You must include the daily ...
Published by Jose Martinez, Director Técnico y Administrador en A-was Depuración y Tratamiento de Aguas, S.L.
You must include the daily flow in your equation.
There isn´t one answer to your problem. Each situation gives you the answer.
You must know the daily flow, the discharge limits and a complete analysis of the wastewater. With this dates, you must estimate different solutions and calculate de CAPEX and OPEX and make a decision.