Specification of Charles Felton Kirkman : treating sewage.

  • Kirkman, Charles Felton.
Date:
1871
Catalogue details

Licence: Public Domain Mark

Credit: Specification of Charles Felton Kirkman : treating sewage. Source: Wellcome Collection.

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    Kirkman's Improvements in Treating Sewage. categories and are disposed of for other purposes. The manurial particles in the sewage are at the same time preserved therein, and are sub¬ sequently removed by other processes and are converted into artificial manure. In the accompanying Drawing Dig. 1 represents a plan view and & Dig. 2 a sectional elevation of an apparatus by which I separate from the useful fertilizing properties contained in sewage those substances such as sand, gravel, sticks, stones, and other solid matters which are useless as manure. Dig. 3 is a vertical section of a close disinfecting chamber, wherein tbe floculent matter of sewage is disinfected and 10 precipitated by means of carbonic acid gas ; Dig. 4 represents a filtering chamber and absorbing bed by which the ammonia and other manurial salts will be extracted from the water. In carrying out my Invention the sewage coming from a main sewer or branch of a main sewer is caused to flow down a spout a into the appa- 15 ratus shewn at Digures 1 and 2, through which the liquid portion will pass, leaving the sand, grit, and other heavy matters behind on the screens b, bs b. This apparatus may be circular, square, octagon, or other shape, and it consists, mainly of a vibrating framework c} c, which at its lower end is provided with a sleeve shaft c5, and is supported on a vertical pin 20 fixed in the cross bar cQ. The frame is kept steady by a centre pin c5* above, and in the frame are mounted (in an inclined position) the series of screens b, b> b, of different degrees of fineness. These screens are placed one under the other, the coarsest being uppermost, and at the- lowermost part of each screen is a mouth, spout, or opening bl} through 25 which the solid substances retained by each screen are conducted by separate channels to any suitable receptacle as d, d1, d2. In order to shake the solid matters off the screens as they accumulate thereon a horizontal vibrating motion is imparted to the frame c, c, by means of a crank pin c1 on the rotating disc c2, being made to take into the vertical 30 slot of a bar c3, the lower end of which is inserted in a hole in the upper part of the framing c, as shewn best in the detached view Dig. 5. Upon communicating rotary motion to the shaft upon which the pin disc c2 is mounted the slotted bar c3 will be reciprocated in its guides c4, Dig. 5, and the frame c will be vibrated horizontally on its vertical 35 centres c\ c5*. The liquid matters pass away into a wTell e below, from which they will then be raised by an endless chain of buckets/*, /*, or by a pump, and will be conducted to a close disinfecting chamber g, Dig. 3,