蚯蚓在污水土地处理中的应用分析

蚯蚓是一种重要的资源,一方面为人类提供蛋白质、氨基酸等营养;另一方面作为分解者,可以用来治理或降低环境污染,保护生态环境。污水土地处理具有低建设成本、低运行成本和管理方便等特点而引起了广泛关注,但土地处理也存在占地面积比较大,氮、磷去除率不高,土壤堵塞和运行不稳定等问题。针对这些问题,文章分析了蚯蚓在污染物去除、提高植物生物量和提高土壤渗透率等方面的作用,并分析了蚯蚓在解决污水土地处理中土壤堵塞、植物退化、水力负荷比较低和占地面积比较大等问题的可行性,提出将蚯蚓引入土地处理系统能提高土地处理的效率和运行的稳定性,加快污水土地处理技术的应用。

Potential Application of Earthworm to Lang Treatment of Wastewater

Earthworm as an important resource can supply protein and amino acid for human while as a decomposer can be used to treat and improve polluted environment. Land treatment is paid much attention because of its advantages such as low construction cost, low operation cost and easy management while it has some problem including large occupation area, relative low removal efficiency, soil plug and instability operation. Due to its special functions such as treating pollutant, improving plant biomass and improving soil filter coefficient, earthworm was discussed to solve some disadvantage in land treatment system including soil plug, plant degradation, low hydraulic resident time and used large soil area. Earthworm was proposed to be introduced in land treatment to enhance removal efficiency and operation stability.