Sewage Treatment
TERM PAPER
CHE-401
SEWAGE TREATMENT
CONTENTS:-
❖ Introduction
▪ What is Sewage?
▪ Why do we need Sewage Treatment?
▪ What is Sewage Treatment?
▪ What does Sewage Treatment involve?
❖ Levels of Waste Water Treatment
▪ Preliminary Treatment
▪ Primary Treatment
▪ Secondary Treatment
▪ Tertiary/ Advanced Treatment
❖ Other Process Required after Water Treatment
▪ Disinfection
▪ Sludge Treatment and Disposal
❖ References
INTRODUCTION
What is sewage?
Mains water supplied to households is used for many purposes, other than drinking and food preparation, notably bathing and showering, toilet flushing and the washing of utensils, dishes and clothes. Except where main drainage is not installed, the used water gravitates to the local sewer and becomes ‘sewage’. Sewage may include stormwater runoff. As rainfall travels over roofs and the ground, it may pick up various contaminants including soil particles and other sediment, heavy metals, organic compounds, animal waste, and oil and grease.
Why do we need to treat Sewage?
It's a matter of caring for our environment and for our own health. There are a lot of good reasons why keeping our water clean is an important priority: • Fisheries: Clean water is critical to plants and animals that live in water. This is important to the fishing industry, sport fishing enthusiasts, and future generations. • Wildlife Habitats: Our rivers and ocean waters teem with life that depends on shoreline, beaches and marshes. They are critical habitats for hundreds of species of fish and other aquatic life. Migratory water birds use the areas for resting and feeding. • Recreation and Quality of Life: Water is a great playground for us all. The scenic and recreational values of our waters are reasons many people choose to live where
CHE-401
SEWAGE TREATMENT
CONTENTS:-
❖ Introduction
▪ What is Sewage?
▪ Why do we need Sewage Treatment?
▪ What is Sewage Treatment?
▪ What does Sewage Treatment involve?
❖ Levels of Waste Water Treatment
▪ Preliminary Treatment
▪ Primary Treatment
▪ Secondary Treatment
▪ Tertiary/ Advanced Treatment
❖ Other Process Required after Water Treatment
▪ Disinfection
▪ Sludge Treatment and Disposal
❖ References
INTRODUCTION
What is sewage?
Mains water supplied to households is used for many purposes, other than drinking and food preparation, notably bathing and showering, toilet flushing and the washing of utensils, dishes and clothes. Except where main drainage is not installed, the used water gravitates to the local sewer and becomes ‘sewage’. Sewage may include stormwater runoff. As rainfall travels over roofs and the ground, it may pick up various contaminants including soil particles and other sediment, heavy metals, organic compounds, animal waste, and oil and grease.
Why do we need to treat Sewage?
It's a matter of caring for our environment and for our own health. There are a lot of good reasons why keeping our water clean is an important priority: • Fisheries: Clean water is critical to plants and animals that live in water. This is important to the fishing industry, sport fishing enthusiasts, and future generations. • Wildlife Habitats: Our rivers and ocean waters teem with life that depends on shoreline, beaches and marshes. They are critical habitats for hundreds of species of fish and other aquatic life. Migratory water birds use the areas for resting and feeding. • Recreation and Quality of Life: Water is a great playground for us all. The scenic and recreational values of our waters are reasons many people choose to live where