厌氧与准好氧生物反应器填埋场渗滤液水质变化及脱氮特性对比研究  

Comparison of anaerobic and semi-aerobic bioreactor landfills on variation of leachate quality and nitrogen removal characteristics

作　　者：王亚楠[1,2] 孙英杰[2] 吴昊[2] 张欢欢[2] 姜海钰[2] 卞荣星[2] 

机构地区：[1]同济大学环境科学与工程学院,上海200092 [2]青岛理工大学环境与市政工程学院,山东青岛266033

出　　处：《环境污染与防治》2013年第10期5-11,共7页Environmental Pollution & Control

基　　金：国家自然科学基金资助项目(No.51178229);山东省自然科学基金资助项目(No.ZR2010EL031);山东省高等学校科技计划项目(No.J09LB12)

摘　　要：将新鲜垃圾分别装填到厌氧柱和准好氧柱中模拟厌氧生物反应器填埋场和准好氧生物反应器填埋场,其中厌氧柱和准好氧柱分别运行190、262d。通过考察渗滤液水质变化,对比分析了厌氧柱与准好氧柱内垃圾稳定化进程及脱氮特性。结果表明,厌氧柱垃圾稳定化程度很低且出现NH+4-N积累的现象。相反,准好氧柱显著加速了垃圾的稳定化进程,实验结束时渗滤液COD和挥发性脂肪酸(VFA)的去除率分别达98.0%和99.5%,柱内SO2-4/Cl-小于0.1,明显低于厌氧柱(SO2-4/Cl-在0.4左右波动);准好氧柱中NH+4-N和TN的去除率高达96.3%、96.9%,在52～126d的运行期内,NH+4-N去除速率约为19mg/(L·d),表明准好氧柱具有很强的原位脱氮能力。综上可知,准好氧生物反应器填埋场比厌氧生物反应器填埋场有明显的技术优势。Two fresh refuse bioreaetors were operated to simulate the anaerobic and semi-aerobic bioreactor landfills, respectively. The anaerobic bioreactor and semi-aerobic bioreactor were operated for 190 d and 262 d. Comparing the leachate variation characteristics in anaerobic and semi-aerobic bioreactors,the stabilization process and nitrogen removal characteristics of the bioreactors were investigated. Results demonstrated that the stabilization degree of refuse was very low and ammonia nitrogen accumulation was observed in anaerobic bioreactor. Conversely, the semi- aerobic bioreactor can significantly accelerate the stabilization process of refuse, the removal rate of COD and VFA were 98.0~ and 99.5 ~ in semi-aerobic bioreactor,respectively. The value of SOl-/CI- in the semi-aerobic bioreactor was below 0.1,which was much lower than that in the anaerobic bioreactor with the value fluctuating around 0.4. The removal rate of NH[-N and TN were 96.3 % and 96.9 % in semi-aerobic bioreactor, respectively. During the period of day 52 to day 126,a high velocity of ammonia removal,which is about 19 mg/（L. d）,was achieved. It indicated that there was strong nitrogen removal ability in semi-aerobic bioreactor.

关 键 词：厌氧生物反应器填埋场 准好氧生物反应器填埋场 渗滤液 稳定化 脱氮特性 

分 类 号：X703[环境科学与工程—环境工程]