Plant species to treat waste waters

Q.  Which of the following can be used for treatment of waste waters?

1) Canna indica
2) Typha
3) Water hyacinth
- Published on 21 Jun 16

a. 1, 3
b. 2, 3
c. 1, 2
d. All of the above

ANSWER: All of the above
 
  • The Water4crops project has shown remarkable success by aiding the construction of wetlands containing plant species such as Canna indica, lemon grass (Cymbopogon), napier (Pennisetum perpureum X Pennisetum americarnum), para grass (Urochloa mutica), typha (Typha latifolia), water hyacinth (Eichhornia crassipes), water lettuce (Pistia stratiotes) and a weed species Agaratum Conyzoides.
  • These plant species absorb harmful toxins as well as nutrients such as nitrogen, phosphorus, potash, inter alia, that contaminate the water due to overuse of chemical fertilizers in the agriculture sector.
  • Canna indica sps. can be used for the treatment of industrial waste waters through constructed wetlands. It is effective for the removal of high organic load, colour and chlorinated organic compounds from paper mill wastewater.

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