Priyanshi mishra (5)

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Dr. Harisingh gour central university sagar (M.P.)
Sewage composition and its
disposal
Inspired by - Dr. Yogesh Bhargav, (
Department of applied microbiology)
Presented by- Priyanshi mishra, Msc 2nd
semester .
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Introduction

• Sewage is the waste water of community. It
  contains human waste cloths wood , organic
  materials, paper, etc.

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Classification of sewage
Characteristics of sewage

• Biochemical oxygen demand and oxygen consumption
  (oc) values are extremely high in sewage.
• The sewage organic matter undergoes anaerobic or
  partial decomposition resulting in the production
  of obnoxious gases namely, CH3, CO, and H2S due
  to anoxic condition. Besides being toxic, these
  gases react wit water and produce acid.
• Production of acid in large quantity make the
  sewage more acidic thus making it unfit for
  supporting life activities.
• Heavy metals are generally present in abnormal
  concentration in sewage.

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Composition of sewage
Sewage is
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Sewage Disposal

• Definition - the process of removing and
  destroying or converting the noxious substances
  of sewage especially by ammonification and
  nitrification through bacterial action.
• Basic component of sewage disposal system.