News center
Home - News Center
Which type of agent can replace lime and ferric chloride in sludge dewatering

To solve the problem of sludge treatment, we must first solve the problem of sludge dehydration. The deep dewatering of sludge refers to the dewatering method of conditioning the sludge, destroying the cell wall, releasing the bound water, adsorbed water and intracellular water, improving the dewatering performance of the sludge, and making the moisture content of the sludge after dehydration treatment reach below 60%. The more commonly used sludge conditioners are ferric chloride, lime and so on.

However, the sludge added with lime in the sludge dewatering process is not easy to burn, and can only be landfilled. Now the sludge synergist developed by Works Chemical has emerged, and it is no longer necessary to 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 is here to take a closer look at sludge enhancers.

Sludge enhancer is a characteristic polymer. As a drying agent in sludge dewatering process, compared with traditional PAM flocculants, it can significantly reduce the water content of sludge, completely or partially replace the inorganic flocculants and adjuster such as polyferric chloride, polyaluminum chloride and lime used in sludge deep dewatering process, and 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 characteristics of sludge synergist:

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.