摘要
不同砂土比瓷盆试验结果表明,当砂土比为9∶9时适宜于蚯蚓生存。采用此种砂土比配制成人工土壤填充模拟土柱进行了为期6个月的试验,研究了蚯蚓对污水的净水效果及有机质的降解情况。结果表明,加入蚯蚓的土柱比对照具有更好的处理效果,它不但可提高COD、BOD5、NH4+-N、TN和TP的去除率,分别为2%～4%、2%～5%、8%～14%、3%～13%和3%～6%,而且还可以减轻人工土柱中有机质的积累和堵塞问题。
A pot experiment with different ratios of sand to soil was conducted to show that 1∶ 1 ratio of sand to soil was superior for earthworm live. And a period of 6- month experiment was conducted by using artificial soil columns filled with this mixture. The results showed that the soil columns with earthworm had higher removal rate than that of those soil column without earthworm. The <IMG SRC='IMAGE/07150060.JPG' HEIGHT=11 WIDTH=18>technique described could not only enhance the removal rates for COD, BOD5, - N, TN and TP by 2% ～ 4% , 2% ～ 5% , 8% ～ 14% , 3% ～ 13% and 3% ～ 6% , respectively, but also reduce organic matter accumulation in soil columns and its clogging problem.
出处
《农业环境科学学报》
CAS
CSCD
北大核心
2003年第3期304-307,共4页
Journal of Agro-Environment Science
基金
广东省自然科学基金项目(990721)
