Activated sludge should have the ability to settle quickly so that it can-absorb pathogenic bacteria present in wastewater while sinking to the bottom of the settling tankabsorb colloidal organic matter-be discarded and anaerobically digestedbe rapidly pumped back from sedimentation tank to aeration tank

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What Is Sewage and Its Effects

Activated slu...

Question

Activated sludge should have the ability to settle quickly so that it can:

be rapidly pumped back from sedimentation tank to aeration tank

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absorb pathogenic bacteria present in wastewater while sinking to the bottom of the settling tank

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be discarded and anaerobically digested

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absorb colloidal organic matter.

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1.	Dirty water	....................
2.	Impurities in wastewater	....................
3.	The chemical process of waste water treatment plant	....................
4.	Wastewater that contains suspended impurities	....................
5.	The material that settles at the bottom of sedimentation tanks	....................
6.	Material that rises to the top in sedimentation tanks	....................

Solid matter that settles to the bottom in the sedimentation tank is ___________.

Suspended matter present in sewage which settle in settling tanks is called sludge.

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