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不同pH值条件下Fe3+、Cu2+和Zn2+对厨余垃圾两相厌氧消化水解酸化过程的影响

Keywords: 厌氧,Fe3+,Cu2+,Zn2+,pH值,VFA

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Abstract:

通过间歇实验研究了在pH=7和不调节pH两种情况下添加不同浓度的Fe3+、Cu2+和Zn2+对厌氧消化水解酸化阶段有机酸组分和含量的影响。结果表明,pH=7时,添加50mg/LFe3+和30mg/LCu2+,有利于厨余垃圾水解酸化过程的进行,反应生成的VFA(挥发性脂肪酸)含量增加。不调节pH时,添加100mg/L以下的Fe3+和Cu2+对VFA含量也有所促进,但乳酸含量也增加。在2种pH条件下添加Zn2+对反应的促进或抑制作用均不明显。

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