污泥转移对新型SBR工艺除磷的影响  

Effect of sludge shifting volumes on the phosphorus removal in the modified SBR process

作　　者：邓猛[1] 潘杨[1] 陈晓杰[1] 俞苗新[1] 陈茜茜[1] 

机构地区：[1]苏州科技学院环境工程与科学学院,江苏苏州215009

出　　处：《安全与环境学报》2016年第2期288-292,共5页Journal of Safety and Environment

基　　金：江苏省自然科学基金项目(BK2011315);江苏省高校自然科学研究重大项目(14KJA610001);江苏省"333"学术带头人培养工程项目(331491201);江苏高校优势学科建设工程项目;江苏省水处理协同创新中心项目

摘　　要：污泥转移SBR工艺由并联运行的SBR反应器和连续运行的生物选择器构成,其显著特点是通过污泥回流实现除磷优势菌种的筛选,强化除磷效果。以生活污水为处理对象,研究了污泥转移15%、30%、40%时厌氧释磷和好氧吸磷的情况。结果表明:厌氧段胞内聚-β-羟基丁酸(PHB)合成量随污泥转移量提高先上升后基本持平,与释磷量变化趋势相同;静态试验结果显示,厌氧释磷速率随污泥转移量增加而提高,污泥转移15%、30%、40%的比释磷速率分别为6.23 mg P/(g MLSS·h)、9.88 mg P/(g MLSS·h)、12.97 mg P/(g MLSS·h);随污泥转移量提高,好氧末端胞内聚磷酸盐合成量变化趋势与吸磷量变化趋势相同,也表现为先上升后基本持平;当污泥转移30%时系统除磷效果最佳,总磷(TP)去除率为96.7%±1.9%,污泥转移40%的TP去除率与30%的相近,且均高于污泥转移15%的。研究表明,通过控制适宜的污泥转移量能够筛选富集除磷微生物,达到强化除磷的目的。With the domestic sewage as the object under study,this paper is dedicated to the study of the effects of phosphorus anaerobic release and the aerobic uptake at different cycling ratios of the sludge,such as 15%,30% and 40%. Since the SludgeShifting SBR Process consists of multi-SBRs and a continuously running bio-selector,it may help us to achieve the goal of screening dominant bacteria from the phosphorus removal and strengthen the said removal effect by transferring the activated sludge in taking the advantage of the remarkable characteristics of the SBR Process. The results of our study suggest that,with the sludge re-cycling rate increased,the synthetic amount of PHB at the anaerobic zone tends to rise at first and then get basically balanced to the same level as the release amount of the trend of phosphorus.At the same time,the static testing results also show that its rate also tends to increase with the rise of the sludge cycling ratio. In so doing,when the sludge recycling ratio reached 15%,30%and 40%,the releasing rate of the specific phosphorus turns to be6. 23 mg P /（ g MLSS · h）,9. 88 mg P /（ g MLSS · h）,and12. 97 mg P /（ g MLSS·h）,respectively. Furthermore,we have also found that,at the end of the aerobic zone,the amount of intracellular polyphosphate also enjoys the same trend as that mentioned above with the phosphorus. Moreover,when the sludge recycling ratio reached 30%,it can be said that the phosphorus removal efficiency has reached its optimum stage with the removal rate of the total phosphorus（ TP） being 96. 7% ± 1. 9%. In addition,the TP removing rate at the sludge cycling ratio of 40%was similar to that at the sludge cycling ratio of 30%,and both of them prove to be higher than that at the sludge cycling ratio of15%. Thus,it can be concluded that it would be possible for the Sludge-Shifting SBR Process to help to enrich the phosphorus accumulative organisms and enhance the biological phosphorus removal by transferring the adaptive activated sludge.

关 键 词：环境工程学 SBR工艺 聚磷酸盐 污泥转移 生物除磷 

分 类 号：X703[环境科学与工程—环境工程]