An environment-friendly sewage treatment device

Abstract

The invention provides an environment-friendly sewage treatment device, and belongs to the field of oil field production environmental protection. According to the environment-friendly sewage treatment device, an oil separation pool, a sedimentation pool, a filtering pool, an ultrafiltration pool and a clean water pool are arranged in a heat preservation shell; the oil separation pool is providedwith a water inlet pipe, an electric heater and an oil separation tank; an inclined plate and an ultrasonic vibrator are arranged in the sedimentation pool; a magnetic filter screen, a quartz sand filter layer and a gravel cushion layer are arranged in the filter pool; an MBR membrane is arranged in the ultrafiltration pool; a water outlet pipeline of the MBR membrane is connected with an inlet ofa self-priming pump, an outlet pipeline of the self-priming pump extends into the clean water pool; the bottom of the clean water pool is provided with a pipeline connecting plunger pump inlet; and aplunger pump outlet is connected with a water outlet pipe. The invention has the following beneficial effects: by means of the technical scheme, the environment-friendly sewage treatment device can complete the whole process of well washing operation, sewage treatment meets the requirements of the well washing operation, no sewage is discharged, the agent cost is low, auxiliary devices such as awater tank truck and a cementing truck do not need to be arranged, the operation cost is reduced, and the well washing quality and the well washing speed are improved.

Description

Technical field: [0001] The invention relates to the environmental protection field of oil field production, in particular to an environment-friendly sewage treatment device. Background technique: [0002] At present, when the oil field is doing well cleaning operations, it is usually equipped with a sewage tanker to store and transport the sewage spit out from the wellhead back to the joint station for treatment. It is injected into the casing of the oil tree for circulating well washing. The cost of well washing is high and the operation cost is high. At the same time, the produced sewage needs to be hauled for treatment. During winter operations, the temperature of the well washing fluid is low because the water tanker does not have the function of heat preservation. Also be unfavorable for the cleaning quality of well washing operation. Invention content: [0003] In order to solve the above problems, the present invention provides an environment-friendly sewage treat...

AI Technical Summary

Problems solved by technology

[0002] At present, when the oil field is doing well cleaning operations, it is usually equipped with a sewage tanker to store and transport the sewage spit out from the wellhead back to the joint station for treatment. It is injected into the casing of the oil tree for circulating well washing. The cost of well washing is high and the operation cost is high. At the same time, the produced sewage needs to be hauled for treatment. During winter operations, the temperature of the well washing fluid is low because the water tanker does not have the function of heat preservation. It is also not conducive to the cleaning quality of the well cleaning operation.

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