摘要
为探究不同厌氧运行方式对亚硝化恢复的影响,在常温(20±2)℃下,采用两组两级连续搅拌反应器(CSTR)1#和2#,实验分为S1、S2和S3三个阶段.在S1阶段1#采用厌氧/厌氧运行(两级DO均为0~0.1 mg/L),2#采用厌氧/好氧运行(两级DO分别为0~0.1和0.6~0.8 mg/L);在S2阶段1#转变为好氧/好氧运行(两级DO分别为0.2~0.4和0.6~0.8 mg/L),2#保持厌氧/好氧不变(两级DO分别为0~0.1和0.6~0.8 mg/L);在S3阶段,研究恢复后亚硝化的稳定性,此时1#、2#两级DO均为1.0~1.2 mg/L.分别对此过程中亚硝化的恢复时间以及恢复后稳定性进行比较.结果表明,1#的恢复时间比2#缩短了12 d,但当溶解氧增加到1.0~1.2 mg/L时,2#恢复后的亚硝化更稳定.先厌氧/厌氧(两级DO均为0~0.1 mg/L)后好氧/好氧运行(两级DO分别为0.2~0.4和0.6~0.8 mg/L),有利于亚硝化的快速恢复,恢复后转变为厌氧/好氧运行(两级DO分别为0~0.1和0.6~0.8 mg/L)有助于亚硝化的长期稳定运行.
To investigate different effects of anaerobic modes on recovery of partial nitrification（ PN）,two-stage continuous stirred-tank reactors（ CSTR） 1# and 2# were used at room temperature（ 20±2） ℃. The experiment had three stages（ S1,S2 and S3）.During S1,1# was maintained anaerobic/anaerobic（ DO： 0-0.1,0-0.1 mg/L）,2# was maintained anaerobic/oxic（ DO： 0-0.1,0.6-0.8 mg/L）. During S2,1# was maintained oxic/oxic（ DO： 0.2-0.4,0.6-0.8 mg/L）,2#was continually maintained anaerobic/oxic（ DO： 0-0.1,0.6-0.8 mg/L）. To investigate stability of PN after recovery,S3 was carried out. During S3,1# and 2# was maintained oxic/oxic（ DO： 1.0-1.2,1.0-1.2 mg/L） The following paremeters（ time of recovery of PN and stability of PN） were investigated. It demonstrated that the recovery time of 1# was shorter than that of 2# by 12 d. However,PN in 2# was more stable when DO increased to 1.0-1.2 mg/L. Efficient PN could be recovered by the mode of first anaerobic/anaerobic（ DO： 0- 0. 1,0- 0. 1 mg/L） then oxic/oxic（ DO： 0. 2- 0. 4,0. 6-0.8 mg/L）. Afterwards,stable PN could be maintained by anaerobic/oxic（ DO： 0-0.1,0.6-0.8 mg/L）.
出处
《哈尔滨工业大学学报》
EI
CAS
CSCD
北大核心
2017年第2期1-5,共5页
Journal of Harbin Institute of Technology
基金
北京市长城学者项目
北京市市委组织部青年拔尖团队项目(2014000026833TD02)
关键词
生活污水
亚硝化
连续搅拌反应器
厌氧/厌氧
好氧/好氧
厌氧/好氧
domestic wastewater
partial nitrification
continuous stirred-tank reactor（CSTR）
anaerobic/anaerobic
oxic/oxic
anaerobic/oxic
