| 引用本文: | 唐金花,许国仁,萧静,Ludovico Spinosa,李圭白.Fe2(SO4)3对活性污泥微生物活性的影响[J].哈尔滨工业大学学报,2012,44(6):1.DOI:10.11918/j.issn.0367-6234.2012.06.001 |
| TANG Jin-hua,XU Guo-ren,XIAO Jing,Ludovico Spinosa,LI Gui-bai.The effect of Fe2(SO4)3 on microbial activity of activated sludge[J].Journal of Harbin Institute of Technology,2012,44(6):1.DOI:10.11918/j.issn.0367-6234.2012.06.001 |
|
| 摘要: |
| 为了解Fe2(SO4)3作为絮凝剂对活性污泥中微生物活性的影响,向活性污泥系统中投加质量浓度为20、40、60、80,100 mg·L-1的Fe2(SO4)3,反应4 h后测定活性污泥的脱氢酶活性、比耗氧速率(RSOU)、胞外聚合物(EPS)及各组分含量,同时测定系统出水的COD等各项指标．结果表明:Fe2(SO4)3质量浓度在20～60 mg·L-1时对活性污泥的脱氢酶活性、RSOUEPS及各组分含量影响均不大,此时污水中COD、TP、UV254等污染物随Fe2(SO4)3质量浓度增加而有较大幅度去除．Fe2(SO4)3质量浓度为80 mg·L-1时,污泥的脱氢酶活性、RSOU、总EPS含量均明显下降．当Fe2(SO4)3质量浓度增加到100 mg·L-1时,污泥的脱氢酶活性、RSOU进一步受到抑制,而总EPS含量则大幅度提升．此时污水中COD、TP、UV254等污染物去除率增加幅度变缓,SCOD及NH3-N去除作用有所下降． |
| 关键词: Fe2(SO4)3 脱氢酶活性 比耗氧速率(RSOU) 胞外聚合物(EPS) |
| DOI：10.11918/j.issn.0367-6234.2012.06.001 |
| 分类号:X5032 |
| 基金项目:国家高技术研究发展计划重点资助项目(2009AA064704);国家自然科学基金重点项目((51038003); 教育部新世纪优秀人才计划资助项目(NCET-08-161） |
|
| The effect of Fe2(SO4)3 on microbial activity of activated sludge |
|
TANG Jin-hua1,2, XU Guo-ren1, XIAO Jing1, Ludovico Spinosa3, LI Gui-bai1
|
|
1.State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, 150090 Harbin, China;2.Dept. of Food and Environmental Engineering, Heilongjiang East University, 150001 Harbin, China;3.Dept. of Environmental Engineering and Sustainable Development, Technical University of Bari, 74100 Taranto, Italy)
|
| Abstract: |
| To study the effect of Fe2(SO4)3 as flocculant on microbial activity of activated sludge, Fe2(SO4)3 in dosages of 20,40,60,80,100 mg·L-1 was dropped into ASS and four hours latter DHA, RSOU and EPS content were examined as well as COD et al. The results showed that DHA, RSOU and EPS content were insensitive to Fe2(SO4)3 in range of 20-60 mg·L-1, and the removal rates of COD, TP and UV254 in effluent increased greatly with the concentration of Fe2(SO4)3increased. When the concentration of Fe2(SO4)3 was 80 mg·L-1, DHA, RSOU and EPS content decreased distinctly. When the concentration of Fe2(SO4)3 was 100 mg·L-1, DHA and RSOUwere inhibited further, whereas total EPS content increased greatly. Meanwhile the removal rates of COD, TP and UV254 in effluent increased slowly, and the removal rates of SCOD and NH3-N tended to decline. |
| Key words: Fe2(SO4)3 DHA specific oxygen uptake rate(RSOU) extracellular polymeric substances |
