CN101113048A - Oil field wastewater treatment method - Google Patents
Oil field wastewater treatment method Download PDFInfo
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- CN101113048A CN101113048A CNA2006100294532A CN200610029453A CN101113048A CN 101113048 A CN101113048 A CN 101113048A CN A2006100294532 A CNA2006100294532 A CN A2006100294532A CN 200610029453 A CN200610029453 A CN 200610029453A CN 101113048 A CN101113048 A CN 101113048A
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Abstract
The invention relates to polluted air purification treatment technique field, which is an oil field wastewater treatment method. The steps of the method are firstly oxidation treatment then regular coagulation treatment. The method employs the synergic functions of ozone and ultrasonic to treat emulsion oil extraction wastewater, and then takes emulsion-breaking treatment to the oil, thus improving the coherence of pollutants and benefiting the subsequent coagulation treatment.
Description
Technical field
The present invention relates to a kind of wastewater treatment technique field.
Background technology
In the prior art, adopt physico-chemical process to handle oil extraction waste water, effluent quality can only satisfy underground re-injection requirement usually, is difficult to satisfy the industrial wastewater discharge standard.Overwhelming majority waste water carry out underground re-injection after conventional art breading, but wherein very major part be invalid re-injection for avoiding environmental pollution to take, its cost is very high, and the re-injection resource-constrained, the difficulty in treatment of oil extraction waste water is that pollutent is neither easily separated, is difficult for degraded again.The biodegradability of waste water is poor, generally the BOD/COD value is no more than 0.2, the biochemical treatment difficulty (document 1:Tapan K.gf af., Fate ofCrude oil by theCombinationof Photooxidation and Biodegradation[J], Environ.Sci.Techn01.，2000，34(8)：1500.1505。At present, take anaerobic biological treatment, though the BOD/COD value rises, biodegradability strengthens, because contaminant degradation speed is slow, the hydraulic detention time of anaerobic unit is long, has limited this technology popularization and has used.The key that addresses the above problem is the oxidation technology of the pollutent seeking to suit and improves the effective way of separated from contaminants efficient, the biodegradability energy of regulation and control thick-oil waste water.
Summary of the invention
The principle of the invention is: according to the structure and the character of principal pollutant in the oil extraction waste water, under ozone one supersonic synergetic effect, the oxidation of ozone not only makes in the waste water inorganic pollutant obtain cutting down, and the biodegradability of waste water is improved.Ultrasound-ozone coordination technique of the present invention has multiple action to conversion, degraded and the breakdown of emulsion etc. of pollutent, and is significant to the regulation and control of oil extraction waste water biodegradability, is the effective means that solves a thick-oil waste water biochemical treatment difficult problem.Adopt present method to handle oil extraction waste water, compare, increased BOD, COD concentration multiple ratio with conventional oil removal, coagulating treatment.The cohesion performance of pollutent improves, and synergistic result is far superior to the use of monotechnics, and processing costs reduces.
Therefore, for overcome above-mentioned pollutent not easily separated, be difficult for degraded and long defective of time, purpose of the present invention just provides a kind of separated from contaminants efficient height, oil field wastewater treatment method that biodegradability is stronger.
To achieve these goals, technical scheme of the present invention is as follows:
A kind of oil field wastewater treatment method, the step of this method is:
1) oxide treatment: oil extraction waste water is added in the reaction unit from bottom to top, feed ozone, make that ozone concn reaches 5--20me/L in the reaction unit; Meanwhile, add ultrasonic wave, its frequency greater than 201 (Hz, smaller or equal to 25kHz, sound intensity value is controlled between the 0.5-1.0 10; Oil extraction waste water and ozone are stirred, it is fully contacted; Oil extraction waste water residence time in reaction unit is 8-20 minute;
2) conventional coagulating treatment.
3) in step 2) after can add the routine biochemistry treatment step.
Beneficial effect of the present invention:
1. the invention belongs to the physical chemistry treatment process, utilized ozone one ultransonic synergy, difficult for biological degradation pollutent in the oxidation oil extraction waste water, can make the macromolecular substance in the oil extraction waste water be decomposed into the less material of molecular weight, become the compound of relatively easy degraded, thereby the BOD/COD value of oil extraction waste water rises, and compares biodegradability with physico-chemical process processing oil extraction waste water in the prior art and is improved.
2. the inventive method has utilized ozone one ultransonic synergy to handle the emulsification oil extraction waste water, it is carried out breakdown of emulsion handle, and has improved the coherency of pollutent, helps follow-up coagulating treatment.
3. adopt special reaction device of the present invention with ultrasonic rationally integrated with ozone technology, its comprehensive cost is lower, compares with anaerobic biological treatment of the prior art, and processing efficiency of the present invention obviously improves, and hydraulic detention time shortened to about 10-20 minute by several days.
Embodiment
Further describe the present invention by the following examples.
Certain oil production waste water in oil field contains COD 221mg/L after oil removal, coagulating treatment, BOD 38mg/L, mineral oil 31mg/L.
The present embodiment treatment step is as follows:
(1) oxide treatment: oil extraction waste water is added in the reaction unit from bottom to top, feed ozone, make that ozone concn reaches 9.55mg/L in the reaction unit; Add ultrasonic wave simultaneously, its frequency is 21kHz, and sound intensity value is 0.6 Io; Oil extraction waste water and ozone are stirred, it is fully contacted; Oil extraction waste water residence time in reaction unit is 10 minutes;
(2) carry out conventional coagulating treatment then: add polymerize aluminum chloride, reach 60mg/L to reaction density, add polyacrylamide again, make concentration reach 2mg/L.
The inventive method result such as table 1.
The wastewater treatment result of table 1 embodiment 1
Table one
| The pollutent index | BOD | COD | Mineral oil |
| Step (1) concentration (mg/L) | 73.8 | 589.3 | 47.1 |
| Step (2) concentration (mg/L) | 94.3 | 370.3 | 16.8 |
| Step (3) concentration (mg/L) | 21.1 | 95.2 | 8.7 |
Claims (2)
1. oil field wastewater treatment method, the step of this method is:
1) oxide treatment: oil extraction waste water is added in the reaction unit from bottom to top, feed ozone, make that ozone concn reaches 5--20me/L in the reaction unit; Meanwhile, add ultrasonic wave, its frequency greater than 201 (Hz, smaller or equal to 25kHz, sound intensity value is controlled between the 0.5-1.0 10; Oil extraction waste water and ozone are stirred, it is fully contacted; Oil extraction waste water residence time in reaction unit is 8-20 minute;
2) conventional coagulating treatment.
2. oil field wastewater treatment method as claimed in claim 1 is characterized in that: in step 2) after add the routine biochemistry treatment step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100294532A CN101113048A (en) | 2006-07-27 | 2006-07-27 | Oil field wastewater treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100294532A CN101113048A (en) | 2006-07-27 | 2006-07-27 | Oil field wastewater treatment method |
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| Publication Number | Publication Date |
|---|---|
| CN101113048A true CN101113048A (en) | 2008-01-30 |
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| CNA2006100294532A Pending CN101113048A (en) | 2006-07-27 | 2006-07-27 | Oil field wastewater treatment method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103880150A (en) * | 2014-04-04 | 2014-06-25 | 厦门理工学院 | Water treatment device for enhancing chloramine disinfection and treatment method thereof |
| CN104058521A (en) * | 2014-07-12 | 2014-09-24 | 长春黄金研究院 | Non-ferrous mine waste water treatment technology |
| CN104710064A (en) * | 2015-03-19 | 2015-06-17 | 北京欧泰克能源环保工程技术股份有限公司 | Method and device for processing polymer-contained waste liquid and fracturing flow-back fluid |
| CN105198158A (en) * | 2015-09-10 | 2015-12-30 | 杨慧 | Deep treatment method for oil and gas field wastewater |
| CN105540964A (en) * | 2016-01-08 | 2016-05-04 | 中国石油天然气集团公司 | Method for degrading guanidine gum in waste fracturing fluid under coupling of potassium ferrate and ultrasonic intensification |
| CN110467297A (en) * | 2019-08-15 | 2019-11-19 | 河南省化工研究所有限责任公司 | A kind of processing method of emulsified fluorescent penetrant oil waste water |
| CN111138026A (en) * | 2019-12-13 | 2020-05-12 | 陕西速源节能科技有限公司 | Oil field wastewater treatment method based on environmental protection |
| CN111170559A (en) * | 2020-01-07 | 2020-05-19 | 无锡市远洲环保科技有限公司 | Integrated sewage treatment equipment |
-
2006
- 2006-07-27 CN CNA2006100294532A patent/CN101113048A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103880150A (en) * | 2014-04-04 | 2014-06-25 | 厦门理工学院 | Water treatment device for enhancing chloramine disinfection and treatment method thereof |
| CN103880150B (en) * | 2014-04-04 | 2015-07-15 | 厦门理工学院 | Water treatment device for enhancing chloramine disinfection and treatment method thereof |
| CN104058521A (en) * | 2014-07-12 | 2014-09-24 | 长春黄金研究院 | Non-ferrous mine waste water treatment technology |
| CN104710064A (en) * | 2015-03-19 | 2015-06-17 | 北京欧泰克能源环保工程技术股份有限公司 | Method and device for processing polymer-contained waste liquid and fracturing flow-back fluid |
| CN105198158A (en) * | 2015-09-10 | 2015-12-30 | 杨慧 | Deep treatment method for oil and gas field wastewater |
| CN105540964A (en) * | 2016-01-08 | 2016-05-04 | 中国石油天然气集团公司 | Method for degrading guanidine gum in waste fracturing fluid under coupling of potassium ferrate and ultrasonic intensification |
| CN105540964B (en) * | 2016-01-08 | 2018-12-18 | 中国石油天然气集团公司 | The method of guanidine glue in degradation fracturing waste liquor is coupled with intensified by ultrasonic wave with potassium ferrate |
| CN110467297A (en) * | 2019-08-15 | 2019-11-19 | 河南省化工研究所有限责任公司 | A kind of processing method of emulsified fluorescent penetrant oil waste water |
| CN111138026A (en) * | 2019-12-13 | 2020-05-12 | 陕西速源节能科技有限公司 | Oil field wastewater treatment method based on environmental protection |
| CN111170559A (en) * | 2020-01-07 | 2020-05-19 | 无锡市远洲环保科技有限公司 | Integrated sewage treatment equipment |
| CN111170559B (en) * | 2020-01-07 | 2022-02-18 | 无锡市远洲环保科技有限公司 | Integrated sewage treatment equipment |
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Application publication date: 20080130 |