Decentralised Wastewater Treatment Systems

The decentralised wastewater treatment system is an approach which is a combination of the different systems such as the settler/ biogas settler, anaerobic baffled reactor, planted gravel filter (horizontal/ vertical) and polishing ponds. These systems are based on natural wastewater treatment techniques and are designed in accordance with different parameters such as the characteristics of wastewater, treated wastewater quality to be achieved, site and technical specifications. In these systems, both aerobic and anaerobic treatment process occurs. DWWT applications are based on four basic treatment modules:
  1. Primary treatment includes pre treatment and sedimentation in settlers or septic tanks
  2. Secondary anaerobic treatment in baffled reactors
  3. Tertiary aerobic/ anaerobic treatment in planted gravel filter beds
  4. Aerobic treatment in polishing ponds
For more details about the technology click here
Salient features:
  • Site specific and cost effective wastewater treatment systems.
  • These systems could be designed for wastewater flows from 1 cubm-1000 cubm.
  • Can treat waste water with high grease content, suspended solids and organic matter.
  • Locally available materials required for the construction.
  • Low operation and maintenance cost.
  • Can be integrated as part of the landscape.
Decentralised wastewater treatment system at Aravind Eye Hospital, Bangalore
Decentralised Wastewater Treatment System at Kachpura village in Agra
Decentralised Wastewater Treatment System at Bankers Colony as a part of Green Belt Project, Bhuj
Decentralised Wastewater Treatment at Adarsh College, Kualgaon Badlapur
Decentralised wastewater treatment system at friends of Camphill, Bangalore