Waste Water Engineering
The effluent of a septic tank is

As good as that from a complete treatment
None of these
Fit for discharge into any open drain
Foul and contains dissolved and suspended solids

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Waste Water Engineering
The stone ware sewers

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
All listed here

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