SBR/沸石处理Fenton法预处理7-ACA废水研究

摘要

采用SBR（序批式活性污泥法）以及在SBR反应器中投加天然沸石的方式对Fenton法预处理后的7-氨基头孢烯酸(7-ACA)废水进行处理，考察了驯化污泥、未驯化污泥及投加天然沸石后驯化污泥对废水中CODCr值降低和NH3-N的去除效果。结果表明，采用逐渐增加进水中7-ACA原水在混合废水中的比例可实现对污泥的驯化，经39 d驯化后SBR对CODCr值降低率保持在71.8%~76.5%；驯化污泥对Fenton法预处理废水中CODCr值平均降低率为79.9%，NH3-N平均去除率为74.9%，明显好于未驯化污泥；SBR反应器中投加天然沸石后，其对废水中NH3-N的平均去除率为81.9%，可有效提升驯化污泥对废水中NH3-N的去除效果。%Fenton was used to pretreat 7-Aminocephalosporanic acid (7-ACA) wastewater. The SBR and SBR with natural zeolite were used to treat the wastewater after pretreatment. The effects of the biochemical treatment were investigated in domestication sludge, not domestication sludge, and domestication sludge with natural zeolite methods. The results showed that gradually increase the 7-ACA wastewater’s proportion in the mixed wastewater could be a way to make sludge adapted. After 39 days’ domestication, the CODCr removal efficiency kept in 71.8%~76.5%. Domestication sludge was used to treat the wastewater after pretreatment, the CODCr and NH3-N average removal efficiencies were 79.9%and 74.9%, better than not domestication sludge in CODCr and NH3-N removal efficiencies. The NH3-N average removal efficiencies was 81.9%in the way of SBR with natural zeolite. The NH3-N removal efficiencie could be effectively improved by zeolite.