High rate transpiration system (HRTS)

High rate transpiration system (HRTS)


  • HRTS involves the use of dynamic, multicomponent soil system as a live filtration device to renovate the wastewater through adsorption, ion exchange, precipitation and stabilization of pollutants through microbial degradation
  • HRTS is a land application system wherein the wastewater is applied in especially designed field layouts with wide ridges and furrows. In ridges, trees are planted having much higher transpiration capacity, while wastewater is allowed to flow through the furrows    
  • The high transpiration capacity of plants grown on soil matrix enables the system to serve as a biopump
  • The soil system works in close conjunction with plants on it that provide a biopump through their high transpiration capacity through stomatal network. As all the wastewater is utilized in this process, the ground water pollution problem is obviated
  • In addition to this, artificial filter media and leaf fall from standing plants provide thick mat and forms a filter bed, which is responsible for retention and assimilation of colour bodies
  • Thus, the treatment and disposal of wastewater through HRTS provide cost effective and environmentally acceptable solution to manage the problem of coloured wastewaters


The high rate transpiration system for treatment and disposal of wastewater works on the following principles:

  • Transpiration of large amount of water through stomatal network
  • Waste renovation using soil as a physico-bio chemical reactor
  • Assimilation of colour in filter media



Environmental Benefits  

  • Reuse of effluent and its nutrient contents for biomass production
  • Prevention of ground and surface water pollution
  • Green belt development with concomitant advantages to the environment
  • Biomass generation and revenue returns
  • Fuel wood and timber wood production
  • Raw material for cottage industries
  • Generates sink potential for air pollutants and green house gases
  • Works on natural treatment processes and could thus be termed eco-friendly
  • Wastewater being treated: 285 m3 / day
  • Area required for land treatment design: 5-6 hectares