In the daily operation of reverse osmosis equipment, the normal operation of security filters (ie, precision filters) plays an important role. It is an effective measure to ensure that the influent SDI value of reverse osmosis equipment is less than 5. If there is a problem with the pretreatment, the security filter can also react to the problem at the first time, effectively protecting the safety of the reverse osmosis device and protecting the normal operation of the reverse osmosis membrane.
If rust occurs in the filter element of the security filter or the color of the rust during the operation of the system, it is first necessary to confirm whether the iron ion content in the raw water is extremely high. The diagnosis may be as follows:
1 If the iron or ferrous ion in the raw water is excessively high, it must be solved from the pretreatment. Increase the iron removing device 2. If the iron ion in the raw water is not a problem, make sure that the pipeline is clean before the system is running, and clean the pipeline before putting it into operation. Whether the system or the pre-treatment treatment tank has or has not been lined with glue 4 Pre-treatment chemicals are over-absorbed 5 System design Initially there is a coagulation process, if there is any residual flocculant 6 Manganese content in raw water Whether the ultra-high security filter filter rust is likely to contaminate the filter element, failing to achieve the treatment effect and further affecting the reverse osmosis water quality. Frequent replacement of filter elements increases operating costs, and can easily cause fouling of reverse osmosis membranes, affecting the operation of reverse osmosis systems. Therefore, if the security filter element is replaced frequently, it is necessary to find the cause and solve the problem in time.
If rust occurs in the filter element of the security filter or the color of the rust during the operation of the system, it is first necessary to confirm whether the iron ion content in the raw water is extremely high. The diagnosis may be as follows:
1 If the iron or ferrous ion in the raw water is excessively high, it must be solved from the pretreatment. Increase the iron removing device 2. If the iron ion in the raw water is not a problem, make sure that the pipeline is clean before the system is running, and clean the pipeline before putting it into operation. Whether the system or the pre-treatment treatment tank has or has not been lined with glue 4 Pre-treatment chemicals are over-absorbed 5 System design Initially there is a coagulation process, if there is any residual flocculant 6 Manganese content in raw water Whether the ultra-high security filter filter rust is likely to contaminate the filter element, failing to achieve the treatment effect and further affecting the reverse osmosis water quality. Frequent replacement of filter elements increases operating costs, and can easily cause fouling of reverse osmosis membranes, affecting the operation of reverse osmosis systems. Therefore, if the security filter element is replaced frequently, it is necessary to find the cause and solve the problem in time.
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