Water, one of earth's most valuable resources, is becoming a scarcity in many parts of the world as demand outweighs supply. Therefore, new ideas for conservation, recycling and reuse are needed. The recycling of sewage water is one of the most efficient and environmentally friendly means of increasing the water supply.
Process of Recycling Sewage Water
First, sewage water is run through a series of screens to remove large contaminants. The water then settles, allowing oils to float to the surface, whereas organic materials sink to the bottom. Next, sewage water is introduced to biological systems where microorganisms consume leftover organics. The water is then cleaned with chemicals such as chlorine.
Uses
Recycled sewage water is usually not used for drinking water. Rather, it is used for irrigating farms, golf courses and other public areas. It is also used as a coolant in power plants and in various industrial processes, such as making paper or mixing concrete.
Safety
Speaking about sewage water treatment and recycling in Australia, Dr. Megan Hargreaves states that, in her opinion, recycled water is just as safe as, or even safer than, water pumped from conventional sources, such as dams. This is because the recycled water has been run through a rigorous treatment system, whereas dam water may be polluted by run-off and other environmental contaminants.
Environmental Benefits
The use of recycled water will provide much needed water to sensitive ecosystems that are often deprived of water because of its diversion for industrial, agricultural and urban purposes. It also prevents sewer water from being discharged into the environment, and the recycled water can be used to create or improve wetlands.
Outlook
Water recycling technologies continue to advance. Recycled water provides an excellent, cost-efficient source of nonpotable (unsuitable for drinking) water. Furthermore, the city of Los Angeles announced that it will attempt to produce 4.9 billion gallons of drinkable, recycled waste water by 2019, according to the "Wall Street Journal."
Tags: sewage water, recycled water, drinking water, Recycling Sewage, Recycling Sewage Water, Sewage Water, water then