Membrane Bioreactor Sewage Treatment Equipment For Residential Districts

Membrane Bioreactor Sewage Treatment Equipment Residential Districts

■ Introduction
MBR sewage treatment is a common method of modern sewage treatment. It adopts membrane bioreactor (Membrane Bioreactor, referred to as MBR) technology, which is a new technology combining biological treatment technology and membrane separation technology, which replaces the traditional process. The second settling tank can carry out solid-liquid separation to obtain stable reclaimed water for direct use. It can also maintain a high concentration of microorganisms in the biological pond. The process has less sludge and can effectively remove ammonia nitrogen. The suspended solids and turbidity of the effluent are close to zero. The bacteria and viruses in the effluent are greatly removed. The energy consumption is low and the area is occupied. The area is small. In the 1970s in the United States, Japan, South Africa and many countries in Europe, membrane bioreactors have been used for sewage and wastewater treatment research. The water source is taken from domestic sewage (such as shower drainage, toilet drainage, laundry drainage, kitchen drainage, toilet drainage, etc.) and cooling water.

Parameters

■ Application
Residential districts, office buildings, shopping malls, hotels, restaurants, offices, schools, factories and other domestic sewage and similar industrial organic wastewater, such as textile, beer, paper, leather, food, chemical and other industries.

■ Technical Process
Raw water - Mechanical Bar Screen - Adjusting tank - Lifting pump - Bioreactor - Circulating pump - Membrane module - Disinfection device - Reclaimed water storage tank - Reclaimed water system
Sewage enters the regulating tank through the Mechanical Bar Screen and then enters the bioreactor via the lift pump. The aerator is turned on for oxygenation through the PLC controller. The effluent from the bioreactor enters the membrane separation processing unit via the circulating pump, and the concentrated water returns to the regulating pool. The membrane separated water After rapid mixing method chlorination disinfection (sodium hypochlorite, chlorine tablets), it enters the reclaimed water storage tank. The backwash pump uses the treated water in the cleaning tank to backwash the membrane treatment equipment, and the backwash sewage returns to the regulating tank. The opening and closing of the lift pump is controlled by the water level in the bioreactor. The filtration operation and backwashing operation of the membrane unit can be controlled automatically or manually. When the membrane unit needs a chemical cleaning operation, close the water inlet valve and the sewage circulation valve, open the medicine washing valve and the medicine circulation valve, start the chemical liquid circulation pump, and perform the chemical cleaning operation.




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