Sewage treatment equipment for preventing membrane fouling and treatment method thereof

Abstract

The invention discloses sewage treatment equipment for preventing membrane fouling and a treatment method thereof. The sewage treatment equipment comprises a tank body, wherein the tank body is divided into an anaerobic tank, an aerobic tank and an MBR tank; a left inlet pipe of the anaerobic tank is provided with a hair filter; a top plate is provided with a stirrer; a bottom plate is provided with an anaerobic tank emptying valve; a contact oxidation filler is arranged in the middle of an inner cavity of the aerobic tank, a water passing hole is formed in a left partition plate, and an aerobic tank emptying valve and an air pipe I with an aeration pipe I are arranged on the bottom plate; an MBR membrane component is arranged in the middle of an inner cavity of the MBR tank, an overflow port is formed in a right side plate, and an MBR tank emptying valve and an air pipe II with an aeration pipe II are arranged on the bottom plate; an overflowing pipe is arranged between the MBR tank and the aerobic tank, an axial flow pump is arranged at a bottom inlet of the overflowing pipe, a siphon breaking pipe is arranged at the highest position of the top of the overflowing pipe, and a three-phase separator, a pre-separation cone and a sludge hopper are arranged at an upper outlet. According to the equipment, the MBR membrane component is provided with a back flushing system and is cleaned periodically, and flexible membrane cleaning particles are also used, so that the equipment has a good membrane fouling prevention effect and is long in service life.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a sewage treatment equipment and a treatment method for anti-membrane pollution. Background technique [0002] The traditional domestic sewage treatment process includes oxidation ditch, A 2 / O, SBR and CASS etc. The above processes can be used for centralized treatment of urban domestic sewage. However, in rural areas, the sewage is scattered, difficult to collect, and occupies a large area. It is difficult to select a site and build a site. It is not ideal, and the water SS is difficult to control. The domestic sewage treatment process is quite mature at present, and its core technologies are the activated sewage method and the biofilm method. How to use the core technology, select a reasonable sewage treatment process according to the actual situation on site, and ensure that the effluent water quality meets the standard, reduce operating costs and operate stably a...

AI Technical Summary

Problems solved by technology

However, this kind of MBR integrated equipment has shortcomings, and its anti-membrane fouling effect is not ideal, resulting in a short service life; and when the phosphorus content in the sewage is high, it is necessary to add a phosphorus removal agent to the membrane pool or aerobic pool , the generated phosphorus-containing sludge will greatly reduce the activity of activated sludge, thus affecting the water outlet effect, and needs to be optimized and improved

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