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प्रश्न
What would happen if a large volume of untreated sewage is discharged into a river?
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उत्तर
It untreated sewage is discharged directly into rivers it will lead to serious pollution of the waters with organic matter and pathogenic bacteria, Protozoa and many other diseases. This water, if used will cause outbreaks of water-borne diseases.
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संबंधित प्रश्न
Distinguish between the roles of flocs and anaerobic sludge digesters in sewage treatments.
Explain the process of sewage water treatment before it can be discharged into natural water bodies.
Answer the following question.
What are ‘flocs’, formed during secondary treatment of sewage?
Removal of large pieces of floating debris, oily substances, etc. during sewage treatment is called _______________.
Rearrange the names of tanks used in sewage treatment as per the flow of the procedure.
- Settling tank
- Grit Chamber
- Aeration tanks
- Primary sedimentation tank.
The purpose of biological treatment of waste water is to ______.
Which of the following is TRUE about primary treatment?
In the process of biogas production which of the following anaerobic bacteria are used?
Identify the type of microorganisms involved in floe formation during sewage treatment.
______ refers to the organic matter which settles down after physical treatment of sewage.
During tertiary treatment, the bacterial floes sediment in the sedimentation tank, this sediment is called ____________.
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:
During sewage, treatment biogas is produced wits which include:
In a sewage treatment plant, all of the following processes belong to secondary treatment except:
In which of the following step large and small particles are removed from sewage through sequential filtration and sedimentation?
The primary treatment of waste water involves the removal of ______.
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 ______.
Removal of suspended, floating, coarse and solid particles in sewage treatment is called ______.
