Use of post-coagulation sludge to decrease polymeric aluminium chloride dose during treatment of water with high concentration of dissolved organic compounds

作者：Guminska Jolanta^*; Guminski Adam

来源：Przemysl Chemiczny, 2015, 94(1): 81-84.

Tap water was coagulated with polymeric Al chloride (PACl) and Al-2(SO4)(3) at 20 degrees C (Al dose 1,1-3,3 mg/L). The postcoagulation sludge was sepd. by sedimentation and recycled to the original water. Zeta potential was detd. before and after sludge addn. to the water sample. Humic acids-contaminated water (an artificial sample) was coagulated with PAC. The purifn. was followed by detn. of UV absorbance at 254 nm and turbidity. Recycling of the postcoagulation sludge resulted in decreasing the coagulant consumption.

• 出版日期2015-1