碩士 / 嘉南藥理大學 / 環境工程與科學系 / 102 / This study was to investigate the improvement of water quality and the way of sterilization of pond water in southern Taiwan. In order to reduce the aquatic animal health and improve the water quality, this study used different concentrations of chlorine dioxide to disinfect the pond water and then detect the total number of bacterial colonies, including Ecoli colonies gas producing bacterial Aeromonas spp. In addition, the water quality was also monitored, including: pH conductivity total solubility product, redox state, BOD, chlorophyll a, ammonia.
Results showed that chlorine dioxide can oxidize nitrite leading to an increase of nitrate concentration. By the statistical analysis, the above effect is significant (p < 0.05). Using 3.0mg/L chlorine dioxide can kill 100% of Ecoli and remove Aeromonas spp. within 10 minutes. There is no any bacterial within 2 hours because the residual amount of chlorine dioxide which can inhibit continuously the growth of microbial. In addition, there is a negative relationship between the concentrations of chlorine dioxide and chlorophyll a (p < 0.05). This means that chlorine dioxide can reduce the chlorophyll a; there was also a negative relationship between pond water quality and BOD (p < 0.05). It indicated that chlorine dioxide can reduce the organic component in the pond water. Consequently, adding chlorine dioxide into fishery pound could reduce the bacterial and maintain the health of fish. It allowed the water to be reused longer and also reduced the pollution to the environment.
| Identifer | oai:union.ndltd.org:TW/103CNUP0515001 |
| Date | January 2014 |
| Creators | Cheng-Wei Jhao, 趙呈維 |
| Contributors | Ching-Shan Hsu, 許菁珊 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 108 |
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