Waste Water Engineering
The normal values of over flow rates for secondary sedimentation tanks, ranges between

50,000 to 60,000 litres/sqm/day
40,000 to 50,000 litres/sqm/day
25,000 to 35,000 litres/sqm/day
80,000 to 10,000 litres/sqm/day

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Waste Water Engineering
The stone ware sewers

Are used for carrying sewage and drainage from houses
All listed here
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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