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What happens when too much polyaluminum chloride is added

Polyaluminum chloride is a commonly used coagulant used in water treatment, which can effectively remove suspended solids, organic matter, and heavy metal ions in water. However, if too much polyaluminum chloride is added, it may bring some negative effects.

Firstly, when the dosage of polyaluminum chloride exceeds a certain range, due to the limited ability of the agent to combine with pollutants in water to form flocculants, the excess agent becomes dissolved and cannot combine with pollutants. This will lead to a weakened precipitation effect of polyaluminum chloride, and the suspension and organic matter in water cannot be effectively removed.

Secondly, polyaluminum chloride is a costly agent, and excessive use can increase the cost of the agent. In addition, the excess of chemicals will also increase the dosage of coagulants during the treatment process, further increasing the treatment cost.

In addition, the main component of PAC is aluminum, and excessive use can lead to an increase in the content of dissolved aluminum. High concentrations of dissolved aluminum may lead to deterioration of water quality and have certain toxic effects on soil and aquatic organisms. If the residual aluminum material during the treatment process is not completely removed, it may have a negative impact on the irrigation water quality of farmland and limit the normal growth of plants. In addition, excessive addition of polyaluminum chloride will consume a large amount of alkali in the water, causing the pH value of the water to be slightly acidic. Therefore, additional alkali needs to be added for neutralization in the later stage of wastewater treatment.

In addition, the extensive use of polyaluminum chloride can also affect the taste and odor of water, thereby affecting its drinkability. It will produce a large amount of chloride in water, leading to changes in the taste and odor of the water. Meanwhile, the extensive use of polyaluminum chloride can also lead to the accumulation of residues in water and a significant increase in mercury ions, thereby affecting water quality.

Therefore, when using polyaluminum chloride, an appropriate amount should be added according to the actual situation to avoid the negative effects caused by excessive addition. Meanwhile, polyaluminum chloride products with stable quality and compliance with standards should be selected to ensure treatment effectiveness and safety.

Thank you for your attentionHenan aierfuke Chemical Co., Ltd：Focus on water treatment, only for the healthy world! Our company is committed toPolyaluminium chloride、Polyferric sulfateThe R & D, manufacturing and sales of series of water purification materials are willing to create success with our customers and friends.