摘要
将剩余污泥臭氧化与A/A/O工艺系统耦合,在3种回流方式下,研究了臭氧耦合A/A/O系统的污泥减量效果和污水处理效能。结果表明,臭氧耦合A/A/O系统污泥减量效果明显,20 d内,3种不同回流方式下累积排泥量较传统A/A/O工艺系统分别下降了51.3%、49.8%、47.6%。臭氧化污泥回流对系统出水COD无明显冲击,同时提高了污泥沉降性和系统的脱氮能力。臭氧化污泥回流至厌氧区时系统TP去除率下降,而回流至缺氧区时则可以小幅提升TP去除率。综合考虑污泥减量效果和污水处理效能,认为将臭氧化污泥等比例回流至厌氧区和缺氧区为最佳回流方式。
Coupled the ozonation of excess sludge with A/A/O process system, the sludge reduction effect and sewage treatment efficiency by ozone coupled A/A/O system were investigated under three reflux modes. The results showed that the effect of sludge reduction was obvious by ozone coupled A/A/O system, and the cumulative sludge discharge under three reflux modes within 20 d decreased by 51.3%, 49.8% and 47.6% compared with the traditional A/A/O process system, respectively. The reflux of ozonation sludge had no obvious impact on the system effluent COD, and improved the sedimentation of sludge and the denitrification capacity of system. The TP removal rate decreased when ozonation sludge returned to anaerobic zone, however, it increased when ozonation sludge returned to hypoxic zone. Considering the effect of sludge reduction and efficiency of sewage treatment, it was concluded that the optimal reflux mode was to return ozonation sludge to anaerobic zone and anoxic zone in equal proportion.
作者
任宏洋
彭磊
王兵
刘璞真
REN Hongyang;PENG Lei;WANG Bing;LIU Puzhen(College of Chemistry and Chemical Engineering,Southwest Petroleum University;China petroleum Key Laboratory of HSE,Research Laboratory of Southwest Petroleum University:Chengdu 610500,China)
出处
《水处理技术》
CAS
CSCD
北大核心
2019年第12期105-109,共5页
Technology of Water Treatment
基金
四川省科技支撑计划项目（15ZC1322）
