Sludge treatment is a key link in the wastewater treatment process, and reducing the moisture content of sludge is the core goal of improving the efficiency of subsequent treatment and reducing transportation and disposal costs. Municipal sludge and papermaking sludge are difficult to treat due to their complex composition and high moisture content (usually reaching 80% to 95%). Sludge enhancers can significantly reduce the moisture content and enhance the treatment efficiency by improving the dewatering performance of sludge.

The mechanism of action of sludge enhancers

Sludge enhancers are a type of chemical or biological agents that mainly improve the dewatering performance of sludge through the following methods:

Youdaoplaceholder0 Charge neutralization effect ‌ : By neutralizing the negative charges on the surface of sludge particles, it reduces the repulsive force between particles and promotes flocculation.

Youdaoplaceholder0 Flocculation effect ‌ : Through the bridging effect of high-molecular polymers, larger flocs are formed, improving the efficiency of solid-liquid separation.

Youdaoplaceholder0 Break the bound water structure ‌ : Break the colloidal structure in sludge, release bound water, and improve the dewatering effect.

Application in Municipal Sludge Treatment

In municipal sewage treatment plants, sludge enhancers are usually used in combination with mechanical dewatering equipment such as plate and frame filter presses and centrifugal dewatering machines.

Experimental data show that:

After adding the sludge efficiency enhancer, the moisture content of the sludge can be reduced from 95% to 60%-70%, significantly reducing the volume of sludge. The cost of sludge treatment is reduced by approximately 20%, and the transportation cost is decreased by 30%.

Application in the Treatment of Papermaking Sludge

Papermaking sludge is more difficult to dewater due to its rich cellulose and fillers (such as calcium carbonate and kaolin). The application effects of sludge enhancers are as follows:

By optimizing the proportion of sludge enhancers, the moisture content of papermaking sludge can be reduced from 90% to below 65%.

Sludge enhancers have demonstrated remarkable effects in reducing moisture content in municipal and papermaking sludge treatment, which can optimize the treatment process and lower costs.