碩士 / 國立海洋大學 / 漁業科學系碩士在職專班 / 91 / There are six fishing harbors in Keelung City, each having unique economical activities in its watershed. The purpose of this study intends to compare difference in water quality among the six harbors and furthermore to identify the effects of different economical activities on water quality of harbors.
Water quality sampling was started from August 2001 to July 2002, at least once a month. Water quality measurements included pH, suspended solids, dissolved oxygen, biochemical oxygen demand (BOD), ammonia nitrogen, and nitrate nitrogen. Additionally, environmental data related to the watershed of each harbors were gathered and analyzed. To distinguish the difference in water quality among harbors, ANOVA analysis was used. Identification of the correlation of water quality with economical activities was performed with estimating the flow rate of wastewater and BOD loading to each harbor.
Results indicated that Pa-Douz harbor differed significantly from other harbors, so did Zheng-Bin harbor but with less significance. No difference occurred among other ports. The water quality of Pa-Douz harbor also differed significantly between the seasons of Spring and Fall. The flow rates and BOD loads to Pa-Douz harbor and Zheng-Bin harbor, respectively, were 20-200 times that to Chang-Tangli harbor. The waste volume and loads from fishing boat were relatively small. Based on principle analysis, the ammonia nitrogen was correlated with population in watershed.
This study implied that the water quality under investigation was primarily affected by domestic sewage, thus, it is suggested sanitary sewer and wastewater treatment plants be constructed to reduce waste loads to harbor.
| Identifer | oai:union.ndltd.org:TW/091NTOU1451007 |
| Date | January 2003 |
| Creators | 林碧霜 |
| Contributors | , 李志源, 李明安 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 59 |
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