1)There is a 100-mesh primary filtration device at the front end of the ultrafiltration device of the pure water system. There is a three-ton water storage tank at the front end of the primary filter. The raw water is deep well water, and the water tank often contains yellow slime and suspended solids. The primary filter mesh is often clogged due to the growth of biofilm and must be shut down for cleaning in 2-3 days. It also needs to be cleaned with a metal brush, which is difficult to clean. Replacement of the primary filter is frequent and expensive.
2)The water quality in Beijing is relatively hard, and the cooling circulating water and pharmaceutical process water are severely scaled, making system maintenance difficult and seriously affecting production.