Author： Amirsardari Y. Yu Q. Williams P.
Publisher： Taylor & Francis Ltd
ISSN： 0959-3330
Source： Environmental Technology, Vol.18, Iss.11, 1997-11, pp. : 1143-1150
Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.
Abstract
Bench scale studies were conducted to evaluate the efficacy of pre-ozonation on the treatment of surface water in conjunction with simulated direct filtration. Water quality parameters including turbidity, total organic carbon (TOC), UV absorbance and manganese were investigated at different pH conditions. It was found that pre-ozonation followed by alum coagulation under acidic conditions resulted in a 30% reduction in turbidity when compared with the case of no ozonation treatment and coagulation without pH adjustment. There was a 64% reduction in coagulant usage in terms of turbidity reduction requirements. The optimal ozone dose for turbidity reduction was about 1.5 mg l−1. Total organic carbon was slightly reduced (about 10%) with ozonation and no pH adjustment and also slightly reduced (about 7%) at a lowered pH of 6 at ozone doses ranging from 0.0 to 7.16 mg l−1. With ozone doses ranging from 0.0 to 7.16 mg l−1, UV absorbance was reduced by about 24% by ozonation. The maximum manganese removal achieved was 97% at 1.2 mg l−1 ozone dosage.
Related content
By Abebe Lydia S. Chen Xinyu Sobsey Mark D.
International Journal of Environmental Research and Public Health, Vol. 13, Iss. 3, 2016-02 ,pp. :
Access to resources
Recommend
Access to resources