清洗频率对固定床生物滤器水处理性能的影响  

Effect of cleaning frequency on water treatment performance of fixed bed biofilter

作　　者：李叶 杜以帅[1,3] 徐建平 邱天龙 周利[1,3] 孙建明[1,3] LI Ye;DU Yi-shuai;XU Jian-ping;QIU Tian-long;ZHOU Li;SUN Jian-ming(Key Laboratory of Experimental Marine Biology,Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,China;University of Chinese Academy of Sciences,Beijing 100049,China;Center for Ocean Mega-Science,Chinese Academy of Sciences,Qingdao 266071,China)

机构地区：[1]中国科学院海洋研究所实验海洋生物学重点实验室,山东青岛266071 [2]中国科学院大学,北京100049 [3]中国科学院海洋大科学研究中心,山东青岛266071

出　　处：《海洋科学》2022年第5期122-130,共9页Marine Sciences

基　　金：国家重点研发计划项目(2019YFD0900502);广西科技重大专项(桂科AA17204094-3)。

摘　　要：本实验基于一种新型的具有自洁功能的固定床生物滤器,研究了不同的清洗频率:0.5次/d(S1)、1次/d(S2)和2次/d(S3)对生物滤器的硝化性能、截污能力和硝酸盐氮积累的影响。研究表明:清洗频率对生物滤器去除氨氮(NH^(+)_(4)-N)没有显著影响(P>0.05);在第6~9 d对生物滤器内亚硝酸盐氮(NO^(-)_(2)-N)的浓度有显著影响(P<0.05),第11 d后均无显著影响(P>0.05);在整个实验过程中,S3处理组与S1、S2处理组相比总固体悬浮物(TSS)去除分别提高53.52%和19.01%,化学需氧量(COD_(Mn))去除分别提高57.94%和27.01%,差异性显著(P<0.05);在硝酸盐氮(NO^(-)_(3)-N)积累方面,S3处理组积累最少,在整个实验过程期间与S1、S2处理组相比分别降低16.04%和23.01%,差异性显著(P<0.05)。总体来说,高清洗频率对生物滤器的硝化性能无显著影响,但能使生物滤器截留的TSS快速排出系统,从而减少系统内的水处理负荷和硝酸盐氮积累,有利于系统的长期稳定运行。The experiment is based on a new type of fixed bed biofilter with a auto-cleaning function.Different cleaning frequencies were studied,such as 0.5 times/d(S_(1)),1 time/d(S_(2)),and 2 times/d(S_(3))for biological filters,and the influence of nitrification performance,pollution interception capacity,and nitrate nitrogen accumulation.Studies have shown that the cleaning frequency has no significant effect on the removal of ammonia nitrogen(NH^(+)_(4)-N)from the biofilter(P>0.05);it has a significant effect on the concentration of nitrite nitrogen(NO^(-)_(2)-N)in the biofilter from days 6 to 9(P<0.05),but there was no significant effect after the 11^(th) day(P>0.05).During the entire experiment,the total solid suspended solids(TSS)removal in the S_(3) treatment group was increased by 53.52%and 19.01%compared with the S_(1) and S_(2) treatment groups,respectively;chemical oxygen demand(COD_(Mn))removal increased by 57.94%and 27.01%,respectively,which had a significant difference(P<0.05);the accumulation of nitrate nitrogen(NO^(-)_(3)-N)in the S_(3) treatment group was the least,which was 16.04%and 23.01%lower than that in S_(1) and S_(2) treatment groups during the whole experiment,respectively,and the difference was significant(P<0.05).High cleaning frequency has no significant effect on nitrification performance of the biofilters;however,it may reduce the water treatment load and NO^(-)_(3)-N accumulation in the system by rapidly removing the TSS retained by biofilters;it is beneficial to the long-term stable operation of the system.

关 键 词：自洁生物滤器 清洗频率 硝化性能 截污能力 

分 类 号：X703.1[环境科学与工程—环境工程]