Author(s)

Man Chung Law, Hong Chua, Ka Po Cheng, Chi Wai Kan

Department of Civil and Structure Engineering, The Hong Kong Polytechnic University, Hong Kong, Chin.
Department of Civil and Structure Engineering, The Hong Kong Polytechnic University, Hong Kong, China.
Department of Industrial Centre, The Hong Kong Polytechnic University, Hong Kong, China.
Department of Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Hong Kong, China.

Raw water from the Yantian Reservoir in Southern China was used for this study. Several process parameters of biofiltration, temperature, media, empty bed contact time, ozone dosage and concentration of geosmin and MIB, were adopted in order to determine their effects. Experiments were conducted using the Taguchi method and 9 experiments were needed to obtain the best process parameter settings and parameter effects. The results of these experiments indicate the use of biological filtration as a method of geosmin and MIB removal, to be satisfactory. In addition, the results show that temperature impacts the removal rate of both geosmin and MIB. Useful insights into the effects of the filter media on such as, empty bed contact time, ozone dosage and concentration of geosmin and MIB were also obtained.

Taste and Odor; Water Quality; Design of Experiment; Taguchi Method

M. Law, H. Chua, K. Cheng and C. Kan, "Process Window Determination for Biofiltration by the Taguchi Method," Journal of Water Resource and Protection, Vol. 4 No. 10, 2012, pp. 831-837. doi: 10.4236/jwarp.2012.410095.