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Adjusting the pH value of water with polyaluminum chloride

Polyaluminum chloride (PAC) is a commonly used water treatment agent used for coagulation and flocculation of suspended particles in water, thereby improving water quality. It can also adjust the pH value of water, but usually its main function is to form flocculent substances in the water, promoting the precipitation of suspended particles.

When using polyaluminum chloride for water treatment, it usually affects the acid-base balance of water, thereby affecting its pH value. The specific adjustment of water pH value will depend on the initial pH value of the water, its composition, and the type and amount of polyaluminum chloride used.

Test initial pH value: Before adding polyaluminum chloride, first test the initial pH value of the water to understand the degree of adjustment needed.

Add polyaluminum chloride: Add an appropriate amount of polyaluminum chloride to water. The specific amount will depend on the quality of water and the required flocculation effect. Add according to the guidance provided by the manufacturer or the advice of professional water treatment personnel.

Stirring and mixing: Mix water and polyaluminum chloride to ensure uniform distribution.

Waiting for sedimentation: The addition of polyaluminum chloride may lead to the formation of flocculent substances, which will precipitate to the bottom of the water. Wait for a certain amount of time, usually a few minutes to several hours, in order to coagulate and precipitate.

Test the final pH value: Test the pH value of the treated water. If necessary, further adjustment can be made, but be careful not to over adjust.

Please note that the use of polyaluminum chloride requires caution and should be adjusted and monitored according to specific circumstances to ensure that the water quality meets expected standards. It is best to operate under the guidance of professional water treatment personnel to ensure safety and effectiveness.

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