First, let's take a look at the reasons for the reduction in the periodic water production of the FRP filter:
1. "Agglomeration" of the filter layer
2. Backwashing strength is not enough or backwashing is not complete
3. The backwash cycle is too long
4. The water distribution device (or drainage device) is damaged, causing bias flow
5. The filter layer is too low
6. The original water quality is suddenly turbid (for example, during the flood period, the content of suspended solids in the water increases sharply)
Secondly, for the above reasons, there are the following solutions:
1. Strengthen backwashing and coagulation and cleaning of water
2. Adjust the backwash water pressure and flow rate to strengthen the backwash work
3. Appropriately increase the number of backwashing and shorten the backwashing cycle
4. Check the distribution and drainage devices, and deal with the symptoms
5. Appropriately increase the height of the filter layer
6. Strengthen the analysis of raw water quality and data collection, master the law of water quality changes, strengthen the turbidity of raw water, and reduce the turbidity of water entering the filter
