A digest of facts relating to the treatment and utilization of sewage / by W.H. Corfield.

  • Corfield, W. H. (William Henry), 1843-1903.
Date:
1870
Catalogue details

Licence: Public Domain Mark

Credit: A digest of facts relating to the treatment and utilization of sewage / by W.H. Corfield. Source: Wellcome Collection.

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    CHAPTEE VI. SEWERAGE. I. Introductory Original and secondary ideas of the function of sewers ..... Reason for large size of sewers Sewage foul even though excrement be kept from sewers ..... Eivers still polluted . Walls of sewers should be impervious; of drains pervious .... Both conditions cannot be combined PAGE 126 126 127 128 130 131 131 II. Drain-sewers 132 Economy of egg-shaped sewers Size of sewers .... Pervious mains preferable . Depth at which drain-sewers must be laid Incline Outfall: into sea, rivers, tanks . Sluices .... Subsoil water lowered by brick sewers . Cellars no longer flooded; wells dried . 134 135 137 137 138 139 140 140 141 III. Impervious Pipe-sewers ... 142 Separation of storm-water from sewage at Chelms- ford ^ . • Size of pipes Impervious pipes act as sewers, not as drains They do not lower the subsoil water . Mr. Menzies' plan 143 143 144 144 145