| Summary: | 碩士 === 國立臺灣大學 === 環境工程學研究所 === 94 === In order to investigate water resources, experience equations are usually used, especially in the presumption of the flow rate, in planning and designing the sewerage system. Material Flow Analysis (MFA) is one of the useful methods for us to evaluate flowing conditions of fluids and to analyze the mass balance between water and wastewater in a systematic way.
National Taiwan University (NTU) plans to build several basic environmental constructions like the sewerage system. This research takes the sewerage system in NTU as a case with using MFA method and real data to explore the flow conditions of the wastewater in the campus.
The result showed that the consuming rate of water, in section one, goes down and down in recent years. In 2004, there is totally about 1,694,187 m3 water used and about 1,483,371 m3 wastewater emitted. The ratio water used/wastewater emitted is 0.86. The total quantity of the wastewater is 4,052.93 CMD. By classifying the sources of the wastewater in district, we can get the ratio of 38.5 % from the experimental wastewater, 24 % from buildings, 20.7 % from dorms, 6.7 % from leakage, 6.3 % from swimming pool and the gymnasium, and 3.8 % from restaurants.
It may cause money-wasting for the resources if we use 360 Lpcd or 300 Lpcd as the designing wastewater flow rate. Therefore, this research suggests that using MFA method as a tool to evaluate the baseline data for further plans, and build the index to assess the water resource conditions in campus, and then serving as a basis for the managers to plan or manage.
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