Our Learning Trip about Process of Water
An innovative technique has been proposed for treating and purifying wastewater, which could spare budget-strapped municipalities some of the expense of handling the sludge that remains after treatment. Researchers say it could reduce the amount of leftover sludge by up to five tons a day for a plant that serves 100,000 people.
Normal activated sludge treatment in common use throughout the world involves the use of bacteria that help purify the water by eating harmful organic pollutants. However, this can leave behind tons of decontaminated sludge that then must be disposed of, often in landfills. Some of the "excess sludge," as it's called, is biomass waste, which is created by the growth of the pollutant-eating bacteria.
What is sludge?
Whatever you pour down the drain is accumulated in a tank (a septic tank is an example). The material that settles out is sludge. Municipal sludge comes out of private homes, hospitals, businesses and industries, and sometimes the storm drains.
Isn’t sludge treated?
Municipal sludge is typically treated by drying and adding lime before it is land applied. Larger contents are screened out and sent to a landfill. But sludge applied on farmlands may still contain objectionable things.
Originally Generated by The Mizuers.