To ensure the uniform distribution of water in the ultrafiltration system, long-term stable operation, and reduce the investment in ultrafiltration membrane cleaning and backwashing equipment, two sets of ultrafiltration systems are designed, each with 18 Dow reverse osmosis membranes installed back-to-back on the sound card rack.

In the entire application process of Dow reverse osmosis membrane, in order to better ensure the long-term stable operation of the ultrafiltration system, backwashing equipment and chemical water treatment equipment need to be equipped to remove air pollutants and eliminate the harm of air pollutants to membrane components. Select the regular backwashing method and independently set the backwashing centrifugal water pump. The main parameters of the backwashing centrifugal water pump are: flow rate, membrane component backwashing diffusion coefficient of 200L/(m2 · h), which can be calculated by converting the flow rate of demulsifier components into the total number of expensive equipment components in a single set; Considering pipeline damage, the backwash head is generally controlled to be 25m water column when the flow rate is reached; Pump material, part of which is stainless steel plate due to overcurrent. The backwash pump has a flow rate of 92m3/h and a head of 25m water column. During the chemical water treatment of ultrafiltration membrane, adjust and stabilize the working pressure to 0.1MPa. Carry out acid washing and passivation of the circulating system for 20-30 minutes, with a cleaning diffusion coefficient of 100L/(m2 · h). Convert the flow rate of the signed membrane components, and the flow rate of the high-pressure cleaning pump is 46m3/h with a head of 50m water column.

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