“…Therefore, treatment systems for these smallholder facilities must be inexpensive, easy to operate and maintain. Some systems evaluated and in use to treat this type or similar agro-industrial effluents that have high pollutant loads include aerobic and anaerobic systems with different configurations (Hernandez-Fydrych et al, 2021;Galván-Arzola et al, 2022) and some ecological systems such as constructed wetlands (CWs) (Hu et al, 2020).…”