Research on Treatment Process for Chemical Agent VX Polluted Water by Enhanced Coagulation

Abstract:

The influences of coagulant species, dose, water turbidity, and pollution situation of raw water on the results of enhanced coagulation have been investigated targeted at water contaminated by chemical agent. Ferric trichloride and polymeric aluminum ferric chloride (PAFC) acted as coagulant, poly dimethyl diallyl ammonium chloride (HCA) worked as coagulant aid and paraoxon acted as simulation agent of chemical agent VX in this process. The results show that: enhanced coagulation process cannot remove effectively chemical agent (paraoxon) in raw water; the result of treatment by PAFC and PAFC+HCA is better than that by FeCl₃ and FeCl₃+HCA; the addition of certain amount of HCA based on the condition that coagulant has been added will improve removal rate of both chemical agent and turbidity; the bigger the turbidity of raw water is, the higher the removal rate of paraoxon will be.

• Periodical: Applied Mechanics and Materials (Volumes 361-363)
• Pages: 785-788
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.361-363.785
• Online since: August 2013
• Authors: Xiao Jie Wang, Xiao Jing Li, Shuang Wang, Yun Zhe Ji
• Keywords: Chemical Agent Vx Polluted Water, Enhanced Coagulation, HCA, PAFC, Paraoxon, VX

References

[1] Hou lian, Yin hongbo, Technology study on emergency treatment for safety of drinking water[J], Information of China Construction (Water-Industry Market), 2010(6): 10-13.

[2] Cheng zhenwen, Research and Countermeasures for algae pollution in Chaohu Lake[J], Technology of water treatment, 2003, 29(4): 247-248.

[3] Yao xuan, Treatment of high algae-laden water in ChaohuLake using HCA-1 cation clarificant[J], Technology of Water Treatment, 2002, 28(2): 120-121.

[4] Zhao lili, Liu wenjing, Comparison of Alage Removal Effect of Three Kinds of Flocculant[J], Guangdong Chemical Industry, 2011, 38(5): 69-71.

[5] Liu cheng, Gao naiyun, Cai yunlong, Study on Removal Effect of Organics from Huangpu River Water by Enhanced Coagulation[J], China water & Wastewater, 2006, 22(1): 84-87.