联合生物反应器处理农村生活垃圾渗滤液中Fe的变化规律  

Change law of Fe in hybrid bioreactor leachate treating household solid wastes

作　　者：李红[1] 郑敏[2] 刘庆梅[1] 昝丽 刘丹[1] 

机构地区：[1]西南交通大学地球科学与环境工程学院,成都611756 [2]中铁二院工程集团有限责任公司,成都610031

出　　处：《环境工程学报》2016年第12期7001-7006,共6页Chinese Journal of Environmental Engineering

基　　金：基金项目 农村及小城镇生活垃圾填埋场的快速稳定化技术研究(VR01HX11351308611350)

摘　　要：以厌氧(AN)-准好氧(SA)联合生物反应器中渗滤液pH、COD、UV254、NH3-N以及铁离子浓度的监测结果为依据,研究了厌氧-准好氧联合生物反应器处理农村生活垃圾产生的渗滤液中Fe的变化规律。结果表明,渗滤液中Fe的浓度随时间变化规律为先上升后下降,在填埋第76天左右,厌氧和准好氧单元中Fe的浓度先后达到最大值73.44和78.71mg·L^(-1);在第350天,厌氧和准好氧单元中Fe的浓度分别降至17.84和8.52 mg·L^(-1)。Pearson相关分析显示渗滤液中铁离子的浓度与COD之间存在显著的正相关关系;与pH、NH3-N之间存在负相关关系;而与UV254之间的相关关系较弱。In this work,the change law of Fe was studied in anaerobic（ AN）-semi-aerobic（ SA） bioreactor leachate created by treating household solid wastes. Changes were related to pH,UV254 value,COD,NH3-N,and the iron concentration of the leachate. Results indicated that the leachate iron concentrations of anaerobic and semi-aerobic units increased with time and peaked at 73. 44 and 78. 71 mg·L^-1,respectively,after about76 d,and then decreased to 17. 84 and 8. 52 mg·L^-1,respectively,by 350 d. Pearson correlation analysis revealed that the leachate iron concentration displayed a significant positive correlation with COD,and a negative correlation with pH and NH3-N. There was no relationship between leachate iron concentration and UV254.

关 键 词：厌氧-准好氧 生物反应器 农村生活垃圾 铁 

分 类 号：X703.5[环境科学与工程—环境工程]