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What is reverse osmosis? What is the OR film? 2.The principle of reverse osmosis: First of all, we must understand the concept of infiltration.Penetration is a physical phenomenon.When two kinds of water containing different salts, such as separated by a semi-permeable film, it will be found that the water on one side with less salt content will penetrate through the membrane into the water with high salt content, the salt contained does not penetrate, so that the salt concentration on both sides is gradually merged to equal.However, it takes a long time to complete this process, also known as penetration pressure.However, if a pressure is added on the water side with high salt content, the result can also stop the above penetration. The pressure at this time is called penetration pressure.If the pressure increases again, it can penetrate in the opposite direction, while the salt is left.Therefore, the principle of reverse osmosis salt removal is to apply more pressure than natural penetration pressure in sal

How to treat industrial wastewater? Summary of 14 industrial wastewater treatment processesSurface treatment wastewater1. polishing and polishing wastewaterIn the process of polishing and polishing the parts, due to the existence of abrasive and polishing agents, the main pollutants in industrial wastewater are COD, BOD and SS.Generally, the following processing process can be used for processing:Wastewater → regulation pool → coagulation reaction tank → sedimentation tank → hydropickling pool → aerobic pool → two sedimentation tank → filtration → emission2. degreasing wastewaterThe common skim processes are: organic solvent skim, chemical skim, chemical skim, ultrasonic skim. In addition to organic solvent degreasing, other skim processes are composed of skim agents containing alkaline substances, Surface Active Agents, corrosion inhibitors, etc, the main pollutants in wastewater are pH, SS, COD, BOD, petroleum, chroma, etc.Generally, the fol
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