Disposal of Sewage Effluent Notes | EduRev

Environmental Engineering

Civil Engineering (CE) : Disposal of Sewage Effluent Notes | EduRev

The document Disposal of Sewage Effluent Notes | EduRev is a part of the Civil Engineering (CE) Course Environmental Engineering.
All you need of Civil Engineering (CE) at this link: Civil Engineering (CE)

Introduction

Standards of Dilution for Discharge of Wastewaters into Rivers

  • Standards of Dilution based on Royal Commission Report
    Disposal of Sewage Effluent Notes | EduRev
  • BIS Standards for Discharge of Sewage and Industrial Effluents in Surface Water Sources and Pub
    Disposal of Sewage Effluent Notes | EduRev
  • General standards for Discharge of Environment Pollutants from effluents into Surface Water Sources, Public Sewers, and Marine Coasts Under Environment (Protection) Rules, 1986
    Disposal of Sewage Effluent Notes | EduRev

Dilution and Dispersion

Disposal of Sewage Effluent Notes | EduRev
Where,
Cs = The concentration of sewage in mg/lit.
Qs = A flow rate of sewage in m3/sec or lit/sec.
CR = The concentration of the river in mg/lit.
QR = Flow rate (discharge in m3/sec or lit/sec.
Cmix = The concentration of the mixture.

Zone of Pollution in River Stream

Disposal of Sewage Effluent Notes | EduRev
Disposal of Sewage Effluent Notes | EduRev
Saturation D.O at 20oC → 9.2 mg/lit.
Saturation D.O at 30oC → 7.6 mg/lit.
Saturation D.O at 0oC → 14.6 mg/lit.
Disposal of Sewage Effluent Notes | EduRev

ab = cd

  • Disposal of Sewage Effluent Notes | EduRev
  • Disposal of Sewage Effluent Notes | EduRev

Where,
TOD = Theoretical oxygen demand
BOD = Biological oxygen demand
COD = Chemical oxygen demand
(BOD)u = Ultimate BOD (Yu)

  • Disposal of Sewage Effluent Notes | EduRev

Stretcher-Phelps Equation

  • Disposal of Sewage Effluent Notes | EduRev
  • Disposal of Sewage Effluent Notes | EduRev
  • Disposal of Sewage Effluent Notes | EduRev
  • Disposal of Sewage Effluent Notes | EduRev
  • Disposal of Sewage Effluent Notes | EduRev
  • Disposal of Sewage Effluent Notes | EduRev

Where,
Dt = D.O deficit in mg/lit after t days.
L = Ultimate first stage BOD of the mix at a point of waste discharge in mg/lit.
Do = Initial oxygen deficit of the mix at the mixing point in mg/lit.
kR = Reoxygenation constant
kD = Deoxygenation constant
f = Self-purification constant
tC = Critical time at which minimum dissolved oxygen occurs i.e.
Disposal of Sewage Effluent Notes | EduRev
DC = Critical maximum oxygen deficit.
Disposal of Sewage Effluent Notes | EduRev
Disposal of Sewage Effluent Notes | EduRev

Disposal of Sewage Effluent Notes | EduRev

Offer running on EduRev: Apply code STAYHOME200 to get INR 200 off on our premium plan EduRev Infinity!

Related Searches

Free

,

Exam

,

Previous Year Questions with Solutions

,

Semester Notes

,

Viva Questions

,

past year papers

,

study material

,

Extra Questions

,

Summary

,

video lectures

,

Disposal of Sewage Effluent Notes | EduRev

,

pdf

,

Important questions

,

mock tests for examination

,

shortcuts and tricks

,

practice quizzes

,

Disposal of Sewage Effluent Notes | EduRev

,

ppt

,

MCQs

,

Disposal of Sewage Effluent Notes | EduRev

,

Objective type Questions

,

Sample Paper

;