J Environ Manage 2021 Sep 24;301:113825. Epub 2021 Sep 24.
Universidade Federal da Fronteira Sul, 99700-000, Erechim, RS, Brazil; Universidade Estadual Do Oeste Do Paraná, 85819-110, Cascavel, PR, Brazil; Embrapa Suínos e Aves, 89715-899, Concórdia, SC, Brazil. Electronic address:
The application of the circular economy concept should utilize the cycles of nature to preserve materials, energy and nutrients for economic use. A full-scale pig farm plant was developed and validated, showing how it is possible to integrate a circular economy concept into a wastewater treatment system capable of recovering energy, nutrients and enabling water reuse. A low-cost swine wastewater treatment system consisting of several treatment modules such as solid-liquid separation, anaerobic digestion, biological nitrogen removal by nitrification/denitrification and physicochemical phosphorus removal and recovery was able to generate 1880. Read More