著者

大仲 孝昌 福島 幸生 末松 孝章

出版者

北海道大学衛生工学会

雑誌

衛生工学シンポジウム論文集

巻号頁・発行日

vol.9, pp.185-188, 2001-11-01

著者

船水 尚行 大仲 孝昌 高桑 哲男

出版者

Japan Society of Civil Engineers

雑誌

環境工学研究論文集 (ISSN:13415115)

巻号頁・発行日

vol.37, pp.345-354, 2000-11-13 (Released:2011-06-27)

参考文献数

8

被引用文献数

1

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The lab-scale experiments were performed to study suspended growth of heterotrophic bacteria and decay process of free and combined chlorine in reclaimed water. It was found that suspended growth of bacteria was suppressed by combined chlorine and that the rapid growth began after combined chlorine had been consumed completely. It was also found that the initial dose of the chlorine could delay their growth, but could not control the maximum count of bacteria. Decay process of free chlorine was described by the simple first-order reaction. To simulate disappearance of combined chlorine, two steps model of first-order reaction was required. The values of rate constants for the first-order reactions depended on the initial chlorine concentration. The simple model for simulating bacteria growth was developed with aid of the activated sludge model No.2 and data from experiments without chlorine dose. It was found that the simple model was also applicable to the experimental results with chlorine dose.