Sanitary Engineering (ENCE 305): Chapter 2 Quantity of Wastewater Notes 2025
Quantity of Wastewater Notes
SANITARY ENGINEERING (ENCE 305)
Chapter 2: Quantity of Wastewater
4 Hours 5 Marks

Quantity of Wastewater Notes

About this Chapter

This document contains the complete notes for Chapter 2: Quantity of Wastewater of Sanitary Engineering. Accurate estimation of wastewater quantities is fundamental for designing sewers, treatment plants, and pumping stations.

In this chapter, students will learn about dry weather flow (DWF) vs. wet weather flow, sources of sanitary sewage, factors affecting quantity, peak factor, storm water estimation using rational and empirical formulae, and design discharge for separate, combined, and partially separate systems.

Syllabus: Quantity of Wastewater

2. Quantity of Wastewater
4 hours
5 Marks

2.1 Dry weather flow and wet weather flow.

2.2 Sources of sanitary sewage: Private and public; Groundwater infiltration; Unauthorized connections.

2.3 Factors affecting the quantity of sanitary sewage: Population; Rate of water supply; Groundwater infiltration; Unauthorized connections.

2.4 Quantity estimate of sanitary sewage: Variations; Peak factor; Peak flow.

2.5 Quantity estimate of storm water: Rational and empirical formulae, time area graph and their limitations; Empirical formula for rainfall intensities.

2.6 Factors affecting the quantity of storm water.

2.7 Design discharge of wastewater for separate, combined, and partially separate systems.


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Special thanks to Madan Gorathoki Sir for providing these valuable notes.

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