【摘要】 用不同孔径的系列膜对不同季度渗滤液进行梯度分离。对分离前后渗滤液的COD、TOC、pH、TP、氨氮、正磷酸盐、色度、浊度和电导率等参数进行了测定,并建立了各参数与不同孔径膜的关系。结果表明:老港填埋场3月份渗滤液比6月份渗滤液污染性强,渗滤液的C:N:P的比分别为1168:232:1和1003:377:1,对于生物处理工艺来说,其C:N:P比例明显失调。同时发现:渗滤液的绝大部分污染物质集中于可溶性部分,而渗滤液中的P主要与大分子的悬浮物和粗胶体结合。在浊度与色度这两指标中,悬浮物和粗胶粒大约贡献一半左右。更多还原

【Abstract】 Leachate samples collected from holding tank used at Laogang landfill in March and June 2003 were gradiently separated by a series of membranes with various pore size.The parameters,such as COD,TOC,pH,TP,TN,NH3-N?orthophosphate,color,turbidity and conductivity,in the filtrates resulted from gradient filtration of leachate were determined,and the relationships between these parameters of leachate and the membrane pore sizes were quantitatively co-related.It is found that the pollutant in leachate generated in March was stronger than that in June at Laogang landfill.The ratios of C: N: P in leachate in March and June were 1168:232:1 and 1003:377:1 respectively,which seems to be unfavorable to the biological treatment process,as the total amount of N is usually beyond the appropriate ratio seriously.The dissolved fraction predominated in leachate.The P in leachate was combined with the suspended particle and the coarse colloids,which contributed about half of the colority and turbidity in leachate.更多还原