Explain why screenings on waste water treatment plants need to be removed frequently?

Question

Explain why screenings on waste water treatment plants need to be removed frequently?

Answer 1

Because they gather up everything they take out of the water, and need to be washed and sanitized or replaced.

Answer 2

Washing, dewatering and compaction of the screenings is important for several reasons:

    * Prevention of odor nuisance

    * Prevention of diseases

    * Reduction of volume, weight and disposal costs

    * Return of degradable BOD into the wastewater flow to improve denitrification processes

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Answer 3

They get clogged with objects larger than the screen size.

that's it!

Answer 4

Are you talking about the physical screens that help filter out unwanted solids in the waste water treatment plants?  It's a *MUST-DO* to maintain the efficiency of the purity of the treated water to be released back into normal clean water streams, rivers and lakes.

Answer 5

Have to go there!  s**+@ floats! Duhhh! Sorry, but that was too easy!

Answer 6

Because they screen out all the impurities in the water and eventually get clogged with everything people put down the drain . . . waste, acids, grease, etc.