Modern methods of sewage disposal : for towns, public institutions, and isolated houses / by Geo. E. Waring, Jr.

  • Waring, George E., Jr. (George Edwin), 1833-1898.
Date:
1896
Catalogue details

Licence: Public Domain Mark

Credit: Modern methods of sewage disposal : for towns, public institutions, and isolated houses / by Geo. E. Waring, Jr. Source: Wellcome Collection.

Provider: This material has been provided by the National Library of Medicine (U.S.), through the Medical Heritage Library. The original may be consulted at the National Library of Medicine (U.S.)

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    CHAPTER II. WHAT SEWAGE IS. Roughly speaking, all the water-borne wastes of a community go to make up its sewage. More accurately, the term is applied to what is removed by underground channels, or sewers, — as from a town to a river, or from a house or public institution to a cesspool, or other outlet. It is not usually applied to gutter flow, as such, though where there are storm-water sewers, this becomes, during rains, by far the most considerable, and in some regards the most troublesome, element of sewage. The sewage of different towns is reasonably uniform in composition, save where the sewers receive the dis- charge of woollen mills, dyeing establishments, and other industrial works which produce a large effluent, often surcharged with chemicals and coloring-matters. This factory waste usually may be, and where practi- cable it always should be, cared for by those who produce it. Such care may more often than not be made to pay more than its own cost, in the value of the materials recovered. When this waste must, of necessity, enter the sewers, it may modify the treatment required in disposal.