Upgrading Rapid Gravity Filters (RGF) with glass media – Superior Drinking Water for communities


In the bustling metropolises of India, ensuring clean and safe drinking water for millions of citizens is a monumental challenge. Over the years, Indian municipalities and government facilities have adopted solutions like Rapid Gravity Filter (RGF) technology to tackle this pressing issue.

RGF technology has emerged as the frontrunner in community drinking water treatment, particularly in large Indian cities, due to the ease of operations as well as it’s capability to treat large amounts of water to a great capacity.


What is Rapid Gravity Filter Technology?

At its core, RGF is a sophisticated water treatment process that combines the principles of gravity filtration with high-speed filtration to remove impurities and contaminants from water. This method is highly efficient, cost-effective, and scalable, making it ideal for use in densely populated urban areas where clean water is in high demand.


Sand Media – At the core of RGF Technology

Traditionally, sand media has been the go-to filtration medium for water treatment plants across India. While effective to a certain extent, sand filtration has its limitations, especially in terms of filtration clarity and efficiency. Sand is cost-effective and easily available throughout the country, which makes it the go to choice as the core filtration material.

But when it comes to drinking water applications, it is of paramount importance to have the final outlet quality be of the highest standards, since it will be consumed by millions of individuals.


Achieving superior filtration efficiency – With Glass Filtration media

The advent of RGF technology has paved the way for a superior alternative: glass media filtration. Glass media filtration offers several advantages over conventional sand media filtration.

  • Firstly, it produces water of unparalleled clarity, with significantly lower outlet NTU (Nephelometric Turbidity Units) and TSS (Total Suspended Solids) loads. This means that the water treated using glass media filtration is not only cleaner but also safer for drinking purposes, meeting the stringent quality standards set by regulatory authorities.


  • Glass Filtration Media is highly capable of handling shock loads of Total Dissolved Solids (TSS), which usually occur during the monsoons due to heavy rains. The surface run-off causes the TSS loads to suddenly shoot up, which puts huge pressure on the existing filtration systems. Glass media can easily handle these shock loads and keep the plant running without interruptions.


  • Moreover, the adoption of glass media filtration translates into substantial cost savings for municipalities and government facilities. By reducing the need for coagulants and flocculants, which are traditionally used in conjunction with sand media filtration, glass media filtration minimizes chemical consumption and lowers operational expenses. This not only benefits the bottom line but also reduces the environmental footprint of water treatment operations.


  • Another significant advantage of glass media filtration is its extended lifespan and reduced backwash requirements. Unlike sand media, which needs frequent replacement and substantial backwashing to maintain efficiency, glass media can last for over 12-15 years with minimal maintenance. This not only saves on replacement costs but also conserves water and reduces energy consumption associated with backwashing processes.


  • The return on investment (ROI) for transitioning to glass media filtration is remarkably fast, making it a financially prudent choice for water treatment plants in Indian cities. The long-term cost savings, coupled with the superior water quality and operational efficiency offered by glass media filtration, make it a compelling option for modernizing drinking water treatment infrastructure across the country.


In conclusion, the widespread adoption of Rapid Gravity Filtration technology, particularly utilizing glass media, represents a significant leap forward in ensuring access to clean and safe drinking water in Indian cities.

By leveraging the unparalleled clarity, cost-effectiveness, and sustainability of glass media filtration, municipalities and government facilities can address the growing water challenges and improve the quality of life for millions of citizens.

Get in touch with us at info@purewaterent.net, to know more about our glass filtration media offerings and how we can help you achieve unparalleled levels if filtration at your facilities!