Title :
Enhanced coagulation for low-turbidity and low-temperature source water
Author :
Zhang, Guangming ; Shi, Wenxing ; Kang, Xu ; Liu, Guangqi ; Jiang, Lihui
Author_Institution :
State Key Lab. of Urban Water Resources & Environ., Harbin Inst. of Technol., Harbin, China
Abstract :
Floc recycle and its various impacting factors were examined in order to treat low-turbidity, low-temperature water in a low-cost, high-efficiency way. The source water had a turbidity of ~1.5 NTU and temperature ranged 8-10°C. The results showed that sludge recycle was very effective and economic. The best turbidity range for the mixture was around 20 NTU and the best floe age was less than 3 d. With 50% new floe, the PAC dose could be as low as 5 mg/L; without new floe, the PAC dose was 10mg/L.
Keywords :
flocculation; mixtures; recycling; sludge treatment; turbidity; water conservation; PAC dose; coagulation; floc recycle; sludge recycle; temperature 8 degC to 10 degC; temperature source water; turbidity; Biomembranes; Coagulation; Economics; Recycling; Urban planning; Water conservation; Water resources; floc age; floc recycle; low-temperature; low-turbidity;
Conference_Titel :
Electric Technology and Civil Engineering (ICETCE), 2011 International Conference on
Conference_Location :
Lushan
Print_ISBN :
978-1-4577-0289-1
DOI :
10.1109/ICETCE.2011.5775144
