Due to both urban and industrialpopulation growth, the waste of precious liquid by population and climate changes increasingly the shortage of fresh water in the world is greater. Waste water treatment is a technically feasible and economically sustainable solution that allowsrecycling sewage onto adequate services.waste-water-treatment-2

Treated liquid coming from gray, residual or rain water can be used for any service that requires no drinkable clean freshone. That means, the following items are excluded: drinking, cooking, hand washing and bathing. From this list, personal hygiene is the one that consumes higher amounts of the valuable liquid and this is precisely the one what is used for its treatment and subsequent reuse (gray water).

Some of the areas where treated sewage is used are:

  • Agriculture and stockbreeding: crop and seedbed irrigation, also for livestock cleaning.
  • Parks and gardens irrigation: this is an optionthat exhausts large quantities of the fluid. Especially grass needs to be watered constantly and abundantlyin order to be able to keep itself alive plus healthy. It is consumed on golf fields, highway medians,cemeteries, green belts as well as by firefighters. It is also used in public or private ornamental fountains.
  • Commercial and domestic cleaning process: those servicesthat donot require drinkablefluid utilization. For instance we can say: car wash, street tidiness, washing machines (Laundromats orhousehold ones), air conditioner equipments and toilets are highly benefitted from this item
  • Industrial requirement: used in cooling towers, condensers, evaporators, boiler feed and in the construction area.

Reusing waste aqueous rubbish of cities is nowadays a common practiced phenomenon in most of developed countries, independently their natural hydric resource amount. Today residual fluids are considered part of hydrological cycle and anaqueous resource to be taken into account.

Reusing sewages includes not only a hydric resource better utilization but also a direct environmentalmanagementimprovement by means of avoiding aqueous contamination traveling towards oceans, lakes and rivers. Waste water treatment is an ecological and humanitarian option that allows to keep life in the Earth as it is known.