SEWAGE :
It is a dilute mixture of the wastes of various types from the residential, public and industrial places. It includes sullage water and foul discharge from the water closets, urinals, hospitals, stables ,etc.
STORM WATER :
It is the surface runoff obtained during and after the rainfall which enters sewers through inlet. Storm water is not foul as sewage and hence it can be carried in the open drains and can be disposed off in the natural rivers without any difficulty.
SANITARY SEWAGE :
It is the sewage obtained from the residential buildings & industrial effluents
establishments'. Being extremely foul it should be carried through underground conduits.
DOMESTIC SEWAGE:
It is the sewage obtained from the lavatory basins, urinals &water closets of houses, offices & institutions. It is highly foul on account of night soil and urine contained in it. Night soil starts putrefying & gives offensive smell. It may contain large amount of bacteria due to the excremental wastes of patients. This sewage requires great handling &disposal.
INDUSTRIAL SEWAGE:
It consists of spent water from industries and commercial areas. The degree of foulness depends on the nature of the industry concerned and processes involved.
SEWERS:
Sewers are underground pipes which carry the sewage to a point of disposal.
SEWERAGE:
The entire system of collecting, carrying &disposal of sewage through sewers is known as sewerage.
DRY WEATHER FLOW (DWF):
Domestic sewage and industrial sewage collectively, is called as DWF. It does not contain storm water. It indicates the normal flow during dry season.
SLUDGE:
It is the organic matter deposited in the sedimentation tank during treatment.
SEWERAGE SYSTEMS:
SEPARATE SYSTEM OF SEWAGE
COMBINED SYSTEM OF SEWAGE
PARTIALLY COMINED OR PARTIALLY SEPARATE SYSTEM
This book has been written for the ME/M.TECH/BE/B.Tech students of All University with latest syllabus for ECE, EEE, CSE, IT, Mechanical, Bio Medical, Bio Tech, BCA, MCA and All B.Sc Department Students.
The basic aim of this book is to provide a basic & best knowledge in Environmental Engineering.
Environmental Engineering Syllabus students of degree, diploma & AMIE courses and a useful reference for these preparing for competitive examinations.
All the concepts are explained in a simple, clear and complete manner to achieve progressive learning.
This book is divided into five chapters. Each chapter is well supported with the necessary illustration practical examples.
