摘要:
以传统卫生填埋柱R2为对照,通过往生物反应器填埋柱R1内加载可渗透反应介质层1和2进行模拟试验,主要探讨了填埋柱R1垃圾渗滤液COD、总氮、氨氮及总磷的变化趋势,探索一种新型的加载介质层垃圾填埋处理方法。试验结果表明，填埋20周后, R1柱COD浓度基本维持在40 000～45 000 mg/L间,约为R2柱的20%～30%;第24周,R1柱总氮和氨氮分别为206.5 mg/L和167.3 mg/L,在16～24周内,R1总氮和氨氮分别约为R2的14.5%～17.5%和36.2%～43.6%;18周时,R1柱总磷达最大值1.704 mg/L,至第24周降为0.673 mg/L, 整个实验过程R1柱总磷约为R2的0.15%～0.56%。
Abstract:
Using traditional sanitary landfill R2 as a control, the simulative experiment of loading permeable reactive barrier 1(PRB1) and permeable reactive barrier 2 (PRB2) on the anaerobic bioreactor landfill R1 demonstrated the change tendency of COD, TN, NH+4-N and TP of leachate. Results indicated that the COD concentration of leachate in R1 was basically maintained between 40 000～45 000 mg/L after 20 weeks of incubation, approximately 20%～30% of R2. At the 24th week, TN and NH+4-N concentration of leachate in R1 were 206.5 mg/L and 167.3 mg/L, respectively, and during 16 and 24 weeks, TN and NH+4-N concentration of R1 were about 14.5%～17.5% and 36.2%～43.6%of R2, respectively. TP concentration of R1 reached a maximum (1.704 mg/L) at the 18th week, and then decreased to 0.673 mg/L at the 24th week. TP concentration of R1 was about 0.15%～0.56% of R2 in entire experiment course.
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