Sewerage System
Subject and UNIT: Water Supply And Wastewater Engineering: Unit IV: Planning And Design Of Sewerage System
Bacteria in the slime under flowing sewage convert sulphates in the sewage into sulphides. Sulphides in the liquid make their way to the surface of the sewage and released into the sewer atmosphere as hydrogen sulphide (H,S) gas.
Planning and Design of Sewerage System
Subject and UNIT: Water Supply And Wastewater Engineering: Unit IV: Planning And Design Of Sewerage System
Sewer appurtenances are those structures which are constructed at suitable intervals along a sewerage system, which helps in efficient operation and maintenance. These include:
Formula, Calculation, Solved Example Problems
Subject and UNIT: Water Supply And Wastewater Engineering: Unit IV: Planning And Design Of Sewerage System
Assuming that if rain falls on an impervious surface at a constant rate, the resultant runoff from the surface would be equal to the rainfall.
Advantages, Features, Requirements, Shapes, Design, Formula
Subject and UNIT: Water Supply And Wastewater Engineering: Unit IV: Planning And Design Of Sewerage System
Larger size of sewer section is required,Hydraulic performance is unsatisfactory during Dry Weather Flow (DWF).
Subject and UNIT: Water Supply And Wastewater Engineering: Unit IV: Planning And Design Of Sewerage System
A circular section gives the highest H.M.D. (Hydraulic Mean Depth) when running full (or) half full. When depth is more, velocity and discharge will be high.
Subject and UNIT: Water Supply And Wastewater Engineering: Unit IV: Planning And Design Of Sewerage System
Factors that influence flow of sewage in sewers
list with Advantages, Disadvantages
Subject and UNIT: Water Supply And Wastewater Engineering: Unit IV: Planning And Design Of Sewerage System
Sewer carries wastewater that releases gases such as H,S. This gas in contact with moisture can be converted into sulfuric acid. The 10 nogen formation of acids can lead to the corrosion of sewer pipe.
Subject and UNIT: Water Supply And Wastewater Engineering: Unit IV: Planning And Design Of Sewerage System
Theoretically speaking, the quantity of sewage (i.e., domestic sewage + industrial sewage) that is likely to enter the municipal main sewers should be equal to the quantity of water supplied to the contributing area.
Subject and UNIT: Water Supply And Wastewater Engineering: Unit IV: Planning And Design Of Sewerage System
Population equivalent is used to calculate the quantity of industrial sewage. As it is a tedious process, the industrial sewage (or) waste water is compared with the rate of generation of domestic waste water.
Subject and UNIT: Water Supply And Wastewater Engineering: Unit IV: Planning And Design Of Sewerage System
The quality of sewage can be checked and analysed by studying and testing its physical, chemical and bacteriological characteristics.
Sewerage System
Subject and UNIT: Water Supply And Wastewater Engineering: Unit IV: Planning And Design Of Sewerage System
In developing countries, waste water is directly disposed into water bodies or on land with or without proper treatment, which leads to the following issues:
Sewerage System
Subject and UNIT: Water Supply And Wastewater Engineering: Unit IV: Planning And Design Of Sewerage System
Human waste from lavatories (feces, urine, flush water); known as black water, Washing water (personal, clothes, floors, dishes, etc.), known as greywater or sullage.