摘要
在3个相同的反应器(No.1、No.2、No.3)中,向活性污泥中投加异养硝化微生物菌剂,以批次试验和SBR试验的方式,研究了异养硝化微生物菌剂对模拟废水的处理效果.结果表明,该菌剂可以大幅度提高活性污泥对氨氮和COD的去除率.批次运行试验中,反应器No.1运行3d,氨氮去除率大于98.11%,COD去除率大于99%.该投加菌剂的活性污泥每克干污泥的脱氮能力为15.77mgd-1.以SBR方式运行16d的试验中,可能是由于功能菌株的流失导致3个反应器的脱氮效果有逐步降低的趋势.采用该异养硝化脱氮微生物菌剂培育出的异养硝化好氧颗粒污泥对模拟废水进行了脱氮试验.在较低运行温度(11～13℃)下以SBR方式运行10d,反应器处理效果稳定,氨氮去除率70.75%～76.42%,COD去除率在90%以上.该异养硝化好氧颗粒污泥每克干颗粒的脱氮能力为372.00mgd-1.以上试验都没有发现硝酸氮和亚硝酸氮的积累.
Artificial wastewater was treated by heterotrophic nitrification microbial consortium mixed with activated sludge in three identical reactors （No.1, No. 2 and No. 3） both in batch experiment and SBR experiment. The results showed that the microbial consortium improved both denitrification rate and COD-removal rate. During the first batch experiment of reactor No.1, N-removal rate was more than 98.11% and COD-removal rate was over 99% on the third day. The N-removal capacity of every gram dried activated sludge mixed with heterotrophic nitrification microbial consortium was 15.77 mg d^-1. During a 16-day SBR experiment, the effects of all the three reactors decreased gradually maybe due to the loss of heterotrophic nitrification bacteria. So, the treatment of the artificial wastewater by the heterotrophic nitrification aerobic granular sludge, which was developed from the heterotrophic nitrification microbial consortium, was studied. The reactor was operated in a SBR mode at low temperature （11-13 ℃） for 10 days. The denitrification rate reached to 70.75%-76.42%, the COD-removal rate was over 90%. The average N-removal capacity of every gram dried heterotrophic nitrification aerobic granular sludge was 372.00 mg d^-1. Neither nitrite nor nitrate accumulation was detected in all the experiments.
出处
《应用与环境生物学报》
CAS
CSCD
北大核心
2009年第3期356-360,共5页
Chinese Journal of Applied and Environmental Biology
基金
国家高技术研究发展计划专项经费资助("8 6 3"项目
N o.2006AA06Z330)~~
关键词
异养硝化微生物菌剂
异养硝化好氧颗粒污泥
脱氮
COD去除
heterotrophic nitrification microbial consortium
heterotrophic nitrification aerobic granular sludge
denitrification
COD removal
