Purification of drinking water

For standardized water that cannot meet the quality of life, there are three levels of water purification treatment measures. In general, the water needs to be clarified (including precipitation, filtration) and then disinfected. When the turbid water is treated by a simple natural precipitation method, the precipitation rate of the suspended particles of the fine particles is very slow, and the colloidal substance cannot be removed at all. The coagulant can be added before the water flows into the sedimentation tank to accelerate the precipitation of the fine particles. At this time, it reacts with calcium and magnesium salts in the water to form a flocculent gel, which can adsorb suspended matter and colloidal particles in water, and can adsorb some bacteria and dissolved substances in water, and can also contain huge molecular organic matter. sink. The precipitated water is filtered and chlorinated.

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