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प्रश्न
Ganga has recently been declared the national river. Discuss the implication with respect to pollution of this river.
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उत्तर
The Ganga is the largest river in India with an extraordinary religious ‘ importance for Hindus. Situated along its banks are some of the world’s oldest inhabited cities like Varanasi and Patna. It provides water to about 40% of India’s population across 11 states, serving an estimated population of 500 million people or more, which is larger than any other river in the world.
A number of initiatives have been undertaken to clean the river but failed to deliver desired results. After getting elected, India’s Prime minister Narendra Modi affirmed to work for cleaning the river and controlling pollution. Subsequently, Namami Ganga project was announced by the Government in July 2014 budget. An estimated Rs 2,958 crores have been spent till July 2016 in various efforts to clean up the river.
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संबंधित प्रश्न
What is sewage?
Three water samples namely river water, untreated sewage water and secondary effluent discharged from a sewage treatment plant were subjected to BOD test. The samples were labelled A, B and C; but the laboratory attendant did not note which was which. The BOD values of the three samples A, B and C were recorded as 20 mg/L, 8 mg/L and 400 mg/L, respectively. Which sample of the water is most polluted? Can you assign the correct label to each, assuming the river water is relatively clean?
Answer the following question.
What are ‘flocs’, formed during secondary treatment of sewage?
Name the chamber in which the suspended objects are filtered and removed during sewage treatment?
The purpose of biological treatment of waste water is to ______.
Due to which of the following reason/s sewage water cannot be discharged directly into river?
After which of the following process effluents from anaerobic sludge digesters are released in natural water bodies?
In the process of biogas production which of the following anaerobic bacteria are used?
Small part of activated sludge is passed back into ______ and major part is pumped into large tanks called ______.
Into which of the following the sewage water is pumped after preliminary treatment?
Identify the INCORRECT statement with respect to sewage treatment.
What happens during the course of sewage decomposition?
After which of the following treatment BOD of the effluent is significantly reduced?
Which of the following is put into Anaerobic sludge disaster for further sewage treatment?
Methanogenic bacteria are not found in ______.
Name the states involved in Ganga action plan.
Discuss about the major programs that the Ministry of Environment and Forests, Government of India, has initiated for saving major Indian rivers from pollution.
Biochemical Oxygen Demand (BOD) may not be good index for pollution for water bodies receiving effluents from ______.
The aeration tank of a sewage treatment plant is not functioning properly. Explain in detail the impact of this on the treatment of sewage and BOD of the effluent.
Explain the steps involved in preliminary treatment of sewage.
