EFFECT OF PREOZONATION IN DRINKING WATER TREATMENT USING POLYAMINE
FLOCCULANT

Joo, Duk Jong; Kim, Jung Young; Shin, Won Sik; Lee, Seok Hun; Kim, Young Hun; Lee, Ju Dong; Choi, Sang June

doi:2002.7.4.191

Environmental Engineering Research 2002;7(4): 191-198. DOI: https://doi.org/10.4491/eer.2002.7.4.191

EFFECT OF PREOZONATION IN DRINKING WATER TREATMENT USING POLYAMINE FLOCCULANT

Duk Jong Joo¹, Jung Young Kim¹, Won Sik Shin², Seok Hun Lee¹, Young Hun Kim¹, Ju Dong Lee¹, and Sang June Choi¹^†

¹Department of Environmental Engineering KyungPook National University, Daegu 702-701, Korea
²School of Civil, Environmental and Architecteral Engineering, Kumoh National Institute of Technology, Gumi, Kyungpook 730-701, Korea

Corresponding Author: Sang June Choi ,Tel: +82-53-950-6582, Fax: +82-53-950-6579, Email: sjchoi@knu.ac.kr

Received: May 16, 2002; Accepted: August 16, 2002.

ABSTRACT

The effects of preozonation and synthetic polyamine flocculant on the removal of turbidity, TOC (total organic carbon) and UV254 in drinking water treatment were investigated. The preozonation was tested using two treatments: i) conventional treatment using inorganic coagulant alone, ii) improved coagulation using the polyamine flocculants in combination with inorganic coagulant. The effects of ozone concentration, contact time and polymer dosage on the removal of organic compounds were investigated via both jar and pilot tests. Preozonation significantly increased the removal of turbidity, TOC and UV:54 at all treatment levels investigated (1, 2 mg/L for ozone, and 0.3 — 1.5 mg/L for polyamine flocculant). The optimum ozone concentration and polymer flocculant dose were about 1 mg/L (ozone contact time: 10 min) and 0.8 mg/L, respectively. The results of laboratory and pilot-plant studies indicate that preozonation has a synergistic effect on the removal of turbidity, TOC and UV254 in Nak-Dong river water treatment using a polyamine flocculant.

Keywords: polyamine flocculant | preozonation | TOC | turbidity | UV254