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Question : Sewagetreatmentcan be done by integratingartificial and natural processes. Explainthis usingthe exampleof Arcata town.

Answer»

Solution :The peopleof Arcata withbiologists createdan intergratd waste watertreatmentprocess within a naturalsystem . The cleaningoccurs in twostages.
a. Theconventional sedimentation , filteringand chlorinetreatmentsare given.Theremaniningpollutants were removed in the second stage.
ii. The biologistsdeveloped a seriesof sixconnected MARSHES over 60 hectare of marshland. Appropriateplants alage ,fungi and bacteria were seeded into thisarea which NEUTRALISE , absorb and assimilate the pollutants. Henceas THEWATER flows through the marshes, it GETS PURIFIED naturally.


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