1. KANAD INSTITUTE OF ENGG AND MANAGEMENT, MANKAR
Continuous Assessment 1 Date
Student’s Name: Avijit Roy
Stream: Civil Engineering University Roll No: 25201322012
Semester: 5th Sem Paper Name: Environmental Engineering-II
Paper Code: CE(PC)505
Signature of the student: Signature of Invigilator
2. Sewage and Drainage
Sewage is the result of water emerging from the use by
human beings. For example, flushing toilets, bathing
water, industrial wastes, and so on. It is treated by
treatment plants where it is discharged into a public
sewer.
Purpose of Sewage
Sewers collect the wastewater from homes,
businesses, and many industries, and deliver it to
plants for treatment. Most treatment plants were built
to clean wastewater for discharge into streams or other
receiving waters, or for reuse.
4. Wastewater treatment
The removal of excess water either from the ground surface
or from the rootzone, is called drainage. Excess water may be
caused by rainfall or by using too much irrigation water, but
may also have other origins such as canal seepage or floods.
Types of Drainage system
types of drainage systems are explained based on their roles. It can
be classified mainly into 4 types-
Surface Drainage System
Subsurface Drainage System
Slope Drainage System
Downspouts and Gutter System
Purpose of Drainage system
Without proper drainage analysis, a structure runs the risk of
flooding, foundational damage, and in worst-case scenarios erosion
and even sinkholes. wastewater treatment consists of a combination
of physical, chemical, and biological processes and operations to
remove solids, organic matter and, sometimes, nutrients from
wastewater.
5. Wastewater treatment
Importance of Waste water Treatment:
Wastewater treatment is crucial in order to protect our
environment and the health of both humans and animals.
When wastewater is not treated properly, it can pollute our
water sources, damage natural habitats, and cause serious
illnesses
