Energy consumption and pollutant emission in leachate treatment process in Beijing from 2009 to 2011
北京市2009—2011年垃圾渗滤液处理电能消耗特征与节能减排潜力研究

To investigate the power consumption characteristics in the municipal landfill leachate treatment in Beijing, we analyzed the present leachate treatment technologies and conducted on-site investigation. Elements of the treatment facilities in energy conservation and emission reduction can be divided into three levels, unit, process and station. The results showed that the numbers of MSW in each station were almost stable. In the same station, the power consumption of biochemistry unit was generally higher than the other 3 units. There was a good liner relationship between waste amount and leachate production in the landfill and fence digest station, and the leachate production of per ton waste in the fence digest station was higher than that in the landfill site. There also existed a good liner relationship between leachate production and power consumption in landfill and fence digest station, and the power consumption of per ton leachate is the landfill site was higher than that in the fence digest station. The potential of conservation in the municipal landfill leachate treatment process in Beijing was about 1.6594 million t·a-1 (The mean water dosage was 312200 t·a-1 in recent 3 years in Beijing municipal treatment). Fence station accounted for 89.58% potential of water saving, while landfilling accounted for 6.69%. Fence stations had the highest amount of water saving of per MSW, with the average of 0.02575 t·t-1.