三价砷对SBRs反应系统中活性污泥的影响研究  

Effect of As(Ⅲ) on Activated Sludge Character in SBRs System

作　　者：王岩[1] 刘奉滨[1] 郎龙麒[1] 万俊锋[1] 

机构地区：[1]郑州大学化工与能源学院,河南郑州450001

出　　处：《郑州大学学报（工学版）》2013年第5期109-112,共4页Journal of Zhengzhou University（Engineering Science）

基　　金：国家自然科学基金资助项目(21107100);郑州市国际科技合作与交流项目(121PPTGG360-9)

摘　　要：研究了三价砷As(Ⅲ)对序批式反应器SBRs系统中活性污泥的影响.采用反应器R1和R2(对照CK)进行对比试验,向R1中逐渐添加不同浓度的三价砷As(Ⅲ),定期检测两组反应器内活性污泥性状和出水水质.结果表明,整个实验过程中R1系统对COD去除率维持在90%左右,比R2系统低大约5%;随着三价砷浓度的提高,R1系统内污泥絮体直径变小且分散,SVI30由原来的37 mL/g提高至97mL/g,可能是部分微生物中毒引起絮体分解所致;与R2系统相比,R1内微生物种类相对单一,特别在高浓度三价砷(20 mg/L)条件下,后生动物消失.This paper studies the effect of As （Ⅲ ） on the activated sludge in the sequencing batch reactor system. R1 and R2 （control CK） were installed for contrast test. As（ Ⅲ ） was increasingly added in R1 and the activated sludge character and effluent quality were termly tested. The results showed that COD removal rate of R1 maintained at ca. 90% which is 5% lower than that of R2. With stepwise augmentation of As （ Ⅲ ） , the flocs became disperse and tiny, SVI30 increased from 37 mL g^-1 to 97 mL g-1, which was proba- bly due to the decomposed structure of flocs caused by partial microorganisms poisoning. Compared with R2, the microbiological diversity was relatively simple, especially the protozoa disappeared under the high concen- tration of As（ Ⅲ ）.

关 键 词：三价砷 SBRs系统 污泥活性 沉降性能 

分 类 号：X523[环境科学与工程—环境工程]