碩士 / 嘉南藥理科技大學 / 環境工程與科學系暨研究所 / 97 / To investigate the water purification of filter systems in the aquarium, different material; ceramic rings with and without ferric oxide coating, granular activated carbon and artificial cotton fiber, were used to form 4 sets of filter systems with different combinations. There were 100 Zebra fishes for each aquarium. The degradation of nitrogen contained pollutant was mainly the topic to be discussed. From the results obtained, the electrical conductivities were initially 619μS/cm, 622μS/cm, 643μS/cm, 639μS/cm respectively and reached 1900μS/cm, 1846μS/cm, 1885μS/cm, 1942μS/cm after an operation period of 214 days. It showed that all of filter systems could not deal with the pollutant from the Zebra fishes or excessive feeding stuffs. The averages of biochemical oxygen demand (BOD) were 1.44mg/l, 1.03 mg/l, 1.63 mg/l and 1.18 mg/l respectively which would not be the main pollutant endanger the zebra fish or aquatic animal.
In the initial stage of 50 days, the removal efficiencies of NH4+- N for every system were quite good and the concentration maintained in a rather low level. And then, the concentration of system A and B whose filter system were mainly composed of ceramic ring with and without ferric oxide became to increase. It indicated that the ferric oxide coating did not offer the capacity to absorb the pollutant. For system C and D which were mainly composed of activated carbon and artificial cotton fiber, the concentrations of NH4+- N were larger than 1 mg/l after the operation of 77 days. The removal of different filter systems could be estimated from the unit NH4+- N release of 2.10mg/d for each zebra fish. The results of NH4+- N removal showed that the system C would be the best combination of water purification system.
| Identifer | oai:union.ndltd.org:TW/097CNUP5515046 |
| Date | January 2009 |
| Creators | Chien-Chih Yang, 楊荐智 |
| Contributors | Jih-Ming Chyan, 錢紀銘 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 77 |
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