摘要

家庭灰尘，个人护理产品和其他因素中含有的微塑料被排放到污水处理设施（STF）中。虽然这些微塑料在STF中通过沉降，沉淀，过滤和其它处理以高处理效率进行处理，但考虑到大量的流出物，大量的微塑料仍然排放到海洋环境中。在该研究中，研究了使用厌氧 - 缺氧 - 好氧（A2O），序批式反应器（SBR）和培养基过程的生物STF，以确认这些处理的效率以及每个过程释放的相关量的微塑料。发现三个研究过程的处理效率约为98％或更高。然而，由于大量的污水，每个设施每年释放超过40亿块微塑料。因此，即使生物STF显示出高处理效率，仍然将大量的微塑料仍释放到海洋环境中。

Microplastics that are contained in household dust, personal care products, and other factors, are discharged into sewage treatment facilities (STF). While these microplastics are treated at the STF with a high treatment efficiency through settling, precipitation, filtering, and other treatments, considering the large amount of effluent, large quantities of microplastics are still discharged into marine environments. In this study, biological STF using the anaerobic-anoxic-aerobic (A2O), sequence batch reactor (SBR), and the Media processes were investigated to confirm the efficiency of these treatments and the associated amounts of microplastics released for each process. The three investigated processes were found to have treatment efficiencies of about 98% or more. However, due to the large amount of effluent, more than four billion pieces of microplastic were released each year in each facility. Thus, even though biological STF show high treatment efficiencies, substantially large amounts of microplastics are still released into the marine environment.

https://www.ncbi.nlm.nih.gov/pubmed/30503414