Sewage treatment equipment process description

Update:03-12-2018
Summary:

Process flow Raw water→grid→regulating tank→lifting pum […]

Process flow

Raw water→grid→regulating tank→lifting pump→bioreactor→circulating pump→membrane component→disinfecting device→middle water storage pool→water water system

Process description

After entering the regulating tank through the grid, the sewage enters the bioreactor through the lifting pump, and the aerator is turned on by the PLC controller to oxygenate. The bioreactor effluent enters the membrane separation processing unit through the circulation pump, and the concentrated water returns to the regulating tank, and the membrane separates the water. After rapid mixing chlorination (sodium hypochlorite, bleaching powder, chlorine tablets), enter the pool of water storage tank. The backwashing pump backwashes the membrane treatment equipment with the treated water in the cleaning tank, and the backflushing water returns to the conditioning tank. The pump is controlled to open and close by the water level in the bioreactor. The filtration and backwashing operations of the membrane unit can be controlled automatically or manually. When the membrane unit requires a chemical cleaning operation, the inlet valve and the sewage circulation valve are closed, the rinsing valve and the reagent circulation valve are opened, and the chemical circulation pump is started to perform the chemical cleaning operation.

The integrated bioreactor is controlled by a programmable controller (PLC). Has the following features:

The membrane bioreactor adopts automatic control system in the whole process, which greatly reduces the operation and management costs.

When the water in the bioreactor reaches a high water level, the lift pump stops running and the lift pump automatically turns on when the water level drops to a low water level.

Automatically turn on and off the circulation pump according to the water level of the water tank.

Automatically turn on and off the dosing pump, and the dosage can be adjusted as needed.

Automatic operation of membrane cleaning and disinfection procedures.

The motor is equipped with overcurrent and overload protection.

The reclaimed water reuse projects that have been built generally have problems such as poor treatment effect, high operating costs, and large floor space, and the processing facilities are not ideal. Therefore, China's urban water treatment business urgently needs to develop economical and efficient treatment processes and supporting equipment.

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