flow improver: comprise anionic polyacrylamide etc.In addition, tensio-active agent, pH value control agent and linking agent etc. are also had.
Its technical process is: first fracturing outlet liquid enters efficient chemical setting tank, with special efficient medicament (rubber breaker, flocculation agent, coagulant aids), after abundant reaction, enter contact flocculation room and returned sluge realizes contact flocculation, then solid-liquid separation is realized in high-efficiency sedimentation room, water outlet enters air supporting secondary filter after carrying out necessary water quality regulation or flocculation, and the suspended substance of water outlet is reduced to 10-20mg/L from 200-300mg/L, and petroleum content significantly reduces; Settling pocket thickened sludge partial reflux, part drains into sludge dewatering unit; In air supporting secondary filter, by dissolved air flotation and media filtration, complete advanced treatment of wastewater, remove suspended substance and petroleum-type further, effluent index reaches design requirements, that is: water-quality guideline can reach Ph6.5-7.5; Hardness 81 mg/L; Suspended substance 8 mg/L; Oleaginousness 1.8 mg/L; Viscosity 1,2mpa/s; Salinity 13000 mg/L.
Efficient chemical setting tank is a kind of High-efficient Water processing reaction equipment, by sludge circulation, improves reaction conditions, improves reaction efficiency.In the process circulated and precipitate, the mud 120gt/L of high density fully contacts with the organism in water, is removed by absorption, cosedimentation.Utilize built-in inclined tube, solid precipitation is faster, and separation accuracy is less than 5 microns; Spoil disposal water ratio is low; Settling tank, coagulation needed for cooperation, flocculation, softening medicament, can synchronously realize removing suspended substance and organism, reduces hardness and (remove scale-forming ion, comprise iron, calcium, magnesium, barium etc.), be particularly suitable for the fracturing outlet liquid process of big yield, high solid load (hardness and suspended substance).
Air supporting secondary filter: first efficient chemical setting tank water enters zone of action, fully contact with the dissolved air water containing a large amount of about 30 μm diameter microbubbles, microbubble is combined with suspended substance, completes solid-liquid separation subsequently in flotation separation zone; Scum silica frost Ji Zhaqu by slag scraper strike off at any time enter slag chute discharge system, small or that proportion is slightly large suspended substance enters the meticulous filter material layer of diameter 0.1 ~ 0.2mm with current, suspended substance is retained further, and water is discharged at catchment area run by gravity by filter material layer, completes treating processes.
Air dissolved pump, from filter rear water box or the water suction of water outlet pipeline, discharges in zone of action after dissolved air; When filter material layer retains after suspended substance reaches capacity, carry out backwash to filtrate, adopt the backwash step sequence of " draining → air purge → air water combine wash → water backwash+surface sweep washing ", backwash draining is discharged by drainage tray.
Meaning of the present invention is: the present invention integrates the functions such as homogeneous, dosing, softening, flocculation, air supporting, filtration; The design of device sled blocking, take up an area little, convenient transport, can adjust each functional module parameter according to pilot experiment result, also can carry out Function Extension to device flexibly, can carry out amplification produce by client's actual demand scale; After treatment, water-quality guideline can reach Ph6.5-7.5; Hardness 81 mg/L; Suspended substance 8 mg/L; Oleaginousness 1.8 mg/L; Viscosity 1,2mpa/s; Salinity 13000 mg/L
Accompanying drawing illustrates: Fig. 1 is oilfield sewage movable skid-mounted formula treatment unit schematic diagram
Fig. 2 is the structural representation of efficient chemical setting tank
Fig. 3 is the structural representation of air supporting secondary filter
Embodiment: embodiment 1, the present invention, on automobile, are connected to outer defeated tank, efficient chemical setting tank, air supporting secondary filter, pressure or centrifugal dehumidifier by pipeline, dehydration liquid returns storage tank.
Embodiment 2, technical process of the present invention are: first fracturing outlet liquid enters efficient chemical setting tank, after fully reacting with special efficient medicament (rubber breaker, flocculation agent, coagulant aids), enter contact flocculation room and returned sluge realizes contact flocculation, then solid-liquid separation is realized in high-efficiency sedimentation room, water outlet enters air supporting secondary filter after carrying out necessary water quality regulation or flocculation, the suspended substance of water outlet is reduced to 10-20mg/L from 200-300mg/L, and petroleum content significantly reduces; Settling pocket thickened sludge partial reflux, part drains into sludge dewatering unit; In air supporting secondary filter, by dissolved air flotation and media filtration, complete advanced treatment of wastewater, remove suspended substance and petroleum-type further, effluent index reaches design requirements.
Embodiment 3, efficient chemical setting tank are a kind of High-efficient Water processing reaction equipment, by sludge circulation, improve reaction conditions, improve reaction efficiency.In the process circulated and precipitate, the mud 120gt/L of high density fully contacts with the organism in water, is removed by absorption, cosedimentation; Utilize built-in inclined tube, solid precipitation is faster, and separation accuracy is less than 5 microns; Spoil disposal water ratio is low; Settling tank, coagulation needed for cooperation, flocculation, softening medicament, can synchronously realize removing suspended substance and organism, reduces hardness and (remove scale-forming ion, comprise iron, calcium, magnesium, barium etc.), be particularly suitable for the fracturing outlet liquid process of big yield, high solid load (hardness and suspended substance).
Embodiment 4, air supporting secondary filter: first efficient chemical setting tank water enters zone of action, fully contact with the dissolved air water containing a large amount of about 30 μm diameter microbubbles, microbubble is combined with suspended substance, completes solid-liquid separation subsequently in flotation separation zone; Scum silica frost Ji Zhaqu by slag scraper strike off at any time enter slag chute discharge system, small or that proportion is slightly large suspended substance enters the meticulous filter material layer of diameter 0.1 ~ 0.2mm with current, suspended substance is retained further, and water is discharged at catchment area run by gravity by filter material layer, completes treating processes; Air dissolved pump, from filter rear water box or the water suction of water outlet pipeline, discharges in zone of action after dissolved air; When filter material layer retains after suspended substance reaches capacity, carry out backwash to filtrate, adopt the backwash step sequence of " draining → air purge → air water combine wash → water backwash+surface sweep washing ", backwash draining is discharged by drainage tray.
Water-quality guideline after embodiment 5, process of the present invention reaches Ph6.5-7.5; Hardness 81 mg/L; Suspended substance 8 mg/L; Oleaginousness 1.8 mg/L; Viscosity 1,2mpa/s; Salinity 13000 mg/L.
Claims (5)
1. the movable skid-mounted formula treatment unit of oilfield sewage, is characterized in that: it is on automobile, is connected to outer defeated tank, efficient chemical setting tank, air supporting secondary filter, pressure or centrifugal dehumidifier, dehydration liquid returns storage tank by pipeline.
2. the treatment process of the movable skid-mounted formula treatment unit of oilfield sewage described in claim 1, it is characterized in that: first fracturing outlet liquid enters efficient chemical setting tank, after fully reacting with special efficient medicament (rubber breaker, flocculation agent, coagulant aids), enter contact flocculation room and returned sluge realizes contact flocculation, then solid-liquid separation is realized in high-efficiency sedimentation room, water outlet enters air supporting secondary filter after carrying out necessary water quality regulation or flocculation, the suspended substance of water outlet is reduced to 10-20mg/L from 200-300mg/L, and petroleum content significantly reduces; Settling pocket thickened sludge partial reflux, part drains into sludge dewatering unit; In air supporting secondary filter, by dissolved air flotation and media filtration, complete advanced treatment of wastewater, remove suspended substance and petroleum-type further, effluent index reaches design requirements.
3. the treatment process of the movable skid-mounted formula treatment unit of oilfield sewage described in claim 1 or 2, it is characterized in that: efficient chemical setting tank is a kind of High-efficient Water processing reaction equipment, pass through sludge circulation, improve reaction conditions, improve reaction efficiency, in the process circulated and precipitate, the mud 120gt/L of high density fully contacts with the organism in water, is removed by absorption, cosedimentation; Utilize built-in inclined tube, solid precipitation is faster, and separation accuracy is less than 5 microns; Spoil disposal water ratio is low; Settling tank, coagulation needed for cooperation, flocculation, softening medicament, can synchronously realize removing suspended substance and organism, reduces hardness and (remove scale-forming ion, comprise iron, calcium, magnesium, barium etc.), be particularly suitable for the fracturing outlet liquid process of big yield, high solid load (hardness and suspended substance).
4. the treatment process of the movable skid-mounted formula treatment unit of oilfield sewage described in claim 1 or 2, it is characterized in that: air supporting secondary filter: first efficient chemical setting tank water enters zone of action, fully contact with the dissolved air water containing a large amount of about 30 μm diameter microbubbles, microbubble is combined with suspended substance, completes solid-liquid separation subsequently in flotation separation zone; Scum silica frost Ji Zhaqu by slag scraper strike off at any time enter slag chute discharge system, small or that proportion is slightly large suspended substance enters the meticulous filter material layer of diameter 0.1 ~ 0.2mm with current, suspended substance is retained further, and water is discharged at catchment area run by gravity by filter material layer, completes treating processes; Air dissolved pump, from filter rear water box or the water suction of water outlet pipeline, discharges in zone of action after dissolved air; When filter material layer retains after suspended substance reaches capacity, carry out backwash to filtrate, adopt the backwash step sequence of " draining → air purge → air water combine wash → water backwash+surface sweep washing ", backwash draining is discharged by drainage tray.
5. the treatment process of the movable skid-mounted formula treatment unit of oilfield sewage described in claim 1 or 2, is characterized in that: the water-quality guideline after process reaches Ph6.5-7.5; Hardness 81 mg/L; Suspended substance 8 mg/L; Oleaginousness 1.8 mg/L; Viscosity 1,2mpa/s; Salinity 13000 mg/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510093971.XA CN104787923B (en) | 2015-03-03 | 2015-03-03 | Oilfield sewage movable skid-mounted formula processing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510093971.XA CN104787923B (en) | 2015-03-03 | 2015-03-03 | Oilfield sewage movable skid-mounted formula processing method |
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| CN104787923A true CN104787923A (en) | 2015-07-22 |
| CN104787923B CN104787923B (en) | 2016-08-24 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105731577A (en) * | 2016-03-29 | 2016-07-06 | 湖北中油科昊机械制造有限公司 | Novel sewage treatment purification and drying unit |
| CN106241985A (en) * | 2016-08-23 | 2016-12-21 | 无锡西玖环保科技有限公司 | A kind of skid-mounted type may move coagulative precipitation device |
| CN106430742A (en) * | 2016-12-15 | 2017-02-22 | 南京中船绿洲环保有限公司 | Method for pretreating petroleum fracturing liquid wastewater |
| CN107352688A (en) * | 2017-08-01 | 2017-11-17 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | The processing unit and method that electric flocculation processing water flco separation and hardness reduce |
| CN110240328A (en) * | 2019-07-19 | 2019-09-17 | 西安富仕兴环保科技有限公司 | A skid-mounted sewage integrated high-efficiency treatment equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1339409A (en) * | 2001-08-22 | 2002-03-13 | 盘锦市华意环境工程有限公司 | Condensed oil waste water deep treating and reusing technology |
| CN101054244A (en) * | 2007-03-14 | 2007-10-17 | 安东石油技术（集团）有限公司 | Process for treating sewage of oil field |
| US20090236281A1 (en) * | 2006-09-01 | 2009-09-24 | Anticline Disposal, Llc | System and method for treating produced water |
| US8097163B1 (en) * | 2006-04-06 | 2012-01-17 | Produced Water Development, Llc | Purification of oil field production water for beneficial use |
| CN103351072A (en) * | 2013-07-31 | 2013-10-16 | 庆华集团新疆和丰能源化工有限公司 | Treatment process and treatment system for oil sand oil mining sewage |
-
2015
- 2015-03-03 CN CN201510093971.XA patent/CN104787923B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1339409A (en) * | 2001-08-22 | 2002-03-13 | 盘锦市华意环境工程有限公司 | Condensed oil waste water deep treating and reusing technology |
| US8097163B1 (en) * | 2006-04-06 | 2012-01-17 | Produced Water Development, Llc | Purification of oil field production water for beneficial use |
| US20090236281A1 (en) * | 2006-09-01 | 2009-09-24 | Anticline Disposal, Llc | System and method for treating produced water |
| CN101054244A (en) * | 2007-03-14 | 2007-10-17 | 安东石油技术（集团）有限公司 | Process for treating sewage of oil field |
| CN103351072A (en) * | 2013-07-31 | 2013-10-16 | 庆华集团新疆和丰能源化工有限公司 | Treatment process and treatment system for oil sand oil mining sewage |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105731577A (en) * | 2016-03-29 | 2016-07-06 | 湖北中油科昊机械制造有限公司 | Novel sewage treatment purification and drying unit |
| CN106241985A (en) * | 2016-08-23 | 2016-12-21 | 无锡西玖环保科技有限公司 | A kind of skid-mounted type may move coagulative precipitation device |
| CN106430742A (en) * | 2016-12-15 | 2017-02-22 | 南京中船绿洲环保有限公司 | Method for pretreating petroleum fracturing liquid wastewater |
| CN107352688A (en) * | 2017-08-01 | 2017-11-17 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | The processing unit and method that electric flocculation processing water flco separation and hardness reduce |
| CN110240328A (en) * | 2019-07-19 | 2019-09-17 | 西安富仕兴环保科技有限公司 | A skid-mounted sewage integrated high-efficiency treatment equipment |
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| Publication number | Publication date |
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| CN104787923B (en) | 2016-08-24 |
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