Sewage in New Age

Sewage in old age was a pollution. It was a waste and irritant. But that was when there were no ideas. That was when there were no information on what to do. In this new age, sewage is recycled and converted to better things. It is no longer seen as just a waste and pollution to the environment, but as raw material for better products. Sewage is a collection of waste water and excrement conveyed in sewers. An average human consumes about 50 liters of fresh water everyday for domestic purposes such as bathing, washing, cooking, cleaning and flushing. The collection of this 'used water' is called sullage. Drinking water (potable water) is not part of this because it's put inside the body. Sullage is easier to purify than sewage. Notwithstanding, sewage has got benefits after being recycled. Sewage contains water, dissolved minerals, proteins, carbohydrates, oil and fats, coliform bacteria and total suspended solids. Sewage is treated in Sewage treatment plant by primary, secondary and tertiary stages of treatment. The impurities are removed. The bacteria and solid mass of the sewage are separated and dried up to be used as compost in a garden. The water left is treated by several filtration methods, chlorination, ozonation and/or with ultraviolet light. After all these, the clean water is ready for use, for domestic and industrial purposes. #Blessings