Specification of George Rydill : treating sewage.

  • Rydill, George.
Date:
1875
Catalogue details

Licence: Public Domain Mark

Credit: Specification of George Rydill : treating sewage. Source: Wellcome Collection.

    14/18 (page 12)
    Ry dill's Improvements in Apparatus for Treating Sewage. forated pipes are unpierced, so that they may pass through the side or sides or end of the reservoir or channel, which may be made up with a moveable plate. The perforated pipes fixed near to or along the bottom may be connected with each other or kept separate, and I connect to the perforated pipe ends passing through the side or sides of the reservoir or 5 channel or up the end of the reservoir or channel with a fan or fans of sufficient power to force air through the perforated pipe openings; or an air pump or engine may be used to force the air first into a large wrought-iron air vessel connected to the perforated pipe or pipes, or the air pump or engine may pump the air direct into and through the pierced 10 pipe openings to agitate and rise through the filtered waters. In order to make it clearly understood I will describe the air forcing machine as being a fan, and by any suitable motive power I force air with the fan into the end or ends of the pipe or pipes which are con¬ nected to the fan, causing the air to be forced through the perforated 15 openings in the pipes, causing the filtered waters to run into the reservoir or channel to become agitated by the air passing through the waters, which gives them the appearance of boiling water in a vessel, causing any decomposed matter in the water to be so oxydized by being brought in contact with the air that fish will live in the water, which is a gua- 20 rantee of its purity. The filtered waters may be thus treated to purify them as they slowly pass through the reservoir or channel from the purifying works, or I draw or force the air previous to passing through the perforated pipes in the reservoir or channel through lime water, caustic soda water, or through a retort connected with one in which 25 charcoal is heated, or through sulphuric acid or other acid waters or gases; or chemical waters may be used to create precipitation and puri¬ fication of polluted waters; or I precipitate the heavy matters in sewage by running the sewage waters into a vessel, tank, or reservoir containing perforated pipes by forcing the air previously passed through caustic 30 soda, lime, or sulphuric acid chemical waters into the sewage waters, when on the air ceasing to agitate the sewage and polluted waters pre~ cipitation at once commences to take place. When sufficiently settled the clear water is run off to be further cleared by Alteration ; or instead of agitating the clear filtered waters with air a shaft or shafts with arms 35 may be fixed in suitable bearings in the reservoir or channel so as to agitate and cause the waters to be brought in contact with the air, but I prefer to pass the air through the pierced pipes, as described.