Natural reduction of ammonia-N in leachate of large-scale landfill
大型垃圾填埋场渗滤水氨氮衰减规律

A large-scale testing landfill((3000×4)m3)was filled with 10800 tons of refuse.The Ammonia-N concentration of leachate was analysed every one to two weeks lasting for 3.5 years.A mathematical model was established to simulate the relationship of the Ammonia-N value and time.It was found that Ammonia-N Value would be reduced to 25mg/L after 21 years.The result indicated that it. If the current landfilling design and operating processes were modified,from discharging leachate promptly to discharging leachate after some time,so as to make Ammonia-N concentration decrease naturally to some level,the manpower and material could be economized greatly and the operating processes could be simplified.