Domestic Wastewater and Sludge
Domestic wastewater is harmful to the environment due to the presence of high oxygen-demanding material, nutrients, suspended solids, pathogenic organisms, organic compounds and other contaminants.
Sludge is produced in large amount in the process of wastewater treatment. Sludge is typically subject to dewatering prior to disposal. Dewatering serves the following purposes.
- Reduces volume, saving money on storage and transportation.
- Eliminates free liquids before landfill disposal.
- Reduces fuel requirements if the residuals are to be incinerated or dried.