Monday, 4 August 2014

Varied technology mix approach towards water sector reforms – A case study of Sinnar Municipal Council (Maharashtra, India)

One of the key indicators of economic development is the pace of urbanization. However, with urbanization, come the challenges associated with that growth.

Sinnar, a small but rapidly growing town located near city of Pune, faced similar challenges with respect to its drinking water supply situation. With no water zones defined, undulation in the topography of the Sinnar, and other factors resulted to inequitable water Supply. The citizens were receiving water supply was restricted to 1 to 2 hr every alternate day. In order to overcome the water supply systemic inefficiency, the Municipal Council decided to take up water sector reforms under the Sujal Nirmal Abhiyan and achieve 24*7 water-supplyin the region.

ADCC Infocad was engaged in the process of driving the field level reforms. ADCC took up the following activities to help Sinnar MC achieve its goal:

Scope of Work
Figure 1: Overall Scope of Work

Key analyses done by ADCC during the project execution involved

•    Water Audit and energy audit
o    Existing water network was audited for identification of existing leaks and technical losses
o    Commercial losses were identified
o    Energy consumption for pumping operations was carried out

Existing Water Network

Contour Extraction
Figure 2: Contour Extraction
Water Network Flow
Figure 3: Existing Water Network Flow

Recommended  Water Network

Water Network
Figure 4: Recommended Water Network
•    GIS Mapping of the area under municipal limits
o    Including land base creation
o    Mapping building parcels, utilities, etc.
o    Consumer Data collection through consumer survey

GIS and Khasra Map Integration
Figure 5: GIS and Khasra Map Integration
An updated database mapped to each property polygon was created as an outcome of the overall this exercise

•    Demand Analysis using Theissen Polygon to identify the hot pockets

Theissen Polygon for Forecasted Demand Allocatio
Figure 6: Theissen Polygon for Forecasted Demand Allocatio
•    Hydraulic  Modeling including
o    Existing network mapping
o    3-D imagery
o    Network balancing
o    Alternative hydraulic modeling for periods of 15yrs, 35yrs, 45yrs

Change in Water supply via Hydraulic Modeling

Hourly Hydraulic Pattern
Figure 7: Hourly Hydraulic Pattern
Water Supply Mass Curve
Figure 8: Water Supply Mass Curve

Amongst others, some of the key achievements of the project include:
•    Shift from a unbalanced network towards a zone-wise water supply approach
•    Realignment of hydraulic network
•    Water pumping reduced from 22hr per day to 18-20hr per day


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