TREATMENT OF ACRYLIC FIBER WASTEWATER USING MICROBUBBLE-OZONE PROCESS AND MICROPORE-OZONE PROCESSChinese Full Text
Zheng Tianlong;Tian Yanli;Sharavsambuu Ariunbileg;Zhang Zhihui;Sun Hesheng;Zhu Zhiwen;Wang Qunhui;School of Civil and Environmental Engineering,University of Science and Technology Beijing;China Oil HBP Science＆Technology Corporation Ltd.;
Abstract: Acrylic fiber wastewater which is one of the most refractory wastewater because of its poor biodegradability,can hardly satisfy the discharge standard only by biochemical treatment.In this study,microbubble-ozone process and microporeozone process for advanced treatment of the wastewater were compared.The gas holdup,ozone transfer efficiency,and average ozone utilization rate of microbubble-ozone process were 11 times,3 times,and 1.5 times that of micropore-ozone process,respectively.Furthermore,microbubble-ozone process also had much more hydroxyl radicals and higher dissolved ozone concentration,and thus the oxidation ability was stronger.Consequently,organic matters with double bond or with benzene ring were more likely to be oxidized to small molecule organic materials such as olefine acid or carboxylic acid.Therefore,microbubble-ozone process was significantly better than micropore-ozone process based on the removal efficiency of COD,UV254,and NH3-N and biodegradability improvement.
- DOI：
10.13205/j.hjgc.201408013
- Series：
- Subject：
- Classification Code：
X703;X783.4
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