Want ultra-pure water to stabilize the operation, in the course of daily operation of ultra-pure water in it must take certain precautions to ensure ultra pure water to work properly, and some items can not be ignored, avoided ultrapure water What is the impact of the machine , so what should be paid attention to in the daily operation of the ultra-pure water machine ?
1. The mechanical filter of the ultra-pure water machine is backwashed regularly . When the backwash is carried out, the compressed air gas is rubbed. After the backwash is passed, it is allowed to stand for about 10 minutes and then washed. After the water is qualified, it can be put into use. Do not bring the air into the reverse. Infiltration. Without affecting the sdi value, the operating time of the mechanical filter is extended as much as possible, which not only reduces the impact of the switching filter on the effluent water quality, but also saves a lot of backwashing water.
　　 2. Regularly inspect and timely replace the precision filter element to prevent particle contamination of the reverse osmosis membrane caused by leakage of the filter element due to installation or quality problems. When the pressure difference of the inlet of the precision filter is greater than 0.15mpa, the filter element should be replaced. Generally should be Check once a month, replace the filter element once every 2 to 3 months. Always check the gas in the precision filter during operation, and do not let the air into the reverse osmosis membrane. For precision filters that are used for standby or long-term shutdown, The method of formaldehyde protection prevents the bacteria from multiplying.
　　 3. The inlet pressure of the pressure pump should be at least 0.05mpa to prevent the air or the pre-removed filter from being pumped into the reverse osmosis membrane by the high pressure pump.
　　 4, the ultra-pure water machine should be stopped at regular low pressure , especially in summer, should be washed once per shift. If the outage time is greater than 7 days, 0.5% to 1% sodium bisulfite or 0.5% to 1 should be used. The % formaldehyde solution protects the reverse osmosis membrane and should detect the pH and concentration of the protective solution in time.
　　 5. Regularly analyze the water quality of the feed water, adjust the dosage of the flocculant, bactericide, reducing agent and scale inhibitor according to the actual situation. Prevent the flocculant from penetrating the filter and the scale inhibitor to affect the scale inhibition effect, or Contaminated reverse osmosis membrane; prevent the amount of bactericide from being insufficient to cause the reverse osmosis membrane to be contaminated by bacteria, or the membrane is oxidized due to excessive bactericide; preventing the scale inhibitor from being insufficient to cause fouling of concentrated water and causing chemical contamination of the membrane.
　　 6. When the normalized reverse osmosis unit produces 10% less water, or the salt content of the produced water increases significantly under certain conditions, or the pressure difference increases by 15%, the reverse osmosis membrane should be timely. Cleaning.
The introduction of what needs to be paid attention to in the daily operation of ultra-pure water machine is here. I hope to help everyone. We must pay attention to these matters in the daily operation of ultra-pure water machine . Ultra-pure water equipment will not be used for various reasons. A situation in which an accident does not work.
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