SUEZ DL2540C50 nanofiltration membrane is a highly efficient water treatment membrane designed to provide excellent desalination and purification results This nanofiltration membrane is widely used in industrial wastewater treatment, purification of secondary and ** wastewater treatment effluent, removal of organic matter and salt, and to meet discharge regulations or industrial water needs such as cooling water. Below, the blue film water treatment will introduce to you the reasons for its repeated pollution.
Analysis of the causes of repeated contamination
1.Poor influent water quality: Influent water quality is one of the important factors affecting membrane pollution. If the influent water quality is poor and contains a large amount of suspended solids, colloids, microorganisms and organic matter, these impurities are easy to be deposited on the surface of the membrane and form a pollution layer, which will affect the flux and retention performance of the membrane. Therefore, when applying the DL2540C50 nanofiltration membrane, it is necessary to ensure that the influent water quality meets certain requirements to reduce the possibility of membrane fouling.
2.The system rate is too high: The system rate refers to the ratio of the amount of water treated by the membrane system to the amount of influent water. Too high a ** rate will lead to an increase in the water flow rate on the membrane surface and an acceleration of the membrane fouling rate. Therefore, the rate should be reasonably controlled during operation to avoid membrane fouling caused by too high rate.
3.Improper operating pressure: Operating pressure is one of the important factors affecting membrane performance. If the operating pressure is too high, it can lead to membrane rupture or damage, which can affect the flux and retention performance of the membrane. In addition, too low operating pressure can also increase the rate of membrane fouling. Therefore, when operating the DL2540C50 nanofiltration membrane system, it is important to ensure that the operating pressure is within the appropriate range.
4.Membrane cleaning and maintenance is not in place: Membrane cleaning and maintenance is a key link to ensure membrane performance and life. If the cleaning and maintenance are not in place, the surface of the membrane is prone to form a fouling layer, which affects the flux and retention performance of the membrane. Therefore, regular cleaning and maintenance should be carried out to ensure that the membrane is clean and smooth.
5.Aging and damage of membranes: Aging and damage of membranes is one of the important factors affecting the performance and life of membranes. With the passage of time, cracks, holes and other damage may occur on the surface of the membrane, resulting in a decrease in the flux and retention performance of the membrane. Therefore, the condition of the membrane should be checked regularly, and the damaged and aged membrane should be replaced in time.
6.Improper use of oxidants and disinfectants: Oxidizers and disinfectants are commonly used water treatment agents, but if used incorrectly, they can have adverse effects on membranes. Excessive amounts of oxidants and disinfectants may disrupt the chemical stability of the membrane, resulting in a decrease in membrane performance. Therefore, oxidants and disinfectants should be used rationally and excessive use should be avoided.
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