不同气候条件准好氧填埋单元试验研究

Pilot-Scale Experiment of Semi-Aerobic Landfill in Different Climate Conditions

为验证准好氧填埋在不同气候条件下的适用性,分别在峨眉山市亚热带季风气候和青藏高原气候2种不同气候条件下,对准好氧填埋单元垃圾的降解进行了试验研究.研究结果表明:在气温较高、气候比较潮湿的峨眉山试验单元,垃圾降解速度较快,渗滤液COD质量浓度在经过419 d后就能达到渗滤液国家一级排放标准的要求;而在青藏高原试验单元,经过733 d后才能达到相同的排放标准;准好氧填埋单元试验中,渗滤液NH3-N的降解速度较COD的降解速度快.

To verify the applicability of semi-aerobic landfill in different climate conditions, the degradation of municipal solid waste in pilot-scale semi-aerobic landfill was investigated experimentally respectively under tropical and plateau climate conditions. The experimental results show that under higher temperature and moisture conditions in Emeishan, the degradation rate of municipal solid waste is fast. The concentration of COD （chemical oxygen demand ） in the Emeishan experimental unit meets the first effluent standard of leachate after 419 d from the beginning of experiment, while it is 733 d to reach the same standard to the Qinghai -Tibet plateau. Furthermore, the degradation rate of ammonia nitrogen is faster than that of COD in the semi-aerobic landfill.