Processing method of sewage in oil fields by using film evaporator

A technology of oilfield sewage and membrane evaporator, which is applied in the direction of chemical instruments and methods, mining wastewater treatment, water/sewage multi-stage treatment, etc., can solve the problems of unsatisfactory oilfield sewage effect, complicated process, waste of resources, etc., and achieve the reduction of wastewater Effects of treatment cost, large evaporation area, and energy consumption reduction

Inactive Publication Date: 2013-12-04
JEREH ENERGY SERVICES
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Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art, and provide a method for treating oilfield

Method used

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  • Processing method of sewage in oil fields by using film evaporator

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Embodiment 1

[0016] Example 1, such as figure 1 As shown, taking the oilfield sewage treatment as an example, the large-particle solid matter is removed through a vacuum ceramic filter. The pore size is selected according to the particle size distribution of the solid particles in the water, and the solid matter is solidified; Add medicaments, PAC100-500ppm or PAM5-50ppm alone, or mix and add, through the air flotation device, carry out air flotation treatment on waste oil, so that the oil in the waste water can be recovered and reused as refining raw materials; air flotation The final sewage is driven into the receiving tank through the water pump, and the pH value is adjusted in the tank. The pH value is 4-10. After preheating, it enters the thin film evaporator. The vapor pressure is higher than that of other electrolytes, so in the thin film evaporator, water will be vaporized first; due to the evaporation of water, the salts in the wastewater are concentrated, and after concentration,...

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Abstract

The invention discloses a processing method of sewage in oil fields by using a film evaporator. The processing method is characterized by comprising following technology steps: filtering sewage with a filtering device, removing oil by the air-floating method, separating and condensing sewage by the thin-film evaporating method, and processing residual slag, is mainly used for evaporating processing of sewage in oil fields, and is capable of continuously processing oil-containing sewage. The liquid phase and solid phase after being processed can be discharged without causing pollution to the environment.

Description

technical field [0001] The invention relates to the technical field of oilfield sewage treatment, in particular to a method for treating oilfield sewage by using a film evaporator, which is suitable for the treatment of oilfield sewage with high salt content and high oil content on sea and land. Background technique [0002] With the development of the oilfield mining industry, oilfield sewage is one of the main pollutants produced in the process of oilfield development. If it is not treated in time, it will have varying degrees of impact on the operating area and the surrounding environment, which will affect the air quality in the production area. There is a phenomenon that the total hydrocarbon concentration exceeds the standard, which seriously exceeds the standard of COD, BOD and petroleum hydrocarbons in the water, destroys the vegetation in the area, degrades the grassland, and affects the ecological environment. [0003] At present, most oilfields use oil separation ...

Claims

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Application Information

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IPC IPC(8): C02F9/10C02F1/08C02F103/10
Inventor 孙杰孙庆伦黄东旭
Owner JEREH ENERGY SERVICES
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