NATIONAL GREEN TRIBUNAL
1. Context
A Delhi Pollution Control Committee (DPCC) report on water quality at eight points of the Yamuna in Delhi based on samples collected on August 3 indicates the presence of dissolved oxygen at all eight points, but less than the desired levels.
2. What is National Green Tribunal (NGT)?
- The National Green Tribunal (NGT) is a specialized judicial body established in India to handle cases related to environmental protection and conservation.
- It was established under the National Green Tribunal Act, of 2010, and its primary objective is to effectively and expeditiously address environmental disputes and promote sustainable development.
-
With the establishment of the NGT, India became the third country in the world to set up a specialized environmental tribunal, only after Australia and New Zealand, and the first developing country to do so.
-
NGT is mandated to make disposal of applications or appeals finally within 6 months of the filing of the same.
-
The NGT has five places of sittings, New Delhi is the Principal place of sitting, and Bhopal, Pune, Kolkata and Chennai are the other four.
3. Structure of the National Green Tribunal (NGT)
- Chairperson: The NGT is headed by a full-time Chairperson who is a retired judge of the Supreme Court of India. The Chairperson is responsible for the overall administration and functioning of the tribunal.
- Judicial Members: The NGT consists of judicial members who are retired judges of either the Supreme Court or a High Court. These members have extensive legal knowledge and experience in handling environmental matters.
- Expert Members: The tribunal also includes expert members who possess expertise in areas such as environmental science, ecology, hydrology, and forestry. These members provide valuable technical insights and guidance in the resolution of environmental disputes.
- The NGT is organized into multiple benches located across different regions of India. These benches are responsible for hearing cases specific to their respective jurisdictions. Each bench is headed by a judicial member and consists of one or more expert members, as required.
4. What are the Important Landmark Judgements of NGT?
The National Green Tribunal (NGT) has delivered several landmark judgments that have had a significant impact on environmental protection and conservation in India. Here are some of the important landmark judgments delivered by the NGT:
- Vardhaman Kaushik v. Union of India (2013): This case dealt with the issue of groundwater depletion due to illegal extraction by industries in Uttar Pradesh. The NGT directed the closure of industries that were extracting groundwater without proper permissions and ordered the payment of compensation for environmental damage caused.
- Alembic Pharmaceuticals Ltd. v. Rohit Prajapati & Ors. (2014): In this case, the NGT ordered the closure of an industrial unit in Gujarat for releasing untreated effluents into a water body, causing pollution and harm to the environment and public health.
- M.C. Mehta v. Union of India (2014): The NGT issued a landmark judgment in this case regarding the pollution of the Yamuna River. It directed several measures to clean and rejuvenate the river, including the establishment of sewage treatment plants and the regulation of industries contributing to pollution.
- Subhash Chandra Sharma v. Union of India (2015): This case focused on the issue of air pollution caused by solid waste burning in open areas. The NGT imposed a ban on burning waste in open spaces and directed municipal authorities to take measures to manage waste effectively.
- Raghu Nath Sharma v. State of Himachal Pradesh (2016): The NGT ordered the closure of illegal hotels and structures in the eco-sensitive Rohtang Pass area of Himachal Pradesh to protect the fragile Himalayan ecosystem.
- Yamuna Muktikaran Abhiyan v. Union of India (2017): This case dealt with the rejuvenation of the Yamuna River and led to the NGT issuing directions to clean and restore the river, including measures to prevent encroachments and pollution.
- M.C. Mehta v. Union of India (2017): The NGT banned the use of disposable plastic in Delhi and the National Capital Region (NCR) and directed authorities to take steps to prevent the use and sale of such plastic.
- Shailesh Singh v. Hotel Holiday Regency (2019): In this case, the NGT imposed heavy fines on a hotel in Shimla, Himachal Pradesh, for causing air pollution by running diesel generators without proper emission control measures.
- Subhash Chandran vs. Tamil Nadu Pollution Control Board (2020): This judgment highlighted the importance of safeguarding coastal areas and wetlands from unauthorized construction and development activities, emphasizing the need for stringent environmental norms.
- In Re: Report by Comptroller and Auditor General of India (2021): The NGT directed the formulation of guidelines for the regulation of groundwater extraction and management to prevent overexploitation and depletion.
5. What is a dissolved oxygen level?
- Dissolved oxygen (DO) level refers to the concentration of oxygen gas (O2) that is dissolved in a liquid, typically water.
- It is a crucial parameter in aquatic ecosystems as it directly affects the survival and well-being of aquatic organisms.
- In natural water bodies like lakes, rivers, and oceans, oxygen dissolves from the atmosphere through processes such as diffusion and aeration.
- Aquatic plants, algae, and phytoplankton also contribute to the production of oxygen through photosynthesis. However, the level of dissolved oxygen can fluctuate based on various factors, including temperature, altitude, water flow, pollution, and organic matter decomposition.
- Dissolved oxygen is essential for aquatic organisms because they rely on it for their respiration process, similar to how animals breathe oxygen from the air.
- Insufficient levels of dissolved oxygen can lead to hypoxia, a condition where organisms are deprived of the oxygen they need to survive. This can result in stress, reduced growth, reproductive issues, and even mortality in aquatic species.
Different species of aquatic organisms have varying tolerance levels for dissolved oxygen. For example:
- Fish and other aquatic animals often require dissolved oxygen levels between 4 to 6 milligrams per liter (mg/L) to thrive.
- Some species of fish, insects, and other aquatic organisms can tolerate lower levels of dissolved oxygen, even below 2 mg/L, while others require higher concentrations.
6. What are chemical oxygen demand and biological oxygen demand?
Chemical Oxygen Demand (COD):
- COD is a measure of the amount of oxygen required to chemically oxidize and break down organic and inorganic substances present in water.
- It provides an indication of the total amount of pollutants that can be chemically oxidized by a strong oxidizing agent. COD is expressed in milligrams per liter (mg/L) of oxygen consumed.
- COD is useful in assessing the overall pollution load in a water sample, including both biodegradable and non-biodegradable substances.
- It is commonly used for industrial wastewater monitoring, as it provides a rapid estimation of the organic content and potential pollution levels. However, COD does not differentiate between different types of pollutants or indicate the potential impact on aquatic life.
Biological Oxygen Demand (BOD):
- BOD measures the amount of dissolved oxygen consumed by microorganisms (bacteria) during the biological degradation of organic matter in water.
- It is a key indicator of the level of biodegradable organic pollutants present in water. BOD is expressed in milligrams per liter (mg/L) of oxygen consumed over a specific time period, usually 5 days (BODâ‚…).
- BOD is particularly important in assessing the impact of organic pollution on aquatic ecosystems.
- High BOD levels indicate that a water body may have a significant amount of organic pollutants, which can lead to oxygen depletion as microorganisms break down the organic matter. This oxygen depletion, known as hypoxia, can harm aquatic organisms and disrupt the ecological balance of the water body.
Comparing BOD and COD:
- BOD primarily measures the biologically degradable organic matter and provides information about the potential impact on aquatic life.
- COD measures both biologically and chemically degradable pollutants, giving an indication of the overall pollution load and oxygen demand.
- BOD is a more specific and ecologically relevant parameter, but it takes longer to determine (5 days), while COD can be measured more quickly.
|
For Prelims: National Green Tribunal (NGT), National Green Tribunal Act, of 2010, Dissolved oxygen (DO), Chemical Oxygen demand (COD), and Biological Oxygen Demand (BOD).
For Mains: 1. Discuss the significance of Chemical Oxygen Demand (COD) and Biological Oxygen Demand (BOD) as critical indicators for assessing water pollution and quality. (250 Words)
|
Previous year Question1. How is the National Green Tribunal (NGT) different from the Central Pollution Control Board (CPCB)? (UPSC 2018)
1. The NGT has been established by an Act whereas the CPCB has been created by the executive order of the Government.
2. The NGT provides environmental justice and helps reduce the burden of litigation in the higher courts whereas the CPCB promotes cleanliness of streams and wells, and aims to improve the quality of air in the country.
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
Answer: B
2. The National Green Tribunal Act, 2010 was enacted in consonance with which of the following provisions of the Constitution of India? (UPSC 2012)
1. Right of a healthy environment, construed as a part of the Right to life under Article 21
2. Provision of grants for raising the level of administration in the Scheduled Areas for the welfare of Scheduled Tribes under Article 275(1)
3. Powers and functions of Gram Sabha as mentioned under Article 243(A)
Select the correct answer using the codes given below:
A. 1 only
B. 2 and 3 only
C. 1 and 3 only
D. 1, 2 and 3
Answer: A
|
Source: The Indian Express
