Influencing factors of zeolite in-situ remediation system to control moderately labile organic phosphorus migration and transformation in shallow water.
Abstract:To unravel the mechanism of the control and release of the endogenous moderately labile organic phosphorus (MLOP) in the lake, the factor, which influenced the migration and transformation of endogenous MLOP using in-situ zeolite capping control, was studied. The results of the laboratory simulation of in-situ zeolite controling endogenous pollutions in lakes indicate that acidic water bodies promoted endogenous MLOP migration while alkaline conditions hindered it, and the relative concentrations of endogenous MLOP in sediments, under different pH conditions, were [MLOP/TP]pH8>[MLOP/TP]pH7>[MLOP/TP]pH6; temperature significantly increased the migration level of endogenous MLOD: the content of endogenous MLOP in sediments in low-temperature water bodies was lower than that in high-temperature ones. On condition of 5 ℃, the endogenous MLOP showed the highest apparent migration, and it also presented a power function relationship with the migration over time, which could be described as [MLOP/TP]=0.2823T0.657(R2 was 0.9709); the endogenous MLOP migrated under aerobic or anaerobic conditions; the migration features and the impact performance were highly in accordance. After the migration balance, the endogenous MLOP in aerobic and anaerobic conditions displayed a linear correlation, which could be described as [MLOP/TP]aerobic=1.0884[MLOP/TP]anaerobic -0.0271(R2 was 0.99895); illumination promoted the migration of endogenous MLOP, while dark condition and zeolite particle size showed relatively low influence. The migration and transformation efficiency of endogenous MLOP controlled, in-situ, by zeolite showed to be weak.
孙士权, 蒋昌波, 赵刚, 聂小保, 谭万春, 万俊力, 余关龙. 沸石覆盖原位控制湖泊内源中等活性有机磷迁移转化[J]. 中国环境科学, 2015, 35(2): 550-557.
SUN Shi-Quan, JIANG Chang-Bo, ZHAO Gang, NIE Xiao-Bao, TAN Wan-Chun, WAN Jun-Li, YU Guan-Long. Influencing factors of zeolite in-situ remediation system to control moderately labile organic phosphorus migration and transformation in shallow water.. CHINA ENVIRONMENTAL SCIENCECE, 2015, 35(2): 550-557.