The use of new sludge conditioner before municipal sludge dewatering is an efficient and environmentally friendly sludge treatment method. The following is a detailed analysis of the application of the new sludge conditioner before the dewatering of municipal sludge:

The role of new sludge conditioner

The new sludge conditioner mainly reduces the capillary length of the sludge by changing the colloidal structure of the sludge, thus significantly reducing the moisture content of the sludge. The conditioner can also form a stable floc structure between the sludge particles and improve the dewatering performance of the sludge.

Two, the advantages of new sludge conditioner

High efficiency dehydration: The new sludge conditioner can significantly improve the dewatering efficiency of sludge, shorten the dewatering time, and reduce the moisture content of mud cake.

Improve the quality of mud cake: After the use of new sludge conditioner, the dehydrated mud cake is more solid and dry, which is conducive to subsequent treatment, transportation and disposal.

Protection equipment: The new sludge conditioner has good surface activity, can form a film between the sludge and the dewatering equipment, reduce the friction resistance between the equipment, reduce equipment wear, and extend the service life of the equipment.

Reduce operating costs: Compared with traditional dewatering methods, the use of new sludge conditioner for dewatering has lower energy consumption and higher dewatering efficiency. In addition, due to less wear and tear on the equipment, the frequency of maintenance and replacement will also be reduced, further reducing operating costs.

Environmental benefits: The use of new sludge conditioners reduces the production of lime sludge, reduces the sludge increment, and thus reduces the pressure on the environment. At the same time, the sludge after conditioning is more convenient for resource utilization, which helps to achieve the reduction, harmfulness and resource of the sludge.

Three, the use of new sludge conditioner

 

Sludge pretreatment: The municipal sludge is pumped to the conditioning tank.

Agent dosing: the sludge conditioner and synergist are added to the conditioning tank respectively, and the reaction is fully mixed.

Dewatering treatment: The sludge is pumped into the ultra-high pressure press through the automatic high pressure pump for dewatering treatment.

Follow-up treatment: the filtrate is returned to the sewage system for treatment, reuse or discharge after reaching the standard; The dehydrated mud falls into the conveyor belt below and is concentrated to the discharge yard.

4. Application Cases of new sludge conditioner

A municipal sewage treatment plant decided to try to use a new type of sludge conditioner instead of lime for sludge deep dewatering treatment. After a one-month trial operation, the following results have been achieved:

Dewatering effect: The new sludge conditioner improved the dewatering effect of the sludge, and the water content of the mud cake was reduced by about 5%.

Environmental improvement: The new sludge conditioner reduces the production of lime sludge, reduces the sludge increment, reduces the pressure on the environment, and is also conducive to the subsequent treatment of sludge.

Cost savings: The new sludge conditioner shortens the dehydration cycle by about 10%, helping to reduce operating costs.

Five, precautions

Chemical selection: The nature of sludge is affected by sewage sources, sewage treatment chemicals and other factors, even the nature of sewage sludge in the same industry may be different. Therefore, it is necessary to select the agent according to the specific situation and select the right type of new sludge conditioner.

Dosage control: Too much or too little dosage of new sludge conditioner will have an important impact on the dehydration effect, and too much may also lead to waste and cost increase. Therefore, it is necessary to determine the accurate dosage by small test and pilot test before formal use.

In summary, the application of the new sludge conditioner before municipal sludge dewatering has significant advantages and practical effects. Reasonable selection and use of sludge conditioner can significantly improve the dewatering efficiency and quality of sludge, reduce the treatment cost and environmental pollution, and provide strong support for the resource utilization of sludge.