CN101891320B - Treatment method realizing polymer-bearing produced wastewater resource utilization - Google Patents
Treatment method realizing polymer-bearing produced wastewater resource utilization Download PDFInfo
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- CN101891320B CN101891320B CN2010102271438A CN201010227143A CN101891320B CN 101891320 B CN101891320 B CN 101891320B CN 2010102271438 A CN2010102271438 A CN 2010102271438A CN 201010227143 A CN201010227143 A CN 201010227143A CN 101891320 B CN101891320 B CN 101891320B
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Abstract
The invention relates to a treatment method realizing polymer-bearing produced wastewater resource utilization, which is based on flotation-filtration, double filtering, fine filtration and double-membrane filtration. The invention is characterized in that flotation-filtration includes two stages; an organic polymer reverse demulsifier is added at the first-stage flotation inlet as a deoiling agent; one or more of an inorganic salt coagulant, an inorganic polymer salt coagulant and an organic polymer coagulant is added at the second-stage flotation inlet as a coagulant; NaOH solution with volume concentration of 5-10% is added at the inlets of a back flushing pump of a double filter and a fine filter; and one or more of chlorine dioxide, quaternary ammonium salt, glutaraldehyde or halogenated phenol is added at the inlet of the double filter as a bactericide. The wastewater treated by the method has total mineralization being not more than 250mg/L and conductivity being less than 600ms/cm. The method is used for preparing polymer mother liquid and can improve the oilfield polymer injection development effect, save water resources and finally realize polymer-bearing produced wastewater resource utilization.
Description
Technical field
The present invention relates to the oil extraction-generated waste water processing technology field, specifically is a kind of treatment process that contains the polymer sewage from oil extraction recycling.
Background technology
It is the air supporting method that present stage is handled the main method that the oil field contains polymer sewage from oil extraction; Can remove most oil, polymkeric substance and suspended substance in the water through the air supporting machine, the sewage after the processing is further removed oil, polymkeric substance and the suspended substance etc. in the sewage again after strainer (double filtering filters and fine filtering) filters.Contain polymkeric substance in the polymer sewage from oil extraction because the oil field contains, sewage viscosity is multiplied, water is taken oily ability to be increased; Oil droplet size is little in the sewage, and median size is 3～5 μ m, and the ratio that oil in water emulsion accounts for is more than 90%; The water-oil interface film toughness increases, and causes stable the existing in the water of the medium and small oil droplet of water; Sewage is easy to sheared, and further emulsification; Because the result of use of flocculation agent has seriously been disturbed in the existence of anionic polymer, make the flocculation agent deleterious simultaneously.Owing to above many reasons cause the oily water separation difficulty, the sewage after the processing only is used for the re-injection oil well.
Two films (being ultrafiltration and osmosis filtration) technology is widely used in drinking water treatment and pure water preparation, is purification of water quality treatment process the most effectively at present.Though and the oil field contains polymer sewage from oil extraction through handling early stage, because existing processing mode is improper, can't accomplish to use with " two film " complete sets of Techniques through the water quality after handling early stage, the water quality after therefore final the processing is difficult to realize the sewage recycling utilization.
Summary of the invention
The object of the invention is exactly the defective that exists to prior art; Provide a kind of correlation technique that will have WWT now effectively to combine; Through adding the control of relevant medicament and parameter; Solve and control the content of handling oil, polymkeric substance, suspended substance in the sewage of back, reach entering " two film " treatment requirement, the final treatment process that realizes containing the polymer sewage from oil extraction recycling.
Its technical scheme is to be based upon on existing air-float filtration, double filtering filtration, fine filtering and the two membrane filtrations basis, cooperates degreaser, coagulating agent, sterilant and alkali lye.Wherein: air-float filtration adopts the two-stage air-float filtration, adds the organic polymer reverse-phase emulsifier as degreaser in one-level air supporting import, and dosage is 8-12mg/L, adds continuously; One or more that add inorganic salts coagulating agent, inorganic polymer salt, organic polymer coagulating agent in the secondary air-floatation import are as coagulating agent, and dosage is 300-500mg/L, adds continuously; Add the NaOH alkali lye that volumetric concentration is 5%-10% in double filtering strainer, the import of precision filter backwashing pump, dosage is 2.0-3.0mg/L, intermittently adds 1 time/month; Add in dioxide peroxide, quaternary amine, LUTARALDEHYDE or the halogenated phenols one or more as sterilant in the double filtering filter inlet, dosage is 10-20mg/L, adds continuously.
On the basis of such scheme, further improvement scheme is proposed: the ultra-filtration equipment of two membrane filtrations add volumetric concentration be the NaOH alkali lye of 5%-10% as clean-out system, dosage is 0.5-0.9mg/L, intermittently adds, backwashing period is 1 time/month; Add in organic phosphoric acid, poly carboxylic acid, the poly-phosphate one or more as Scale inhibitors at the reverse osmosis unit of two membrane filtrations inlet; Dosage 3-10mg/L adds continuously, and the acid solution that adds volumetric concentration and be 5%-10%HCl is as clean-out system; Adding dose is 0.1-0.5mg/L, intermittently adds, and backwashing period is 1 time/February.
Said inorganic salts coagulating agent is a Tai-Ace S 150, and inorganic polymer salt coagulating agent is a Poly aluminum Chloride (PAC), and the organic polymer coagulating agent is a SEPIGEL 305.
Effect of the present invention detects through chemical examination: the sewage total mineralization≤250mg/L after the processing, and specific conductivity＜600ms/cm, prepared polymer mother liquor viscosity is 1.5 times of clear water prepared polymer mother liquor viscosity.Being used for the prepared polymer mother liquor can improve the oil field and annotate and to gather development effectiveness; Reduce clear water (mainly being tap water) consumption; The conserve water resource is used for reuse gas injection boiler and can solves the wastewater disposition problem that the viscous oil recovery gas injection brings, and final realization contains the polymer sewage from oil extraction recycling.
Description of drawings
Fig. 1 is the process flow sheet of a kind of basic embodiment of the present invention;
Fig. 2 is the lonely four sewerage advanced treatment process schemas of Shengli Oil Field that are applied to of the present invention.
Embodiment
Embodiment 1, and in conjunction with (part) among Fig. 1, pretreatment stage adopts the treatment process of two-stage air supporting+double filtering strainer+precision filter, and the medicament that adds mainly contains degreaser, coagulating agent, sterilant, alkali lye etc.Add dose with flooding quantity 120m
3/ h calculates, and one-level air supporting import adds degreaser, and medicament commonly used is the organic polymer reverse-phase emulsifier, and dosage is 8-12mg/L, adds continuously; At secondary air-floatation import dosing coagulant, as: inorganic salts coagulating agent (Tai-Ace S 150), inorganic polymer salt (Poly aluminum Chloride (PAC)), organic polymer coagulating agent (SEPIGEL 305), dosage is 300-500mg/L, adds continuously; Add alkali lye (NaOH) in the import of two-stage filtration backwashing pump, volumetric concentration commonly used is 5%-10%, and dosage is 2.0-3.0mg/L, intermittently adds 1 time/month.Add sterilant in the double filtering filter inlet, sterilant commonly used has dioxide peroxide, quaternary amine, LUTARALDEHYDE, halogenated phenols etc., and dosage is 10-20mg/L, adds continuously.Characteristics according to " two film " technology are made and are respectively handled the feasible processing index that equipment claimed reaches.
In " two film " technology, to the water quality of sewage, selected the anti-pollution film, it is alkali lye (NaOH) that ultra-filtration equipment adds clean-out system, and volumetric concentration commonly used is 5%-10%, and adding dose is 0.5-0.9mg/L, intermittently adds, and backwashing period is 1 time/month; The reverse osmosis unit inlet adds Scale inhibitors, Scale inhibitors commonly used: organic phosphoric acid, poly carboxylic acid, poly-phosphate etc., dosage 3-10mg/L; Add continuously; Adding clean-out system is acid solution (HCl), and volumetric concentration commonly used is 5%-10%, and adding dose is 0.1-0.5mg/L; Intermittently add, backwashing period is 1 time/February.
Embodiment 2; In conjunction with Fig. 2 (all), on the basis of embodiment 1, in subsystem, considered the reuse of strainer backwashing water and the dense water of ultrafiltration; The strainer backwashing water is drained into secondary air-floatation equipment; Handle at system's internal recycle, reduced water producing cost and blowdown flow rate, and considered the disposal of pretreated mud, scum silica frost.
In the technical scheme of above-mentioned two embodiment, can select the many specific exampless of combination behind the dosage of medicament and qualification arbitrarily, can both realize the object of the invention preferably.
Embodiment 3, and in conjunction with Fig. 2, lonely four dirty advanced treatment and comprehensive utilization pilot test project have provided complete technical process in the accompanying drawing, cooperate the foregoing description 1 given medicament and dosage, promptly constitute more perfect treatment process, no longer do text description.This project treatment scale: product water 1000m
3/ d (being used to join polymer mother liquor), dense water 1000m
3/ d (being used for re-injection) reaches the oepration at full load state.
Input amount of the present invention is the amount of disposing of sewage relatively.
Claims (3)
1. treatment process that contains the polymer sewage from oil extraction recycling; Adopt air-float filtration, double filtering filtration, fine filtering and two membrane filtration process to cooperate degreaser, coagulating agent, sterilant and alkali lye; It is characterized in that: air-float filtration adopts the two-stage air-float filtration; Add the organic polymer reverse-phase emulsifier as degreaser in one-level air supporting import, dosage is 8-12mg/L, adds continuously; One or more that add inorganic salts coagulating agent, inorganic polymer salt, organic polymer coagulating agent in the secondary air-floatation import are as coagulating agent, and dosage is 300-500mg/L, adds continuously; Add the NaOH alkali lye that volumetric concentration is 5%-10% at double filtering strainer backwashing pump and precision filter import, dosage is 2.0-3.0mg/L, intermittently adds 1 time/month; Add in dioxide peroxide, quaternary amine, LUTARALDEHYDE or the halogenated phenols one or more as sterilant in the double filtering filter inlet, dosage is 10-20mg/L, adds continuously.
2. the treatment process that contains the polymer sewage from oil extraction recycling according to claim 1; It is characterized in that: adding volumetric concentration at the ultra-filtration equipment of two membrane filtrations is that the NaOH alkali lye of 5%-10% is as clean-out system; Dosage is 0.5-0.9mg/L, intermittently adds, and backwashing period is 1 time/month; Add in organic phosphoric acid, poly carboxylic acid, the poly-phosphate one or more as Scale inhibitors at the reverse osmosis unit of two membrane filtrations inlet; Dosage 3-10mg/L; Add continuously, the acid solution that adds volumetric concentration and be 5%-10%HCl is as clean-out system, and adding dose is 0.1-0.5mg/L; Intermittently add, backwashing period is 1 time/February.
3. the treatment process that contains the polymer sewage from oil extraction recycling according to claim 1 and 2 is characterized in that: said inorganic salts coagulating agent is a Tai-Ace S 150, and inorganic polymer salt coagulating agent is a Poly aluminum Chloride (PAC), and the organic polymer coagulating agent is a SEPIGEL 305.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102873078A (en) * | 2012-09-30 | 2013-01-16 | 浙江爱科乐环保有限公司 | Kitchen garbage disposal method |
| CN104370333A (en) * | 2014-10-24 | 2015-02-25 | 中国海洋石油总公司 | Preparation method of high-interfacial-activity reverse demulsifier |
| CN106380037A (en) * | 2016-12-06 | 2017-02-08 | 张兖驹 | Recycling and purifying method for oil well operation formate weighting agent |
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| CN102491553A (en) * | 2011-11-29 | 2012-06-13 | 成都晶宝科技有限公司 | Oilfield produced water treatment system and oilfield produced water treatment method |
| CN103011474A (en) * | 2012-12-18 | 2013-04-03 | 中国石油天然气股份有限公司 | Oil field surface agent accumulation flooding produced sewage treatment process |
| CN103112977B (en) * | 2013-02-26 | 2015-04-01 | 杭州广联新能源科技有限公司 | Method for recycling injection polymers by polymer-containing sewage advanced treatment |
| CN104250039A (en) * | 2013-06-28 | 2014-12-31 | 中国石油化工股份有限公司 | Oil extraction wastewater polymer preparation processing method |
| CN103979717B (en) * | 2014-05-23 | 2015-08-19 | 胜利油田森诺胜利工程有限公司 | Oily(waste)water ultra-filtration membrane fine processing method |
| CN104445705B (en) * | 2014-09-15 | 2016-07-06 | 浙江永立环保工程有限公司 | Two-stage series connection integral type sewage air flotation processing device and sewage treatment process |
| CN104402139A (en) * | 2014-11-11 | 2015-03-11 | 辽宁省石油化工规划设计院有限公司 | Processing method of oil-containing sewage |
| CN104803555A (en) * | 2015-04-14 | 2015-07-29 | 谭建忠 | Mobile skid-mounted equipment for efficient water treatment |
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| CN107311271A (en) * | 2017-07-13 | 2017-11-03 | 胜利油田森诺胜利工程有限公司 | A kind of graphene film filter method for oily waste water treatment |
| CN112978972B (en) * | 2019-12-18 | 2022-09-13 | 北京长润化工有限公司 | Treatment method and treatment agent for cigarette adhesive production wastewater |
| CN111732265B (en) * | 2020-08-04 | 2020-12-18 | 苏州淡林环境科技有限公司 | Nylon ATY oil agent wastewater treatment device |
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| CN201292300Y (en) * | 2008-11-07 | 2009-08-19 | 中国石油天然气集团公司 | Water producing and desalting integrated treatment apparatus for oil field |
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| CN1451610A (en) * | 2002-04-17 | 2003-10-29 | 凯能高科技工程（上海）有限公司 | Method for deeper treatment and reuse of oil production waste water in oil field by membrane separation |
| CN100475723C (en) * | 2005-04-25 | 2009-04-08 | 蓝星环境工程有限公司 | Oily sewage treatment process and treater thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102873078A (en) * | 2012-09-30 | 2013-01-16 | 浙江爱科乐环保有限公司 | Kitchen garbage disposal method |
| CN104370333A (en) * | 2014-10-24 | 2015-02-25 | 中国海洋石油总公司 | Preparation method of high-interfacial-activity reverse demulsifier |
| CN104370333B (en) * | 2014-10-24 | 2016-01-20 | 中国海洋石油总公司 | The preparation method of the active reverse-phase emulsifier of a kind of strong interface |
| CN106380037A (en) * | 2016-12-06 | 2017-02-08 | 张兖驹 | Recycling and purifying method for oil well operation formate weighting agent |
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| CN101891320A (en) | 2010-11-24 |
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Address after: 257000 Shandong province Dongying City victory software building senuo Victory Company Patentee after: Suno Technology Co., Ltd Address before: 257000 Shandong province Dongying City victory software building senuo Victory Company Patentee before: Shengli Oilfield Sino Shengli Engineering Co., Ltd. |
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