Specification of Burton Henry Vallé : treating sewage.

  • Vallé, Burton Henry.
Date:
1875
Catalogue details

Licence: Public Domain Mark

Credit: Specification of Burton Henry Vallé : treating sewage. Source: Wellcome Collection.

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    Specification. A D. 1874.—N° 3784. 3 Valle's Improvements in Treating Sewage. end of a vertical condenser, the syphon being connected with each in an oblique or diagonal direction to admit of its being readily cleansed if required. This syphon is the only passage for the escape of the steam and gases from the retort into the condenser, from whence the gases 5 pass through another syphon into a cylindrical refrigerator, and thence through a purifier, after which the gas passes into a gasometer fit for use. One end of the retort is open to admit a fireproof shaft having a spiral line of teeth, and also for connecting a tube and receiving the sewage sludge, and the other or opposite end is closed. 10 At a suitable distance from the charging end of the retort in front of it is placed a metal frame, in which is fixed a hollow cylinder partly open at one end and closed at the other in a direct line with the retort, and also a metal tube of sufficient length is connected with the cylinder and the mouth or open end of the retort, so that when the tube is 15 charged with sewage sludge no external air can enter the retort at that end, nor any gas can escape therefrom, which is safely effected by a valve apparatus within the cylinder at that end of it which connects with the tube. Within the cylinder there is a revolving shaft placed axially therein, and provided with radial arms or blades arranged spirally 20 thereon. At the closed end of the cylinder furthest from the furnace this cylinder is surmounted by another of the same diameter, open at both ends, one of which joins a corresponding opening in the upper side of the horizontal cylinder, thus forming one continuous right-angled cylinder. In this vertical cylinder a similar revolving shaft is fitted, 25 provision being made for kneading the sewage sludge prior to its entry in the horizontal cylinder. The sewage sludge enters the upper end of the vertical cylinder, and by the revolution of the shafts it is propelled through the tubes into the retort. From the end of the horizontal cylinder connected with the tube 30 and connected with the horizontal revolving shaft thereon there is a metal shaft in the line of the retort axis to the mouth of the retort, which is prolonged by means of a fireproof shaft prepared for the purpose, which passes axially through the retort to the closed end thereof, and which shaft is made to revolve in a certain ratio to the revolving shafts 35 within the cylinder. Along that length of the shaft within the tube from the cylinder to the retort radial arms or blades are arranged spirally for assisting the