2级竹炭曝气生物滤池处理生活污水试验研究

EXPERIMENTAL STUDY ON THE CHARACTERISTICS OF TWO-STAGE BAMBOO CHARCOAL MEDIA BIOLOGICAL AERATED FILTER IN THE TREATMENT OF DOMESTIC SEWAGE

研究了以竹炭为填料的2级上向流曝气生物滤池工艺处理生活污水的性能及污染物沿滤池高度的降解规律,确定了该工艺以竹炭为填料的可行性和运行参数。结果表明,当一级、二级气水体积比分别为4:1、1:1,水力负荷为0.5 m3.m-2.h-1,温度为25.8～33.4℃,COD、浊度、氨氮、TN去除率分别为88.24%、92.80%、81.69%、40.30%。出水COD<50 mg.L-1,浊度均<10 NTU,氨氮的质量浓度<15 mg.L-1,满足中水回用标准。

Two-Stage bamboo charcoal media biological aerated filter could be used in the treatment of domestic wastewater by studying the characteristics of it.When the first stage air/water ratio was 4：1,the second stage air/water ratio was 1：1,the hydraulic loading was 0.5 m3·m-2·h-1,and the water temperature was 25.8 to 33.4 ℃,the treatment efficiency of the system was high,Removal efficiencies of COD,turbidity,NH3-N,TN,TP reached 88.24%,92.80%,81.69%,40.30%,respectively.The effluent of COD less than 50 mg·L-1,the turbidity less than 10 NTU,ρ（NH3-N）15 mg·L-1,the treated effluent met the water reusing standard.