Phytorid Technology

Phytorid Technology

Phytorid Technology

#GS-03 Science and Technology

For Prelims

Phytorid Technology

  • Phytorid Technology is a wastewater recycling technology created to reduce the water scarcity for the next few decades.
  • It has been developed and internationally patented by CSIR-National Environmental Engineering Research Institute (NEERI).
  • Phytorid is a self sustaining technology for wastewater treatment that works on the principle of natural wetland.
  • It involves construction of a wetland exclusively designed for the treatment of municipal, urban, agricultural and industrial wastewater.
  • It uses plants such as Elephant grass (Pennisetumpurpurem), Cattails (Typha sp.), Reeds (Phragmitessp.), Cannas pp. and Yellow flag iris (Iris pseudocorus).
  • These are normally found in natural wetlands and have filtration and treatment capability.
  • Phytorid Technology for sewage treatment is a zero energy and zero operation & maintenance (O&M).
  • The Municipal Corporation of Tirupati (MCT) is building what is claimed to be the country’s largest liquid waste treatment plant using phytorid technology.

The treatment plant:

The system consists of the following three zones:

  • Inlet zone which comprises of crushed bricks and different sizes of stones.
  • Treatment zone which comprises of the same media as in inlet zone with plant species.
  • Outlet zone.

Effectiveness of the process:

The process can reduce the amount of

  • the total suspended solids (TSS) by 70% to 80.
  • Biochemical Oxygen Demand (BOD) from 78% to 84%,
  • nitrogen from 70% to 75%,
  • phosphorus from 52% to 64% and
  • fecal coliform from 90 % to 97%.

Source “Tirupati to have largest liquid waste treatment plant