Author：Huamo Water treatment materials FROM：Water filter membrane manufacturer TIME：2021-11-04
c. After connecting the ro membrane filter, introduce the permeate into the 1/2 relative height of the cleaning water storage tank, open the cleaning pump channel door, run the cleaning pump, slightly open the cleaning pump outlet circulation system door, and open the 5μm filter device channel door and outlet Door, open the pipeline gas door, let the gas flow out of the system software, until it flows out and prepare for cleaning in advance.
Clean with 0.1% formaldehyde solution or disinfectant circulation system with a concentration value of 100mg/L for at least 1h on time. The reverse osmosis element membrane that has been polluted by the environment for a long time should be cleaned with 2% ammonium citrate aqueous solution (pH 4~8), or with sodium bisulfite, sodium hexametaphosphate, dilute sulfuric acid, etc., to avoid manganese, iron and sulfide fouling. Sometimes enzymatic detergents are used to clean organic compounds. The cleaning working pressure is controlled at 0.34~0.98MPa, and the cleaning flow rate is 2~3 times that of the original sewage treatment flow rate.
Total cleaning flow: For 8-foot membrane elements, the maximum flow rate is 9.1.m/h, for 4-foot membrane elements, the maximum flow rate is 1.8-2.m/h, and for 2.5 feet membrane elements, the maximum flow rate is 0.7.1.1.m /h. The working pressure of the high-pressure vessel must be the maximum working pressure that reaches the above-mentioned flow rate, but the loss of the high-pressure vessel must not exceed 60 psi.