Maha Metro regularly takes steps to become the most environment friendly organization in the country. Now it has successfully reduced the size of the bio-digester systems being installed at Nagpur Metro stations and other buildings without adversely affecting their capacity and efficiency.
- This new system has been approved by the Defense Research and Development Organization (DRDO), which had invented this patented technology.
- A memorandum of understanding (MoU) had been signed between DRDO and Maha Metro in July 2016 for installation of DRDO bio-digester patented technology at all metro stations, depots and other establishments.
- As these water recycling systems were consuming a lot of space at stations, Maha Metro officials decided to redesign them.
- The waste water collection tank was shifted to below the reed bed instead of the station thus freeing space at the stations.
- These changes have not affected the efficiency of the systems.
- Five redesigned bio-digesters have been successfully functioning at stations since the past few months.
- The DRDO patented technology is eco-friendly, efficient and economical for onsite treatment of human waste deploying specially designed fermentation tank (bio-digester) with active anaerobic microbial consortium which is used as seed material and reed bed system.
- The discharge from the reed bed is used for flushing and gardening purpose.
- At present total 14 bio-digesters (both original and new designs) are operational at metro stations and while installation of others is in progress.
Salient features of DRDO Bio-digester:
- Eco-friendly, cost-effective and green technology.
- Less space requirement & energy efficient.
- Less maintenance, no sludge generation & free from foul odour.
- Recycle & reuse of effluent water.
- No ground water contamination
- Viability in all geo-climatic conditions prevalent across the country.
Made in India Technology:
- This DRDO technology is an example of “Think in India and Make in India”.
- It provides a major fillip to government’s nationwide sanitation initiatives.
- Maha Metro has further improvised this technology.
- Influenced by the success of this technology in Nagpur Metro Rail Project, Maha Metro has decided to implement the bio-digester technology in all upcoming projects across Maharashtra.
Source: Nagpur Metro-Press Release
