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प्रश्न
Why do we prefer to call secondary waste water treatment as biological treatment?
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उत्तर
The secondary treatment is also called biological treatment because in secondary treatment living organisms like bacteria and fungi are used.
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संबंधित प्रश्न
Explain the role of microbes in sewage treatment.
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.
Secondary treatment of the sewage is also called Biological treatment. Justify this statement and explain the process.
Removal of large pieces of floating debris, oily substances, etc. during sewage treatment is called _______________.
In which of the following microbial digestion of organic wastes of sewage takes place?
Due to which of the following reason/s sewage water cannot be discharged directly into river?
Which of the following occurs during tertiary treatment?
Which of the following is/are found in discharge from industrial waste?
Identify the type of microorganisms involved in floe formation during sewage treatment.
Study the following statements regarding tertiary treatment of sewage and choose the correct option.
i. It produces methane gas.
ii. The effluents formed from these plants undergo chlorination.
iii. BOD is significantly increased at this step.
iv. It includes screening and passage of effluent through grit chamber.
Nitrogen fixation by organisms requires conditions that are:
Activated sludge should have the ability to settle quickly so that it can ______.
Why are flocs important in biological treatment of waste water?
Discuss about the major programs that the Ministry of Environment and Forests, Government of India, has initiated for saving major Indian rivers from pollution.
Which one is wrongly matched?
After a significant reduction in the BOD of wastewater, it is passed into a settling tank where bacterial flocs are allowed to sediment. This sediment is called ______.
Explain the steps involved in preliminary treatment of sewage.
