【摘要】 分别对城市污水和啤酒废水进行了一系列的快速土地处理模拟试验,在土柱的不同深度设有取样孔,并埋设了氧化还原电位电极。同时还开展了啤酒废水的现场小型工程(4m~2)和中型工程(80m~2)试验。重点对有机物在不同岩性、不同土壤深度以及系统的不同运行状态下的迁移和净化规律进行深入考察,据此探讨有机物在污水快速土地处理系统中的去除机制。更多还原

【Abstract】 The experiments conducted in the study in two years and a half include 9 soil columns flooded with municipal wastewater and 9 soil columns, a small sized (4m2) and a medium sized (80m2) pilot projects in situ with brewery wastewater. The main conclusions are as follows. (1) The removal seems to be the joint action of adsorption and biological activities. Adsorption plays the role of regulation and detention. Microbial action should be responsible for final degradation. (2) The adsorption ability of soil increases with the operation of the system. There are no strict limitation about CEC for the soil. But the lower the CEC, the longer the unstable state in the system. (3) Within 100 cm depth of the soil, there exists a redox alternating zone where more than 85% of organic materials are removed.更多还原