Tiger Bio Filter

The Tiger Bio-filter Sewage Treatment System based on patented Tiger technology uses a unique combination of filter bio media and earthworms (Eisenia fetida) to treat sludge & sewage, and recycles nearly 95% of wastewater.

The Biofilter is assembled in three stages: a sewage sump, leading to the biofilter (loaded with layers of waste treating bio-media and earthworms, where the wastewater is treated) and tertiary pressure sand and activated carbon filters. The unique set-up of the treatment plant introduces a "trickling" action of the wastewater as it passes through the bio-media, which dissolves oxygen into it. The inorganic waste in the water is removed by physical filtration. The organic waste matter is digested and metabolized by the earthworms and microorganisms.

Salient Features: 

  • Affordable - The Tiger Bio filter STP requires low cost to implement, operate and maintain
  • Water reutilization - The treated wastewater from a Tiger Bio filter STP can be used for a variety of purposes such as washing, flushing, construction, gardening etc.
  • No risk of odour or pests - No odour or pest breeding is observed in the Tiger Bio filter STP, which is common in traditional active-aeration sewage treatment
  • Better adoption to local contexts and needs
  • Easy operation and maintenance