正渗透耦合厌氧工艺回收市政污水碳源  

Carbon source recovery of municipal sewage by forward osmosis coupled anaerobic process

作　　者：郭文萱 张壹超 杨鹏飞 朱芳琳 刘志强[1] GUO Wenxuan;ZHANG Yichao;YANG Pengfei;ZHU Fanglin;LIU Zhiqiang(School of Environmental and Municipal Engineering,Qingdao University of Technology,Qingdao 266033,China)

机构地区：[1]青岛理工大学环境与市政工程学院,山东青岛266033

出　　处：《南京工业大学学报（自然科学版）》2023年第4期461-466,共6页Journal of Nanjing Tech University(Natural Science Edition)

摘　　要：以市政污水为研究对象,混凝、吸附为预处理工艺,正渗透和厌氧生物反应器为主体工艺,研究市政污水经碳源浓缩、厌氧消化后实现气体回收、能量自给的可能性。结果表明:复配投加80 mg/L的聚合氯化铝和40 mg/L的活性炭时市政污水化学需氧量(COD)和浊度的去除效果最好,经正渗透浓缩后市政污水中COD可浓缩至4621 mg/L,是原质量浓度的9.7倍;当混凝吸附污泥和厌氧污泥比例为4∶5,水力停留时间为24 h,氨氮(NH_(3)-N)和NaCl质量浓度分别低于500 mg/L和10 g/L时,碳源浓缩液的产气效率最高。Taking municipal sewage as the research object,coagulation and adsorption as the pretreatment unit,and forward osmosis and anaerobic bioreactor as the main process,the possibility of gas recovery and energy self-sufficiency after carbon source concentration and anaerobic digestion of municipal sewage was studied.Results showed that the removal effect of chemical oxygen demand(COD)and turbidity in municipal wastewater was the best when 80 mg/L polyaluminium chloride and 40 mg/L activated carbon were mixed.After forward osmosis concentration,COD in municipal wastewater could be concentrated to 4621 mg/L,which was 9.7 times of the original concentration.When the ratio of coagulation and anaerobic sludge was 4∶5,the hydraulic retention time was 24 h,and the concentrations of ammonia nitrogen and sodium chloride were lower than 500 mg/L and 10 g/L,respectively,the gas production efficiency of carbon source concentrate was the highest.

关 键 词：正渗透 市政污水 碳源浓缩 碳中和 厌氧消化 

分 类 号：X703[环境科学与工程—环境工程] TQ028.8[化学工程]