107至110年環境水體(南區)河川海域地下水質監測計畫
| 中文摘要 | 本計畫主要針對南區七縣市各類水體水質監測，掌握各水體水質時間變化趨勢，並進行各水體污染評估分析，以提供環保單位污染防治決策之參考。 河川水質計有29條河川主支流，97個監測站，於每月監測一次，107至109年監測結果顯示，以曾文溪流域及屏東縣河川水質狀況最佳，未(稍)受污染比例達50%，而二仁溪及阿公店溪流域屬嚴重污染等級占較高比例(約20%～35%)。各年度1月至4月普遍無明顯降雨屬枯水期，河水乾涸，河川污染物濃度偏高，造成嚴重污染比例偏高，6月至9月則因降雨豐沛，懸浮固體偏高，以致未(稍)受污染比例偏低，中度污染比例超過50%。整體而言，南部地區河川水水質屬中度污染比例最高，約占45%～50%，未(稍)受污染次之，約占30%～35%，水質狀況與歷年差異不大。 海域水質計有8個沿海區域，42個監測站，於每季監測一次，各季沿岸測站受河口感潮影響，無機鹽類濃度較高，除高屏溪東港溪口沿海之pH、溶氧量、氨氮，以及大鵬灣沿海、核三廠出水口右側之pH等測值外，其餘各季各測站測值均符合其所屬類別之海域海洋環境品質標準。僅第三季、第四季監測期間因降雨量增加，鹽度及部分重金屬測值與歷年略有差異。 海灘水質計有6個海灘，18個監測站，於6月至8月監測，除降雨沖刷影響，水質較差外，其餘各梯次均為優良級。 地下水水質計有7縣市，201個監測井，超過監測標準之比率約占65%，其中超過地下水第二類監測標準之項目與歷年結果相近，以氨氮、鐵及錳為主。各監測井之水質，以Stiff水質形狀圖方式評估，屬HCO3－+CO32－及Ca2＋凸出型占最高比例約為60%～70%，Piper圖解則屬I區及II區占最高比例約為50%～75%，各年度評析結果大致呈現一致趨勢。 | ||
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| 中文關鍵字 | 方法偵測極限、水質監測、水質標準 | ||
基本資訊
| 專案計畫編號 | EPA-107-L101-02-A110-3 | 經費年度 | 107 | 計畫經費 | 78000 千元 |
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| 專案開始日期 | 2018/04/01 | 專案結束日期 | 2021/04/30 | 專案主持人 | 楊靜子 |
| 主辦單位 | 監資處 | 承辦人 | 程凱麟 | 執行單位 | 中環科技事業股份有限公司 |
成果下載
| 類型 | 檔名 | 檔案大小 | 說明 |
|---|---|---|---|
| 期末報告 | 107至110年環境水體(南區)河川海域地下水質監測計畫_期末報告.pdf | 40MB | 107至110年環境水體(南區)河川海域地下水質監測計畫_期末報告 |
The Environment Monitoring of the Water Quality in the Southern Area of Taiwan from 2018 to 2021
| 英文摘要 | The main goal of this project is to monitor the water quality of seven cities and counties in the southern area of Taiwan, and to analyze the degree of pollution in various bodies of water so that trends in water quality can be observed. The result of this investigation can provide grounds for policy making to environmental protection authorities. For river quality, 97 sampling sites covering 29 rivers (including main streams and tributaries) were monitored monthly. The results monitored from 2018 to 2020 showed that the water quality in the area of Zeng-Wen rive and rivers at Ping-Dong county, Tai-Dong county were the best, the area of Er-Ren river and A-Gong-Dian river were found in relatively high extent of pollution. Since there was a major water shortage this year, specifically, a lack of rainfall from January to May, parts of some rivers were nearly dried up, so test results for most pollutants were high, and thus the percentage of serious pollution would tend to look high. Due to a lot of rainfall from June to September, the suspended solids in the rivers tend to be high thus the percentage of unpolluted rivers is low and over 50% of the results indicated the rivers were intermediately polluted. As a whole, the highest percentage of the water quality in the southern Area of Taiwan is about 45% to 50%, it belongs to intermediately polluted rivers. The next is about 30% to 35%, it belongs to unpolluted rivers, and overall water quality is nondifference between the recent years. For ocean monitoring, 42 sampling sites covering eight coastal areas were monitored quarterly. Since the estuary areas were affected by the river during high tide, the concentrations of the inorganic salts were high. The results monitored in the year of 2018 showed that most monitoring data could meet quality criteria of each category, except the results of dissolved oxygen, ammonia nitrogen and pH monitored at estuary areas of Kao-Pin river, Dong-Gang river, Da-Peng Bay and the ampling site on the right side of The 3rd Nuclear Power Plant. Because of typhoon coming in 3rd and 4th quarters, there are some index including salinity and some metals different with the past results. Eighteen sampling sites covering six beaches were monitored from June to August. The results monitored in the year of 2018 showed that most monitoring data could show excellent level. The monitoring of each beach showed that water qualities were worse might be affected by rainfall. Ammonia nitrogen, iron, and manganese were the major analytes with results that reached the regulatory monitoring criteria in 201 ground water sampling sites for the seven cities and counties being monitored quarterly. The failing rates are about 65% for different cities and counties. To analyze graphically each monitoring item by Stiff-plotting and Piper-plotting showed the same trend from 2018 to 2020. To analyze graphically each monitoring item by Stiff-plotting and Piper-plotting showed a trend as same as last two years, there is no significant difference compared to the past. The highest percentage of Stiff-plotting is about 60% to 70%, it belongs to HCO3－+CO32─- Ca2＋ type.The highest percentage of Piper-plotting is about 50% to 75%, it belongs to area of I and II. | ||
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| 英文關鍵字 | Water Quality Monitoring, Water Quality Standards, Method Detection Limit | ||