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What are the precautions for maintaining industrial pure water equipment?

2020-02-12View Original

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  To properly carry out the pretreatment of reverse osmosis equipment, it is necessary to configure pretreatment devices based on the quality of the raw water. All steps are closely interrelated; the effectiveness of one treatment process can affect the subsequent processes, and even the final water quality and performance. Therefore, it is necessary to clarify the water quality target requirements handled by each unit.   For the maintenance of multi-media filters, scrubbing and backwashing are crucial. The water level during scrubbing must be appropriate; there must be sufficient and adequate airflow. The backwash flow rate also needs to be properly controlled, and the process must be thorough. Filters that have been out of service for an extended period need to undergo proper maintenance during that time; microfiltrators serve as the final line of defense for raw water, and it is necessary not only to monitor the pressure difference between the inlet and outlet but also to pay attention to the quality of the filter elements.   Under normal operating conditions, reverse osmosis membranes can also become contaminated by inorganic fouling, colloids, microorganisms, etc. The impurities deposited on the surface reduce the desalination efficiency, increase the pressure difference, and cause damage to the membrane; therefore, chemical cleaning of the membrane is necessary to preserve its performance and extend its service life. It is generally cleaned every 3-12 months. There are two cleaning methods: online cleaning and offline cleaning. Online cleaning involves using cleaning equipment to clean the membrane elements throughout the entire system; it is easy to operate and takes little time. Offline cleaning requires removing each membrane element individually for cleaning; this method ensures thorough cleaning but takes more time.   During long-term operation, reverse osmosis equipment may inevitably experience some minor malfunctions due to improper use. For instance, residual gas remaining in the equipment can cause water hammer under high-pressure conditions, thereby damaging the membranes; similarly, incorrect shutdown procedures may result in incomplete flushing.   Laitread has adopted remote work; we are available 24/7 to answer calls and help resolve your issues!
Reply #22020-02-12
Got it, thank you, OP, for sharing

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