New Delhi: NTPC Vidyut Vyapar Nigam Limited (NVVN), a wholly-owned subsidiary of NTPC Limited has invited online bids on a “two-stage” bidding basis for the EPC (Engineering, Procurement and Construction) Package of 'Waste to Energy Facility' at Ramna, Varanasi. The bid commenced on June 22 and will conclude on July 27. The Varanasi Waste to Energy (WTE) facility is expected to be commissioned by September 30, 2022.
A Waste to Energy plant with a waste segregation facility of 600 TPD fresh municipal solid waste will be installed under the project. The plan will be designed in a modular fashion for assembly, testing, maintenance and replacement of individual sub-assemblies.
The complete plant will be odourless and compliant with the applicable emission norm. The plant will be surrounded by an aesthetic environment with permissible noise limits. Also, it will be undergoing an effluent and leachate treatment system to prevent the discharge of harmful substances. Further, human exposure will be limited with a fair amount of automation processes will be deployed around the plant in its operation and maintenance.
NTPC has installed a demo/pilot torrefaction plant at Dadri Stage -1 which uses agriculture residue / MSW as feedstock. This plant deploys a “torrefaction” process where MSW is heated in absence of oxygen. The plant which was commissioned in March 2020 presently produces charcoal that has a GCV in the range of 4000-5000 kcal/kg.
To promote torrefaction technology, a Green Charcoal Hackathon was launched on 1st December 2020 with a vision to create a conducive environment by reducing carbon emissions and nurture technology solutions in India.
Based on the outcome of the Green Charcoal Hackathon, the Notice Inviting Tender (NIT) of the Varanasi Waste to Energy (WTE) facility has been floated on June 22, 2021. The Waste to Energy facility will have a receiving shed/pit, a segregation facility, a sealed reactor and its auxiliaries, an emissions control system, an electrical and C&I system, civil works, a post-torrefaction or char handling facility and O&M of two years.
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