Question

what is sludge and how is it treated
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Answer 1

$\huge\bf \red \: \boxed{\mathfrak{ Answer\: ヅ}}$

✔️✔️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

Answer:

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.