sewage treatment plant

Abstract

The invention discloses a sewage treatment device, comprising a fan, a water pump and a tank body. The upper part of the tank body is provided with a sewage inlet and an exhaust port; a Z shape separator is fixed inside the tank below the sewage inlet; the Z shape separator comprises an upper baffle plate, a vertical baffle plate, a lower baffle plate, and divides the tank body into four regions; the upper baffle plate is provided with a plurality of reflux holes, the reflux holes are equipped with anti-reflux nozzles for preventing the water above the upper baffle plate from flowing to the lower position; a membrane module is fixed below the upper baffle plate, and a hanging membrane packing assembly is fixed above the lower baffle plate; a left aeration device is fixed below the membrane assembly, and is connected with a fan outside the tank body through a gas supply pipeline; a water inlet of the water pump outside the tank body is connected with a membrane assembly water outlet duct through a water pipes; and the gas supply pipeline and the water pipe are equipped with installation valves. The device integrates two sewage treatment technology and equipment of biological membrane method and a membrane bioreactor, and has the advantages of small land occupation, and low investment and operating cost.

Description

technical field [0001] The invention relates to sewage treatment equipment, in particular to a sewage treatment device using a membrane. Background technique [0002] Due to the increasingly serious problem of eutrophication in water bodies, the requirements for nitrogen and phosphorus indicators in discharged sewage have become more and more stringent. In the GB18918-2002 "Pollutant Discharge Standards for Urban Sewage Treatment Plants" issued by my country in 2002, the A standard of the first-level standard requires TP to be less than 0.5mg / l, ammonia nitrogen to be less than 5mg / l, and total nitrogen to be less than 15mg / l. Therefore, in the process of sewage treatment, special attention should be paid to the removal of nutrients such as nitrogen and phosphorus. [0003] The current typical sewage treatment process generally includes a combination of aerobic, anoxic, anaerobic, sedimentation and sludge treatment units. Different microorganisms in activated sludge can ad...

AI Technical Summary

Problems solved by technology

At present, most of the membrane bioreactor technologies that have been disclosed are comprehensive processing devices, and the processing devices involved are all independent and separated structures. Not only the main equipment is too large, the system is complicated, but also the manufacturing cost is high and the operating cost is also low. High, obviously not suitable for domestic sewage treatment projects in small communities or rural villages and towns

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