Water shortage is the major problem that is faced all across the world.
Even though 2/3rd of the earth’s crust is made up of water but all this water is not available for drinking and for other human activities.
Most of it either locked in the form of ice or present in the form of vast saline oceans and seas.
It has been found out that 97% of the total water is salty that is unusable to human and animals (except marine animal) and the remaining three percent is available as freshwater.
More than half of this three percent is locked in glacier and less than 0.01% is available as fresh water.
The reality is water resources are less as compare to human demand for water as much of the water that can be consumed is getting polluted because of human activities.
This polluted and untreated water is causing abundant water borne diseases. We also face a huge climatic change which is further aggravating the water problem.
Some of the regions are getting more rain water than earlier and some are getting lesser.
Experts even believe that the next World War would not be for oil or land but it will be for water.
The water crisis keeps on escalating further due to improper use of water and lack of water treatment.
Major chunk of the problem can be solved if the wastewater treatment is taken very seriously and precautions at every step are taken to improve the water quality.
Wastewater treatment can be consider as a water use because it is so interconnected with the other uses of water.
Much of the water used by homes, industries, and businesses must be treated before it is released back to the environment.
Nature able to cope with small amounts of water wastes and pollution, but it would be overwhelmed if we didn’t treat the billions of gallons of wastewater and sewage produced every day before releasing it back to the environment.
Treatment plants reduce pollutants in wastewater to a level nature can handle.
If wastewater is not properly treated, then the environment and human health can be negatively impacted.
These impacts can include harm to fish and wildlife populations, oxygen depletion, beach closures and other restrictions on recreational water use, restrictions on fish and shellfish harvesting and contamination of drinking water.
The major aim of wastewater treatment is to remove as much of the suspended solids as possible before the remaining water, called effluent, is discharged back to the environment.
As solid material decays, it uses up oxygen, which is needed by the plants and animals living in the water.
In the Netherlands (a company – Rendac Son and Paques – the Dutch water technology company), they push the technology in wastewater treatment further where with the innovation the Dutch made; they manage to produce green energy out of wastewater treatment in their plant.
They use anaerobic treatment that converts organic wastes into biogas. This process combined with the ANAMMOX® process in which nitrogen is efficiently removed.
In a combined heat and power plant (CHP), the produced biogas will be converted into both electricity and heat.
The amount of electricity produced and the savings compared to the current WWTP is an equivalent of the energy consumption of approximately 3,000 households.
Source : Waste Water Asia; Severn Trent Services; Water – USGS and India Mart.com
(this article written for 1BINA.my)
- European Bank provides EUR320m funding for water, wastewater treatment initiatives (waterwastemanagement.cleantechnology-business-review.com)