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利用土柱实验装置,以平顶山矿区地下水补给区内采集的新近系泥灰岩和乌江河河水作为岩样介质和入渗水样,开展模拟溶解性有机质迁移转化的室内土柱淋滤实验,分析了不同温度和渗透流速条件下溶解性有机质的迁移转化特征。结果表明:溶解性有机质在泥灰岩中主要是通过对流、弥散、吸附作用和生物降解作用等过程进行迁移转化;在一定温度范围内,温度升高时,泥灰岩对溶解性有机质的吸附作用随之减弱,生物降解作用则相应增强;渗透流速增大时,泥灰岩对溶解性有机质的吸附作用和生物降解作用均是相应减弱。
Soil column experiment was used to study the leaching experiment of indoor soil column with simulated migration of dissolved organic matter (Mud), taking the Neogene marl and Wujiang River water collected in the groundwater recharge area of Pingdingshan Mining Area as the sample and infiltration water samples The migration and transformation characteristics of dissolved organic matter under different temperature and permeate flow rate. The results show that the dissolved organic matter is mainly migrated and transformed by the process of convection, dispersion, adsorption and biodegradation in the marl. During the temperature increase, the adsorption of dissolved organic matter by the marl While the biodegradation is correspondingly enhanced. When the infiltration velocity increases, the adsorption and biodegradation of dissolved organic matter in marl are correspondingly weakened.