• 9964432222
  • Mail Us
  • Appointment
  • Locate Us
  • Chat Now
  • Courses
  • Login
  • Register
Manifest IAS
JournalsOfIndia
Manifest Learning Academy
  • Home
  • SNIPPETSfor Prelims
  • ARTICLESfor Mains
  • BROWSEBY SOURCE
  • DOWNLOADS
No Result
View All Result
  • Home
  • SNIPPETSfor Prelims
  • ARTICLESfor Mains
  • BROWSEBY SOURCE
  • DOWNLOADS
No Result
View All Result
JournalsOfIndia
No Result
View All Result
Home Environment

Man-made wetlands to treat wastewater

December 28, 2020
in Environment
Reading Time: 3 mins read
0
Man-made wetlands to treat wastewater
292
VIEWS
Share on WhatsAppShare on TelegramShare on Facebook
image_pdfMake PDF

In news 

In order to reduce some load of untreated sewage that flows into the Yamuna, authorities in Delhi are planning a method to naturally treat around 1,500 million litres per day (MLD) of wastewater that goes into the river.

What is the difference between Natural wetland and Man-made Wetland?

  • Natural wetlands are ecosystems that are either permanently or seasonally saturated in water, creating habitats for aquatic plants and conditions that promote the development of hydric (wetland) soils
  • A man-made wetland is an artificial wetland to treat municipal or industrial wastewater, greywater or stormwater runoff. Man-made wetlands are engineered systems that use natural functions vegetation, soil, and organisms to treat wastewater.

A new & unique experiment

  • At the South Delhi Biodiversity Park, being created by the Delhi Development Authority (DDA) on around 200 hectares of land behind Kalindi Colony, Delhi University  professor CR Babu(heads Delhi University’s Centre for Environmental Management of Degraded Ecosystems (CEMDE)) is making 11 constructed wetland systems.
  • At the South Delhi Biodiversity Park, one out of 11 constructed wetlands started functioning on December 18 this year, treating about 15 MLD of waste from the Kilokari drain.

His previous experiment 

Professor Babu successfully used the constructed wetland system to revive a lake at Neela Hauz biodiversity park in the city in 2016.

How do these wetlands will work?

The constructed wetland systems will use boulders and a variety of plants to naturally treat sewage from 25 drains, stretching from Okhla to Kalindi Colony, before it enters the river.

Methods and process of wastewater treatment

  • Methods of wastewater treatment involve a three-step process, which does not require electricity. At the mouth of the drain, a team of scientists led by Prof Babu have made a one-acre wide wetland from boulders and plants. 
  • The drain opens into an oxidation pond, which is the first step of the treatment process. Here the solid material in the waste is removed from a wire mesh and atmospheric oxygen dissolves in the water.
  • The water then travels further and passes through channels and small ridges made from boulders, which creates turbulence and causes aeration
  • Aeration brings water and air in close contact, introducing small bubbles of air which rise through the water and remove dissolved gases in it.
    • Prof Babu says “Higher turbulence means better oxygen saturation and better quality of water. Waterfalls have maximum oxygen saturation and, therefore, have very good water quality”.
  • The final step in the treatment process happens when water passes through 25 species of plants — including typha, phragmites, ipomoea and cyprus which are effective in the treatment of heavy metals, including arsenic.

Recharging the river 

After all the above steps, treated water is released into the river through wetlands stretching from Dhobi Ghat in Okhla to DND flyway near Kalindi Colony, a team headed by prof Babu will check the quality of water being released into the river through this constructed wetland.

The same process has increased the concentration of dissolved oxygen (DO) at Neela Hauz biodiversity park lake  which used to receive untreated sewage through drains from nearby areas to 4 milligrams per litre, close to the criteria for DO required for propagation of fish in the water

image_pdfMake PDF
Source: The Indian Express
Tags: Prelims

Related Posts

Ecological conservation initiatives in Union Budget 2023-24

Ecological conservation initiatives in Union Budget 2023-24

February 4, 2023
Ancient ‘marine crocodile’ fossil discovered

Ancient ‘marine crocodile’ fossil discovered

February 4, 2023
Yaya Tso lake

Yaya Tso lake

February 4, 2023
New genus of wasp named after Soligas

New genus of wasp named after Soligas

January 31, 2023
Oldest known caecilian found

Oldest known caecilian found

January 31, 2023
Swallowtail butterfly

Swallowtail butterfly

January 31, 2023
Mahabali Frog

Mahabali Frog

January 25, 2023
Nature Risk Profile

Nature Risk Profile

January 24, 2023
Liquified Natural Gas

Liquified Natural Gas

January 23, 2023
Spot Bellied Eagle Owl

Spot Bellied Eagle Owl

January 20, 2023
Please login to join discussion

Our Offline Classroom Student

CONGRATULATIONS TO 2021 TOPPERS !!!

Rank 171 Kumar Shivashish
Rank 250 Sahithya
Rank 263 Sumit Kumar Thakur
Rank 311 Deepak Ramachandra Shet
Rank 455 Ravinandan B M

February 2023
MTWTFSS
 12345
6789101112
13141516171819
20212223242526
2728 
« Jan    

Browse by Category

  • Agriculture
  • Disaster Management
  • Economy
  • Environment
  • Ethics
  • Foreign Affairs
  • Geography
  • Governance
  • History
  • Law & Policy
  • Opinion
  • People in News
  • Places in News
  • Science & Tech
  • Security
  • Society
  • Sports
  • Uncategorized

Browse by Tags

AIR All India Radio BBC Business Line Business Standard dow Down to Earth DownToEarth DTE Economic Times ET FAO Financial Express GS-1 GS-2 GS-3 GS-4 Hindustan Times IE India & the world Indian express Indiatoday India today Kurukshetra Livelihoods portal LiveMint Mains News News Paper Newspaper PIB Prelims PRS India RSTV Science Reporter Survey The Hindu The India Express The Indian Express The Print the wire Times of India TOI TOPPERS Yojana
JournalsOfIndia

Our vision is to orient the readers to grasp the facts objectively and analyse critically. In the rush of reaching first to the readers, the websites miss the balanced opinion, which is the need of the hour. We aim to reach the readers with more crispness, preciseness and relevance. We bring the articles in UPSC way for the civil services aspirants and the Wisest Way for general readers.

Categories

  • Agriculture
  • Disaster Management
  • Economy
  • Environment
  • Ethics
  • Foreign Affairs
  • Geography
  • Governance
  • History
  • Law & Policy
  • Opinion
  • People in News
  • Places in News
  • Science & Tech
  • Security
  • Society
  • Sports
  • Uncategorized

Browse by Tag

AIR All India Radio BBC Business Line Business Standard dow Down to Earth DownToEarth DTE Economic Times ET FAO Financial Express GS-1 GS-2 GS-3 GS-4 Hindustan Times IE India & the world Indian express Indiatoday India today Kurukshetra Livelihoods portal LiveMint Mains News News Paper Newspaper PIB Prelims PRS India RSTV Science Reporter Survey The Hindu The India Express The Indian Express The Print the wire Times of India TOI TOPPERS Yojana

Newsletter

The most important UPSC news and events of the day.

Get Journals daily newsletter on your inbox.

© 2020 JournalsOfIndia - A free initiative by Manifest Team.

  • Login
  • Sign Up
  • Home
  • SNIPPETS
  • ARTICLES
  • BROWSE
  • DOWNLOADS
No Result
View All Result

© 2020 JournalsOfIndia - A free initiative by Manifest Team.

Welcome Back!

Login to your account below

Forgotten Password? Sign Up

Create New Account!

Fill the forms bellow to register

All fields are required. Log In

Retrieve your password

Please enter your username or email address to reset your password.

Log In