模拟生物反应器填埋场回灌渗滤液运移特性研究

摘要

By means of simulated waste columns with density,the influence of the movement of recirculated leachate in waste was studied in a way for different recirculation quantity,frequency and rate.The results showed that with the same leachate recirculation modes,the high density in waste leachate is longer than the low density in residence time.The higher density in waste leachate,the more recirculated leachate quantity,the higher recirculation frequency and the lower recirculation rate,the more favourable for improving water moisture distributing in the waste.%通过模拟实验研究了回灌量、回灌频率和回灌速率对不同填埋密度的垃圾体中回灌渗滤液的运移特性的影响.研究表明,相同回灌条件下,回灌渗滤液在高密度垃圾体中的停留时间比在低密度垃圾体中的停留时间长;垃圾压实密度越大、渗滤液回灌量越大、回灌频率越高,回灌渗滤液运移速率越慢,越有利于回灌渗滤液在垃圾体中的平均时空分布.