Technology Details

Area of Technology:Chemical and Allied

Title of the Innovation: Accelerated Anaerobic Composting (AAC) of Organic Waste

Brief About Innovation

Accelerated Anaerobic Composting (AAC) is a method used for preparing manure from water hyacinth. As per this procedure, after removing the water hyacinth, it is dumped on the shore with a earth mover and the roots separated with stems and leaves chopped into small pieces. The pieces are then filled in composite pits. The pits are supposed to have 90% water hyacinth material, 8% dung and 2 % bioculam liquid (bacteria) for the composting procedure.

The paste-like material composted from pits is removed and dried on tarpaulins to turn into the organic soil conditioner (manure). The dried compost is then filled in bins packed and sent to a godown.At the godown, the material is pulverized into powder.

Salient Technical Features:

• Anaerobic composting of organic wastes

• No external energy required
• No oxygen requirement
• Shorter residence time of 28 days for complete compost formation
• No CO₂ or methane emissions in to the atmosphere
• Minimization of loss of carbon and nitrogen
• Feasible at ambient temperature
• Low cost

Application/Uses:

• Purification of Lakes filled with water hyacinth by conversion of water hyacinth to soil conditioner.
• Treatment of organic solid waste for the generation of soil conditioner.
• Scale operation: 250 kg/day to 50 ton/day.

Major Raw Materials to be utilized:

Organic fraction of MSW, market vegetable waste, food waste, water hyacinth, agriculture waste.

Major Plant Equipment and Machinery Required:

Composting pits (civil construction), Crusher and grinder, compost drying beds.

Technology Readiness Level: TRL-9

Techno-Economics

• Scale operation: 250 kg/day to 50 ton per day.
• Capital cost: INR 5 to 130 Lakhs.
• Cost of soil conditioner is Rs.20 to 30 in the market.
• Payback period is 3 to 4 years.

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