Specification of John James Lundy : purifying sewage water.

  • Lundy, John James.
Date:
1870
Catalogue details

Licence: Public Domain Mark

Credit: Specification of John James Lundy : purifying sewage water. Source: Wellcome Collection.

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    Specification. Lundy's Improvements in Purifying Sewage Water. example, as those waters which foul the streams and run to waste from distilleries, dye works, paper works, and other manufactories, of sewage, and of sewage supernatant water, and consists in submitting them to what is known as the carbonaceous residuum or animal charcoal, which is produced and obtained in the manufacture of prussiate of 5 potash. In carrying out the first part of my Invention I filter the foul water, waste waters, or the sewage supernatant water obtained after the separation of the more solid portions of the sewage by mechanical means, or by allowing the same to subside in settling ponds by filtering the 10 same through the animal charcoal before described by any of the well known methods of Alteration, the said animal charcoal being either mixed or not mixed with or placed in alternate layers or otherwise with cinders, coke, gravel, sand, stones, or any other suitable substance or substances singly are combined, whereby the filtering beds or tanks may be kept 15 more open according to the rapidity of the filtration required, or to the density or specific gravity of the water requiring to be decolorized, deodorized, or purified. In carrying out the second part of my Invention I cause the foul water, waste waters, supernatant sewage water, or sewage to be mixed 20 up with the before-mentioned animal charcoal by being stirred up therein, whereby after the animal charcoal has been allowed to subside or precipitate the supernatant water will be found to be decolorized and deodorized. Iu carrying out this part of my Invention the amount of animal 25 charcoal to be employed will be dependent on the degree of impurity of the waters or sewage to he treated, but I prefer to use such a proportion as that the desired degree of decolorization and deodorization may he effected, which proportion can easily be ascertained by previous* ex¬ perimental trial on a small scale. Some waters from paper works will 30 be found to require as little or even less than 3 ounces per gallon, and it will further be found that the precipitated charcoal can be used over again until its powers of decolorization and deodorization are exhausted, when it will be found suitable for agricultural purposes, or it may be dedicated and reburnt for use again for the decolorization and 35 deodorization of waters and sewage.