CN100526239C - Deep treatment technique of heavy crude heat extraction sewage for high pressure boiler - Google Patents
Deep treatment technique of heavy crude heat extraction sewage for high pressure boiler Download PDFInfo
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- CN100526239C CN100526239C CNB2007100165659A CN200710016565A CN100526239C CN 100526239 C CN100526239 C CN 100526239C CN B2007100165659 A CNB2007100165659 A CN B2007100165659A CN 200710016565 A CN200710016565 A CN 200710016565A CN 100526239 C CN100526239 C CN 100526239C
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Abstract
A deep processing process for the sewage from the heavy oil thermal recovery, which is used in a high pressure boiler comprises that the sewage from the heavy oil thermal recovery flows into a buffer tank; through sterilization, filtration, ultra-filtration, a reverse osmosis water supplying pump and a reverse osmosis device, the sewage is transmitted to the high pressure boiler for the application. The oil content of sewage from the heavy oil thermal recovery is less than 15mg/l by an air floating pre-biochemical unit from the buffer tank, and the water content is less than 1mg/l; after entering into a deoxygenation sedimentation unit, the suspending substance content in the processed effluent is less than 20mg/l and the dissolved oxygen is less than or equal to 0.5mg/l; then after being processed by an ultraviolet sterilization unit, the sewage is pumped into a multi-medium filter, the oil content in the processed effluent is less than 0.1mg/l and the suspending substance content is less than 5mg/l; after entering into an active carbon filter, the sewage is pumped into an ultra-filtration unit, the oil content in the processed effluent is 0mg/l and the turbidity is less than 0.5NTU; the effluent is pumped into a low pressure reverse osmosis device by the reverse osmosis water supplying pump, which is under the control of a 0.6-0.8MPa working pressure, the processed water reaches the water use standard of the high pressure boiler.
Description
One, technical field
The present invention relates to sewage disposal, particularly a kind of advanced treatment process that is used for the heavy crude heat extraction sewage of high-duty boiler.
Two, background technology
In the viscous oil recovery process, produce a large amount of oily(waste)waters, if with reuse high pressure injection steam boiler after these heavy crude heat extraction sewage advanced treatment; not only save the clear water resource; the protection environment, and realize the condensed oil sewage recycling, have great economic benefit and social benefit.Yet, condensed oil sewage has the water temperature height, characteristics such as emulsification is serious, traditional treatment process is to add chemical agents such as emulsion splitter, flocculation agent to carry out oil removing, suspended substance, silicon-dioxide, dissolved oxygen and fall salinity at present, and this traditional treatment process is difficult to reach the standard that the vapour high-duty boiler uses of annotating.Chinese patent application number: 200410020414.7 disclose " a kind of condensed oil sewage is handled reuse thermal recovery boiler water supply process ", what adopt is the treatment process of " at first adding the reverse-phase emulsifier middle sump oil that dewaters; next adds coagulating agent and coagulant aids is removed residue oil in water emulsion and suspended substance in the sewage; add magnesium salts and liquid oxidatively sodium then and soften and handle the calcium ions and magnesium ions of removing in the sewage; then carry out coarse filtration and smart filtration, add chemical agent at last and carry out deoxygenation ".The shortcoming and defect of these treatment process is: 1. added a large amount of emulsion splitters, coagulating agent, coagulant aids in the process of sewage degrease and suspended substance, in the softening treating processes of sewage, magnesium salts and liquid oxidatively sodium have been added, in oxygen removal process, add chemical agent, easily caused secondary pollution; 2. most of operation adopts mechanical process in the flow process, and floor space is big, complex process, treatment effect is not good, cost is high.
Three, summary of the invention
The shortcoming that the objective of the invention is both to overcome or avoid existing in the above-mentioned prior art or not enough and a kind of advanced treatment process that is used for the heavy crude heat extraction sewage of high-duty boiler is provided; adopt technologies such as buffering, biochemistry, multi-medium filtering, ultrafiltration, the reverse osmosis of low pressure high pressure, flash distillation; improve treatment effect effectively; economize on resources the protection environment.
The advanced treatment process that is used for the heavy crude heat extraction sewage of high-duty boiler of the present invention, comprise that heavy crude heat extraction sewage enters surge tank, through sterilization, filtered water pump, filter, the ultrafiltration water pump, ultrafiltration, the reverse osmosis working shaft, reverse osmosis unit to high pressure steam boiler uses, described heavy crude heat extraction sewage makes oil content of wastewater＜15mg/L by surge tank through the pre-biochemical unit of air supporting, enter biochemical unit and fully contact processing back water outlet oleaginousness＜1mg/L with microbial film, enter the deoxygenation sedimentation unit, handle back water outlet suspension content＜20mg/L, dissolved oxygen≤0.5mg/L, pump into more medium filter by filtering working shaft after entering the ultraviolet-sterilization cell processing again, handle back water outlet oleaginousness＜0.1mg/L, suspension content＜5mg/L, after entering the charcoal filter processing, after pumping into ultra filtration unit and handle by the ultrafiltration water pump, the water outlet oleaginousness is 0mg/L, turbidity＜0.5NTU, pumping into the low pressure reverse osmosis device by the reverse osmosis working shaft handles, operating pressure control with 0.6-0.8MPa is handled, reach the high pressure steam boiler water supply standard, produce the water rate of recovery and reach 60%-80%, enter high pressure steam boiler and use.
Wherein, the dense water of described 20%-40% after the low pressure reverse osmosis device is handled also can pump into the high pressure reverse osmosis unit by high-pressure hydraulic pump and handle, and enters high pressure steam boiler after the processing and uses, and product water adds yield and reaches 50%-60%.The described dense water of 40%-50% that enters after the high pressure reverse osmosis unit is handled enters flash distillation and handles, and enters high pressure steam boiler after the processing and uses, and produces the water rate of recovery and reaches 70%-80%, and the 20%-30% condensed water is used for salt manufacturing, recycles as byproduct.Described heavy crude heat extraction sewage enters before the surge tank, and its high temperature that has is incorporated in the flash distillation treatment step by the energy recovery use device, and the heat energy when reducing flash distillation is supplied with.
The present invention has following advantage or public good effect compared with prior art:
1, the present invention adopts the method oil removing that no medicine air supporting, biochemistry combine, and does not add medicament, reclaims crude oil and can use, and it is few to produce sludge quantity, all can handle for the heavy crude heat extraction sewage of salinity 8000-15000mg/L.
2, pretreatment technology of the present invention is better to removal effects such as oil, suspended substance, COD, bacteriums, has guaranteed the long-term stability operation of follow-up reverse osmosis process.The entire treatment technological operation is simple, working cost is low, high-duty boiler re-injection requirement is satisfied in water outlet.
3, the present invention has advantages such as treatment process is reasonable, simple to operate, treatment effect stable, non-secondary pollution with physics and bioremediation and membrane processing method comprehensive utilization.
What 4, sterilization was adopted among the present invention is ultraviolet sterilization apparatus, and this device has that sterilizing power is strong, and the life-span is long, stable and reliable operation, its germ-killing efficiency 〉=99%.
5, utilize present method can effectively improve the product water recovery degree of condensed oil sewage treatment system, the rate of recovery 〉=95%, the condensed water salt manufacturing that produces in the desalination process is reclaimed as byproduct, can be used as industrial salt, realizes zero liquid discharge.
Four, description of drawings
Accompanying drawing is a process flow diagram of the present invention.
Five, embodiment
Consult accompanying drawing, a kind of advanced treatment process that is used for the heavy crude heat extraction sewage of high-duty boiler, comprise that heavy crude heat extraction sewage enters surge tank, through sterilization, filtered water pump, filter, the ultrafiltration water pump, ultrafiltration, the reverse osmosis working shaft, reverse osmosis unit to high pressure steam boiler uses, heavy crude heat extraction sewage makes oil content of wastewater＜15mg/L by surge tank 2 through the pre-biochemical unit 3 of air supporting, enter biochemical unit 4 and fully contact processing back water outlet oleaginousness＜1mg/L with microbial film, enter deoxygenation sedimentation unit 5, handle back water outlet suspension content＜20mg/L, dissolved oxygen≤0.5mg/L, enter again and pump into more medium filter 8 by filtration working shaft 7 after ultraviolet-sterilization unit 6 is handled, handle back water outlet oleaginousness＜0.1mg/L, suspension content＜5mg/L, after entering charcoal filter 9 processing, after pumping into ultra filtration unit 11 and handle by ultrafiltration intake pump 10, the water outlet oleaginousness is 0mg/L, turbidity＜0.5NTU, pumping into low pressure reverse osmosis device 13 by reverse osmosis working shaft 12 handles, operating pressure control with 0.6-0.8MPa is handled, reach high pressure steam boiler 18 water supply standards, produce the water rate of recovery and reach 60%-80%, enter high pressure steam boiler and use.
The dense water of 20%-40% after low pressure reverse osmosis device 13 is handled also can pump into high pressure reverse osmosis unit 15 by high-pressure hydraulic pump 14 and handle, and enters high pressure steam boiler 18 after the processing and uses, and produces the water rate of recovery and reaches 50%-60%.The dense water of 40%-50% after entering the high pressure reverse osmosis unit and handling enters flash distillation and handles, and enters high pressure steam boiler after the processing and uses, and produces the water rate of recovery and reaches 70%-80%, and the 20%-30% condensed water is used for salt manufacturing 17, recycles as byproduct.Heavy crude heat extraction sewage enters before the surge tank 2, and its high temperature that has is incorporated in flash distillation 16 treatment steps by energy recovery use device 1, and the heat energy when reducing flash distillation is supplied with.
Claims (4)
1, a kind of advanced treatment process that is used for the heavy crude heat extraction sewage of high-duty boiler, comprise that heavy crude heat extraction sewage enters surge tank, through sterilization, filtered water pump, filter, the ultrafiltration water pump, ultrafiltration, the reverse osmosis working shaft, reverse osmosis unit to high pressure steam boiler uses, it is characterized in that described heavy crude heat extraction sewage makes oil content of wastewater＜15mg/L by surge tank through the pre-biochemical unit of air supporting, enter biochemical unit and fully contact processing back water outlet oleaginousness＜1mg/L with microbial film, enter the deoxygenation sedimentation unit, handle back water outlet suspension content＜20mg/L, dissolved oxygen≤0.5mg/L, pump into more medium filter by filtering working shaft after entering the ultraviolet-sterilization cell processing again, handle back water outlet oleaginousness＜0.1mg/L, suspension content＜5mg/L, after entering the charcoal filter processing, after being pumped into ultra filtration unit and handled by the ultrafiltration water pump, the water outlet oleaginousness is 0mg/L, turbidity＜0.5NTU, pump into the low pressure reverse osmosis device by the reverse osmosis working shaft and handle, use 0.6-0.8MP
aOperating pressure control handle, reach the high pressure steam boiler water supply standard, produce the water rate of recovery and reach 60%-80%, enter high pressure steam boiler and use.
2, the advanced treatment process that is used for the heavy crude heat extraction sewage of high-duty boiler according to claim 1, the dense water that it is characterized in that described 20%-40% after the low pressure reverse osmosis device is handled also can pump into the high pressure reverse osmosis unit by high-pressure hydraulic pump and handle, enter high pressure steam boiler after the processing and use, product water adds yield and reaches 50%-60%.
3, the advanced treatment process that is used for the heavy crude heat extraction sewage of high-duty boiler according to claim 2, it is characterized in that the described dense water of 40%-50% that enters after the high pressure reverse osmosis unit is handled enters flash distillation and handles, entering high pressure steam boiler after the processing uses, produce the water rate of recovery and reach 70%-80%, the 20%-30% condensed water is used for salt manufacturing, recycles as byproduct.
4, the advanced treatment process that is used for the heavy crude heat extraction sewage of high-duty boiler according to claim 3, it is characterized in that described heavy crude heat extraction sewage enters before the surge tank, its high temperature that has is incorporated in the flash distillation treatment step by the energy recovery use device, and the heat energy when reducing flash distillation is supplied with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100165659A CN100526239C (en) | 2007-08-22 | 2007-08-22 | Deep treatment technique of heavy crude heat extraction sewage for high pressure boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100165659A CN100526239C (en) | 2007-08-22 | 2007-08-22 | Deep treatment technique of heavy crude heat extraction sewage for high pressure boiler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101143755A CN101143755A (en) | 2008-03-19 |
| CN100526239C true CN100526239C (en) | 2009-08-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2007100165659A Expired - Fee Related CN100526239C (en) | 2007-08-22 | 2007-08-22 | Deep treatment technique of heavy crude heat extraction sewage for high pressure boiler |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102295356B (en) * | 2010-06-28 | 2013-05-01 | 中国石油化工股份有限公司 | Method for treating steam condensed water by virtue of organic separation membrane |
| CN102452760B (en) * | 2010-10-19 | 2013-07-03 | 中国石油化工股份有限公司 | Treatment method for recycle of oil field produced water |
| CN104310688B (en) * | 2014-10-21 | 2017-03-22 | 佛山市佳利达环保科技股份有限公司 | Method for producing steam by utilizing industrial waste water |
| CN105668942B (en) * | 2016-04-01 | 2018-11-06 | 浙江东洋环境工程有限公司 | A kind for the treatment of process of high concentration and refractory organic wastewater |
| CN106277614B (en) * | 2016-08-30 | 2019-05-10 | 河南油田工程咨询股份有限公司 | A kind of processing method of reuse condensed oil sewage |
| CN111547908A (en) * | 2020-05-20 | 2020-08-18 | 中国石油工程建设有限公司 | Method and device for recycling, treating and regenerating saline produced water of super-heavy oil |
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2007
- 2007-08-22 CN CNB2007100165659A patent/CN100526239C/en not_active Expired - Fee Related
Non-Patent Citations (2)
| Title |
|---|
| 稠油污水深度处理技术探讨. 王棠昱，黄坤，王元春等.内蒙古石油化工，第1期. 2007 |
| 稠油污水深度处理技术探讨. 王棠昱，黄坤，王元春等.内蒙古石油化工，第1期. 2007 * |
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