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Method for controlling oil-bearing waste water

A waste water and oil separation technology, applied in chemical instruments and methods, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve the problems of high operating cost, harsh conditions, large investment, etc. Strict, increase the chance of collision, the effect of large investment

Inactive Publication Date: 2002-09-04
吴振庭
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its harsh conditions, complex process, large floor area, troublesome operation, high operating cost, and strict requirements for operation management affect its popularization and application.
The adoption of foreign biochemical technology also needs to be carried out under certain conditions, the processing cycle is long, the operation management is stricter, the work efficiency is low, the investment is large, and it is not suitable for economic considerations

Method used

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Examples

Experimental program
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Effect test

Embodiment approach 1

[0020] Implementation method 1: Treatment of high-heavy oil production wastewater in Liaohe oilfield oil production plant.

[0021] The specific operations are carried out in the following order:

[0022] 1. Oil separation and sand removal: firstly, take the oily waste water of high-viscosity oil production wastewater, and use the oil separator to perform conventional oil separation and sand removal treatment. Oil recovery, sand discarded.

[0023] 2. Enhanced demulsification: The water after oil separation and sand removal is pumped into a reaction tank equipped with an enhanced demulsifier, and the demulsification takes 3-5 minutes. The weight ratio of the enhanced demulsifier to water is 3:10000. The enhanced demulsifier used is "HR-2 type demulsifier" produced and sold by Shenyang Hongri Environmental Protection High-tech Research Institute.

[0024] 3. Air flotation: The water after demulsification enters the air flotation machine for air flotation, recovers oil, and re...

Embodiment approach 2

[0028] Implementation method 2: Treatment of low-oil and high-salt reinjection water in Daqing Oilfield Oil Production Plant.

[0029] The specific operations are carried out in the following order:

[0030] 1. Oil separation and sand removal: firstly, take the oily wastewater with low oil and high salt and re-injection water, and use the oil separator to perform conventional oil separation and sand removal treatment. Oil recovery, sand discarded.

[0031] 2. Enhanced demulsification: The water after oil separation and sand removal is pumped into a reaction tank equipped with an enhanced demulsifier, and the demulsification takes 3-5 minutes. The weight ratio of the enhanced demulsifier to water is 2:10000. The enhanced demulsifier used is "HR-2 type demulsifier" produced and sold by Shenyang Hongri Environmental Protection High-tech Research Institute.

[0032] 3. Air flotation: The water after demulsification enters the air flotation machine for air flotation, recovers oil...

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Abstract

A technological process for treating oily waste water in oil field does not adopt the biological technology with harsh requirement, and directly utilizes the intensified demulsifier to make intensified demulsification of waste water in which the oil must be intercepted and sand must be removed, then adopts the air-float process to directly make oxidation reduction reaction and flocculation adsorption action, then utilizes several filtering media to make complete filtration so as to implement waste water discharge reaching the standard.

Description

technical field [0001] The invention relates to a process for purifying and treating oilfield oil production wastewater, in particular to a treatment method for oily wastewater of high viscous oil production wastewater and low-oil and high-salt reinjection water. It can also be widely used to treat oily wastewater in other industries such as petroleum industry, metal industry, food processing industry and textile industry. Background technique [0002] As we all know, with the development of social productivity and the improvement of science and technology, the threat of environmental pollution to human survival and development has attracted people's attention. In order to protect human health and maintain ecological balance, various measures to control environmental pollution have emerged in large numbers. Since there are many types of oily wastewater and a wide range of sources, the equipment and methods used for treatment are also different. Generally, according to the ...

Claims

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Application Information

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IPC IPC(8): C02F9/02C02F9/04
Inventor 吴振庭
Owner 吴振庭
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