Specification of Benjamin Young and Peter Brown : collecting and disposing of sewage.

  • Young, Benjamin
Date:
1858
Catalogue details

Licence: Public Domain Mark

Credit: Specification of Benjamin Young and Peter Brown : collecting and disposing of sewage. Source: Wellcome Collection.

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    Young <${ Browns Method of Collecting and Disposing of the Sewage of Towns. brickwork, or other convenient and suitable materials along the banks of the river at a convenient distance between low and high water mark. This sewer or drain we prefer to construct of cast-iron pipes or tubes, which must be of considerable sectional area, to be computed according to the quantity of sewage expected to be carried through it in a given time. These pipes or tubes are 5 to be sunk in the solid ground, which must be excavated for the purpose, and all the land drains and sewers must be made to communicate with the main sewer or drain so formed. This main drain or sewer may, if desired, b§ enclosed within an embankment extending from the present line of shore to any distance that may be considered necessary, and manholes or openings 10 must be made in the pipes at suitable distances for the convenience of obtaining access, when required, to the sewer. This embankment may be used either as additional wharfage accommodation, where required, or as a promenade or carriage way along the side of the river, or, if preferred, a carriage way may be raised up on columns or arches on the embankment, and the spaces beneath 15 may be used as warehouses or for other purposes. These large main sewers or drains which are intended to receive the sewage from the land drains are to be made to empty themselves into pumps, from which the sewage is to be pumped or lifted into large tanks or reservoirs situate at a distance from the town. These reservoirs must be covered over and converted into close 20 chambers, in which, when filled, the liquid is to remain at rest for a suitable time, in order to allow the solid matters to settle to the bottom, or instead of the large main drains or sewers being made to empty themselves into pumps, from which the sewage is afterwards pumped into reservoirs, as above men¬ tioned, force pumps may be adapted direct to the large iron pipes or tubes of 25 which the sewer is constructed, and by this means the sewage will be pumped at once into the reservoirs. While the sewage is thus settling and depositing its solid matters at the bottom of the reservoir, the liquid will give off many noxious vapours, such as sulphuretted hydrogen and other gases, which are to be collected and drawn out of the reservoirs by means of an artificial draught 30 induced by fans, blowers, high chimnies, or other convenient and suitable exhausting apparatus, and the noxious vapours so collected are conducted to a furnace or furnaces, and are passed through the fires, where they will be consumed, or the deleterious gases removed or burnt out of them. After the sewage has been allowed to remain at rest for from six to ten days, the super- 35 natant liquid is allowed to run off at the high level to which it has been lifted to the pumps, and it will be carried through suitable pipes to some outfall, and if desired, it may be conveyed to the sea ; but it has been proved by experiment that the supernatant liquid after being allowed to remain at rest for some
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