石灰石改性硫磺材料深度脱氮除磷研究  

Advanced removal nitrogen and phosphorus by limestone-modified sulfur material

作　　者：罗黎煜 周立松 王梦良 张陈永 刘波[1] LUO Liyu;ZHOU Lisong;WANG Mengliang;ZHANG Chenyong;LIU Bo(State Key Laboratory of Pollution Control and Resource Reuse,School of the Environment,Nanjing University,Nanjing 210046,China)

机构地区：[1]南京大学环境学院,污染控制与资源化研究国家重点实验室,江苏南京210046

出　　处：《工业水处理》2022年第1期77-84,共8页Industrial Water Treatment

基　　金：国家科技重大专项子课题(2017ZX07602-001-02)。

摘　　要：为了使污水处理厂出水中的氮、磷浓度进一步降低,制备出了一种石灰石改性硫磺材料,通过批次实验和生物滤池实验探究其脱氮除磷性能。结果表明,硫磺/石灰石体积比为3∶1的改性材料脱氮除磷效果最佳,发泡可以提高改性材料脱氮除磷性能,改性材料对HRT有较好的适应性。当HRT=1 h,进水NO_(3)^(-)-N、PO_(4)^(3-)-P分别为20、1 mg/L时,生物滤池NO_(3)^(-)-N、PO_(4)^(3-)-P去除率分别高于89%、65%。微生物群落分析显示,生物滤池中硫自养反硝化菌丰度大于79%。In order to reduce the concentration of nitrogen and phosphorus in the effluent of sewage treatment plant,a limestone-modified sulfur material was prepared.Through batch experiments and biological filter experiments,the nitrogen and phosphorus removal efficiency of the modified material was studied.The results showed that modified material with sulfur/limestone volume ratio of 3∶1 had the best nitrogen and phosphorus removal effect,and the nitrogen and phosphorus removal performance was improved by foamed modified material.The modified material had good adaptability to HRT.The removal efficiency of nitrate and phosphate was over 89% and 65% respectively with 20mg/L NO_(3)^(-)-N and 1 mg/L PO_(4)^(3-)-P in influent at 1 h HRT.The results of microbial community analysis showed that sulfur autotrophic denitrifying bacteria accounted for 79%in the filter.

关 键 词：改性硫磺材料 脱氮除磷 发泡 微生物群落 

分 类 号：X703.1[环境科学与工程—环境工程]