ECAR: A scalable low-cost arsenic remediation technology Prof Joyashree Roy Professor of Economics, Jadavpur University (Kolkata), Coordinator, Global Change Programme at Jadavpur University Dr. Susan Amrose Project Scientist, University of California, Berkeley, Lawrence Berkeley National Lab - USA (Prof Ashok Gadgil, Team Leader) Mr. RS Rajan Managing Director, Luminous Water Technologies Pvt. Ltd Dr. Suresh Sisodia Chief of Technology, Luminous Water Technologies Pvt. Ltd 1
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Electro-Chemical Arsenic Remediation_Dr. Susan Amrose_Indovation 2015_23 January 2015
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ECAR: A scalable low-cost
arsenic remediation technology
Prof Joyashree RoyProfessor of Economics, Jadavpur University (Kolkata),
Coordinator, Global Change Programme at Jadavpur
University
Dr. Susan AmroseProject Scientist, University of California, Berkeley,
Lawrence Berkeley National Lab - USA
(Prof Ashok Gadgil, Team Leader)
Mr. RS RajanManaging Director, Luminous Water Technologies Pvt. Ltd
Dr. Suresh SisodiaChief of Technology, Luminous Water Technologies Pvt. Ltd
1
With grateful acknowledgement of support from:
The Andrew and
Virginia Rudd
Family Foundation
Arsenicosis causes painful skin lesions, lower IQ for children,
gangrene and amputation, cancers, and death (+ other effects) 3
Symptoms of arsenicosis begin in early 1990s
>95% of these failed within 1 year*! *Ph.D. Thesis, Abhijit Das, Jadavpur University, 2012
Need: a Sustainable Technology System
= Effective, Robust, Financially Viable, Locally
Affordable, Scalable, and Socially Embedded
• WaterHealth technology was also invented and developed at
the Gadgil Lab, University of California, Berkeley
• Sold water for 1 rupee for 10 Liters (in 2007)
• Affordable + Financially viable Sustainable
Andhra Pradesh, India
A promising scale-up model for this problem
is based on WaterHealth International
WaterHealth Center in Aufman village, Ghana
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ECAR was designed to fit within a
sustainable, scalable system
ECAR = Electro-Chemical Arsenic Remediation
P, Si, As sorb to
Fe-III-Oxides
Fe-II is produced,
becomes Fe-III
and precipitates
as Fe-III-Oxides
then settle out
as sludge7
Top view of dosing tank
Settling Tank
5500 liter per day ECAR reactor built in Mumbai
Dosing Tank
Dhapdhapi High School - West Bengal ECAR System
This reactor was tested at Dhapdhapi High School
(South 24 Parganas, West Bengal) 2012 – 2013
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From field operation, we know ECAR is:
Locally affordable
– consumables Rs 12 – 27/m3 (< 3 paise/L)
No regeneration, No imported adsorbent, No pH adjustment