Effect of Carbon Powder Skeleton Construction on Thickening and Dewatering of Air Floating Sludge
In order to improve the sedimentation and concentration effect of air floating sludge in a water plant,the pretreatment with dosing was carried out before the sludge concentration treatment.Through exploring the different PAM dosage and different proportions of charcoal powder and PAM to adjust the air floating sludge,the best value of dosage was found.The experimental results showed that when the mass ratio of carbon powder to PAM was 3:1,the settling time of sludge was reduced from the initial 4.00 h to 0.82 h.The combination of coal-based charcoal powder and PAM improves the settling and concentration performance of air-based sludge mainly through the huge specific surface area of coal-based charcoal powder itself and the adsorption and bridging net trapping ability of PAM.