The earth is parched. The groundwater levels are receding day by day and the efforts made by us to stop it are not enough. But before matters get out of control there is something we can do to curb the problem.
What is wastewater treatment?
You are probably familiar with the term wastewater treatment. In case you’re not, wastewater treatment is a procedure in which wastewater is purified by eliminating the impurities from it so that it can be used again for different purposes like irrigation, washing, etc. The water is treated in a facility called a Sewage Treatment Plant, where wastewater is separated from its contaminants.
Levels of water treatment
There are mainly three levels of wastewater treatment.
- At the first level, solid wastes in the water are allowed to settle. They are then separated from the water. In the case of oil and grease, they are allowed to float and are then separated.
- At the second level, the pollutants that are dissolved in the water are removed through the use of microorganisms.
- The third and last level involves further decontamination of wastewater by the use of physical methods or chemical substances.
For water conservation through wastewater treatment, you don’t always need a sewage treatment plant. You don’t need a lot of resources either to make your contribution. There are other ways to treat wastewater.
Methods of water treatment
- An aerated lagoon is an example of that. Here, water is oxidized when air is passed through it. The water is contained in an artificial lagoon.
- Another method is activated sludge, where water is aerated in an aeration tank. After that, a settling tank is used to let the sludge settle to separate it from clear and usable water.
- The third way is by using slow sand filters. 1 or 2 metres deep tanks are used to obtain drinking water through treatment. Water is made to pass through different layers of sand. The layer at the surface of the sand is the one that does most of the purification of the water. It requires no machinery or power to operate this filter.There are various other ways to treat wastewater like chemical treatment that focuses on removing chemicals from the wastewater. Biological treatments like composting, fermentation etc are used to remove organic pollutants in wastewater.
The human race generates wastewater in humongous quantities and disposes it, not realising its value in the process of water conservation. But, with some extra efforts around the globe, it can be transformed into something usable, saving thousands of litres of water. Have a look at SKF Vulcan Sewage Treatment Plant, one of the leading wastewater service providers in India.