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Wastewater > Chemical characteristics of WW > Flashcards

Chemical characteristics of WW Flashcards

1
Q

What

A

Stage of sewage decomp, strength, extent and type of treatment req

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2
Q

how much comp

A

99.9% water rest total solids

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3
Q

forms of total solids

A
  1. Suspended solids (ss)
    2.Colloidal solids
    3.dissolved
    4.settleable
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4
Q

WHO guideline for drinking water ppm

A

1000ppm

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5
Q

what is eroding the ability of the system to revive and self-cleanse

A
  1. encroachments 2. solid waste dumping 3.reduced water flows 4.connectivity of lakes and canals
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6
Q

pH is determined by

A

pH meter (potentiometer)

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7
Q

how does pH of sewage change

A

fresh sewage is alkaline, gets acidic by production of acid by bacteria

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Wastewater (13 decks)

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