垃圾渗滤液处理的试验研究

Experiment Research on Leachate Treatment of Sanitary Landfill for Municipal Solid Waste

国内垃圾渗滤液处理一直是个难以解决的问题。传统的生物处理法和物化方法 ,不是难以达标就是运行费用高。作者引进日本新技术 :木屑 -微生物系统对渗滤液处理进行了现场试验研究。处理系统由 3个好氧消化槽和 1个反应槽构成 ,将按一定粒度大小比例组合的经处理的木质碎粒投放于消化槽和反应槽中 ,污水中的有机物在消化槽中经反复的好氧厌氧分解 ,达到去处的目的。试验通过改变进水速率和不同的曝气方式 ,观测生物系统的变化和处理效果的变化 ,以寻求达到最佳处理效果的工况参数。试验表明 ,该处理系统对垃圾渗滤液的处理效果较好 ,特别对氨氮的去除较高 ,BOD的去除率达90 %以上 ,基本可达垃圾渗滤液二级到三级排放标准。但BOD的负荷最高一般不应超过 4kg m3·d 。

It is difficult to treat landfill leachate in China.Traditional biologic method and physical method always have high expenses,or cann't reach the discharge standards.The authors use a new biologic method to treat landfill leachate,which is the Wood_microbial System from Japan.The system to be digested by 3 aeration tanks and 1 reaction tank.The comparison combine processed wool_dust broken pieces with the certain grain degree size were throw in the tanks.Dirty and organic matter are in the digest tanks through the aeration reaction and aneration reaction repeatedly.In this experiment the speed of wastewater discharge and oxygen supply has been changed, and the change of biologic system and the effect of pollutant are removed. The optimal treatment condition can be found.The experiment shows that the system has a good result,special for nitrogenous.The BOD is average to do away with the rate to amount to 90%,almost reach the second class or third class for leachate standard.But BOD loading should be not beyond 4 kg/(m 3.d),othrwise,the system will not operate in normally.