# Redefining RO Technology : Sustainable & Affordable Water Filters | Niranjan Karagi | TEDxABBS

Source: https://www.youtube.com/watch?v=Kff1bGdJj0s
Recap page: https://rapidrecap.app/video/Kff1bGdJj0s
Generated: 2025-11-10T17:02:20.192+00:00

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## Quick Overview

Niranjan Karagi presents an innovation in water filtration technology that significantly reduces water wastage compared to traditional RO systems by utilizing Hollow Fiber Membranes (HFM) and a system modeled on reverse osmosis principles but dynamically adjusted based on input water quality, leading to zero water wastage and enabling clean drinking water access for communities, including military and flood-affected regions.

**Key Points:**
- The innovation uses Hollow Fiber Membranes (HFM) that allow water molecules to pass while blocking dirt particles, bacteria, viruses, and plastics.
- Traditional RO systems waste 3 liters of water for every 1 liter of pure water, whereas the new system wastes only 0.1 to 0.3 liters per liter of drinking water.
- The new system, an SRO (System Reverse Osmosis), dynamically adjusts its operation based on input water quality, eliminating the need for high-pressure pumps and significantly reducing water wastage.
- The speaker, Niranjan Karagi, an innovator and entrepreneur, has supplied over 1 Lakh+ units globally and supported defense forces and flood relief efforts in areas like Assam and Karnataka.
- The speaker demonstrated filtering highly contaminated 'roadside' water to clear, drinkable water, contrasting it with the high wastage of standard RO filters.
- The technology supports multiple applications including drinking water, agriculture, grey water recycling, and industrial wastewater treatment.

![Screenshot at 0:10: Niranjan Karagi stands on stage next to a water purification unit, preparing to deliver his presentation on innovative water filtration technology.](https://ss.rapidrecap.app/screens/Kff1bGdJj0s/00-00-10.png)

**Context:** Niranjan Karagi, an innovator and entrepreneur, delivers a TEDx talk at TEDxABBS, focusing on solving the critical global challenge of water scarcity and sanitation by introducing a new, highly efficient water filtration technology that dramatically reduces the water wastage inherent in conventional Reverse Osmosis (RO) systems.

## Detailed Analysis

Niranjan Karagi discusses the severe global issue of water contamination and the inefficiency of existing solutions, particularly Reverse Osmosis (RO) technology. He highlights that standard RO systems waste approximately 3 liters of water for every 1 liter of pure water produced, a significant environmental burden, especially in regions facing water scarcity. Karagi introduces his innovation, which uses Hollow Fiber Membranes (HFM) that are microscopically porous, allowing only water molecules to pass through while retaining dirt, bacteria, viruses, and microplastics. He contrasts the standard RO wastage ratio (1:3) with his system, which wastes only 0.1 to 0.3 liters per liter of clean water, achieving near-zero wastage. This new technology, called SRO (System Reverse Osmosis), dynamically adjusts its operation based on the input water quality, avoiding the need for energy-intensive high-pressure pumps typical of standard RO. Karagi showcased a demonstration using highly contaminated water, which the filter rendered clear and potable. He emphasizes the broad applicability of this technology across drinking water supply for communities (serving 3,000 people in one African location), agricultural use, grey water recycling, and industrial wastewater treatment. Furthermore, he notes the deployment of these filters in critical situations, such as providing clean water to defense personnel (Indian Army, CRPF) during emergencies in flood-affected regions of India like Assam and Karnataka. The core message is that this sustainable and scalable technology offers a way to achieve universal access to clean drinking water.

### The Water Crisis & Traditional RO Inefficiency

- Water scarcity and contamination remain major global challenges
- 2:14: Standard RO wastes 3 liters for 1 liter of pure water, leading to massive water wastage
- 2:40: Traditional methods for villages involve boiling or chemicals, which are often ineffective or unsustainable.

### The Innovation

- Hollow Fiber Membranes (HFM): HFM walls contain microscopic pores allowing water molecules through but blocking dirt, bacteria (up to 99.9% removal shown in diagram), viruses, and plastic particles
- 3:33: Pore size is smaller than a tennis ball but larger than a water molecule, allowing selective filtration.

### The New SRO System Advantages

- The SRO system dynamically adjusts operation based on input water quality, eliminating the need for electricity, high-pressure pumps, or frequent filter maintenance (like backwash)
- 4:59: This results in near-zero water wastage (only 0.1 to 0.3 liters wasted per liter produced).

### Real-World Impact and Scale

- Karagi's company has supplied over 1 Lakh+ units globally
- 4:36: Units provided to defense forces (CRPF, Indian Army) during emergencies and flood relief in Assam and Karnataka
- 9:07: A community water purification plant installed in Africa now provides safe water to 3,000 people.

![Screenshot at 0:05: Promotional slide for TEDxABBS event featuring speaker Niranjan Karagi, Filter Man - Innovator & Entrepreneur.](https://ss.rapidrecap.app/screens/Kff1bGdJj0s/00-00-05.png)
![Screenshot at 0:14: Slide detailing the Thorny Devil \(Moloch horridus\) as an example of nature's innovation, setting the stage for nature-inspired technology.](https://ss.rapidrecap.app/screens/Kff1bGdJj0s/00-00-14.png)
![Screenshot at 0:39: Speaker standing on stage next to the TEDxABBS backdrop, preparing to demonstrate the filtration concept.](https://ss.rapidrecap.app/screens/Kff1bGdJj0s/00-00-39.png)
![Screenshot at 0:40: Projected slide comparing standard RO filter water waste \(3 glasses waste for 1 glass pure\) versus the need for better technology.](https://ss.rapidrecap.app/screens/Kff1bGdJj0s/00-00-40.png)
![Screenshot at 1:10: Speaker discussing his background growing up in a Tier-2 city \(Belagavi\) where safe drinking water was a challenge.](https://ss.rapidrecap.app/screens/Kff1bGdJj0s/00-01-10.png)
![Screenshot at 1:19: A visual comparison slide showing a child drinking contaminated water, contrasted with images of agriculture, grey water use, and industrial wastewater treatment, illustrating the broad applications of microfiltration technology.](https://ss.rapidrecap.app/screens/Kff1bGdJj0s/00-01-19.png)
![Screenshot at 1:54: Slide detailing Hollow Fiber Membranes, showing the structure \(Single Bore vs. MaxiBore\) and stating that it removes bacteria up to 99.9%.](https://ss.rapidrecap.app/screens/Kff1bGdJj0s/00-01-54.png)
![Screenshot at 2:54: Visual comparison showing the massive water wastage of a standard RO filter \(3 bottles wasted for 1 filled\) versus the minimal waste of the new system.](https://ss.rapidrecap.app/screens/Kff1bGdJj0s/00-02-54.png)
![Screenshot at 4:03: Diagram illustrating how Hollow Fiber Membranes filter out contaminants, showing 'Before' \(bacteria/particles present\) and 'After' \(clean water\).](https://ss.rapidrecap.app/screens/Kff1bGdJj0s/00-04-03.png)
![Screenshot at 9:08: Split image showing the installation of a large-scale filtration plant in Africa alongside troops receiving water, demonstrating community and defense impact.](https://ss.rapidrecap.app/screens/Kff1bGdJj0s/00-09-08.png)