The sludge lobe pump has a small footprint, no winding, no blockage and is resistant to wear and tear, and is therefore more suitable for processes such as sludge treatment stations in sewage plants, primary settling tank sludge, residual sludge from high efficiency settling tanks, flowback sludge and thickened sludge (sludge feed). The following is a specific introduction.
1. Primary sedimentation tank sludge
Primary sedimentation tank sludge moisture content is generally between 98% and 96%, depending on the operation of the primary sedimentation tank discharge, and organic matter is generally between 55% and 70%.
2. Residual sludge
The residual sludge has a water content of 99.5%-99.2% and the organic matter is generally in the range of 70%-85%.
3. Chemical sludge
Chemical sludge refers to the sludge formed in the mixed coagulation and sedimentation process (chemical phosphorus removal), the nature of which is related to the flocculant.
4. Sludge in the dewatering room
With a centrifugal dewaterer, a sludge cutter is required to dispose of the long flocs, but with a sludge lobe pump, no clogging problems arise. A reduction in wear and tear can be achieved. Thickened sludge with an output moisture content of around 97% - 98%
PAM (polyacrylamide) is now commonly used, with a low dosage, the amount of sludge is basically unchanged and the modulation effect is good. PAM is divided into anionic and cationic types, and sludge conditioning is generally cationic, with a general dosage of 0.25-5kg/t dry solids.