摘要
采用改良SBR处理人工模拟高氨氮有机废水,在不同硝化液内循环比条件下,比较NH3-N和CODCr的去除效果,同时研究了改良SBR反应器的污泥特性。结果表明,在曝气时间为3h、水力停留时间为8h、进水CODCr为1000mg·L-1、回流比为200%条件下,CODCr去除率达到89.7%,NH3-N去除率达到73.6%。通过试验研究出MSBR活性污泥产率系数Y与活性污泥微生物的自身氧化率Kd分别为0.8952和0.0527。
A Modified SBR, divided into two parts including anaerobic selecti o n zone and aerobic reaction zone, is different from normal SBR or CAST from the view of reactor structure. Inner circulation of nitration liquid was enhanced fo r MSBR that adopted the mode of continuous wastewater inlet and intermittent out let. When the simulated high strength wastewater with high ammonia was treated w ith modified SBR, the removal rates of NH3-N and CODCr were compared under dif ferent inner circulation ratio of nitration liquid and different HRT (hydraulic retention time), the sludge characteristic of MSBR was also studied. The experim ental result showed that the removal rates of NH3-N and CODCr reached up to 89 .7%and 73.6%respectively under HRT=8 h, aeration time=3 h,CODCr=1 000 mg· L-1, inner circulation ratio of nitration liquid=200%. The sludge productio n coefficient (Y) and sludge microbial oxygenation ratio (Kd) were 0.8952 and 0. 052 7 respectively. MSBR was available for the treatment of organic wastewater c ontaining ammonia.
出处
《农业环境科学学报》
CAS
CSCD
北大核心
2004年第5期1009-1013,共5页
Journal of Agro-Environment Science
基金
天津市自然科学基金重点项目(023804211)
关键词
改良SBR
高氨氮有机废水
内循环
污泥特性
MSBR (Modified Sequencing Batch Reactor)
capability
organic wast ewater containing ammonia
inner circulation
sludge characteristic
