Consider the following statements about ‘Duckweed Based Wastewater Treatment technology’:

  1. The technology is mainly used for removal of phosphates and nitrogen
  2. Cold regions are not suitable for the duckweed based treatment systems
  3. The technology results in production of toxic biomass as waste product

Which of the above statements is/are correct?

Answer: [A] Only 1 & 2

Third statement is incorrect because the technology leads to biomass production, which normally does not contain toxic pollutants and can be fed to fish or to livestock, or spread on farmland as a fertilizer. It is a complete feed for fish, and due to the high content of proteins and vitamins A & C, it is also a highly nutritious feed.

This question is a part of GKToday's Integrated IAS General Studies Module