城市固体废物好氧生物反应器填埋方式的实验研究

Experimental research on MSW aerobic bioreactor landfilling

MSW(城市固体废物)生物反应器型填埋是一种较新颖的方法。在系统分析现有填埋方法优缺点的基础上,对其加以改进,将强制通风好氧和渗滤液循环2种方式有机地结合在一起,构建了MSW好氧生物反应器。考察了NH3、CH4、CO2、pH和温度等因素,并监测分析了渗滤液中的COD、BOD5、Zn2+、NH4+和NO3-等指标,旨在研究其中垃圾的降解及渗滤液中COD、BOD5、Zn2+、NH4+和NO3-的去除情况,探讨该生物反应器对垃圾和渗滤液相关参数的作用机理。结果表明,该反应器对渗滤液中COD、BOD5、NO3-的去除率分别达到96.34%、94.58%和99.9%,对其中的Zn2+也有较好的脱除效果。

MSW bioreactor landfill is an emerging landfilling method. On the basis of analyzing the merits and defects of present landfilling methods, these methods are improved and organically forced aeration and leachate recirculation are combined into MSW aerobic bioreactor. During the experiment, NH3 , CH4, CO2 , pH and temperature, etc, have been reviewed, meanwhile, COD, BOD5, Zn^2 ＋ , NH4^＋ and NO3^- have been detected and analyzed, which is to research on the waste degradation and the removal of COD, BOD5, Zn^2 ＋ , NH4^＋ and NO3^- , probe into the funtion mechanicses of the reactor to wastes and leachate. The result indicates that the removal rates of COD,BOD5, NO3^- are 96.34% , 94.58% and 99.9% respectively, and the effect to remove Zn^2＋ is preferable.