Wastewater Treatment

Where does the Treated Water go?

• The treated water is released into water bodies such as streams and rivers .

What happens to the sludge?

•Sludge is composed of human faeces and other organic matter.

• There are three methods of sludge disposal:-

1. Incinerating2. Dewatering3. Solid composting

Incerinating

• Incineration is a waste treatment process that involves the combustion of organic substances contained in waste materials.

• Incineration and other high-temperature waste treatment systems are described as "thermal treatment".

• Incineration of waste materials converts the waste into ash, flue gas, and heat.

• The ash is used as soil conditioner or as construction material.

Dewatering

• Dewatering is the removal of water from solid material or soil by wet classification, centrifugation, filtration, or similar solid-liquid separation processes, such as removal of residual liquid from a filter cake by a filter press as part of various industrial processes.

• Construction dewatering, unwatering, or water control are common terms used to describe removal or draining groundwater or surface water from a riverbed, construction site, caisson, or mine shaft, by pumping or evaporation.

• This frequently involves the use of submersible "dewatering" pumps, centrifugal ("trash") pumps, educators, or application of vacuum to well points.

Compost• Compost is organic matter that has

been decomposed and recycled as a fertilizer and soil amendment. Compost is a key ingredient in organic farming.

• At the simplest level, the process of composting simply requires making a heap of wetted organic matter (leaves, sludge) and waiting for the materials to break down into humus after a period of weeks or months.

Conclusion