碩士 / 國立臺北科技大學 / 環境工程與管理研究所 / 98 / Water soureces conservation and recycling has become more and more important. However, sewer system is not well construct in Taiwan, wastewater directly discharge lead to nutrient concentration upsurge and derivative algae blooms, and affect the follow-up water clean and supply systems. In industrial, using chemical substances cause water tank nutrients accumulated, promoting algae growth and unfavorable for follow-up wastewater reusing process. Therefore, this study focuses on algae removal and prevention techniques, and to experiment, hoping to find the most appropriate and effective methods, provide relevant industry to have more choices and alternatives to face algae problem.
This study used ultrasound, ultraviolet and shielding techniques and their combinations to experiments. According to experimental results, raw water quality, pH, temperature, turbidity, dissolved oxygen, algae concentration, total phosphorus and nitrate nitrogen were positively correlated with the number of algae cells, while ammonia nitrogen, orthophosphate, total Kjeldahl nitrogen and the ratio of nitrogen and phosphorus nutrient were negatively correlated with the number of algae cells. In algae removal, ultraviolet and its combinations were have the most effective, during the day more than 98 % removal rate, and in four days can remove algae cells completely, and there was no algae regrowth during the experiments period. In treatment effectiveness, ultrasound combained with shelter is the most effective treatment technology, moreover, 0.17 % algae was removed per each watt, equivalent removing 1,899 cells/L algae cells.
| Identifer | oai:union.ndltd.org:TW/098TIT05087019 |
| Date | January 2010 |
| Creators | Chung-Yi Kuo, 郭仲毅 |
| Contributors | 張添晉 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 154 |
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