Waste Water Engineering
The stone ware sewers

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

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Waste Water Engineering
In the activated sludge process

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

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