Question

what is sludge and how is it treated

Answer 1

✔️✔️what is sludge and how is it treated?




⭕️Semi-solids such as faeces that settle down during wastewater treatment are called sludge.

⭕️ sludge is removed using a scraper and then transferred to a tank where it is decomposed by anaerobic bacteria to produce biogas.

⭕️ This biogas is used as a low-cost fuel for heating, cooking, etc.

⭕️ It is also used to produce electricity.

✔️✔️what exactly happens to the sludge after the treatment is done ?

⭕️Sludge is passed through a digestion chamber where it is decomposed by anaerobic bacteria which results in liquefaction.

⭕️ After this the digested sludge is disposed by drying and then landfilling.

Answer 2

Explanation:

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. ...