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Consider the following statements with reference to constructed wetlands:
1. They are engineered structures that direct wastewater through gravel beds to promote microbial activity.
2. They are constructed to convert pollutants into benign compounds through natural processes.
Which of the statements given above is/are correct?
  • a)
    1 only
  • b)
    2 only
  • c)
    Both 1 and 2
  • d)
    Neither 1 nor 2
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
Consider the following statements with reference to constructed wetlan...
Constructed wetlands emerge as a promising approach, offering not only effective treatment but also environmental and economic benefits.
  • These are engineered structures designed to replicate the functions of natural wetlands.
  • They are comprised of meticulously chosen vegetation, soil and water, orchestrated to facilitate a seamless process of purification.
  • Constructed wetlands are typically divided into two categories:
  • Subsurface flow (SSF): These wetlands direct wastewater through gravel beds or porous media, promoting microbial activity that degrades organic matter.
  • Surface flow (SF): These wetlands demonstrate their aesthetic appeal above the water’s surface, with gently flowing streams and lush vegetation. 
  • Objective: To convert pollutants into benign compounds through natural processes.
  • Unlike conventional concrete tanks, these wetlands foster biodiversity, welcoming a diverse array of life forms — ranging from microorganisms to aquatic plants and even birds — to engage in the purification process.
  • India boasts several remarkable locations where constructed wetlands are utilised for wastewater treatment. 
  • One such example is the Asola Bhatti Wildlife Sanctuary in Delhi, situated on the city’s outskirts.
  • The Kolkata East Wetlands in West Bengal, designated as a Ramsar site, feature a vast network of natural and constructed wetlands. 
  • Benefits
  • Cost-Effectiveness: In contrast to traditional treatment facilities, constructed wetlands frequently offer a more economical option for construction and upkeep. 
  • Environmental benefits: In addition to their primary role in wastewater treatment, constructed wetlands offer supplementary environmental advantages. They function as habitats for a wide array of plant and animal species, promoting biodiversity conservation.
  • Scalability and adaptability: Constructed wetlands are flexible in their scalability, able to be adjusted to fit various industrial operations and spatial limitations. 
Hence both statements are correct.
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Consider the following statements with reference to constructed wetlands:1. They are engineered structures that direct wastewater through gravel beds to promote microbial activity.2. They are constructed to convert pollutants into benign compounds through natural processes.Which of the statements given above is/are correct?a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'C'. Can you explain this answer?
Question Description
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