CN102976513A - Method for reducing silicon content in heavy oil wastewater - Google Patents
Method for reducing silicon content in heavy oil wastewater Download PDFInfo
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- CN102976513A CN102976513A CN2012104757863A CN201210475786A CN102976513A CN 102976513 A CN102976513 A CN 102976513A CN 2012104757863 A CN2012104757863 A CN 2012104757863A CN 201210475786 A CN201210475786 A CN 201210475786A CN 102976513 A CN102976513 A CN 102976513A
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Abstract
The invention discloses a method for reducing silicon content in heavy oil wastewater, comprising the specific steps of: adjusting the pH value of the raw material to the range of 8-11, adding magnesium chloride through a pipeline mixer so that the raw water reacts while flowing and then enters a feed liquid pool after reacting for 15-60 min, and simultaneously, adding polyaluminium chloride for flocculation and sedimentation for 30-60 min, and after sedimentation and clarification, feeding the clear liquid into the next stage of device and discharging the sludge from the bottom of a clarification pool. The method disclosed by the invention has the characteristics that the agent fed is simple, so that the probability of improving the hardness of the treating solution by introducing excessive ions into the treating solution is avoided, the load of the subsequent treating procedure is reduced and the use types and the cost of the agents are reduced; the operation process is simple and the agent does not need to be pretreated before use; and the method for reducing the silicon content in the heavy oil wastewater disclosed by the invention is capable of reducing the silicon content in the heavy oil wastewater to below 50 mg/L, thereby achieving the purpose of removing silicon and purifying water.
Description
Technical field
The invention belongs to the disposing polluted water in oil technical field, be specifically related to a kind of method that reduces silicone content in the condensed oil sewage.
Background technology
The waterflooding mode is adopted in national most of oil fields substantially at present, along with going deep into of oilfield exploitation process, China's oil field great majority have entered the middle and later periods of exploitation, in, low-permeability oilfield exploitation tertiary oil recovery technology, the thermal recovery technology of injecting steam is adopted in viscous crude hydrocarbon-bearing pool, and this causes the continuous increase of oil field water consumption and oil-containing extraction sewage output.For environment protection and the consideration that economizes on resources, how to process cost-effectively the key that oily(waste)water is the Sustainable development of present oil field.At present the processing mode of oily(waste)water has three kinds: efflux, re-injection and utilization.Oily(waste)water is back to injection boiler not only can reduce outer water displacement, can also save the clear water resource.The injection boiler water supply standard has strict restriction to the content of silicon, must be except most silicon in the decontaminated water before advancing boiler.The silicon removing method complex process of commonly using at present, treatment capacity is little, can not meet the needs of production.
Summary of the invention
For the problems referred to above, the object of the present invention is to provide a kind of method that reduces silicone content in the condensed oil sewage, the silicone content in the sewage after the processing is reduced, reach the effect of purifying waste water.
In order to achieve the above object, technical scheme of the present invention has adopted a kind of method that reduces silicone content in the condensed oil sewage, concrete steps are as follows: at first adjust the pH value to 8 of former water ~ 11, the desiliconizing agent magnesium chloride that adds 100 ~ 600mg/L by line mixer, former water is reacted in the process of Flows, behind reaction 15 ~ 60min, enter the feed liquid pond; Then enter settling pond by pump, add simultaneously the poly-aluminium of flocculation agent of 300mg/L, carry out flocculation sediment, the time is 30 ~ 60min, and clear liquid enters the next stage device after the precipitation clarification, and mud is discharged in the settling pond bottom.
Described desiliconizing agent is magnesium chloride.
Described flocculation agent is poly-aluminium.
The invention has the beneficial effects as follows: the medicament that (1) adds is simple, desiliconizing agent adopts the single compound magnesium chloride, flocculation agent only adopts poly-aluminium, thereby avoided too much ion to be introduced into the possibility that treatment soln increases treatment solution hardness, alleviate the burden of subsequent disposal operation, reduced use kind and the cost of medicament; (2) operating procedure is simple, does not need before the use medicament is carried out pre-treatment, and the medicament that adds both can adopt solid also can adopt liquid (liquid treatment better effects if); (3) method of silicone content in the reduction condensed oil sewage provided by the invention can be down to the silicone content in the condensed oil sewage below the 50mg/L, reaches the reduction silicone content, and the purpose that purifies water.
Description of drawings
Fig. 1 is a kind of process flow diagram that reduces the method for silicone content in the condensed oil sewage provided by the present invention.
Among the figure 1, alkali; 2, desiliconizing agent magnesium chloride; 3, feed liquid pond; 4, poly-aluminium; 5, settling pond.
Embodiment
Embodiment 1
As shown in Figure 1, the method of silicone content may further comprise the steps in the reduction condensed oil sewage of the present invention: adopt alkali as pH value conditioning agent 1, regulate the pH value to 9 of former water, the magnesium chloride 2 that adds 300mg/L by line mixer, former water is reacted in the process of Flows, behind the reaction 30min, enter feed liquid pond 3; Then enter settling pond 5 by pump, add simultaneously the poly-aluminium 4 of 300mg/L, carry out flocculation sediment, the time is 30min, and clear liquid enters the next stage device after the precipitation clarification, and mud is discharged in the settling pond bottom.The alkali that is used for as pH value conditioning agent in the present embodiment is NaOH solution.
Embodiment 2
The method of silicone content may further comprise the steps in the reduction condensed oil sewage of the present invention: adopt alkali as pH value conditioning agent, regulate the pH value to 10 of former water, the magnesium chloride by line mixer adding 500mg/L reacts former water in the process of Flows, behind the reaction 30min, enter the feed liquid pond; Then enter settling pond by pump, add simultaneously the poly-aluminium of 300mg/L, carry out flocculation sediment, the time is 60min, and clear liquid enters the next stage device after the precipitation clarification, and mud is discharged in the settling pond bottom.The alkali that is used for as pH value conditioning agent in the present embodiment is KOH solution.
Experimental data
Silicon initial value: 133.2mg/L
Silicone content in the condensed oil sewage that table 1 embodiment 1,2 processed
Experiment shows, adopts method of the present invention to greatly reduce silicone content in the condensed oil sewage.
Claims (3)
1. a method that reduces silicone content in the condensed oil sewage is characterized in that, may further comprise the steps: at first adjust the pH value to 8 of former water ~ 11, add the desiliconizing agent of 100 ~ 600mg/L by line mixer, behind reaction 15 ~ 60min, enter the feed liquid pond; Then enter settling pond by pump, add simultaneously the flocculation agent of 300mg/L, carry out flocculation sediment, the time is 30 ~ 60min, and clear liquid enters the next stage device after the precipitation clarification, and mud is discharged from the settling pond bottom.
2. a kind of method that reduces silicone content in the condensed oil sewage according to claim 1 is characterized in that, described desiliconizing agent is magnesium chloride.
3. a kind of method that reduces silicone content in the condensed oil sewage according to claim 1 is characterized in that, described flocculation agent is poly-aluminium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104757863A CN102976513A (en) | 2012-11-21 | 2012-11-21 | Method for reducing silicon content in heavy oil wastewater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104757863A CN102976513A (en) | 2012-11-21 | 2012-11-21 | Method for reducing silicon content in heavy oil wastewater |
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| CN102976513A true CN102976513A (en) | 2013-03-20 |
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| CN2012104757863A Pending CN102976513A (en) | 2012-11-21 | 2012-11-21 | Method for reducing silicon content in heavy oil wastewater |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014136651A1 (en) * | 2013-03-04 | 2014-09-12 | 千代田化工建設株式会社 | Silica-containing water treatment apparatus, water treatment system, and method for treating silica-containing water |
| CN105036408A (en) * | 2015-07-06 | 2015-11-11 | 江苏德邦工程有限公司 | Treatment method of wastewater containing high-concentration active silicon |
| CN105152435A (en) * | 2015-07-06 | 2015-12-16 | 江苏德邦工程有限公司 | Zero discharge industrial wastewater treatment method |
| CN105314763A (en) * | 2014-12-17 | 2016-02-10 | 新疆科力新技术发展有限公司 | Sewage silica removal system of oil field sewage reuse boiler |
| CN114349142A (en) * | 2022-03-11 | 2022-04-15 | 克拉玛依市三达新技术股份有限公司 | Silicon removal reactor for thickened oil sewage and thickened oil sewage treatment system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1412128A (en) * | 2002-11-07 | 2003-04-23 | 盘锦市华意环境工程有限公司 | Oil field visous crude sewage silicone-removing and cleaning process |
| CN101113041A (en) * | 2006-07-27 | 2008-01-30 | 上海中油企业集团有限公司 | Sewage purification method for oil production |
| CN101781037A (en) * | 2010-02-08 | 2010-07-21 | 西安石油大学 | Thickened oil sewage flocculation silicon-removing processing method |
-
2012
- 2012-11-21 CN CN2012104757863A patent/CN102976513A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1412128A (en) * | 2002-11-07 | 2003-04-23 | 盘锦市华意环境工程有限公司 | Oil field visous crude sewage silicone-removing and cleaning process |
| CN101113041A (en) * | 2006-07-27 | 2008-01-30 | 上海中油企业集团有限公司 | Sewage purification method for oil production |
| CN101781037A (en) * | 2010-02-08 | 2010-07-21 | 西安石油大学 | Thickened oil sewage flocculation silicon-removing processing method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014136651A1 (en) * | 2013-03-04 | 2014-09-12 | 千代田化工建設株式会社 | Silica-containing water treatment apparatus, water treatment system, and method for treating silica-containing water |
| CN105314763A (en) * | 2014-12-17 | 2016-02-10 | 新疆科力新技术发展有限公司 | Sewage silica removal system of oil field sewage reuse boiler |
| CN105036408A (en) * | 2015-07-06 | 2015-11-11 | 江苏德邦工程有限公司 | Treatment method of wastewater containing high-concentration active silicon |
| CN105152435A (en) * | 2015-07-06 | 2015-12-16 | 江苏德邦工程有限公司 | Zero discharge industrial wastewater treatment method |
| CN114349142A (en) * | 2022-03-11 | 2022-04-15 | 克拉玛依市三达新技术股份有限公司 | Silicon removal reactor for thickened oil sewage and thickened oil sewage treatment system |
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Address after: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Applicant after: Sinopec Corp. Applicant after: SINOPEC HENAN PETROLEUM ENGINEERING DESIGN COMPANY Address before: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Applicant before: Sinopec Corp. Applicant before: Survey, Design & Research Institute of Henan Petroleum Exploration Bureau of China Petrochemical Corporation |
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130320 |