Specification of James Brough Pow : treating sewage.

  • Pow, James Brough.
Date:
1872
Catalogue details

Licence: Public Domain Mark

Credit: Specification of James Brough Pow : treating sewage. Source: Wellcome Collection.

    13/16 (page 11)
    Tow's Improved Arrangements for Treating Sewage. water, from the crown of the arch to the dotted line is intended to be filled up with brickwork, at all events it may be built up from a to b \ when the water rises to a then the storm water sewer No. 7 comes into operation. The object as far as possible is to confine the sewer for 5 sewage water only. Figure 7 is the same in perspective. It does not necessarily follow that the sewers are to diverge; they may run parallel to each other, the storm water sewer direct to the river. Having now described my process as applied to sewage matter, I will proceed to describe its application to the purification of tributary 10 streams, and for the purification of potable water:—It is well known that in many rivers salmon might be profitably reared were they not polluted by the waters which flow from mines, and by the refuse from manufactories and chemical works, and that in many smaller towns the expense of collecting and of attempting to utilise sewage costs more ] 5 than the returns obtained from the products. By the use of my improved ascension filters, which may he constructed on a small scale, firstly, the water which feeds rivers may be thoroughly purified by simply causing it to pass through the filters at the head of the river or at the sources of supply, and when requisite by charging the 20 filters with materials adapted for the absorption of “ hush ” or mineral matter in suspension or solution, and when the object in minor towns is to get rid of the sewage at a small cost, the use of my filters will enable the local boards to purify the sewage water, which may then be permitted to flow into rivers or canals without detriment to the health of the 25 surrounding population. When water charged with lead in solution from mines is desired to be purified, I charge my filters with pulverised iron pyrites (hi-sulphide of iron) combined with vegetable charcoal and formed into compressed cubes or half cubes in half cubes when there are three or more layers, 30 each layer overlapping the joints of the other. When it is intended to filter water charged with copper, I employ a charge or charges of bright steel or iron filings profusely mixed with charcoal and formed into compressed cubes. The adoption of my principle for the better purification of water 35 intended for domestic purposes will be a great improvement upon the present method of filtration by percolation through sand beds and gravel as commonly practised by the water companies of large cities.