Specification of Gustav Alsing : treating sewage, &c.

  • Alsing, Gustav.
Date:
1873
Catalogue details

Licence: Public Domain Mark

Credit: Specification of Gustav Alsing : treating sewage, &c. Source: Wellcome Collection.

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    Alsing's Improvements in Treating Sewage, 8fC. And in order that my said Invention may be properly understood I will proceed to describe the same with reference to the annexed Drawings. Pig. 1 represents longitudinal section; Pig. 2, plan of same; Fig. 3, end view; Pig. 4, cross section at A, B; Pig. 5, cross section at 0, D; 5 Pig. 6, back view of cone; and Pig. 7 is a general view of the machine. In order to facilitate the mixing of the before-mentioned materials in definite proportions, I place the powdered gypsum in a large hopper or receptacle G, at the bottom of which is a revolving worm or screw A, actuated by means of differential speed pulleys B, by which means the 10 powdered gypsum is given out in regulated quantities, and deposited on an endless belt C, Pig. 7, or other suitable carrier, to be thus conveyed to a mixing cylinder E, Fig. 7; at the same time a regulated supply of moist night soil, sewage deposit, or other manurial slush is also conveyed to the mixing cylinder by means of a chain pump. While passing 15 through the said cylinder the manurial slush and the dry powdered gypsum are thoroughly mingled by means of revolving arms, after which the mixture is discharged in a pasty condition through suitable openings into a succession of long troughs P, Pig. 7, placed below and moving off upon rollers as they become filled with the pasty compound. 20 These troughs may be divided across into any convenient spaces so as to form moulds according to the size and shape into which it is desired the product should solidify. As soon as the blocks or bricks thus formed are sufficiently set (which takes place very rapidly), they are turned out upon a drying frame, when the troughs will be ready to be again filled. 25 The drying may also be greatly facilitated by fixing upright studs or cores in the moulds, by which means the bricks will be turned out perforated. When using my Invention in connection with the method of purifying sewage by filtration I use an additional feeding apparatus similar to 30 that used for the gypsum for the purpose of adding to the mixture of deposited sewage slush and gypsum a regulated quantity of the saturated filtering material after it has been removed from the filters. In this way I readily obtain a convenient compound of all the manurial substances extracted from and deposited by the sewage. 35 When there is much free ammonia in the moist material operated on I neutralize and fix it with dilute sulphuric or other suitable and con-