| Water is, aside oxygen, a vital element for life on | | | | from the water. |
| earth. Access to clean drinking water is mandatory | | | | Sedimentation is a first stage in any wastewater |
| for life to go on as it is today. As the world's | | | | treatment plant and this method consists of allowing |
| population is increasing more and more and the water | | | | the matter in the water to settle at the bottom of |
| sources remain at the same level, timely wastewater | | | | the container before the water is passed on to other |
| treatment is of the essence so that the natural | | | | treatments. This will clear the water of any other |
| water reserves refill at a constant pace. | | | | residuals left from the treatment for disinfection. |
| Wastewater and, generally speaking, | | | | Another wastewater treatment method is filtration |
| water-treatment means destroying or removing | | | | and this process implies that the water that has |
| those elements from the water that could be harmful | | | | passed through the sedimentation stage now has to |
| to humans. The treatment processes today remove | | | | pass through a series of filtration beds. These filters |
| up to 99% of water contaminants from either | | | | withhold any leftover suspended mater in the water. |
| wastewater or raw water sources as to make sure | | | | The filtration beds are usually made out of artificial |
| that the water that enters our homes is drinkable. | | | | nets or membranes with specific thickness |
| There are several methods used for water and | | | | requirements as to provide a certain level of |
| wastewater-treatment and purification: intake filtering, | | | | cleanness to the water. |
| chemical treatment, sedimentation, filtration and | | | | As all the chemical treatments may add a specific |
| aeration. The intake filtering is the easiest yet most | | | | odor to the water one of the final methods of |
| ineffective method for water treatment and it | | | | wastewater treatment should be aeration. This is the |
| cannot provide by itself drinkable water. Intake | | | | air exposure of the water so that it returns to the |
| filtering is actually the removal of all debris from the | | | | odorless stage. Aeration, aside from oxygenation, |
| water through the use or variously sized screens | | | | means also the removal of any leftover volatile |
| before the water is collected on a wastewater | | | | organic substances or compounds. |
| treatment plant. | | | | Another more advanced wastewater treatment |
| Chemical water or wastewater treatment is basically | | | | method is reverse osmosis filtering. This sort of |
| the disinfection of such water through the use of | | | | treatment enables plants to turn ocean water into |
| different chemical compounds like chlorine, iodine or | | | | drinking water. |
| ozone. These chemicals remove all living organisms | | | | |