Question

It is possible to reduce river pollution by the use of sewage water for irrigation

Answer 1

yeah its possible to reduce river pollution by the usage of sewage water for irrigation
Hope it helps.....

Answer 2

It is possible to reduce river pollution by using the sewage water for irrigation .

Biochemical Oxygen Demand(BOD) which directly refers to decreased amount of dissolved oxygen in an aquatic system. Discharge of sewage into water body is one of the prominent reason for the increase in BOD of an aquatic environment.  

A certain amount of dissolved oxygen is required for every aquatic organism to survive in the aquatic ecosystem. If the BOD increases it will result in the suffocation of many fishes in the environment and bring an ecosystem imbalance.  

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