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Rural Villages in Bankura to Receive 100% Water Supply with New Bulk Water Supply Scheme

Rural Villages in Bankura to Receive 100% Water Supply with New Bulk Water Supply Scheme
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Rural Villages in Bankura to Receive 100% Water Supply with New Bulk Water Supply Scheme - 1

CASE STUDY Bentley Advancing Infrastructure Project Summary Organization: DTK Hydronet Solutions Solution: Water, Wastewater and Stormwater Networks Location: Bankura, West Bengal, India Project Objectives: • To provide a consistent, equitable water supply to 600 habitations in the rural villages of Bankura that is safe to drink. • To increase water supply coverage in the region from 0.027 percent to 100 percent. Products Used: WaterGEMS®, HAMMER® Rural Villages in Bankura to Receive 100% Water Supply with New Bulk Water Supply Scheme Bentley Software Optimizes Design of Water Distribution Network Fast Facts • Out of 122 nations in the world, India is listed as 120th in poor water quality, equating to 1 million people per year being affected by water-borne illnesses. • The Public Health and Environmental Engineering Department (PHED) of West Bengal and the Asian Development Bank jointly funded this utility project. • The existing water network comprised concrete asbestos pipes and was completely discarded. Using Bentley software cut total project costs by 16 percent, saving INR 2 billion. Creating a hydraulic model with WaterGEMS and reviewing innumerable scenarios saved 40 percent in design costs and 80 percent in design time. Improving Water Conditions in Rural Bankura The economy of India is the sixth largest and fastest growing in the world. While urban India is undergoing consistent development, rural India continues to face immense infrastructure challenges. Sixty-five percent of Indians reside in villages, and 80 percent of these villagers solely rely on groundwater for drinking and sanitation. Out of 122 nations in the world, India is listed as 120th in poor water quality, equating to 1 million people per year being affected by waterborne illnesses. As a result, rural Indians walk 8 kilometers each day on average to fetch clean water. DTK Hydronet Solutions, an advanced water distribution and storm and sewer network modeling company, was retained by the Public Health and Environmental Engineering Department (PHED) of West Bengal and the Asian Development Bank to provide water distribution services to Bankura. Bankura is an administrative unit within the state of West Bengal, and it is inhabited by many indigenous tribal communities. Currently, these tribes are facing acute drought challenges. Surface water sources are almost dry, and the groundwater is severely contaminated with arsenic and fluoride, making it non-potable. This project covered four blocks of Bankura out of 24, spanning 600 villages and almost 1 million villagers. Water availability in this region is currently 20 liters per capita per day, and it is supplied through an existing 100-kilometer pipeline network that only supplies water for less than 45 minutes per day. Due to these constraints, approximately 90 people die annually due to water-borne diseases in Bankura. "In order to improve all these conditions, a system had to be designed that will make conjunctive use of ground and surface water, which would at least provide 70 liters per capita per day of water," said Devashri Karve, water engineering consultant at DTK Hydronet Solutions. "It should be 24/7, continuous, equitable, and sustainable, with a minimum residual height of 12 meters, dynamic pressure management system, and, most importantly, doorstep delivery of water to all the households of Bankura." Analyzing Present Conditions and Determining the Optimal Route Bankura's existing water network consisted of asbestos cement pipes that had a long history of leaks and repairs. Therefore, DTK Hydronet created a separate hydraulic model to analyze the behavior of the existing network, and the organization determined that the network is antiquated and incapable of catering to present and future water demands. Subsequently, they decided to discard the existing system in its entirety and design a new water distribution network. DTK Hydronet needed to identify the most efficient routing option that would carry the water to the four designated blocks in Bankura. The water sources identified for this project were infiltration galleries in Damodar River and Mukutmanipur Dam. DTK Hydronet chose to use two-stage pumping via a booster station to transport the water from these two sources to the four blocks. In the first stage of pumping, water is pumped from the source to ground-level reservoirs in every block. In the second stage of pumping, water will be pumped from these ground level reservoirs to their respective tanks in those blocks. While this option was not the most inexpensive, DTK Hydronet selected this solution because it was the most reliable given the large expanse of the project and area's rolling terrain. Uneven Landscape and Dispersed Homes Pose Challenges The length of the pumping main network is around 400 kilometers. Due to Bankura's undulating landscape, this network is highly prone to transient pressures. The hilly terrain ranges from 16 meters in height to 150 meters in height within a short distance. Therefore, it was a challenge to manage all pressures in the system. The mountainous topography also caused the distribution model to be susceptible to high pressures. As a result, DTK Hydronet used pressure reducing valves (PRVs) to dynamically manage these pressures.

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Rural Villages in Bankura to Receive 100% Water Supply with New Bulk Water Supply Scheme - 2

"Bentley WaterGEMS enabled 'conceptioneering' in this 4,000-kilometers-long Multi-Village Rural Water Supply's Single Hydraulic Model to benefit about1 million villagers in India. Design evaluation and analysis was efficiently done in a pareto-optimal timeframe of 25 resource days, making the project one of its kind!" - Devashri Karve, Water Engineering Consultant, DTK Hydronet Solutions Find out about Bentley at: www.bentley.com Contact Bentley 1-800-BENTLEY (1-800-236-8539) Outside the US +1 610-458-5000 Global Office Listings www.bentley.com/contact "By using this, the system would...

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