Wastewater treatment systems are a set of integrated physical, chemical and biological operations and processes used to treat wastewater to a maximum level that allows achieving the required quality for its final use or reuse. 

Wastewater requires appropriate treatment prior to its reuse or final disposal, in order to protect the health of the population and the environment. For this reason, the aim is to propose the best set of technological operations; minimizing the use of available resources, with the lowest economic cost and the greatest environmental benefit.