Self-purification of ...

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Self-purification of large and deepriversprocess, such as the Gangesdaycan be restored and its support in the first place through the unloading of spentoxygen (COD. BOD.TKN), which was passing through sewage and industrial waste waterandagricultural drainage water and which is carried out to the river and can be done by raising the level of modernization of stations operatin on the river course oftreatment