The problem that the sludge is too thin after municipal sludge compaction, the moisture content is as high as 83%, and the sludge compaction is not formed may be caused by a variety of factors. The following is a detailed analysis of this problem and the corresponding solution:

Cause analysis

Sludge properties:

Municipal sludge usually contains a large amount of water, microorganisms and organic substances, and the characteristics of these components directly affect the dehydration effect of the sludge.

When the solid content in the sludge is too low, such as less than 1%, the dehydration effect will not be ideal.

Processing process:

The performance and maintenance status of sludge dewatering equipment have an important impact on the dewatering effect.

The dehydrating agent used does not match the properties of the sludge and cannot effectively break the wall of the sludge cells, resulting in insufficient pressure filtration of water.

Improper operation:

Improper setting of the operating parameters of the sludge filter press, such as insufficient pressure and too fast feeding speed, will affect the dehydration effect.

Improper selection, cleaning and replacement of filter cloth will also affect the dewatering effect of sludge.

Environmental factors:

The change of climate and season will affect the moisture content of sludge.

Poor storage and transportation conditions of sludge may also lead to an increase in sludge moisture content.

Solution

Improve sludge properties:

Before the sludge enters the filter press, pre-treatment is carried out, such as adding agents such as oxidants, to improve the properties of the sludge.

Build a sludge thickening tank, increase the sludge concentration to a suitable range (such as 3.5%~11%), and then send it to the filter press for dehydration.

Optimization process:

Select the sludge dehydrating agent that matches the sludge properties to improve the dewatering effect.

Regular maintenance and maintenance of sludge dewatering equipment to ensure its normal operation.

Adjust the operating parameters of the sludge filter press, such as increasing the pressure, adjusting the feeding speed, etc., to improve the dehydration effect.

Standard operation:

Strengthen the training of sludge filter press operators to improve their operational skills.

Clean and replace the filter cloth regularly to keep the filter cloth clean and unobstructed.

Improving environmental factors:

Try to avoid sludge treatment in a humid environment to reduce the increase of sludge moisture content.

Improve the storage and transportation conditions of sludge, and reduce the moisture content of sludge during storage and transportation.

In summary, in view of the problems that the sludge is too thin after the municipal sludge is pressed, the moisture content is as high as 83%, and the sludge is not formed, it is necessary to comprehensively consider and treat the sludge from many aspects, such as the property of the sludge, the treatment process, the operation specifications and the environmental factors. By taking the above measures, the moisture content of sludge can be effectively reduced, and the dewatering effect and treatment efficiency of sludge can be improved.