| 英文摘要 |
The implementation period of the final report of this project is from January to December 2008. The results of the implementation of the project are summarized as follows:
1. The results of water quality analysis data show:
(1) The current water quality of Taichung rivers (17 stations) has been generally stable over the years, and is affected by geology (manganese is the main element in the earth's crust, and most of the water is insoluble oxidation under the condition of neutral and alkaline pH. Existing in natural water, the content of natural water is inherently high), which makes heavy metal manganese (Mn) an item that frequently exceeds the standard. Some targeted measurement stations, such as Dadu River and Daan River, are located in the estuary section of the river and are affected by the rising and ebb tide seawater to high conductivity. The total phosphorus and ammonia nitrogen values of the downstream of the Daan River Zhongke Phase III discharge outlet In some cases, a total of 1092 tests were carried out from January to December. Among them, 879 tests were in line with Category C standards. The highest compliance rate was 85.7% in May. The compliance rate in other months was between 65.9%~85.7%, the overall coincidence rate was 80.5%.
(2) The urban area drainage monitoring station (15 stations) except for Luchuan and Nanbian Creek, the others all showed the degree of water pollution of "moderate pollution". Among them, Luchuan RPI=2.61 this year belongs to "light pollution", south The stream RPI = 2.27 is "slightly polluted".
(3) The Taichung Port District's regional drainage of Haixian rivers and regional drainage (17 stations) showed "not (slightly) polluted" ~ "moderately polluted", Wenliao Creek RPI=1.99, Dingdian second largest row RPI =1.59, Beishanxi RPI=1.70, Dingdianzhen RPI=1.32, the water quality pollution degree is "not (slightly) polluted".
(4) The test results of sea water quality (5 stations) showed that the coastal water quality in Taichung area is very good. At present, 80 of the 80 tests have met the water quality standards of Class A sea areas, with a compliance rate of 100%.
(5) Beach water quality (2 stations) 1. The beach water quality in May was rated as "unfavorable"; the beach water quality in February, March, September, November and December was rated as "normal", 4, 6, 7, 8, and In October, it reached the "good" grade. Among them, the E. coli group, the enterococcus group, and the turbidity were occasionally high due to the impact of ocean currents and the influx of the Daan River. As a result, the beach water quality failed to maintain the "good" grade throughout the year.
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