SUEZ DK8040F30 nanofiltration membrane is an industrial-grade nanofiltration membrane element with high desalination rate, which can effectively intercept molecules with a molecular weight of about 150-300 daltons, and intercept divalent and multivalent salt ions, while relatively permeable to monovalent ions. The nanofiltration membrane is characterized by its effective removal of COD, with a removal rate of 80-90% in the biochemical effluent. Below, the blue film water treatment will introduce to you the reasons why it cannot be used normally.
Analysis of the causes of the failure to work properly
1.Insufficient pretreatment: This is a common cause of the SUEZ DK8040F30 nanofiltration membrane not working properly. If the pretreatment is not done properly, impurities such as suspended solids, colloids, and microorganisms in the influent water may clog the membrane pores and reduce the flux of the membrane. Therefore, for the influent water, strict pretreatment is required, such as filtration, sedimentation, disinfection, etc., to ensure that the water quality of the influent meets the requirements.
2.Improper operation: If the operating pressure is too high, it may cause membrane rupture;If the operating pressure is too low, it can lead to a decrease in membrane flux. In addition, if the influent water temperature is too high, it can also cause damage to the membrane. Therefore, in the process of operation, it is necessary to strictly follow the operating procedures to ensure that the operating pressure, temperature and other parameters are controlled within the appropriate range.
3.Poor cleaning and maintenance: During the use of nanofiltration membranes, some dirt may accumulate on their surfaces, which may affect the flux of the membrane if not cleaned in time. Therefore, the membrane needs to be cleaned and maintained regularly to keep it in good working condition.
4.Aging damage of membranes: SUEZ DK8040F30 nanofiltration membranes have a certain service life, and their performance may gradually decline with increasing use time. Therefore, it is necessary to test the membrane regularly, and if the performance is found to be significantly reduced, the membrane should be replaced with a new one in time.
5.Chemical damage: For example, chemicals such as oxidants, reducing agents, organic solvents, etc. in the feed water can cause damage to membranes. Therefore, these chemicals need to be avoided from entering the incoming water during application.
In summary, the reasons why the SUEZ DK8040F30 nanofiltration membrane cannot be used properly may include insufficient pretreatment, improper operation, untimely cleaning and maintenance, aging, and chemicals in the influent water. In order to ensure the normal use of the membrane, it is necessary to investigate these causes and take corresponding measures to solve them.
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