Waste Water Engineering
In the activated sludge process

Sludge is activated by constant stirring
Water is removed by centrifugal action
Aeration is done with an admixture of previously aerated sludge
Aeration is continued till stability

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Waste Water Engineering
The stone ware sewers

All listed here
Are manufactured from clays and shale
After casting are dried and burnt at temperature 150°C, 700°C and 1200°C
Are used for carrying sewage and drainage from houses

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