H-A-O工艺强化脱氮及系统内污泥减量的研究  

Enhanced nitrogen removal and internal sludge reduction by H-A-O technology

作　　者：彭永臻 高永青 张晶宇 王淑莹 王建龙[1,2] 

机构地区：[1]北京市水质科学与水环境恢复工程重点实验室,北京100124 [2]北京建筑工程学院环境与能源工程学院,北京100044

出　　处：《中南大学学报（自然科学版）》2011年第6期1813-1818,共6页Journal of Central South University:Science and Technology

基　　金：国家自然科学基金资助项目(50808128);北京高校人才强教计划高层次人才资助项目(PHR20090502);北京市教委科技创新平台项目(PXM2008_014204_050843)

摘　　要：为提高生活污水传统处理工艺反硝化脱氮能力并在系统内部实现污泥减量,设计水解酸化-缺氧-好氧（H-A-O）生物脱氮及污泥减量组合工艺。试验采用连续运行方式,以实际生活污水为对象,进水化学需氧量（COD）为220~410 mg/L,进水NH4＋-N质量浓度为36~58 mg/L,硝化液回流比（r）为300%。试验结果表明：水解酸化作用使原水的可生化性提高60%;系统在无外加碳源和碱度条件下,COD,NH4＋-N和TN的去除率分别达到90%,95%和74%,其中总氮（TN）去除效果提高12%;当以污泥水解酸化出水和生活污水作为反硝化碳源时,最大NO3--N反硝化速率分别为0.75 mg/min和0.66 mg/min;H-A-O系统利用水解酸化作用实现剩余污泥减量为37%,同时提高系统的脱氮效果。A hydrolysis-anoxic-oxidation（H-A-O） combined system for enhanced nitrogen removal and waste activated sludge（WAS） reduction within the process was designed.This combined system was conducted continuously,and domestic wastewater was treated.Influent chemical oxygen demand（COD） and NH4＋-N concentration were 220-410 mg/L and 36-58 mg/L,and the ratio of nitrification liquid return（r） was 300%.Experiment results indicate that domestic wastewater biodegradability increases by 60% under the function of hydrolysis and acidification.Without external C-source and alkalinity addition,COD,NH4＋-N and TN removal efficiency in this system reach 90%,95% and 74%,where total nitrogen（TN） removal efficiency increases by 12%.When WAS hydrolysis effluent and domestic wastewater are used as denitrifiction C-source respectively,the average maximum NO3——N denitrification rate reaches 0.75 mg/min and 0.66 mg/min.Finally,sludge reduction rate by hydrolysis and acidification technology in H-A-O system reaches 37%.It can be concluded that nitrogen removal efficiency is enhanced.

关 键 词：水解酸化 脱氮 污泥减量 

分 类 号：X703.1[环境科学与工程—环境工程]