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Bio - Toilets

Saisons Trade & Industry Pvt. Ltd. is pleased to introduce the Bio- toilet model for every house under the Swachh Bharat Scheme, a Dream project of Hon’ble Prime Minister Shri Narendra Modi. We have been installing Individual toilets India for past 3 years with the help of DRDO technology across India.

For Individualhouses and schools/hospitals, we have developed and installed different models of Bio- toilets which are supported with Bio- digester. This provides the most hygiene and clean environment. This is Possible based on technology developed by “DRDO” (Defence Research Development Organization) research lab DRDE, Gwalior and DRL, Tezpur which has developed consortia of bacteria named “inoculums” which can digest human-waste in anaerobic conditions and releases the effluent in the form ofbio-gas (Methane) and water.This is given to Banka BioLoo Pvt Ltd as Transfer of Technology who are allowed to produce inoculums otherwise it is prohibited.

The most commendable part of this research is that water coming out of the bio-tank is completely free of pathogens and if it is left into environment it rather helps than creating any kind of menace.

These tanks are smaller in size, cost effective and going to prove to be boon for the community compared to the septic-tank/sewerage/STP concept. These tanks would completely reduce the load on STP as there is no solid as well as liquid effluent coming out which is required to be sent to STP.

There are various models/designs/materials of the Bio-Tank/reed bed units and could be used by individualshouses and in schools/hospitals and rest other places.

Project Background

The technology is used to decompose biological waste generated by masses at different places (at different altitudes at different temperature).It degrades the human waste into usable water and gasses in eco-friendly manner. The waste water which can be used for irrigation purposes.

The process involves the composite of bacteria (called inoculums) to feed upon the faecal matter inside the tank, through anaerobic process which finally degrades the matter and along with the treated water.

The Bio-Digester Technology is an innovative and cost effective solution for a mega problem of water pollution and health hazards due to open defecation. The effluent coming out of the Bio-Digesters is odourless and harmless and could be used for gardening and irrigation as well.

The bio toilet are maintenance free and can be used as regular toilet which can be clean by toilet cleaning available in the market without damaging the Bio-digester. The life of Bio-digester is 25 years when used daily basis.


The support of technology developed and approved by DRDO – Ministry of Defence offers an innovative technology for disposal of human waste in eco-friendly manner. These Bio toilets can function at any atmospheric temp between -55 to 60 degree C. The bacterial consortium degrades night soil at temp as low as -55 degree C and produces colourless, odourless and inflammable bio gas containing 50 – 70% methane.

The main constituents of Bio -Toilet are Pre-fabricated above the ground shelter and Bio Digester tank. Bio digester tank is a cylindrical structure with the provision of inlet for human waste and out let for Bio gas. Temp in the bio – digester is maintained between 5-60 degree C. A person can use the toilet which is connected to the bio-digester. Night soil degradation occurs through microbial reaction which converts it into bio gas. The smell of night soil, the disease causing organisms in the night soil and the solid matter are eliminated totally. On dry weight basis 90% of the solid waste is reduced. The gaseous effluent (bio-gas) is continuously let off to the atmosphere. Liquid effluent can be drained to any surface or soak pit without any environmental hazards.


Human waste disposal in high altitude and low temp areas, Moving Railway coaches, Buses, Big Cities, Mines, remote areas, Beaches, Rural areas, long distance buses is a burning problem. The problem has further aggravated in glaciers where ambient temperature drops to - 40 degree C and lower. The low temp stops/ delays the natural bio-degradation of the waste leading to its preservation (accumulation) for long time resulting in environmental hazard. Local heating by direct sunlight exposes the waste buried in the ice causing nuisance and foul smell. The melting ice takes the waste to rivers disturbing the aquatic eco system. More over human waste is also responsible for spreading of water borne diseases like typhoid, cholera, Shigellosis, Amoebic Dysenteries, Diarrhoea etc.

  • Suitable for sub-zero temperature of Himalayan Region, Glaciers, Railway coaches, Buses, Highways, Remote areas, sea ports, Mining area, metro cities
  • Suitable for Mobile Toilet applications
  • 100% maintenance free, continuous biological process.
  • Life of inoculums is 25 year
  • Complete elimination of pathogens.
  • Economically viable.
  • No dependence on the limited and costly conventional energy sources.
  • Can be installed and made operational in 12 hours only.
  • Inoculums charging is only once during the entire life of Bio Toilet.
  • No need of connectivity to the sewage line, septic tank. No disposal of sludge is required.
  • Bio-Digester tanks in various capacities as required by customer are available with bacteria for decomposition.
  • Standard options available from 300-10000 litres