How to solve the problem of excessive nitrate in the treatment of pure water equipment in the electr

How to solve the problem of excessive nitrate in the treatment of pure water equipment in the electronics industry?

by:Ocpuritech     2021-03-26
How to solve the problem of excessive nitrate in the treatment of pure water equipment in the electronics industry? Author: electronics cleaning standards are high technology design equipment used in water lines, which demand high standards of water quality due to the electronic field applied to clean water equipment, reverse osmosis membrane technology is one of the best , Electronic cleaning pure water equipment should use low-carbon stainless steel or other materials that have been verified to not pollute water quality. Purified water refers to the water quality that has been removed or reduced to a certain degree from the salts (mainly strong electrolytes dissolved in water), then what should be done if the nitrate in the purified water exceeds the standard? 1. Check the source water: if it is groundwater, the nitrate exceeds the standard It is not surprising, because groundwater nitrate will be higher, but river water and surface water will not, change the water source or do special treatment in the pretreatment stage; 2. Check whether the membrane is contaminated by microorganisms, because the nitrate exceeds the standard. It is possible that the membrane is contaminated. At this time, we need to use the equipment according to the use of the equipment. If it is a new system, it is recommended to take water continuously and then check in time periods. Generally, according to the pollution situation, if it is not serious, this problem will be solved; 2. Yes, if we do not use the equipment for a long time, and the equipment is very aging, we should use 2% sodium hydroxide solution to fully disinfect the membrane elements and pipelines, which can generally solve the problem; 3. Check the pretreatment filter material , It is recommended to pasteurize the filter material. If the life cycle of the filter material is almost the end, it is recommended to replace the filter material to fully disinfect the filter tank; 4. The ion exchange mixed bed and EDI device can be added, which can effectively reduce the removal Nitrate ion. The above is the solution introduced by the editor for over-standard nitrate in purified water. For the electronic cleaning pure water equipment editor, I suggest you understand how to solve the water supply problem of the electronic industry pure water equipment.
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