Specification of John Hanson : treating sewage.

  • Hanson, John.
Date:
1875
Catalogue details

Licence: Public Domain Mark

Credit: Specification of John Hanson : treating sewage. Source: Wellcome Collection.

    9/10 (page 7)
    _ Sanson’s Improvements in Treating Sewage. certain crops being the best kind of manure), and especially adapted for use on heavy land, as it will render the soil more friable and capable of being more easily worked. I am further enabled to utilize the otherwise waste black ash from alkali works, and fine coal ashes, both which 5 products at present are from their non-utility and daily accumulation upon land purposely bought, and therefore lost to more useful purposes, a source of great expence to provincial towns and other places, and to profitably dispose of the sludge, for which there has hitherto been but little or no market, the cost of drying or evaporating the moisture there- 10 from causing the loss of a large per-centage of valuable fertilizing properties, and being so very expensive that in many large towns it is disposed of (after the previous necessary process of precipitation) at a complete loss and at great expence by being stored in deeply dug trenches, wherein it never dries. 15 According to this Invention, which can be equally as well applied on a large as on a small scale, the entire cost of dealing with twelve millions of gallons of sewage per day and the manufacture of manure therefrom will be but about nine thousand pounds per annum, and supposing the manure to sell at the exceedingly low sum of six shillings 20 per ton, eighteen thousand pounds would be realized, and thus there would be a yearly profit of nine thousand pounds. Having now particularly described and ascertained the nature and object of my said Invention, together with the manner in which the same is to be or may be performed or carried into practical effect, I 25 would remark in conclusion that I claim as my Invention the novel and peculiar method or means of treating sewage or foul water by precipi¬ tating the sludge suspended therein, and the manufacture of a readily portable inodorous and dry manure therefrom, substantially in the manner and according to the improved processes as herein fully specified 30 and described. In witness whereof, I, the said John Hanson, have hereunto set my hand and seal, this Sixteenth day of November, in the year of our Lord One thousand eight hundred and seventy-five. JOHN HANSON, (l.s.) LONDON: Printed by George Edward Eyre and William Spottiswoode, Printers to the Queen’s most Excellent Majesty. 1875.