1. Sewerage systems: Types and comparison. Pipes
Lecture 8
Sewerage systems: Types and comparison. Pipes

2. Definition
A set of pipe networks, facilities and technical measures, aimed at collection, transportation and treatment of the wastewater from urban, rural or industrial territories, finishing with discharge into a receiving water body.

3. Wastewater treatment plant
General scheme and basic elements of the sewer
1.Sewerage in the building
Industrial sewerage
2. Yard sewerage
Yard sewerage
3. Sewerage in the street
Wastewater treatment plant
5. Net facilities
4. Discharge pipe

4. General scheme – picture 2

5. Types of wastewater
Domestic
Industrial
Atmospheric

6. Types of the sewerage systems
Combined
Separated
Semi-separated

7. Waste water treatment plant
1. Combined (CSS)
One net for domestic, industrial and atmospheric waters
Waste water treatment plant
Sewer outflows

8. 2. Separated - SSS Net for domestic and industrial waters
Net for rainfalls
WWTP

9. 3. Semi-separated – Semi SSS
Net for domestic and industrial waters
Net for rainfalls
WWTP
Interseptor chambers

10. Interceptor chamber

11. Comparison of the 3 types
Technical and economical aspects;
Sanitary and Hygienic aspects;
Maintenance and exploitation