Читать книгу Plastic and Microplastic in the Environment - Группа авторов - Страница 13

MPs originate from various sources, but they are mainly sorted into primary and secondary sources. Primary MPs are produced in micro sizes, such as microbeads for personal care products and plastic resins. Secondary MPs are generated from the degradation of large plastics (Andrady 2011). Textile laundering facilities and sandblasting are other sources of MPs (Browne et al. 2011; Napper and Thompson 2016). The pollutants are washed down the drain along with wastewater and enters sewage systems, where they are too small to be removed by WWTPs and so end up in the river systems and finally in the oceans.