Specification of James Brough Pow : treating sewage.

  • Pow, James Brough.
Date:
1872
Catalogue details

Licence: Public Domain Mark

Credit: Specification of James Brough Pow : treating sewage. Source: Wellcome Collection.

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    Pow's Improved Arrangements for Treating Sewage. to nine feet in height, with a slanting roof supplied with skylights and a ventilator capable of being closed. The entire building to he closed in and easily ventilated. After the sewage is deposited upon the kiln the fires are to he lighted, coke to he used instead of coal; the heated air will range from 70 5 to 90 Fahr. and the evaporation will commence. I then introduce through small apertures as the means of deodorising the material basins containing four pounds of common salt, into which is poured a pint of sulphuric acid; a red hot heater is then dropped into the basin and the aperture closed. This quantity will generate sufficient 10 chlorine gas to disinfect 1,000 cubical yards of air, and can be repeated in number according to the size of the kiln. The gas generated is two and a half times heavier than atmospheric air, and will speedily decompose and dissipate the bad odour and deodorise the sewage matter. The ventilator when opened will throw off the deodorised air 15 having a smell of seaweed. After a sufficient time has elapsed which experience will dictate, the doors of the kiln can be gradually opened and the air admitted ; an arrangement can be made at all times for the evolution of this gas to a moderate extent to keep the buildings sweet and free from all offensive smells. 20 The buildings must be constructed of wood, brick, or stone, without any iron or metal work, on account of the nature of the gas. Figure 5 represents a section of the fire-places for the drying kiln; C, C, 0, the general flue six to eight inches wide by three or four feet in height, perforated with holes, to allow of the dispersion of the hot 25 air. E represents the chimney (if one be needed), but if good coke be used there is little or no smoke; a fall from A to B on the floor of the kiln and a floor from B to C for the better drainage of water thrown off by the sewage, a, a, a, an open space at the end of each fire which will admit the heated air which must pass under the fires; 5, 5, the 30 flues, six inches deep by four feet wide, may be divided by intermitting bricks to rest the tiles of the floor, and will produce a great draught. Figures 6 and 7 show my improved plan of confining sewage water in the sewage, to the exclusion of rain water. Figure 6 is the ordinary sewer, the basin is supposed to be sufficient for all the ordinary sewage 35