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SaniChlor

Sanichlor is an innovative, cost-effective chlorinator device that attaches to hand pumps, using a unique erosion mechanism to ensure safe drinking water for villages reliant on hand pump systems

How it works

The core mechanism involves controlled erosion, where water flow gradually erodes the tablets, releasing a measured amount of chlorine into the water. As water flows past chlorine tablets placed in a basket, it erodes them. The chlorine dose is adjusted by controlling the effective contact angle of the pills available to the flowing water. Each time water is pumped, a consistent amount of chlorine is mixed, effectively disinfecting the water in unclean buckets and eliminating harmful pathogens. The chlorinator self-regulates the chlorine dosage based on the pumping speed, with a constant-flow bypass ensuring accuracy and reliability. This automatic adjustment maintains accurate chlorine levels without manual intervention. The tablets used are the commonly available TCCA tablets, which are easily sourced. Five tablets of 20 g can last a village of 200 users for a couple of weeks before a villager needs to refill the device.

Challenges

Exceptional Quality

Finding the right tablets

Dosage adjustment within a range

Accurate dosing to the set point

Manufacturable in Madagascar
 

Accurate dosing to the set point

Integrating the chlorinator with the hand pump

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