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109年度臺中市河川、海域水體水質監測計畫

 專案計畫編號
 經費年度 109年度
 計畫經費 4,000千元
 專案開始日期 2020/01/10
 專案結束日期 2020/12/31
 專案主持人 古蕙嘉
 主辦單位 臺中市政府環境保護局
 承辦人 陳文裕
 執行單位 亞太環境科技股份有限公司
 專案分類 水質保護
 中文關鍵字 河川水質、海域水質、海灘水質
 英文關鍵字 River water quality, sea water quality, beach water quality
 協同主持人
 共同主持人
 計畫聯絡人 楊景旭
 計畫聯絡電話 --
 計畫聯絡信箱 --
 專案審查者
 專案審查時間
 專案核對者 洪偉昭
 專案核對時間 2021/01/18

109年度臺中市河川、海域水體水質監測計畫

 中文摘要 (一)目前臺中市河川水質(17站次)狀況歷年來大致穩定,受到地質影響(錳為地殼中主要元素,在水質之pH為中及鹼性之條件下,大多以非溶解性之氧化態存在,自然水體中含量本高)使重金屬錳(Mn)為經常性超標之項目。部分針對性測站如大肚溪與大安溪部分,因位於河川出海口河段而受漲退潮之海水影響至導電度偏高,而大安溪中科三期放流口下游之總磷與氨氮值有偏高的情形,於1月至12月間共計執行1,008項次之檢測,其中有789項次符合丙類水體標準,其符合率最高者為9、10月份的83.3%,其他月份符合率則介於60.7 %~82.1%,總符合率為78.3 %,今年臺中市整體河川水質狀況與去(108)年比較,部分測站至目前為止有惡化之情況,推測受今年度貧雨因素,為近10年來降雨量最低的一年,導致河川水質整體有惡化之情況。 (二)市區區域排水測站(15站次)除了旱溪排水(未稍受污染)、綠川(輕度污染)、南邊溪(未稍受污染))外,其餘皆呈現「中度污染」之水質污染程度,與去(108)年比較旱溪排水RPI=1.92提升至「未稍受污染」、南邊溪RPI=1.98提升至「未稍受污染」,其餘維持與去(108)年等級。 (三)海線河川及區域排水(18站次)之臺中港區區域排水呈現「未稍受污染」~「中度污染」,頂店第二大排RPI=1.84之區域排水則呈現「未稍受污染」之水質污染程度;溫寮溪RPI=2.20、北汕溪RPI=2.48、頂店圳RPI=2.08之區域排水則呈現「輕度污染」之水質污染程度,而溫寮溪及大甲地區之北汕溪、頂店圳排水則惡化為「輕度污染」程度,其餘維持與去(108)年等級。 (四)海域水質(5站次)檢測結果顯示,臺中地區沿海水質狀況十分良好,目前總共80項次檢測中,共計80項次符合甲類海域地面水體水質標準及保護人體健康環境基準,符合率為100%,維持在與去(108)年皆符合標準狀況。 (五)海灘水質(2站次) 7、9月份則達「優良」之等級3~6、8、10月份海灘水質皆呈現「普通」之等級,其中大腸桿菌群、腸球菌群、濁度偶有受海流及大安溪匯入影響而偏高,導致海灘水質未能全年度維持「優良」等級。
 中文關鍵字 河川水質、海域水質、海灘水質

109年度臺中市河川、海域水體水質監測計畫

 類型  檔名  說明
 期末報告  期末報告.pdf(24.4MB)  
最新版公開日期: 2021/1/19 上午 12:00:00

2020 Taichung River and Sea Water Quality Monitoring Project

  摘要 (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 If there is a high situation, a total of 1,008 tests were performed between January and December, of which 789 were in compliance with the standards for Category C water bodies. The highest compliance rate was 83.3% in September and October, and the compliance rate in other months It is between 60.7% and 82.1%, and the total coincidence rate is 78.3%. Compared with the previous year (108), the overall river water quality in Taichung City this year has deteriorated in some stations so far. It is estimated that due to the poor rain this year, The lowest rainfall in the past 10 years has caused the overall river water quality to deteriorate. (2) Urban area drainage monitoring stations (15 stations), except for dry stream drainage (not slightly polluted), Lvchuan (lightly polluted), and Nanbian Creek (not slightly polluted), the others all showed "moderate" Compared with last year (108), the water quality pollution degree of “Pollution” has been increased to “not slightly polluted” at the drainage RPI=1.92 of Hanxi, and “not slightly polluted” at the RPI=1.98 of Nanbian Creek, and the rest remain unchanged (108) Year grade. (3) The regional drainage of the Taichung Port area of ​​the Hai-line river and regional drainage (18 stations) showed "not slightly polluted" to "moderately polluted", and the regional drainage of the second row of Dingdian with RPI = 1.84 showed "unsatisfactory" "Slightly polluted" water pollution degree; Wenliao River RPI = 2.20, Beishan River RPI = 2.48, Dingdian Zhen RPI = 2.08, the water quality pollution degree of "light pollution", while Wenliao River and Da The drainage of Beishanxi and Dingdianzhen in Area A deteriorated to a level of "light pollution", and the rest remained at the level of (108). (4) The test results of sea water quality (5 stations) show that the coastal water quality in Taichung area is in very good condition. At present, 80 of the 80 tests have met the water quality standards of Class A surface water bodies and the environmental standards for protecting human health. The rate is 100%, and it remains in line with the standards in the last (108) years. (5) Beach water quality (2 stations) July and September reached the "excellent" level. From 3 to June, August and October, the beach water quality was "normal", including E. coli, enterococci and turbidity. Occasionally, due to the impact of ocean currents and the influx of the Daan River, the water quality of the beach cannot be maintained at a "good" level throughout the year.
  英文關鍵字 River water quality, sea water quality, beach water quality

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