人工湿地污水处理系统中硫的转化过程

Sulphur Transformations in Constructed Wetlands for Wastewater Treatment

人工湿地处理废水,特别是酸性废水和含有重金属废水的应用日趋广泛.针对人工湿地中硫的迁移和转化,综述了硫在人工湿地中的硫循环,硫酸盐及硫化物生物和非生物性质的硫转化,以及植物、微生物等对硫循环的影响,并对未来的研究方向进行了展望.此外指出,对于水平潜流系统中近根环境的深入认知和研讨是一个必要的突破点.

Using constructed wetlands in wastewater treatment, especially the application of treating acidic wastewater and the wastewater with heavy metals, is becoming more and more widely. Aiming at the migration and transformation of sulphur in constructed wetlands, the paper summarizes the sulfur cycle in constructed wetlands, the abiotic and biotic sulfur transformations of sulfate and sulfide, illustrates the impacts of plants and microorganisms on the sulfur cycle, and makes a clear perspective of the future research direction. It also points out that deep acknowledge and research of rhizosphere in the horizontal subsurface flow system is an essential breakthrough.