What is sludge? Explain how it is treated?
Answers
Answer:
The residue that accumulates in sewage treatment plants is called sludge (or biosolids). Digested sludge is passed through a dewatering step; the dried solids are disposed of, and the water is sent back to secondary treatment. ..
Answer:
•Sludge is a semi-solid slurry that can be produced from a range of industrial processes, from water treatment, wastewater treatment or on-site sanitation systems. ... Industrial wastewater treatment plants produce solids that are also referred to as sludge.
•Digestion. Many sludges are treated using a variety of digestion techniques, the purpose of which is to reduce the amount of organic matter and the number of disease-causing microorganisms present in the solids. The most common treatment options include anaerobic digestion, aerobic digestion, and composting.