To solve the problems of long mud feeding time and high water content of mud cake, it can be solved from many aspects such as sludge treatment process, agent selection, equipment operation and maintenance, and environmental factors. Here are some specific solutions:
One. Optimization of sludge treatment technology
Increase press pressure:
In the process of sludge dewatering, the moisture content of mud cake can be significantly reduced by increasing the pressing pressure. For example, high-pressure dehydration techniques such as diaphragm pressing can reduce the moisture content of sludge cake to a lower level.
Optimization of flocculation conditions:
The flocculation effect directly affects the dewatering performance of sludge. The flocculation conditions should be re-evaluated, including the selection and dosage of flocculants, stirring intensity and settling time.
Selecting the appropriate flocculant and optimizing its dosage, while ensuring the moderate stirring intensity, can significantly improve the flocculation effect of sludge, and then reduce the moisture content of mud cake.
Use of sludge conditioner:
The sludge conditioner can change the surface structure of the sludge, reduce the solid surface load and specific surface area of the sludge, destroy the bacterial structure, and improve the dewatering performance of the sludge.
The moisture content of mud cake can be significantly reduced by selecting suitable sludge conditioner for pretreatment.
Two, improve the use of drugs
Select the right type of agent:
Avoid choosing the wrong type of agent to lead to poor flocculation effect of sludge.
Insufficient dosage of chemicals will lead to poor dehydration effect and high moisture content; However, excessive addition of chemicals will lead to sticky sludge, adhesion or blockage of filter cloth.
Control dosage:
According to the nature of the sludge and treatment needs, the amount of additives is precisely controlled to ensure the best dewatering effect of the sludge.
Three, strengthen equipment operation and maintenance
Ensure the normal operation of the equipment:
Regularly inspect and maintain the dewatering equipment, including cleaning the filter, checking the sealing performance, etc., to ensure that the equipment is operating in the best condition.
Optimize equipment operating parameters:
According to the characteristics of the sludge, adjust the operating pressure and filtration time of the filter press to ensure that the mud cake is fully dehydrated.
For different types of sludge, choose the appropriate dewatering equipment, such as high-efficiency dewatering equipment such as high-pressure sludge filter press.
Select the right filter cloth:
According to the size of the sludge particles, select the filter cloth with the appropriate pore size to improve the compactness of the mud cake.
Clean and replace the filter cloth regularly to prevent clogging and wear from affecting the dehydration effect.
Four. Consider environmental factors
Adjust pH and temperature:
The dewatering performance of sludge is affected by environmental factors such as pH value and temperature. In actual operation, these factors should be fully considered and corresponding measures should be taken to adjust and optimize.
Control REDOX potential:
Too high or too low REDOX potential in wastewater may cause the sludge to lose stability and affect the dehydration effect. Therefore, the REDOX potential of wastewater treatment system should be controlled within the appropriate range.
V. Comprehensive measures
Enhanced sludge pretreatment:
By strengthening the pretreatment of sludge (such as flocculation, precipitation, etc.), the properties of sludge can be stabilized and the dewatering performance of sludge can be improved.
Optimization of sludge transfer system:
Improve the design and operation of the sludge conveying system to reduce the residence time and water loss of the sludge during the conveying process, thereby improving the dewatering efficiency of the sludge.
Focus on environmental protection and sustainability:
When selecting agents and equipment, its impact on the environment and subsequent sludge disposal methods should be considered. Avoid the waste of other energy or secondary pollution caused by the reduction of sludge.
In summary, to solve the problems of long time of mud injection and high water content of mud cake, comprehensive treatment should be carried out from many aspects. By optimizing sludge treatment technology, improving the use of chemicals, strengthening equipment operation and maintenance, considering environmental factors and taking comprehensive measures, the water content of mud cake can be effectively reduced and the dewatering efficiency of sludge can be improved.