What Are The Methods Of Sludge Disposal

Methods Of Sludge Disposal

What happens to the sludge that is produced after the wastewater passes through the sewage treatment plant? Sludge consists of human faeces and other organic matter. It also has large amounts of water and needs to be thickened so that it can be transported easily and used as compost in farmlands. There are three methods to do so.
Sludge may be incinerated, i.e., burnt into ashes.The ash is used as soil conditioner or as a construction material.

What Are The Methods Of Sludge Disposal 1
Incinerating

Sludge may be dewatered and then combined with other wastes to make fertilizers.

What Are The Methods Of Sludge Disposal 2
Dewatering

Sludge may be composted or processed to produce gases that can be used as fuel.

What Are The Methods Of Sludge Disposal 3
Solid composting