108-11-08

109

1,475 千元

2020/01/01

2021/12/31

趙嘉雍

宜蘭縣政府環境保護局

吳珮貞

康廷工程顧問企業有限公司

水質保護

前瞻計畫、水質監測

Forward-looking plan, water quality monitoring

林信結

02-77304000#

sing1453@gmail.com

一、 安農溪第三期河道環境改善工程 本處三段(上游、施工段、下游)109年pH值介於7.2~8.5之間屬正常，水溫為17.1~30.6℃之間屬於正常，導電度介於498~612 μmho/cm之間，溶氧量為6.3~11.0 mg/L之間，屬較高溶氧，此處流速較湍急所造成，生化需氧量三段皆低於1.0mg/L，化學需氧量測值介於ND~18.8 mg/L，惟大腸桿菌群均高於標準值10 CFU/100mL，三段測值介於460~110,000 CFU/100mL，其中下游因受人口密集生活污水排入所影響，以致大腸桿菌數值偏高，氨氮部分三段測值介於ND~0.32mg/L之間，皆低於標準值0.5mg/L，懸浮固體介於7.1~1,320 mg/L之間，3月、5月、9月及10月監測數值偏高，研判可能為監測前突增降雨量致河床擾動影響懸浮固體濃度增加，代入RPI河川污染程度指標計算得知上游為2.2輕度污染，施工段為1.9屬未(稍)受污染，下游為1.8屬未(稍)受污染。 二、 宜蘭河水岸慢行道及水域活動環境改善計畫 本處三段(上游、施工段、下游)109年pH值介於6.9~7.9之間屬正常，水溫為19.3~29.9℃之間屬於正常，導電度介於124~367 μmho/cm之間，溶氧量為2.3~8.1mg/L之間，生化需氧量三段大部分皆低於1.0mg/L，僅5月份慶和橋(2.7 mg/L)及黎霧橋(2.2mg/L)，8月份慶和橋(4.0 mg/L)，化學需氧量測值介於ND~21.7mg/L，大腸桿菌群均高於標準值10 CFU/100mL，三段測值介於6,000~530,000 CFU/100mL，其中5月份檢測當日主要因強降雨加速生活污水經由閘門排到河川，故大腸桿菌群數據升高，氨氮部分三段測值介於0.02~1.31mg/L之間，懸浮固體介於4.5~363 mg/L之間，黎霧橋(363mg/L)。代入RPI河川污染程度指標計算得知，上游為1.4屬未(稍)受污染，施工段為2.1屬輕度污染，下游為1.9屬未(稍)受污染 三、 十六份排水環境改善工程計畫 本處三段(上游、施工段、下游)109年pH值介於7.0~8.2之間屬正常，水溫為19.9~33.3℃之間屬於正常，導電度介於34~392 μmho/cm之間，溶氧量為1.4~9.7mg/L之間，生化需氧量除無名橋7月份測值2.0 mg/L，十六份四路橋4月份測值3.4 mg/L、5月份測值3.7 mg、6月份測值2.6 mg/L、8月份測值4.1 mg/L及新武淵橋測4月測值1.5mg/L、4月測值4.3mg/L、8月測值3.8mg/L外，其餘皆低於1.0mg/L，化學需氧量測值介於ND~45.5mg/L，大腸桿菌群均高於標準值10 CFU/100mL，三段測值介於13,000~1,300,000 CFU/100mL，懸浮固體介於3.2~29.4mg/L之間，代入RPI河川污染程度指標計算得知，上游為1.5屬未(稍)受污染，施工段為2.9屬輕度污染，下游為1.9屬未(稍)受污染。 四、 宜蘭縣蘇澳鎮南方澳地區週遭第二期水環境改善計畫 本處三段(上游、施工段、下游)109年pH值介於6.7~10.6之間，水溫為17.1~29.6℃之間屬於正常，導電度介於217~1,620 μmho/cm之間，溶氧量介於0.2~6.7mg/L之間，生化需氧量介於<1.0~401 mg/L，化學需氧量測值介於19.5~652mg/L，大腸桿菌群除7月<10 CFU/100Ml，其餘月份均高於標準值10 CFU/100mL，三段測值介於170,000~70,000,000 CFU/100mL，懸浮固體介於5.1~302mg/L之間，代入RPI河川污染程度指標計算得知，南方澳地區週遭第二期水環境改善工程三段水質之污染指數積分值，上游為7.9屬嚴重污染，施工段為7.4屬嚴重污染，下游為8.3屬嚴重污染。

前瞻計畫、水質監測

109年度宜蘭縣水污染源管制及水體環境改善計畫(前瞻水質監測).pdf

2MB

109年宜蘭縣全國水 環境水質監測計畫

2022/1/30 上午 12:00:00

1. Annongxi third-phase river environment improvement project The three sections (upstream, construction section, and downstream) of this department have a normal pH value of 7.2~8.5 in 2020, a water temperature of 17.1~30.6℃, and a conductivity of 498~612 μmho/cm. , The dissolved oxygen is between 6.3~11.0 mg/L, which is a higher dissolved oxygen. The flow rate here is more turbulent. The three stages of biochemical oxygen demand are all lower than 1.0mg/L, and the measured value of chemical oxygen demand is between ND~18.8 mg/L, but the Escherichia coli group is higher than the standard value of 10 CFU/100mL, and the three-stage measured value is between 460~110,000 CFU/100mL. The downstream is affected by the discharge of densely populated domestic sewage, resulting in the value of Escherichia coli On the high side, the three-stage measured value of ammonia nitrogen is between ND~0.32mg/L, which is lower than the standard value of 0.5mg/L, and the suspended solids are between 7.1~1,320 mg/L, March, May, September The monitoring values ​​in October and October were relatively high. The study concluded that the sudden increase in rainfall before monitoring caused the disturbance of the riverbed to increase the concentration of suspended solids. Substituted into the RPI river pollution degree index calculation, it was found that the upstream was 2.2 slightly polluted, and the construction section was 1.9. Slightly) polluted, and 1.8 in the downstream is not (slightly) polluted. 2. Environmental improvement plan for slow-moving roads and water activities of Yilan River The three sections (upstream, construction section, and downstream) of this section (upstream, construction section, and downstream) are normal in 2020 when the pH value is between 6.9 and 7.9, the water temperature is between 19.3 and 29.9℃, and the conductivity is between 124 and 367 μmho/cm. , The dissolved oxygen is between 2.3~8.1mg/L, most of the three stages of biochemical oxygen demand are below 1.0mg/L, only in May at Qinghe Bridge (2.7 mg/L) and Liwu Bridge (2.2mg/ L), at Qinghe Bridge in August (4.0 mg/L), the measured value of chemical oxygen demand is between ND~21.7mg/L, the colony of Escherichia coli are all higher than the standard value of 10 CFU/100mL, and the measured value of three stages is between 6,000 ~530,000 CFU/100mL, of which the test day in May was mainly due to heavy rainfall accelerating the discharge of domestic sewage to the river through the gate, so the E. coli group data increased. The measured value of the three stages of ammonia nitrogen was between 0.02~1.31mg/L, suspended The solid is between 4.5~363 mg/L, Li Wuqiao (363mg/L). Substituted into the RPI river pollution degree index calculation, it is found that the upstream is 1.4 which is not (slightly) polluted, the construction section is 2.1 which is lightly polluted, and the downstream is 1.9 which is not (slightly) polluted. 3. Sixteen Drainage Environment Improvement Projects The three sections (upstream, construction section, and downstream) of the department are normal in 2020 with pH values ​​between 7.0 and 8.2, water temperature between 19.9 and 33.3°C, and conductivity between 34 and 392 μmho/cm. , Dissolved oxygen is between 1.4~9.7mg/L, the biochemical oxygen demand is 2.0 mg/L measured by Wumingqiao in July, 16 copies of Siluqiao measured 3.4 mg/L in April and 3.7 mg measured in May , 2.6 mg/L measured in June, 4.1 mg/L measured in August, 1.5 mg/L measured in April by Xinwuyuan Bridge, 4.3 mg/L measured in April, 3.8 mg/L measured in August In addition, the rest are below 1.0mg/L, the chemical oxygen demand measurement value is between ND~45.5mg/L, the coliform group is higher than the standard value of 10 CFU/100mL, and the three-stage measurement value is between 13,000~1,300,000 CFU/ 100mL, suspended solids between 3.2~29.4mg/L, substituting into the RPI river pollution degree index calculation, it is found that the upstream is 1.5 (slightly) polluted, the construction section is 2.9 is slightly polluted, and the downstream is 1.9 is not polluted. (Slightly) Contaminated. 4. The second phase of water environment improvement project around Nanfangao area in Suao Town, Yilan County The pH of the three sections (upstream, construction section, and downstream) of this section in 2020 was between 6.7 and 10.6, the water temperature was between 17.1 and 29.6 ℃, which was normal, and the conductivity was between 217 and 1,620 μmho/cm. The oxygen content is between 0.2~6.7mg/L, the biochemical oxygen demand is between <1.0~401 mg/L, the chemical oxygen demand measured value is between 19.5~652mg/L, the E. coli group is less than 10 CFU in July /100Ml, the remaining months are all higher than the standard value of 10 CFU/100mL, the three-stage measured value is between 170,000~70,000,000 CFU/100mL, and the suspended solids are between 5.1~302mg/L, which is substituted into the RPI river pollution degree index calculation. The pollution index integral value of the water quality of the third stage of the second phase of the water environment improvement project in the southern Australia area is 7.9 for serious pollution in the upstream, 7.4 in the construction section, and 8.3 in the downstream.

Forward-looking plan, water quality monitoring