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Knowledge
Sewage & Waste Water Management

This chapter covers the fundamental aspects of sewage and wastewater management, including the definitions and differences between domestic sewage and stormwater. Key topics include the conveyance methods for sewage flow, various types of treatment systems, and the importance of proper disposal to mitigate environmental impact. Additionally, it highlights government initiatives aimed at pollution reduction and the recycling of treated wastewater for sustainable practices.

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Sections

  • 1

    Sewage: Domestic And Storm Water

    This section covers the fundamental concepts associated with domestic sewage and storm water management, including definitions, flow variations, conveyance systems, and treatment methods.

    Learning Practice

  • 1.1

    Domestic Sewage

    Learning

  • 1.2

    Storm Water

    This section discusses stormwater as rainwater runoff and highlights its management to prevent environmental issues such as flooding and pollution.

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  • 2

    Quantity And Variations In Sewage Flow

    This section addresses the estimation of sewage quantity based on water use and the variations in sewage flow due to daily activities and seasonal changes.

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  • 3

    Conveyance Of Sewage

    This section discusses the conveyance of sewage through various types of sewer systems and their design considerations.

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  • 3.1

    Sewers

    This section explores the characteristics and management of sewage systems, including their types, designs, and maintenance.

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  • 3.1.1

    Types Of Sewers

    This section provides an overview of the different types of sewers utilized in sewage and stormwater management, along with their characteristics and design considerations.

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  • 3.1.2

    Shapes Of Sewers

    This section covers the various shapes of sewers used in sewage conveyance, discussing their importance in hydraulic design.

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  • 3.1.3

    Design Parameters Of Sewers

    This section covers the essential design parameters of sewers, focusing on hydraulic gradients, pipe diameters, flow velocities, and granular maintenance requirements for efficient sewage conveyance.

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  • 3.1.4

    Operation And Maintenance

    This section covers the essential operation and maintenance practices necessary for effective sewage management.

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  • 4

    Sewage Pumping

    Sewage pumping is essential for lifting sewage to appropriate elevations when gravity flow is not feasible due to site constraints.

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  • 5

    Sewerage And Sewer Appurtenances

    This section covers the components and functions of a sewerage system, including its appurtenances like manholes and junction chambers.

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  • 5.1

    Sewerage System

    This section covers the key components and principles of sewage and stormwater management in environmental engineering.

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  • 5.2

    Appurtenances

    This section discusses the components known as appurtenances associated with sewer systems, including their functions and importance.

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  • 6

    Design Of Sewerage Systems

    This section outlines the fundamental principles and considerations in the design of sewerage systems, emphasizing the importance of gravity flow and infrastructure adequacy.

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  • 7

    Small Bore Systems

    Small bore systems separate black water from grey water for more efficient sewage management.

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  • 8

    Storm Water: Quantification And Design

    This section discusses the quantification and design principles of stormwater management, emphasizing the importance of proper drainage systems to prevent flooding and pollution.

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  • 9

    Sewage And Sullage

    This section differentiates between sewage and sullage, addressing their implications for wastewater management.

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  • 10

    Pollution Due To Improper Sewage Disposal

    Improper sewage disposal leads to significant pollution in water bodies, causing health risks and environmental degradation.

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  • 11

    National River Cleaning Plans

    This section discusses government initiatives aimed at reducing pollution loads in rivers through comprehensive plans.

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  • 12

    Wastewater Treatment

    This section covers wastewater treatment methods including aerobic and anaerobic systems, highlighting their significance in environmental engineering.

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  • 12.1

    Aerobic Treatment Systems

    Aerobic Treatment Systems utilize oxygen for the biological oxidation of organic matter in wastewater.

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  • 12.2

    Anaerobic Treatment Systems

    Anaerobic treatment systems are processes that decompose organic matter without oxygen, producing biogas as a byproduct.

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  • 12.3

    Suspended Growth Systems

    Suspended growth systems utilize microorganisms suspended in wastewater for treatment, significantly aiding in the breakdown of organic matter.

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  • 12.4

    Attached Growth Systems

    This section explores attached growth systems in wastewater treatment, detailing how microorganisms attached to media surfaces facilitate the biological treatment process.

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  • 13

    Recycling Of Sewage

    This section discusses the practice of recycling sewage and its significance in water conservation and environmental protection.

    Learning Practice

References

Environmental Engineering – Module 2_ Sewage and W.pdf

Class Notes

Memorization

What we have learnt

  • Domestic sewage comprises w...
  • The design of sewerage syst...
  • Effective treatment process...

Revision Tests