In view of the problems of long time and thin mud cake in plate and frame sludge decentalization cake, the following are some possible causes and corresponding solutions:
Reasons and solutions for long mud feeding time
Cause
Low sludge concentration: Too low sludge concentration will lead to prolonged sludge feeding time, because more sludge is needed to achieve the desired filter effect.
Feed system problem: The feed system is unstable or the feed speed is too slow, which will also affect the mud time.
Equipment failure: Some parts of the plate and frame filter press fail, such as feed pumps, valves, etc., which may also lead to prolonged mud feeding time.
Solution
Increase sludge concentration: increase sludge concentration by increasing sludge thickening equipment or optimizing sludge conditioning process, thus shortening sludge inlet time.
Optimize the feed system: ensure that the feed system is stable and reliable, adjust the feed speed to adapt to the processing capacity of the filter press.
Regular inspection and maintenance of equipment: regular inspection and maintenance of the plate and frame filter press and its auxiliary equipment, timely detection and repair of faults.
Causes and solutions of thin mud cake
Cause
Fast filtration speed: If the filtration speed is too fast, the solid phase particles of the mud can not be condensed, and a thinner mud cake will be formed.
Improper strain of filter cloth: insufficient or excessive strain of filter cloth may affect the formation quality of mud cake.
Insufficient filter aid: Filter aid helps to condense mud solid particles, and insufficient dosage will cause mud cake to be too thin.
Equipment problems: Some parts of the plate and frame filter press, such as the filter plate and filter frame, are damaged or worn, which may also cause the mud cake to be too thin.
Solution
Adjust the filtration speed: By adjusting the filtration speed of the filter press, the mud solid particles have enough time to condense and form a thicker mud cake.
Adjust the tension of the filter cloth: Adjust the tension of the filter cloth according to the actual situation and keep it in a suitable range to ensure the formation quality of the mud cake.
Adding filter auxiliary agent: According to the actual situation, add the appropriate amount of filter auxiliary agent to help the mud solid particles better condense.
Check and replace damaged parts: Check all parts of the plate and frame filter press regularly, and replace damaged or worn parts in time.
In summary, it is necessary to solve the problems of long time and thin mud cake for plate and frame sludge descementing cake from multiple aspects. The efficiency and quality of sludge dewatering can be effectively improved by optimizing sludge treatment process, adjusting operating parameters of filter press and strengthening equipment maintenance.