That is, when inorganic flocculants and organic anions are used to prepare an aqueous solution and added to the wastewater, a compressed double electric layer will be produced, which will make the suspended particles in the wastewater lose stability, and the colloidal particles will agglomerate with each other to increase the particles, forming flocs and alum. After the floc has grown to a certain volume, it will separate from the water phase and settle under the action of gravity , thereby removing a large amount of suspended matter in the wastewater, thereby achieving the effect of water treatment. In order to improve the separation effect, a coagulant can be added in a timely and appropriate amount .

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