Agriculture
January 24, 2024
AidGear Oasis-3 Water Purification System
Read SolutionImplemented by
AidGear
Product Description
PurAll Water Purification is an online, non-electric device, & automatic water purification device which uses chlorinated chemicals to deliver an appropriate dose of chlorine to disinfect water in small community water systems. The product is developed by Easol Pvt.Ltd in India and is commercially available. It is low cost, user-friendly, and requires low maintenance.
Target SDGs
SDG 6: Clean Water and Sanitation
SDG 3: Good Health and Well-Being
Target Users (Target Impact Group)
Community, Small and Medium-sized Enterprises, Public Sector Agencies
Distributors / Implementing Organizations
PurAll is currently being distributed through several distribution channels across India and Nepal and also is available for purchase through several e-commerce sites, for example, India mart, Amazon, and TradeIndia.
Competitive Landscape
Direct competitors include MSR/Stanford Venturi Doser, Aquatabs Flo, Dispensers for Safe Water, Lotus Water Chlorine Dosing Device, and Zimba automatic chlorine dispenser.
Regions
Africa
Countries
Canada, India, Nepal, Philippines
Manufacturing/Building Method
The manufacturing unit is based in Bhugaon, Pune, Maharashtra. Different parts of the PurAll are manufactured through vendors and then assembled at the Bhugaon factory in stock. Interview with the manufacturer
The chemical is sourced from Shikoku Corporation, Japan.
Intellectural Property Type
Patent
User Provision Model
Users can purchase PurAll solutions by either contacting the manufacturer or through their distributors spread in almost PAN India. For export purposes, users can contact the manufacturer directly or through NGOs like MedAir, Oxfam GB, and Save the Children. Interview with the manufacturer
Distributions to Date Status
As of 2015, more than 1500 units were supplied in India and abroad.
Active Chemical and concentration (%)
Chlorine, unknown concentration
Form
Liquid
Dosing method: Batch or flow-through
Flow-though
Dosing method: Automatic or manual
Automatic
Dosing quantity
1 mg/L
Contact time (min)
30
Target free disinfectant residual (mg/L)
Unknown
Bacteria reduction
Unknown
Virus reduction
Unknown
Protozoa reduction
Unknown
Heavy metals and/or arsenic reduction
Unknown
Treatment lifespan (days)
1 day
Maximum recommended influent turbidity level (NTU)
Not applicable
Design Specifications
PurAll is a low-cost and simple disinfection device designed by Easol to satisfy the chlorine demand by automatically leaving an adequate level of chlorine in the distribution system. The device is a flow-through type disinfection system that generates Hypochlorous Acid only when dissolved and disintegrated in water. It is a water purification device which contains an online chlorine CPU (Chlorine processing unit) with replaceable water purification cartridges, for continuous operation. This patented technology is chemically approved and certified to NSF/ ANSI 60 standard for drinking water. Furthermore, it is completely soluble in water and no traces are left. These filters come in 4 different model which has the same function but differ according to end Life, which indicates the time to replace the cartridge. The product also comes with a chlorine testing kit.
Product Schematics
Technical Support
The product is installed by the manufacturers or their distributors. The user can contact the distributor or manufacturer for technical support if required.
Replacement Components
PurAll cartridges contain disinfection chemical which can only be replaced through the manufacturers.
Lifecycle
The life cycle for this product varies with the individual models. Nonetheless, the life cycle ranges from 1,25,000 -3,00,000 liters of water, at 1 ppm dosage.
Manufacturer Specified Performance Parameters
The designer specified performance targets include automation, no power use, durable, portable, low-cost, and completely soluble in water with no traces left.
Vetted Performance Status
PurAll has been tested, approved, and recommended by different government organizations of India like; Empaneled by Maharashtra State Water Supply and Sanitation Department (WSSD) Tested at State Health Laboratories in Madhya Pradesh, Maharashtra, Tamil Nadu. Recommended by R. Mashelkar Technical Committee, Ministry of Drinking Water& Sanitation, Government of India.
Safety
Safety measures before installation and maintenance are mentioned on the website.
Complementary Technical Systems
Chlorine testing kit to measure dissolved chlorine and check the residual chlorine of the water.
Academic Research and References
Pickering, A.J et al., 2019, Effect of in-line drinking water chlorination at the point of collection on child diarrhea in urban Bangladesh: a double-blind, cluster-randomized controlled trial, The Lancet Global Health, 7(9), pp.e1247-e1256.
Humphrey, J.H, 2019, Reducing the user burden in WASH interventions for low-income countries, The Lancet Global Health, 7(9), pp.e1158-e1159.
Rajasingham, A et al., 2019, Evaluation of an emergency bulk chlorination project targeting drinking water vendors in cholera-affected wards of Dar es Salaam and Morogoro, Tanzania, The American journal of tropical medicine and hygiene, 100(6), pp.1335-1341.
Haas et al., 1998, Predicting disinfection performance in continuous flow systems from batch disinfection kinetics, Water science and technology, 38(6), pp.171-179.
“Contact us,” Easol.in. Available: http://www.easol.in/contact-us-info
“Hand Pump Water Chlorinator,” indiamart.com. Available: https://www.indiamart.com/proddetail/hand-pump-water-chlorinator-20962666897.html
“Purall Plastic Water Purification & Chlorination Piping System, White?: Amazon.in: Home & Kitchen,” Amazon.in. Available: https://www.amazon.in/Purall-Plastic-Purification-Chlorination-Piping/dp/B01GRQG4UU
“Netsurf Biotech,” Tradeindia.com. Available: https://www.tradeindia.com/netsurf-biotech-7741930/
“Goal 6,” Sdgs.un.org. Available: https://sdgs.un.org/goals/goal6
Gov.in. Available: https://mdws.gov.in/sites/default/files/Compendium_of_Innovative_Technologies.pdf
“Easol Pvt.Ltd,” Easol.in. Available: http://www.easol.in/pureall-introduction
“Easol Pvt.Ltd,” Easol.in. Available: http://www.easol.in/pureall-solutions
“Easol Pvt.Ltd,” Easol.in. Available: http://www.easol.in/approvals
Easol Pvt.Ltd,” Easol.in. Available: http://www.easol.in/how-pureall-works
Compliance with regulations
The chemical being used is approved and certified to NSF/ANSI 60.
Evaluation methods
PurAll has been evaluated for the chemical being used.
Other Information
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Another similar product is an in-line chlorinator that has been used in hand pumps in Bangladesh.
See the informatio here:
https://water.stanford.edu/research/water-sanitation-and-health-sustainable-service-models/chlorine-disinfection-systems-low
https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0118397
– These two things in the table are confusing: “Dosage unit per No. Liters: 1 ppm”, and ” Target Free Chlorine Residue (mg/L): 0.2″ . Does this mean that it is dosed with 1 ppm, but the expected residual is 0.2 ppm? It is weird that they are in different (though equivalent) units – ppm and mg/L.
– It seems that this is Tablet form, not “tablet or liquid”
– This is confusing: “Trichloroisocyanurate tablets which generate hypochlorous acid when dissolved (0.2)” Is that 0.2% chlorine?