TAILIEUCHUNG - Application of Ferrate as Coagulant and Oxidant Alternative for Purifying Saigon River Water

In this study, we aimed to use ferrate as an all-in-one alternative for the removal of chlorine-consumed compositions such as organic, color, turbidity, iron, and manganese in river water for water supply purposes. Ferrate (FeO42-) was simultaneously employed as coagulant and oxidant for purification of Saigon River water in order to reduce the formation of disinfection byproducts in the produced tap water. | VNU Journal of Science Earth and Environmental Sciences Vol. 36 No. 4 2020 1-7 Original Article Application of Ferrate as Coagulant and Oxidant Alternative for Purifying Saigon River Water Tran Tien Khoi1 Nguyen Dang Hoang Chuong2 Hoang Gia Phuc1 Nguyen Thi Thuy3 Nguyen Nhat Huy2 1 International University Vietnam National University Ho Chi Minh City 6 Linh Trung Thu Duc Ho Chi Minh Vietnam 2 Ho Chi Minh City University of Technology Vietnam National University Ho Chi Minh City 268 Ly Thuong Kiet Ward 14 Ho Chi Minh Vietnam 3 Ho Chi Minh City University of Food Industry 140 Le Trong Tan Tay Thanh Ho Chi Minh Vietnam Received 06 August 2019 Revised 09 December 2019 Accepted 17 December 2019 Abstract In this study we aimed to use ferrate as an all-in-one alternative for the removal of chlorine-consumed compositions such as organic color turbidity iron and manganese in river water for water supply purposes. Ferrate FeO42- was simultaneously employed as coagulant and oxidant for purification of Saigon River water in order to reduce the formation of disinfection by- products in the produced tap water. The Jartest was conducted using both ferrate for raw river water and poly-aluminum chloride PAC for chlorinated water to determine the optimum concentration of chemicals and pH values as well as comparing the effectiveness of ferrate and traditional coagulation with pre-chlorination technology for surface water purification. Results showed that ferrate could be used to remove organic compounds with high efficiency of at pH 5 - 6 and ferrate concentration of 16 mgFe L. Moreover the removal efficiency for turbidity color and iron were at least 90 indicating that ferrate would be a very promising alternative for chlorine and PAC for water purification. Keywords ferrate natural organic matters removal water purification DBPs control. 1. Introduction is using by Tan Hiep Water Treatment Plant THWTP in Ho Chi Minh City Vietnam for Saigon River is the main source for tap .

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