Specification of François Jules Fahlman : apparatus for treating sewage, &c.

  • Fahlman, François Jules.
Date:
1872
Catalogue details

Licence: Public Domain Mark

Credit: Specification of François Jules Fahlman : apparatus for treating sewage, &c. Source: Wellcome Collection.

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    Fahlman's Improved Apparatus for Treating Sewage, fyc. In both Figures a represents the reservoir; b, the tray or partition; c, the lower compartment of the reservoir; d, the upper compartment; e, the level of the disinfecting materials; f the basin shaped funnel; g, the outlet of branch sewer ; li, the outlet or delivery pipe ; and i} the canal or conduit of the main sewer. The pipe Jc of the basin f which 5 receives the sewage and other matters to be disinfected, reaches a small distance below the perforated tray or partition b in order to facilitate the filling of the compartment c; and the reservoir may be provided with small wTheels l to enable it to be transported from place to place by traction, or it can be formed as a flat-bottomed boat, so that it can float 10 in sewers or canals. The upper compartment of the reservoir can be divided into two, three, or more lateral compartments for receiving disinfecting materials of different kinds, the first containing earth intended to retain matters suspended in the liquids, and the others for containing disinfectants 15 capable of precipitating the solids dissolved in the liquids ; and for these purposes each partition between the compartments has in it a hole near the upper edge, but above the level of the disinfectant, and from this hole the liquid descends by means of a tube or pipe opening near the bottom of the next compartment in which the liquid rises from the 20 bottom to the top, traversing the bed- of disinfecting matter, to run off in the same manner to the next compartment or compartments, and finally into the canal or main conduit. The apparatus is employed at the main sewers or canals before and below the branch sewers, drains, or pipes from the houses or other places 25 in such a way that the refuse matter can fall into the basin f\ and the liquid, after traversing through the disinfecting materials, can run off to the canal or main conduit i. If the openings of the sewers or pipes are level with the pathway, or with the water in the canal or main conduit, a hole m can be dug in the 30 ground in order to place the reservoir in such a position that the sewage matters can enter the basin f and the liquid run off through the outlet or delivery pipe liand for manufactories and other places the apparatus is placed in the most convenient position for receiving the liquids and matters to be disinfected, and facilitating their removal after 35 disinfection.