After a period of operation, the multi-media filter must be cleaned. The following Shandong multi-media filter manufacturer will give you a detailed explanation of the cleaning steps!
Open multi-media filter exhaust valve, backwash drainage door and forward wash drainage door, drain water until the water level is 20-40 cm higher than the filter material, and close the front wash drainage door. (About 5 minutes)
2. Air scrubbing
Open the multi-media filter intake door, start the Roots blower, scrub the filter material for 5 minutes, stop the Roots blower, close the intake door.
The backwashing drain pipe should not discharge a large amount of water during air scrubbing, so it is easy to run off the filter material. If there is a large amount of drainage indicating that the water level inside the filter is too high, immediately stop empty wiping and continue to drain water.
Open the multi-media filter backwash inlet door, start the cleaning pump, use the manual inlet door to control the flow rate of 100-130 m3/h, control the expansion height of the filter material not to exceed the middle of the upper monitoring window, check the backwash drainage without filter material, until the backwash drainage is clear.
4. Upper Water
Close the backwash drain door until the exhaust valve is full of water. Stop cleaning the pump. Close the backwash inlet valve, backwash drain valve and exhaust valve, and clean the qualified backup filter with multi-media.
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