Recirculation could improve leachate quality dramatically with lower TOC, COD, BOD, VFA, NH+4-N, SS and higher pH level which made leachate treatment easy.

• 回灌能明显改善渗滤液水质；显著降低总有机碳(TOC)、化学需氧量(COD)、生化需氧量(BOD)、挥发性脂肪酸(VFA)、氨氮(NH4+-N)和悬浮固体(SS)浓度；并提高pH值；降低渗滤液处理难度.