Tiger Toilet

Product Description

The Tiger Toilet sanitation technology consists of a bathroom superstructure and a pit-biodigester employing vermifilration technology. The vermifiltration technology uses earthworms to decompose the waste from latrines rapidly into vermi-compost, while liquids drain out of the system. The Tiger Toilet is currently being developed and sold by EaSol Pvt Ltd.

Target Users (Target Impact Group)

Distributors / Implementing Organizations

The original designer, Bear Valley Ventures, partnered with local organizations to distribute and install Tiger Toilets across India, including PriMove, Tata Foundation, and LIGGT. Currently the technology is developed and sold by EaSol Pvt Ltd.

Design Specifications

The Tiger Toilet system was designed to counter the problem of latrine filling through vermifiltration. This passive process degrades and recycles waste by integrating composting worms, bedding materials, and a drainage layer into a pit latrine. In this design, vermifiltration has resulted in 100% degredation of faecal solids, leaving 15% of the waste weight remaining in the pit in the form of vermi-compost. The optimal design produced with the Tiger Toilet results in an average COD removal of 87% and a 99% reduction in pathogens.

Technical Support

Provided by the manufacturer.

Replacement Components

Replacement components for the toilet superstructure can be sourced locally. The biodigester pit does not include any moving parts thus minimizing the need for replacement components.

Lifecycle

The pit of a Tiger Toilet can operate for five years without requiring emptying.

Manufacturer Specified Performance Parameters

The tiger toilet aims to reduce construction cost, eliminate energy input required for the self-regulating digestion ecosystem, and provide safer user operation because the handling of sludge is not required. There is less maintenance than traditional pit latrine, and no need to connect to a central sewer system.

Vetted Performance Status

The technology utilized in this product was shown to be feasible and that the presence of worms increased the faecal reduction rate. Testing by Bear Valley Ventures has found that the worm-based digester can allow for household-scale pits to operate for five years without needing to be emptied because worms reduce solids by over 80%.

Safety

The Tiger Toilet system was designed to enable the safe removal of vermi-compost and to prevent the handling of undigested waste by humans. To ensure safety, users must be instructed to not handle the undigested waste immediately after it is deposited into the pit.

Complementary Technical Systems

The Tiger Toilet is mainly sold as both the toilet superstructure and the biodigester; however the vermifitration biodigester technology can be purchased independently and coupled with existing toilet technology and superstructures.