Specification of George Rydill : purifying sewage, &c.

  • Rydill, George.
Date:
1875
Catalogue details

Licence: Public Domain Mark

Credit: Specification of George Rydill : purifying sewage, &c. Source: Wellcome Collection.

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    By dill's Impts. in Machinery and Materials for Purifying Sewage, 8fC. chamber to raise the filtered waters from the chamber underneath the filter bed. When the same is completed as described I open or raise the sluice or valve at one or both ends so that a small quantity of the polluted waters will flow through until the chamber underneath the filter bed is filled with filtered water and the water in the reservoir or 5 channel becomes level with the river or stream; I then open the sluices or valves with suitable appliances without fear of injuring the filter bed, and as the pump or pumps raises the filtered waters from the chamber other filtered water supplies its place under part vacuum. When the filtered water in the chamber requires to be raised a 10 reasonable height within the limits of atmospheric pressure I erect large cast or wrought iron air-tight chambers or vessels above the reservoir or channel, and the said metal air-tight chambers or vessels are connected by means of pipes and valves to the chamber under the filter bed. On the top of the air-tight metal chambers or vessels valves are fixed. In 15 order to explain their working I close the valve in the pipe connecting the elevated metal air-tight vessel with the chamber under the filter bed, and I open the air valve on the top of the vessel. Connected to this elevated air-tight chamber or vessel is a steam pipe from a steam boiler. I open the valve in the steam pipe, and the steam forces the air out 20 through the valve on the top of the elevated air-tight metal vessel. I then close the air valve on the top of the said vessel and open the valve in the pipe leading to the chamber under the filter bed. The steam becomes condensed and a vacuum is formed which causes the atmospheric air to press upon the polluted waters in the reservoir or channel, and 25 pressing also with force upon the filtered waters in the chamber below forces them up into the elevated air-tight metal chamber or vessel. The valve is then closed in the pipe leading to the chamber under the filter bed. On opening the air valve on the top of the air-tight metal chamber or vessel the raised filtered water is run through a valve in the 30 elevated metal chamber or vessel to any required*place. This method of raising the filtered waters may be worked to any required extent, or I pump out the air in the elevated metal air-tight chamber with an air pump or engine to form a vacuum and raise the filtered waters from the chamber under the filter bed by opening and closing the required valves 35 when a vacuum is formed. By the aforesaid arrangement of cast or wrought iron air-tight vessels any number of such vessels may be used to form a vacuum in the chamber or chambers. The sluices are