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Disadvantages of using lime + ferric chloride for deep dewatering of sludge

The sludge added with lime in the sludge dewatering process is not easy to burn and can only be landfilled, and now the sludge conditioner developed by Works Chemical has emerged, which can no longer add lime iron salt, and the dosage of three-in-one agent is also very low, and the cost will be reduced. When the sludge is dehydrated, only one agent needs to be added to achieve a better dewatering effect than adding lime iron salt. Now Works Chemical Xiaobian will take you to understand this product of sludge conditioner in detail.

Sludge conditioner is a characteristic polymer, as a drying agent in the sludge dewatering process, compared with traditional PAM flocculants, it can significantly reduce the water content of sludge, and completely or partially replace the inorganic flocculants and adjuster such as polyferric chloride, polyaluminum chloride, and lime used in the sludge deep dewatering process, so as to achieve real sludge reduction. At the same time, the properties of sludge and organic matter content are maintained, and the pH value and salt content of filtrate are not changed.

The main features of sludge conditioner:

1. with the sludge, the formation of fine, strong small floc, greatly reduce the specific resistance of the sludge dehydration process.

2. it can achieve rapid and continuous dehydration of sludge, achieve solid-liquid separation, reduce the moisture content of sludge and the purpose of real reduction.

3. all or part of the replacement of inorganic flocculants will not increase the salt content of the filtrate and improve the operating conditions of the sewage treatment plant.

4. is conducive to reducing anaerobic reaction calcification and overflow site scaling.