Treatment device for sewage

Abstract

The invention belongs to the technical field of multi-stage treatment of sewage, and particularly relates to a treatment device for sewage. The device comprises a machine frame and a cleaning bucket,the cleaning bucket is provided with a water inlet pipe and a water outlet pipe, a filter plate is arranged in the cleaning bucket, a telescopic oil filter plate is arranged in the cleaning bucket, two openings for taking out the oil filter plate are symmetrically arranged in the side walls of the cleaning bucket, a water wheel is rotatably connected with the interior of the water outlet pipe, thewater wheel is coaxially connected with a cam and a ratchet wheel, the machine frame is fixedly provided with a piston cylinder, the piston cylinder is provided with a one-way gas inlet valve, the machine frame is fixedly provided with a limit plate, an air bag is placed on the limit plate, the air bag is provided with an air inlet and an air valve, the piston cylinder communicates with the air inlet of the air bag, a replacement plate is slidably connected with the machine frame, the replacement plate abuts against one end of the oil filter plate, and the replacement plate is provided with apawl that cooperates with the ratchet wheel. According to the device provided by the invention, multi-stage treatment can be performed on the sewage, mud and sand do not block the water inlet pipe inthe treatment process, and the device is mostly used for treatment of the sewage.

Description

technical field [0001] The invention belongs to the technical field of multistage treatment of sewage, and in particular relates to a multifunctional sewage purification device. Background technique [0002] In the process of oil and gas fields and petrochemical production, a large amount of oily sewage is produced. The oily sewage contains oily crude oil, suspended solids and other complex mineral impurities, which must be treated; direct discharge will pollute the environment, and direct reinjection will cause formation pollution. [0003] For this reason, Chinese patent CN105084568A discloses an oily sewage treatment device, which includes a sewage treatment tank, a sludge collection assembly and an oil absorption assembly. The bottom of the sewage treatment area in the sewage treatment tank is connected with a sewage water inlet. The bottom of the sludge collection assembly communicates with the sludge outlet, and the collection port of the sludge collection assembly is...

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Problems solved by technology

[0004] However, there are the following problems in the above-mentioned patent: the sewage flows out from the water inlet at the bottom through a series of treatments and flows out from the purified water outlet at the top. During this process, the sludge contained in the sewage will block the water inlet at the bottom, thereby affecting the normal flow of sewage. purification process

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