羟基氧化铁系列吸附剂去除二级出水中污染物的研究

Study on Removal of Pollutants from Secondary Effluent by Adsorbents of FeOOH Series

用物化方式深度处理二级出水,实现污染物削减是污水再生回用的必要步骤。研究比选粉末活性炭(PAC)、羟基氧化铁(FeOOH)、活性炭负载羟基氧化铁(PAC负载FeOOH)、沸石、沸石负载FeOOH这5种吸附剂吸附去除二级出水中污染物效果,发现200 mg/L的FeOOH、PAC负载FeOOH可分别将TP浓度由0.95 mg/L降至0.31 mg/L、0.50 mg/L,200 mg/L的PAC负载FeOOH对UV254、DOC去除率分别为65%、35%。傅里叶红外光谱证明吸附发生。PAC负载FeOOH在污水深度处理中可实现同时去除二级出水中有机污染物和TP,出水符合景观回用水标准。

It is a necessary step for wastewater regeneration and reuse to deeply treat secondary effluent by means of physical and chemical methods to reduce pollutants.In this study,five adsorbents,PAC,FeOOH,PAC loaded FeOOH,zeolite and zeolite loaded FeOOH were selected to explore the removal effect of pollutants in secondary effluent.It was found that FeOOH and PAC loaded FeOOH of 200 mg/L could reduce TP concentration from 0.95 mg/L to 0.31 and 0.50 mg/L respectively.The removal rates of UV254 and DOC by PAC loaded FeOOH of 200 mg/L were 65%and 35%,respectively.It can be proved that adsorption occurred by FTIR.PAC loaded FeOOH can simultaneously remove organic pollutants and TP in secondary effluent during wastewater advanced treatment,and the effluent meets the landscape reuse water standard.