How does a belt filter treat contaminated water sources? Now let's introduce it to everyone.

When the industrial wastewater to be treated enters the body of the belt filter through the inlet, impurities in the water will first deposit on the stainless steel filter screen inside the equipment, resulting in a pressure difference. Then, the pressure difference switch is used to monitor the changes in the pressure difference between the inlet and outlet. When the pressure difference reaches the set value, the electric controller in the belt filter sends a brake signal to the hydraulic control valve and the driving motor, causing the motor to drive the brush to rotate and clean the filter element. At the same time, the control valve is opened for drainage. The entire cleaning process only takes a few tens of seconds. At the end of the cleaning process, the control valve will automatically close, the motor will stop rotating, and the system will return to its initial state, starting the next filtration process.

In many water treatment industries, belt filter is one of the main sewage purification equipment. However, when the device is constantly running, if the filtering speed is too fast, it will accumulate. When we find that the belt filter has accumulated, the measure we need to take is to add filter aids. Because the filter aid and solid matter in the filtrate accumulate together on the surface of the original pre coating or filter layer to form a new filter layer, the filter can maintain a relatively stable filtration speed during processing. When uncompressed filter residue is deposited on the filter material, the position of the particles arranged with each other and the diameter of the pores between particles do not change with the increase of pressure. On the contrary, when filtering compressible filter residue, the pore size between particles decreases with increasing pressure, thus increasing the obstruction effect on the flow of filtrate.