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〈南部〉鳳山溪又黑又臭 凶手是天熱 – 我是在地人

〈南部〉鳳山溪又黑又臭 凶手是天熱

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不是工廠偷排廢水 是水中溶氧降低

〔記者陳文嬋/高雄報導〕鳳山溪近來隨著天熱,致水中溶氧降低,且非灌期水量少,污染負荷未減少,造成又黑又臭,環保局連日稽查並採樣,初步排除工廠偷排導致;市府水利局計畫於鳳山圳滯洪池,推動水質淨化場工程,協助改善鳳山溪水質,平常也能挹注水源,環保局則加強取締。

近來因天熱氣溫升高,鳳山溪水中溶氧降低,又有工業廢水及生活污水,加上處於非灌期水量少,污染負荷卻未減少,導致水中耗氧需求增加,硫化氫的臭味揮發出來,民眾聞到異味感覺水變臭了。

環保局近來頻接獲民眾陳情,多次稽查並採樣鳳山溪,並未查獲工廠偷排廢水,多次水質採樣結果,溶氧量均偏低、重金屬也很低,初步排除工廠偷排所致,但仍加強上游列管事業稽查;水中魚類也容易因溫度升高,造成溶氧過低而死亡。

至於民眾反映鳳山溪變黑,環保局表示,水中的懸浮顆粒被微生物包覆後,會形成黑色顆粒,這些黑色顆粒在水中,會使水色看起來是黑色的,但若經過靜置沉澱後,上面的水是比較澄清的,只有底部會呈現黑色。

水利局表示,針對鳳山溪沿岸進行污水截流工程,目前博愛橋以下已全面完成截流,計畫於鳳山圳滯洪池推動水質淨化場工程,設置人工濕地礫間淨化改善水質,目前正爭取中央經費補助。

  • 鳳山溪近來因天熱又黑又臭。(記者陳文嬋攝)

    鳳山溪近來因天熱又黑又臭。(記者陳文嬋攝)

報導來源:自由時報【原文網址

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