Abstract：The PTA wastewater discharged from a factory is selected as the research object, COD is selected as the characteristic pollution factor of PTA wastewater. Static adsorption and soil column leaching experiment of silty clay were taken place to study the adsorption、bio-degradation and dispersion coefficient of PTA wastewater. The Hydrus-1D soft was used to build the Convection-Diffusion model to demonstrate the phenomena of PTA wastewater migration, to predict the regularity of PTA wastewater migration in vadose zone. The results indicated that the silty clay in vadose zone could adsorb、degrade and impede contaminant in PTA wastewater, but the coefficient of adsorption and degradation were very low, down to 0.256cm3/g and 0.0077d-1 respectively. When COD concentration is 4000mg/L, PTA wastewater is 5m deep in the tank and vadose zone is 10m thick, COD concentration will exceed standard after 11.76 years.
王翠玲, 刘长礼, 张云, 庞雅婕. PTA生产废液在包气带中迁移的模拟研究[J]. 中国环境科学, 2014, 34(7): 1824-1830.
WANG Cui-Ling, LIU Chang-Li, ZHANG Yun, PANG Ya-Jie. Simulation study of PTA production wastewater transport in vadose zone.. CHINA ENVIRONMENTAL SCIENCECE, 2014, 34(7): 1824-1830.
