摘要
用系列滤膜对老港填埋场的新鲜渗滤液、1991年垃圾产生的渗滤液进行了梯度分离 ,并研究了COD、氨氮、TS、DS、电导率和pH的变化趋势与不同孔径膜之间的关系 .结果表明 :随着系列膜孔径的减小 ,经过膜的梯度分离后 ,出水COD、氨氮、DS值逐渐减少 ,但减少的幅度并不一样 ,电导率先减小后增加 ,pH则先增加后减小 .
The colloidal particles of different sizes in fresh leachate sampled from the landfill compartment under placement operation and aged leachate sampled from the landfill compartment closed in 1991 were separated by a series of membranes of different porosity.Concentrations of COD,ammonia|N,and dissolved solid(DS),and conductivity and pH of the leachates were determined before and after gradient separation by the membrane.They were quantitatively correlated to the membrane porosity.It is found that that concentrations of COD,ammonia|N,and Ds decreased in the leachates after membrane separation and that the percentile removals depended on the measured parameters.Conductivity decreased at first and then increased,while pH increased and then decreased.
出处
《环境科学学报》
CAS
CSCD
北大核心
2004年第1期165-167,共3页
Acta Scientiae Circumstantiae
基金
国家自然科学基金项目的资助 (No .2 0 1770 14 )
