瓷粒曝气生物滤池处理生活污水的试验研究  

Experimental Study on Domestic Sewage Treatment by Biological Aerated Filter with Porcelain Media

作　　者：金吴云[1,2] 刘灿灿[1,2] 沈耀良[1,2] 袁煦[1,2] 

机构地区：[1]苏州科技学院江苏省环境科学与工程重点实验室,江苏苏州215011 [2]苏州科技学院环境科学与工程学院,江苏苏州215011

出　　处：《中国给水排水》2008年第17期20-23,27,共5页China Water & Wastewater

基　　金：江苏省"333工程"学术带头人资助课题

摘　　要：采用以瓷粒为填料的上流式曝气生物滤池（BAF）处理生活污水，研究了水力停留时间、气水比、进水有机物浓度对处理效果的影响。结果表明，在水温为11．5～32．9℃、气水比为3：1、COD为90．6～419．0mg／L、NH4^＋-N为7．85～47．51mg／L、TN为16．76～58．40mg／L、SS为80～270mg／L的条件下，对COD的去除率与水力停留时间并非呈简单的线性关系，最佳的水力停留时间为10h。随着水力停留时间的缩短，对氨氮的去除率下降，对SS的去除率也基本呈下降的趋势，但是差别不大。当气水比为（1：1）、（3：1）、（5：1）时，增加气水比有利于提高对COD和氨氮的去除率，但对TN的去除效果会变差。当进水有机物浓度为100～400mg／L时，随着进水有机物浓度的增加，对COD的去除率升高，对氨氮的去除率则基本保持不变。The up-flow biological aerated filter with porcelain media was adopted to treat domestic sewage. The influence of hydraulic retention time, air/water ratio and influent organic concentration on the performance of the biological aerated filter was studied. The results show that under the conditions of temperature 11.5 to 32.9 ℃, air/water ratio 3 ： 1, influent COD 90.6 to 419.0 mg/L, NH4^＋ - N 7.85 to 47.51 mg/L, TN 16.76 to 58.40 mg/L and SS 80 to 270 mg/L, the relation between COD removal rate and hydraulic retention time is not linear, and the optimal HRT is 10 h. With the decrease of HRT, the removal rate of NH4^＋ - N is reduced, and the removal rate of SS is slightly reduced. When the air/ water ratio is 1 ： 1,3 ： 1 and 5 ： 1, the increasing of air/water ratio causes higher removal rates of COD and NH4^＋ - N, but a lower removal rate of TN. When the influent organic concentration is 100 to 400 mg/L, with the increasing of the influent organic concentration, the removal rate of COD increases, but the removal rate of NH4^＋ - N is changed hardly.

关 键 词：上流式曝气生物滤池 生活污水 水力停留时间 气水比 COD 

分 类 号：X703[环境科学与工程—环境工程]