NDLI: Comparative evaluation of vacuum sewer and gravity sewer systems

Content Provider	Springer Nature Link
Author	Islam, M. Shafiqul
Copyright Year	2016
Abstract	Two most common types of sewer systems are gravity sewer system and pressure sewer system. In last 25 years, a relatively new wastewater collection system called vacuum system got acceptance and popularity in certain circumstances (e.g., hilly and rocky terrains, areas with high groundwater table, unstable soil condition). Due to lack of comprehensive understanding and design procedure, very limited studies on vacuum sewer have been reported in the literature. This study complied a complete design procedure for vacuum system and attempted to compare and evaluate capital and operating costs of the vacuum sewer system against gravity counterpart. From the detailed designs of two systems for same areas, the vacuum system found relatively cheaper in terms of total construction and operation costs. The excavation cost for vacuum system is around one-fourth of the excavation cost for the gravity system. However, total manhole cost in gravity system is relatively cheaper (33 %) than the total cost of the similar components in vacuum system (inspecting valves, vacuum valves, division valves and connections). Other costs, like trench filling materials cost, labor cost, dewatering and safety measure costs are also less in vacuum system compared to the similar costs for the gravity system. Total energy cost for vacuum system is around 6.5 % less compared to the total energy cost for the gravity counterpart for same time period. Overall, vacuum system is around 30 % less expensive than gravity system.
Starting Page	37
Ending Page	53
Page Count	17
File Format	PDF
ISSN	09756809
Journal	International Journal of System Assurance Engineering and Management
Volume Number	8
Issue Number	1
e-ISSN	09764348
Language	English
Publisher	Springer India
Publisher Date	2016-08-02
Publisher Place	New Delhi
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Vacuum sewer Gravity sewer Energy Cost Pump Quality Control, Reliability, Safety and Risk Engineering Economics, Organization, Logistics, Marketing
Content Type	Text
Resource Type	Article
Subject	Strategy and Management Safety, Risk, Reliability and Quality

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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