CN102557296A - Method for treating well-flushing waste water in oilfield well site - Google Patents
Method for treating well-flushing waste water in oilfield well site Download PDFInfo
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- CN102557296A CN102557296A CN2011104466897A CN201110446689A CN102557296A CN 102557296 A CN102557296 A CN 102557296A CN 2011104466897 A CN2011104466897 A CN 2011104466897A CN 201110446689 A CN201110446689 A CN 201110446689A CN 102557296 A CN102557296 A CN 102557296A
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- waste water
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- wastewater disposal
- disposal basin
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Abstract
The invention relates to a method for treating well-flushing waste water in an oilfield well site. The method comprises the following steps: closing valve B, opening valve A, starting up a centrifugal pump, extracting waste water in a waste water pool, spraying out from a sprayer after being pressurized by the centrifugal pump, and adding a treating agent into the waste water pool at the same time; closing valve A after obvious floc is formed in the waste water pool, and standing until the floc precipitating completely; opening valve B, starting up the centrifugal pump, extracting the supernatant liquid and oxidizing in an ozone oxygenizer, filtering the oxidized water by a filter A and a filter B successively, and discharging the filtered water by valve C. The method provided by the invention realizes that the processes such as chemicals feeding, stirring, coagulating, and precipitating are performed out of the device, the supernatant liquid is oxidized in the ozone oxygenizer to wipe off the organic matters and chroma dissolved in the supernatant liquid, the oxidized water is fine filtered by passing through a secondary filter successively to wipe off tiny suspended matters, and the water quality of the treated water can reach the Standard of National Secondary Emission.
Description
Technical field
The present invention relates to the treatment process of well site, a kind of oil field well-flushing waste water, handle back water quality and can reach the national secondary emission standard.
Background technology
The pollutent composition that well site, oil field well-flushing waste water contains is complicated and more stable, and in a single day these pollutents get into ecological circulation will be to the edatope of locality, and water resource environment has caused bigger pollution and destruction.Because well site, oil field waste water has that generation is little, dispersion and discontinuity, reasonably disposes the important procedure that these well site waste water just become oilfield enterprise's management.At present, both at home and abroad about the processing mode of well site waste water comparatively commonly used be to centrally dispose or set up movable type (sledge-borne type) WWT equipment it is handled.But because the distribution of well site, oil field is more remote, road environment is abominable, and centralized collection is handled the potential safety hazard that has inconvenience and transportation.And existing portable Processing Equipment volume is excessive, is not easy to the transportation of well site road, and in the operation of equipment process, exists energy consumption height, operator are many, expense is high deficiency.
Summary of the invention
The purpose of this invention is to provide well site, a kind of oil field well-flushing waste water treatment process, this waste water treatment process can make the volume of treatment facility reduce greatly, is convenient to field conduct.
Well site, oil field of the present invention well-flushing waste water treatment process.The stirring of this technological process, coagulation, precipitation process are carried out in wastewater disposal basin, can reduce the volume of treatment facility greatly, reduce the energy consumption of equipment.In wastewater disposal basin, through the circulation of impeller pump waste water is stirred, make itself and the treatment agent thorough mixing that is added.In whipping process,, can control stirring intensity through the adjustment valve according to the difference that adds the treatment agent performance.When having obvious flco to form in the waste water, stop to stir.After treating that coagulating sedimentation is accomplished, through impeller pump the supernatant in the pond is evacuated in the ozone oxidation device and accomplishes oxidation, to remove SOM and colourity wherein.Ozone oxidation device inlet flow rate can be regulated through valve.Water after ozone oxidation gets into secondary filter successively and carries out fine filtering, to remove small suspended substance.Water after this art breading can reach the national secondary emission standard.
This technology collection stirring, oxidation, be filtered into one, realize processing well site, oil field well-flushing waste water.This technology helps field conduct, has reduced energy consumption and operator's quantity, effectively reduces running cost, and is significant for the ordinary production and the Sustainable development that ensure the oil field.
Description of drawings
Fig. 1 is well site, an oil field well-flushing waste water treatment process process flow sheet
Wherein, 1: wastewater disposal basin, 2: impeller pump, 3: valve B, 4: valve A, 5: shower nozzle, 6: under meter, 7: ozone oxidation device, 8: tensimeter A, 9: strainer A, 10: tensimeter B, 11: filter B, 12: valve C.
Embodiment
Be treated to example with certain oil field X261-4 well well-flushing waste water.
In Fig. 1, waste water is present in the wastewater disposal basin 1, prepares treatment agent according to the waste water quality and the water yield.Valve B3 is kept shut, open valve A4, start impeller pump 2, waste water from shower nozzle 5 ejections, is implemented waterpower and is stirred after the impeller pump pressurization in the extraction wastewater disposal basin, in stirring, in wastewater disposal basin, adds treatment agent.Impeller pump flow: 5m
3/ h, lift: 15m, power: 0.55KW.In the whipping process, according to the difference that adds the treatment agent performance, A4 adjusts stirring intensity through valve.After treating to have in the wastewater disposal basin obvious flco to form, stop to stir, close impeller pump 2 and valve A4, leave standstill and treat that the flco deposition fully in the wastewater disposal basin.Open valve B3, start impeller pump 2, extract in supernatant to the ozone oxidation device 7 and carry out oxidation, can regulate flow through valve B3.The ozone oxidation device is provided with under meter 6, ozone oxidation device flow: 5m
3/ h, the effective residence time: 60min, rising pipe flow velocity: 0.2m/s.Water after 7 oxidations of ozone oxidation device gets into strainer A9 successively, filter B 11 is carried out two-stage filtration, and strainer A9, filter B 11 are provided with tensimeter A8 and tensimeter B10; Water after the filtration can reach the national secondary emission standard, and C12 effluxes through valve.Strainer A9 flow: 5m
3/ h, specification: Φ 400 * 1500mm, filtering accuracy 20 μ m; Filter B 11 flows: 5m
3/ h, specification: Φ 400 * 1500mm, filtering accuracy 3 μ m.
Claims (1)
1. well site, oil field well-flushing waste water treatment process; It is characterized in that: waste water is present in the wastewater disposal basin (1), and valve B (3) is kept shut, and opens valve A (4); Start impeller pump (2); Waste water from shower nozzle (5) ejection, is implemented waterpower and is stirred after the impeller pump pressurization in the extraction wastewater disposal basin, in stirring, in wastewater disposal basin, adds treatment agent; In the whipping process, through valve A (4) adjustment stirring intensity, treat to have in the wastewater disposal basin obvious flco to form after, stop to stir, close impeller pump (2) and valve A (4), leave standstill and treat that the flco deposition is fully in the wastewater disposal basin; Open valve B (3), start impeller pump (2), extract in supernatant to the ozone oxidation device (7) and carry out oxidation, regulate flow through valve B (3); Ozone oxidation device flow: 5m
3/ h, the effective residence time: 60min, rising pipe flow velocity: 0.2m/s; Water after ozone oxidation device (7) oxidation gets into strainer A (9) successively, filter B (11) is carried out two-stage filtration, and the water after the filtration reaches the national secondary emission standard, effluxes through valve C (12); Strainer A (9) flow: 5m
3/ h, specification: Φ 400 * 1500mm, filtering accuracy 20 μ m; Filter B (11) flow: 5m
3/ h, specification: Φ 400 * 1500mm, filtering accuracy 3 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104466897A CN102557296A (en) | 2011-12-28 | 2011-12-28 | Method for treating well-flushing waste water in oilfield well site |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104466897A CN102557296A (en) | 2011-12-28 | 2011-12-28 | Method for treating well-flushing waste water in oilfield well site |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102557296A true CN102557296A (en) | 2012-07-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104466897A Pending CN102557296A (en) | 2011-12-28 | 2011-12-28 | Method for treating well-flushing waste water in oilfield well site |
Country Status (1)
| Country | Link |
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| CN (1) | CN102557296A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070056913A1 (en) * | 2005-08-19 | 2007-03-15 | Burt David C | Portable oil field waste water treatment and recycling system |
| CN101125717A (en) * | 2006-08-15 | 2008-02-20 | 中国石油天然气股份有限公司 | Ternary combination flooding produced liquid oil-containing sewage treatment technique |
| CN101481186A (en) * | 2009-02-16 | 2009-07-15 | 中国石化集团石油工程西南有限公司油田工程服务分公司 | Process and apparatus for treating oil-gas field wastewater |
| CN201305522Y (en) * | 2008-10-28 | 2009-09-09 | 北京桑德环境工程有限公司 | Processing system for realizing the recycling of coking waste water |
-
2011
- 2011-12-28 CN CN2011104466897A patent/CN102557296A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070056913A1 (en) * | 2005-08-19 | 2007-03-15 | Burt David C | Portable oil field waste water treatment and recycling system |
| CN101125717A (en) * | 2006-08-15 | 2008-02-20 | 中国石油天然气股份有限公司 | Ternary combination flooding produced liquid oil-containing sewage treatment technique |
| CN201305522Y (en) * | 2008-10-28 | 2009-09-09 | 北京桑德环境工程有限公司 | Processing system for realizing the recycling of coking waste water |
| CN101481186A (en) * | 2009-02-16 | 2009-07-15 | 中国石化集团石油工程西南有限公司油田工程服务分公司 | Process and apparatus for treating oil-gas field wastewater |
Non-Patent Citations (1)
| Title |
|---|
| 马锐侠等: "含油废水综合处理技术研究", 《石化技术与应用》 * |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120711 |