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Aerobic Digestion - an Introduction

Wet Organic Waste – Compost

Aerobic Digestion as a method for dealing with food waste has rocketed in certain countries. Aerobic Digestion (AD) is creating a buzz in the waste sector as one of the most efficient systems of dealing with biowaste. Aerobic Digester is well recognized as being the closet method we have to complete solution for Organic waste at source.Aerobic Digester
Based on the quantity of waste the Anaerobic / aerobic conversion to manure, for converting to manure, we would only need to ensure air availability. The food waste has to be maintained at a not too dry or too wet  state.  It is possible to do this without power or continuous labour involvement.

Benefits of Aerobic Digestion

Clearly the idea of landfill as a method of dealing with organic waste issue is dated and not sustainable. Composting, has been the more traditional method for biowaste

  • No power required.
  • Minimal area required within the premises.
  • Requires garden waste  - So, the shredded leaves within the complex can also be used and not wasted
  • No Continuous Labor required.
  • The size of the Aerobic Digester depends on the quantity of  organic waste generated. Hence, minimal area required.
  • Extremely cost effective in setting up the Aerobic Digester.
  • Mini Aerobic Digesters can be setup at individual houses.

Disadvantages of Aerobic Digester Process

  • Compost is not prepared Immediately – takes close to about 8 weeks
  • Manual Process
  • Not all apartments have a Waste Segregation area, hence managing at Apartment is a challenge.

Things to Keep in Mind

  • Sufficient air is required for the digester to work effectively.
  • The Organic waste should not be too Dry / Wet. (The Garden waste added will manage this).
  • Mini Aerobic Digesters can be setup at individual houses.
  • Segregation to be at 95-98%


  • The digester needs to be placed at a well aerated place and under a roof to ensure no rain water gets into the digester.
  • The Waste Management area where the digester will be placed should have access to water in order to keep the surrounding clean.
  • Only Wet Kitchen waste and Browns to be added to the digester. No Dry or Rejects.
  • The kitchen waste must be mixed with cocopeat to reduce the moisture levels and we need to keep the area clean and dry as much as possible. This will help reduce the odour. To further reduce insects and flies and smell, we can use neem oil.
  • There are cocopeat that are embedded with microbes to help reduce odour and also speed up decomposition.