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  • 學位論文

重金屬三價鉻及六價鉻對活性污泥Bardenpho程序微生物功能族群抑制效應之研究

The inhibitory effect of trivalent and hexavalent chromium on heterotrophic species in activated sludge of Bardenpho process

指導教授 : 白子易
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摘要


近年來,隨著工業發展廢水大量的排放,在工業廢水中常含有 Pb、Cr、Zn、Cu、Fe、Hg、Cd 等重金屬,由於活性污泥受到重金屬抑制,容易使處理效果不張,進而造成水體污染,因此瞭解廢水處理程序中重金屬之轉化與傳輸行為,可加強廢水處理效益。本研究利用朝陽科技大學 Bardenpho 模廠培養之污泥模擬廢水處理廠對污泥中異營菌 (heterotrophic organisms, XH) biomass 的影響,求得廢水處理廠中重金屬廢水對微生物抑制率影響及微生物受抑制相關參數,相關數據可作為廢水處理廠中含重金屬廢水之動力參數基本資料庫及模式模擬。結果顯示,在異營菌動力參數方面於加入三價鉻重金屬廢水濃度分別為 5、10、15、20 mg L-1 XH 之 μH 抑制率分別為 27.87%、34.83%、42.33%、42.88% ;於加入六價鉻重金屬廢水濃度分別為 5、10、15、20 mg L-1 XH 之 μH 抑制率分別為 39.34%、42.52%、47.25%、52.02%, μH 隨重金屬廢水濃度增加而降低。三價鉻重金屬最大生長速率 μH 公式:μH =3.843e-0.0268x;六價鉻重金屬最大生長速率 μH 公式:μH =3.62e-0.0322x。三價鉻重金屬濃度對 XH 之 bH 強化率分別為 23.08%、33.33%、61.54%、82.05%;六價鉻重金屬濃度對 XH 之 bH 強化率分別為 33.33%、56.41%、76.92%、110.26%。

關鍵字

三價鉻 異營菌 攝氧率 六價鉻

並列摘要


A new modeling concept is used for evaluate the effect of trivalent chromium and hexavalent chromium on the heterotrophic organisms (XH) biomass. The oxygen uptake rate (OUR) was employed to measure the constants. The result has shown that, based on the hetertroph kinetics parameters, the concentration of the heavy metals wastewater with trivalent chromium are 5、10、15、20 mg L-1 of XH, which inhibition rate are 27.87%、34.83%、42.33%、42.88%;The concentration of the heavy metals wastewater with hexavalent chromium are 5、10、15、20 mg L-1 of XH, which inhibition rate are 39.36%、42.52%、47.25%、52.02%,the value of μH is decreased with the increasing concentration of heavy metals wastewater. For the concentration of trivalent chromium heavy metals, the inhibition rate of bH are 23.08%、33.33%、61.54%、82.05%;For the concentration of hexavalent chromium heavy metals, the inhibition rate of bH are33.33%、56.41%、76.92%、110.26%.

參考文獻


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