The burgeoning population, coupled with slow and unorganized development in sewage infrastructure, has posed a major threat to the Delhi’s sanitation conditions, subsequent river water quality, and public health of the inhabitants. AECOM, which designs, builds, finances and operates infrastructure assets in more than 150 countries, was engaged by Delhi Jal Board to develop an integrated and sustainable master plan for 2031, along with carrying out hydraulic designs and tendering works. The $3.25-billion project covered an area of around 1,500 sq km.
AECOM used SewerGEMS provided by Bentley Systems to model the area, which included 10,000 km of a sewerage network for un-sewered areas. Performance audits were carried out for 30 existing sewage treatment plants at 17 locations. Extensive use of pre-defined queries; integration with GIS; automated load calculations, scenarios, and alternatives; and excellent representation of design and simulation outcomes enabled the study to be completed in a timely manner.
With the implementation of SewerGEMS, the Delhi Jal Bord has saved significant design time, reduced person-month inputs on the project by 1/7th and achieved payback within six months. Among the deliverables were a wastewater management information system for 2,200 un-sewered colonies. The 2031 Sewerage Master Plan will ensure that comprehensive, technically and financially viable plans are in place to improve general sanitation conditions and enhance water quality in the Yamuna River.
Speaking to the Smart Cities Council, Robert Mankiwski, Vice President – Software Development, Bentley Systems Inc, says, “The Delhi Jal Board has limited amount of data or information on the kind of pipeline, its depth etc, however, now with SewerGEMS, they can monitor all aspects of the sewerage.”
With such a huge number of pipes, network model calculations could have taken months. Using SewerGEMS’ automated design engine reduced design time. This, not only saved time, but also provided the ability to work from within various software products, including ArcGIS and AutoCAD. A central server also facilitated file sharing among offices in Hong Kong, Australia, and the United States.