Author(s)

Defang Zeng, Yong Zhai, Shuisheng Zhang, Fujun Ding

Hubei Shilu Chemical Coat Company, Yingcheng, China.
School of Resource and Environmental Engineering, Wuhan University of Technology, Hubei Key Lab of Mineral Resource Processing and Environment, Wuhan, China.

By using polyaluminum chloride (PAC), chitosan (CTS) and montmorillonite (MM) as the main raw materials, a novel tap water flocculant had been prepared. The optimal mass proportion of this flocculant was 1 g·L^–1 chitosan:50 g·L^–1 PAC:3g·L^–1 MM = 30:11:7. Compared with the traditional polyaluminum chloride (PAC), the concentration of aluminum ion (Al³⁺) and suspended solids (SS) in the exit dropped 66.19% and 5.80% respectively, moreover, the cost was decreased by 9.95%. This flocculant was not only cheaper, but also provided improved flocculating function compared with traditional flocculant. The concentration of Al3+ in exit water was decreased greatly so the drinking water would be much safer.

Water Treatment; Composite Flocculant; Flocculant; Aluminum Ion

D. Zeng, Y. Zhai, S. Zhang and F. Ding, "Study and Application of a Novel Tap Water Flocculant," Journal of Environmental Protection, Vol. 3 No. 6, 2012, pp. 518-522. doi: 10.4236/jep.2012.36062.