Advertisements
Advertisements
प्रश्न
Discuss about the major programs that the Ministry of Environment and Forests, Government of India, has initiated for saving major Indian rivers from pollution.
Advertisements
उत्तर
The untreated sewage is often discharged directly into rivers leading to their pollution and increase in water-borne diseases. The Ministry of Environment and Forests has initiated Ganga Action Plan and Yamuna Action Plan to save these major rivers of our country from pollution. Under these plans, it is proposed to build a large number of sewage treatment plants so that only treated sewage may be discharged into the rivers.
APPEARS IN
संबंधित प्रश्न
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?
Describe how do 'flocs' and 'activated sludge' help in Sewage Treatment.
Answer the following question.
What are ‘flocs’, formed during secondary treatment of sewage?
Answer the following question.
What are 'flocs', formed during secondary treatment of sewage?
One of the free-living anaerobic nitrogen-fixer is _________.
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 which of the following step large and small particles are removed from sewage through sequential filtration and sedimentation?
Why is aerobic degradation more important than anaerobic degradation for the treatment of large volumes of waste waters rich in organic matter. Discuss.
In what way anaerobic sludge digestion is important in sewage treatments?
Given below is the flowchart of sewage treatment. Identify A, B, C, D and E and select the correct option.
What is the major component of municipal wastewater (sewage)?
During primary sewage treatment, floating debris is separated by which physical process?
In a sewage treatment plant, grit comprising soil and small pebbles is removed during which stage and process?
Biochemical Oxygen Demand (BOD) serves as an indirect measure of which water quality parameter?
What is the primary purpose of chlorination in the tertiary treatment of wastewater?
By what percentage does the decomposition of organic matter by aerobic bacteria in aeration tanks typically lower the BOD during secondary treatment?
