explain why the liquid is sprinkled over stones with micro organism
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In the filter method, the waste water is sprinkled over the surface of a bed of small stones of one to two metres deep. When the water percolates through the stone bed, a very complex biological growth of algae, fungi, protozoa and bacteria occurs. By these formation, the waste water gets oxidised. The oxidised waste water is then passed into the sedimentation tanks.
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by the water it made hot so, microorganisms is to be visible....
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