Dr Amarjyoti Kashyap, an environmental scientist from Assam, is taking his patented ‘Waste Assimilator’ technology to households, institutions and communities across India from October 2, Gandhi Jayanti.

• The idea is simple: instead of sending biodegradable waste to municipal dumping sites, households can process the waste where it is generated and convert it into useful inputs for organic cultivation.
• The technology is already reportedly being used by around 12,050 households in Assam, Arunachal Pradesh and West Bengal, besides institutions such as Gauhati Commerce College.

How Does the Waste Assimilator Work?

The system is designed for source-level processing of biodegradable waste. Its important features include:

• The system uses an aeration layer that allows air movement and supports biological decomposition.
  
• A sloping bed helps the decomposing material move and facilitates collection of liquid generated during the process.
  
• An outlet allows the liquid fertiliser produced during decomposition to be collected continuously.
  
• Unlike several conventional composting methods, the technology reportedly does not require regular turning, shredding, external microbes or coco peat.
  
• It can be constructed using easily available materials. Even a discarded 20-litre paint bucket or an old water filter can reportedly be adapted for the purpose.
  

From Patent to Public Use

• The Indian Patent Office granted Patent No. 431955 for the Waste Assimilator on May 17, 2023. 
• The patent application was filed on December 29, 2014, making the process nearly nine years long.
• After securing intellectual-property protection, Kashyap has decided to share the technology without royalty, with the stated objective of encouraging wider adoption rather than treating the innovation only as a commercial product.

Why Is Waste-at-Source Important?

India generates large quantities of municipal solid waste, and biodegradable waste forms a substantial part of the waste stream.

If organic waste is separated and treated close to where it is generated, it can:

• reduce the quantity of waste transported to dumping and landfill sites;
• reduce pressure on municipal waste-processing infrastructure;
• recover nutrients for agriculture and gardening;
• encourage decentralised waste management; and
• promote behavioural change towards waste segregation and circular resource use.

Exam Hook: Key Takeaway

The Waste Assimilator highlights how low-cost technology, source segregation and decentralised processing can turn household biodegradable waste into a useful agricultural resource.

UPSC/APSC Mains Question

How can decentralised solid-waste management strengthen India’s transition towards a circular economy?

Prelims Practice Question

With reference to the ‘Waste Assimilator’ initiative, consider the following statements:

1. It focuses on processing biodegradable waste at the place where it is generated.
2. The technology has been granted a patent by the Indian Patent Office.
3. It requires the regular addition of external microbes for decomposition.

Which of the statements given above is/are correct?

1. 1 and 2 only
   B. 2 and 3 only
   C. 1 and 3 only
   D. 1, 2 and 3

Answer: A. 1 and 2 only

One-line wrap: The Waste Assimilator turns a simple household idea into a larger environmental principle: treat organic waste where it is created and return its value to the soil.