活性污泥异化铁还原协同降解腈纶废水特征污染物DMAC

Degradation of acrylon wastewater specific pollutant-DMAC by dissimilated Fe (Ⅲ) reduction in activated sludge

通过试验对比考察了投加不同形式Fe(Ⅲ)在兼氧/厌氧条件下异化铁还原协同降解模拟DMAC废水的效果,结果表明,在兼性厌氧条件下,不同形式Fe(Ⅲ)源体系对DMAC降解效果的大小依次为氧化铁皮>Fe(OH)3>生物海绵铁铁泥;在严格的厌氧条件下,降解效果则无明显差异。同时考察了添加氧化铁皮反应器对DMAC进水负荷的耐受能力,结果显示,该体系表现出明显的DMAC降解效果,出水DMAC浓度随进水DMAC负荷的增加有所提高。

The effectiveness of the degradation of simulated DMAC wastewater by adding Fe（Ⅲ） in different forms, under anoxic/anaerobic conditions,cooperating with dissimilated iron reduction has been investigated through tests and contrasts. The results show that under anoxic conditions ,the order of degradation effectiveness of different forms of Fe（Ⅲ） source systems are iron oxide scale＆gt;Fe（OH）3＆gt;biological sponge iron mud. Under strict anaerobic condi-tion,there is not any obvious difference in the degradation effectiveness. In addition,the effect of adding iron oxide scale reactor on the tolerance of DMAC influentt loading is also investigated. The system shows significant degrada-tion effect,and the concentration of effluent DMAC increases with the increase of influent DMAC loading.