For small communities, extensive wastewater treatment plants use natural lagoon methods or reed filters.
Technological development for wastewater plants is ongoing and currently focuses on the utilization of wastewater plant sludge, including the recovery of energy in the form of biogas or heat, as well as the production of fertilizers or bioplastics, and sometimes the recovery of metals extracted from them.
email:1583694102@qq.com
wang@kongjiangauto.com