CN108773974A - A kind of processing method of oil extraction waste water - Google Patents

A kind of processing method of oil extraction waste water Download PDF

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Publication number
CN108773974A
CN108773974A CN201810597761.8A CN201810597761A CN108773974A CN 108773974 A CN108773974 A CN 108773974A CN 201810597761 A CN201810597761 A CN 201810597761A CN 108773974 A CN108773974 A CN 108773974A
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China
Prior art keywords
oil
water
processing method
electric flocculation
reactor
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Pending
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CN201810597761.8A
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Chinese (zh)
Inventor
潘丹萍
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Nanjing Institute of Technology
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Nanjing Institute of Technology
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Priority to CN201810597761.8A priority Critical patent/CN108773974A/en
Publication of CN108773974A publication Critical patent/CN108773974A/en
Pending legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/463—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrocoagulation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/10—Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/04—Disinfection
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/06—Aerobic processes using submerged filters
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • C02F3/1236—Particular type of activated sludge installations

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)

Abstract

The invention discloses a kind of processing methods of oil extraction waste water, it includes the following steps：First use the larger suspended matter in grid or sieve removal oil extraction waste water；It is passed through oil separator after demulsifier is added, realizes water-oil separating；Upper layer oil enters oil storage tank and is stored, and lower water, which is passed through electric flocculation reactor, carries out electric flocculation, further removes oil；The water outlet of electric flocculation reactor enters biological contact oxidation pond, hydraulic detention time 5-8h；Biological contact oxidation pond water outlet enters MBR reaction tanks or membrane catalytic reactor, hydraulic detention time 3-8h；MBR reaction tanks or membrane catalytic reactor water outlet enter sterilization pool, the discharge of sterilization pool standard water discharge.The present invention is efficiently treated through oil extraction waste water by the way of physical treatment combination biological treatment, and water quality that treated can reach the emission request of GB8978-1996.

Description

A kind of processing method of oil extraction waste water
Technical field
The present invention relates to a kind of wastewater treatment methods, more particularly to a kind of processing method of oil extraction waste water.
Background technology
With the development of economy and society, contaminated wastewater increases severely with day, environmental pollution is increasingly valued by people, oil-containing Waste water is common in numerous waste water, and oil exploitation is one of its generation source.Oil pollutant once enters water body at once Oil film is diffuseed to form in the water surface, organizes water body reoxygenation from air.According to the presence of the source of oily waste water and oils in water Form is different, can be divided into：Oil slick, four major class of dispersed oil, oil emulsion and dissolved oil, these oil components are complicated, and emulsification degree is high, It is big to remove difficulty.Therefore, how efficiently to carry out the processing of oil extraction waste water to reach discharge standard is still a problem.
Invention content
To overcome above-mentioned deficiency, it is an object of the present invention to provide a kind of processing methods for capableing of efficient process oil extraction waste water, make It disclosure satisfy that GB8978-1996 emission requests.
The solution of the present invention is as follows：A kind of processing method of oil extraction waste water, includes the following steps：
1) the larger suspended matter in grid or sieve removal oil extraction waste water is first used；
2) it is passed through oil separator after demulsifier is added, realizes water-oil separating；
3) upper layer oil enters oil storage tank and is stored, and lower water, which is passed through electric flocculation reactor, carries out electric flocculation, further Remove oil；
4) electric flocculation reactor water outlet enters biological contact oxidation pond, hydraulic detention time 5-8h；
5) biological contact oxidation pond water outlet enters MBR reaction tanks or membrane catalytic reactor, hydraulic detention time 3-8h；
6) MBR reaction tanks or membrane catalytic reactor water outlet enter sterilization pool, the discharge of sterilization pool standard water discharge.
Further, there is height-adjustable heater in oil separator, upper layer oil slick is heated；
Further, demulsifier is one or more in SP types demulsifier, AP types demulsifier, AE type demulsifiers, is added Amount is 150~200mg/L；
Further, oil separator top has the gradient oil scraping plate being arranged along oil separator gradient direction, to strike off different height The oil reservoir of effect；
Further, flocculant is added in electric flocculation reactor, flocculant is diatomite, hydrated manganese dioxide, polymerization chlorine One or more in change aluminium, addition is 150~300mg/L；
Further, the water outlet of electric flocculation reactor is also into electric catalysis reactor；
Further, sodium hypochlorite is added in sterilization pool to carry out disinfection, also there is dechlorination pond after sterilization pool；
Further, it is sulfur dioxide or sodium pyrosulfite that dechlorination pond, which uses reducing agent dechlorination, reducing agent,；
Further, dechlorination pond uses activated carbon adsorption dechlorination.
Further, the membrane material in membrane catalytic reactor is polyvinylidene fluoride microporous film, poly(aryl ether ketone) film, polyether sulphone One or more of film, catalyst TiO2、CuO、MnO2、Fe3O4、ZrO2At least one of.
Advantageous effect of the present invention：The present invention carries out oil extraction waste water by the way of physical treatment combination biological treatment efficient Processing, water quality that treated can reach the emission request of GB8978-1996, while using height heater and adjustable is adjusted Height scum board is saved, scraping effect significantly improves.
Specific implementation mode
With reference to embodiment, present invention is further described in detail.
Embodiment 1
Oil extraction waste water water quality：COD is 1000~3000mg/L, and BOD is 200~600mg/L, and SS is 100~400mg/L, 800~1500mg/L of oil content, processing method include the following steps：
1) the larger suspended matter in grid or sieve removal oil extraction waste water is first used；
2) it is passed through oil separator after demulsifier is added, realizes water-oil separating；
3) upper layer oil enters oil storage tank and is stored, and lower water, which is passed through electric flocculation reactor, carries out electric flocculation, further Remove oil；
4) electric flocculation reactor water outlet enters biological contact oxidation pond, hydraulic detention time 6h；
5) biological contact oxidation pond water outlet enters MBR reaction tanks or membrane catalytic reactor, hydraulic detention time 4h；
6) MBR reaction tanks or membrane catalytic reactor water outlet enter sterilization pool, the discharge of sterilization pool standard water discharge.
Wherein, demulsifier is SP types demulsifier and AP type demulsifiers, addition 160mg/L；
Oil separator top has the gradient oil scraping plate being arranged along oil separator gradient direction, to strike off different efficient oil reservoirs；
Flocculant is added in electric flocculation reactor, flocculant is diatomite, addition 200mg/L；
Electric flocculation reactor is discharged also into electric catalysis reactor；
Sodium hypochlorite is added in sterilization pool to carry out disinfection, also there is dechlorination pond after sterilization pool；
Dechlorination pond uses reducing agent sulfur dioxide dechlorination；
Membrane material in membrane catalytic reactor is polyvinylidene fluoride microporous film, catalyst TiO2And Fe3O4。
Effluent quality is after processing：COD is 54mg/L, BOD 13mg/L, SS 15mg/L, oil content 18mg/L, is met GB8978-1996 emission requests.
Embodiment 2
Oil extraction waste water water quality：COD is 1000~3000mg/L, and BOD is 200~600mg/L, and SS is 100~400mg/L, 800~1500mg/L of oil content, processing method include the following steps：
1) the larger suspended matter in grid or sieve removal oil extraction waste water is first used；
2) it is passed through oil separator after demulsifier is added, realizes water-oil separating；
3) upper layer oil enters oil storage tank and is stored, and lower water, which is passed through electric flocculation reactor, carries out electric flocculation, further Remove oil；
4) electric flocculation reactor water outlet enters biological contact oxidation pond, hydraulic detention time 6h；
5) biological contact oxidation pond water outlet enters MBR reaction tanks or membrane catalytic reactor, hydraulic detention time 5h；
6) MBR reaction tanks or membrane catalytic reactor water outlet enter sterilization pool, the discharge of sterilization pool standard water discharge.
Wherein, demulsifier is AP types demulsifier and AE type demulsifiers, addition 200mg/L；
Oil separator top has the gradient oil scraping plate being arranged along oil separator gradient direction, to strike off different efficient oil reservoirs；
Flocculant is added in electric flocculation reactor, flocculant is hydrated manganese dioxide, addition 200mg/L；
Electric flocculation reactor is discharged also into electric catalysis reactor；
Sodium hypochlorite is added in sterilization pool to carry out disinfection, also there is dechlorination pond after sterilization pool；
Dechlorination pond uses activated carbon adsorption dechlorination；
Membrane material in membrane catalytic reactor is poly(aryl ether ketone) film, and catalyst is CuO and MnO2。
Effluent quality is after processing：COD is 45mg/L, BOD 12mg/L, SS 10mg/L, oil content 15mg/L, is met GB8978-1996 emission requests.
Embodiment 3
Oil extraction waste water water quality：COD is 1000~3000mg/L, and BOD is 200~600mg/L, and SS is 100~400mg/L, 800~1500mg/L of oil content, processing method include the following steps：
1) the larger suspended matter in grid or sieve removal oil extraction waste water is first used；
2) it is passed through oil separator after demulsifier is added, realizes water-oil separating；
3) upper layer oil enters oil storage tank and is stored, and lower water, which is passed through electric flocculation reactor, carries out electric flocculation, further Remove oil；
4) electric flocculation reactor water outlet enters biological contact oxidation pond, hydraulic detention time 7h；
5) biological contact oxidation pond water outlet enters MBR reaction tanks or membrane catalytic reactor, hydraulic detention time 8h；
6) MBR reaction tanks or membrane catalytic reactor water outlet enter sterilization pool, the discharge of sterilization pool standard water discharge.
Wherein, demulsifier is AP types demulsifier, AE types demulsifier and SP type demulsifiers, addition 200mg/L；
Oil separator top has the gradient oil scraping plate being arranged along oil separator gradient direction, to strike off different efficient oil reservoirs；
Flocculant is added in electric flocculation reactor, flocculant is aluminium polychloride, addition 200mg/L；
Electric flocculation reactor is discharged also into electric catalysis reactor；
Sodium hypochlorite is added in sterilization pool to carry out disinfection, also there is dechlorination pond after sterilization pool；
Dechlorination pond uses reducing agent sodium pyrosulfite dechlorination；
Membrane material in membrane catalytic reactor is polyether sulphone film, catalyst Fe3O4And ZrO2。
Effluent quality is after processing：COD is 48mg/L, BOD 10mg/L, SS 10mg/L, oil content 16mg/L, is met GB8978-1996 emission requests.
In conclusion oil extraction waste water treatment method provided by the invention can be efficiently treated through oil extraction waste water, so that It meets GB8978-1996 emission requests.
Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations, although Present invention has been described in detail with reference to the aforementioned embodiments, it will be understood by those of ordinary skill in the art that：It still may be used With technical scheme described in the above embodiments is modified or equivalent replacement of some of the technical features； And these modifications or substitutions, the spirit and model of various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution It encloses.

Claims (10)

1. a kind of processing method of oil extraction waste water, it is characterised in that include the following steps：
1) the larger suspended matter in grid or sieve removal oil extraction waste water is first used；
2) it is passed through oil separator after demulsifier is added, realizes water-oil separating；
3) upper layer oil enters oil storage tank and is stored, and lower water, which is passed through electric flocculation reactor, carries out electric flocculation, further removes Oil；
4) electric flocculation reactor water outlet enters biological contact oxidation pond, hydraulic detention time 5-8h；
5) biological contact oxidation pond water outlet enters MBR reaction tanks or membrane catalytic reactor, hydraulic detention time 3-8h；
6) MBR reaction tanks or membrane catalytic reactor water outlet enter sterilization pool, the discharge of sterilization pool standard water discharge.
2. processing method as described in claim 1, it is characterised in that：There is height-adjustable heater in oil separator, it is right Upper layer oil slick is heated.
3. processing method as described in claim 1, it is characterised in that：Demulsifier is SP types demulsifier, AP types demulsifier, AE types One or more in demulsifier, addition is 150~200mg/L.
4. processing method as described in claim 1, it is characterised in that：Oil separator top has to be arranged along oil separator gradient direction Gradient oil scraping plate, to strike off different efficient oil reservoirs.
5. processing method as described in claim 1, it is characterised in that：Flocculant is added in electric flocculation reactor, flocculant is One or more in diatomite, hydrated manganese dioxide, aluminium polychloride, addition is 150~300mg/L.
6. processing method as described in claim 1, it is characterised in that：Electric flocculation reactor is discharged also into electrocatalytic reaction Device.
7. processing method as described in claim 1, it is characterised in that：Sodium hypochlorite is added in sterilization pool to carry out disinfection, sterilizes Also there is dechlorination pond behind pond.
8. processing method as claimed in claim 7, it is characterised in that：Dechlorination pond uses reducing agent dechlorination, and reducing agent is dioxy Change sulphur or sodium pyrosulfite；
9. processing method as claimed in claim 7, it is characterised in that：Dechlorination pond uses activated carbon adsorption dechlorination.
10. processing method as described in claim 1, it is characterised in that：Membrane material in membrane catalytic reactor is polyvinylidene fluoride One or more of alkene microporous barrier, poly(aryl ether ketone) film, polyether sulphone film, catalyst TiO2、CuO、MnO2、Fe3O4、ZrO2In At least one.
CN201810597761.8A 2018-06-07 2018-06-07 A kind of processing method of oil extraction waste water Pending CN108773974A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110734193A (en) * 2019-10-16 2020-01-31 昆明金泽实业有限公司 Combined tobacco flavor wastewater treatment method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101428945A (en) * 2008-12-15 2009-05-13 上海埃梯梯恒通先进水处理有限公司 Method and apparatus for treating and recycling carbonized wastewater
CN102180566A (en) * 2011-03-19 2011-09-14 汤苏云 Process method for combining physical-chemical treatment and biochemical treatment for reinjection water with oil-field produced water
CN106630399A (en) * 2016-12-02 2017-05-10 常州大学 Method for treating oily sewage by electrocatalytic oxidation MBR combined technology

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101428945A (en) * 2008-12-15 2009-05-13 上海埃梯梯恒通先进水处理有限公司 Method and apparatus for treating and recycling carbonized wastewater
CN102180566A (en) * 2011-03-19 2011-09-14 汤苏云 Process method for combining physical-chemical treatment and biochemical treatment for reinjection water with oil-field produced water
CN106630399A (en) * 2016-12-02 2017-05-10 常州大学 Method for treating oily sewage by electrocatalytic oxidation MBR combined technology

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110734193A (en) * 2019-10-16 2020-01-31 昆明金泽实业有限公司 Combined tobacco flavor wastewater treatment method

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