🌿 Environment & EcologyMAINS · GS3.14 · GS3.9

Cow dung to Compressed Bio-Gas: MCD-NDDB tie-up aims to keep dung out of the Yamuna

In the presence of Home and Cooperation Minister Amit Shah, the Municipal Corporation of Delhi and the National Dairy Development Board signed an MoU to set up Compressed Bio-Gas (CBG) plants that convert cow dung into clean fuel — part of the drive to stop dung entering the Yamuna, raise livestock-farmers' income and boost organic farming.

What happened

For Prelims

For UPSC: A neat environment-and-circular-economy example — turning a pollutant (cow dung) into clean fuel and manure while cleaning the Yamuna. Use it for waste-to-energy (CBG/SATAT/GOBARdhan), river rejuvenation, methane mitigation, and the income-and-organic-farming co-benefits of a circular model.
What it is NOT: This is an MoU to set up CBG plants (an enabling agreement), not a completed plant or a river-cleaning guarantee. The 'no dirty water by December 2028' figure is a stated target, and cow-dung diversion is one part of a wider Yamuna clean-up effort.

For Mains

Syllabus: GS3.14 · GS3.9 · Linkage L2

Anchor
Circular waste-to-energy — converting cow dung into clean fuel and manure while reducing river pollution.
Substantiation (data)
MCD-NDDB MoU for cow-dung CBG plants in Delhi; aims to keep dung out of the Yamuna, raise farmer income and boost organic farming; target of no dirty water into the Yamuna by Dec 2028; links to GOBARdhan and SATAT.
Exemplification
CBG from dung + bio-slurry manure as a model of the circular economy; ~80 treatment plants in the Yamuna clean-up.
Problematisation
Aggregating dispersed dung, plant viability and offtake, and coordinating this within a much larger river-pollution challenge.
Way-forward
Scale CBG under SATAT/GOBARdhan, integrate with sewage treatment, and replicate the model across cities and river basins.
Position
A circular, waste-to-energy approach can align pollution control, clean energy and farmer incomes.
Deploys into: Environment — conservation/pollution + bioenergy infrastructure (GS3.14, GS3.9) · Compressed Bio-Gas, SATAT and GOBARdhan, Yamuna river rejuvenation, and the circular waste-to-energy economy.
Ministry of Home Affairs · 2026-07-15 · PRID 2284949 · PIB source ↗
Related: Environment & Ecology · this week's cards · Waste-to-energy & rivers