Recently, many customers mentioned in the consultation hotline that the sludge sticks to the filter cloth when applying the sludge filter press to remove the sludge, which makes it impossible to maintain the actual effect of drying. Why? The terminal equipment for wastewater treatment is sludge dewatering. It can be easily understood as turbid mortar. According to the addition of polyacrylamide (commonly known as PAM coagulant), the sludge in the mortar can be quickly clumped in the inclined plate sedimentation tank. Nearly 90% of the filter cloth of the filter press is recycled or discharged, and the dried sludge can be immediately landfilled or mixed with raw coal for incineration.
The analysis of the difficult problems of sticky filter cloth during sludge dewatering consists of the following three points:
1. The selection of polyacrylamide model is not suitable, which makes the mud water indispensable in the whole process of sludge dewatering. The Capitel Chemical Plant in Dongguan City, Guangdong Province is an enterprise that professionally displays polyacrylamide model selection service items, and can choose more usable Polypropylene pp milling amine to ensure that the filter cloth will not be stained when pressing the mud. Sludge dewatering filter cloth
2. The ionization degree of PAM (positive ion polyacrylamide) specially selected for desliming is too high, which causes the viscosity of the sludge to expand, and blocks the leakage holes of the filter cloth according to the filter cloth, causing incomplete desliming or sticking to the filter cloth.
3. Too much dosing causes the water body to become sticky. After the polyacrylamide melts, the sludge will produce longer and more molecular structure carbon bonds encapsulated slurries particles, and produce a sloping plate sedimentation pool. If too much dosing, the water and sludge The increase in viscosity is very easy to cause clogging of the filter cloth.