Any treatment of sewage that goes beyond the secondary or biological water treatment stage and includes the removal of nutrients such as phosphorus and nitrogen and a high percentage of suspended solids. Source: World Bank
Check Also
El primer traslado del excedente de basuras de Ibiza a Mallorca es inminente – OkDiario
... incineradora de Son Reus durante dos años ... Una vez en la isla, el convoy avanzará hasta la central de Son Reus, donde Tirme procederá a la ...
Web-Resol Tudo sobre Limpeza Urbana e Resíduos Sólidos!