How to reduce the moisture content of screw sludge press sludge?

 

The methods to reduce the moisture content of sludge after screw sludge press treatment mainly include the following aspects:

Optimize equipment operating parameters:

Adjusting the speed of the screw shaft: Appropriately reducing the speed of the screw shaft can prolong the residence time of sludge in the screw sludge press, allowing the sludge to be more fully squeezed and thus improving the dewatering effect.

Increase the pressure of the back pressure plate: Within the allowable range of the equipment, gradually increase the pressure of the back pressure plate to enhance the squeezing effect on the sludge and promote the discharge of more water from the sludge.

How to reduce the moisture content of screw sludge press sludge?

Improving sludge pretreatment:

Sludge conditioning: Before the sludge enters the screw sludge press, an appropriate amount of conditioning agent such as lime, diatomaceous earth, etc. can be added to improve the properties of the sludge, reduce its viscosity, and enhance its dewatering performance.

Sludge concentration: Pre concentration treatment of sludge can be carried out using methods such as gravity concentration and air flotation concentration to increase the solid content of sludge, reduce the moisture content in sludge, and lower the processing load of screw sludge press, thereby improving the dewatering effect.

Strengthen equipment maintenance management:

Regularly clean the filter screen: The filter screen of the screw sludge press is prone to clogging during use, which affects the dehydration effect. Regularly clean the filter screen by using high-pressure water gun flushing, chemical cleaning and other methods to maintain its permeability and ensure smooth drainage of moisture.

Check equipment components: Regularly inspect the wear of spiral shafts, dynamic and static rings, and other equipment components, replace severely worn components in a timely manner, ensure the normal operation and squeezing effect of the equipment, and reduce insufficient dehydration caused by equipment failures.

Choose the appropriate flocculant:

Selecting appropriate types and dosages of coagulants for different types of sludge can improve the flocculation effect of sludge and thus affect its dewatering performance.

Preprocessing techniques:

For sludge containing a large amount of organic matter, pretreatment techniques such as chemical conditioning, biological conditioning, etc. can be used to improve the dewatering effect of the sludge.

Through the above methods, the moisture content of the sludge after screw sludge press treatment can be effectively reduced, the dewatering effect of the sludge can be improved, and the difficulty and cost of subsequent treatment can be reduced.

 

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