Question

sludge is colected solid waste from waste water during the treatment ​

Answer 1

Answer:

• The residue that accumulates in sewage treatment plants is called sludge (or biosolids). Sewage sludge is the solid, semisolid, or slurry residual material that is produced as a by-product of wastewater treatment processes. This residue is commonly classified as primary and secondary sludge.

Step-by-step explanation:

hope it is helpful to you follow me for morr