Patent GB-190023412-A (GB)
Title: Improvements in Apparatus for Purifying Sewage and other Liquids.
Inventor: CAMERON DONALD
Filed: 1900-12-21
Granted: 1901-12-21
Abstract: 23,412. Cameron, D., Commin, F. J., and Martin, A. J. Dec. 21. Filters, supplying and discharging liquid in.- Relates to apparatus for use in the bacterial treatment of sewage and other liquids, and adapted to deliver such liquids to the filters or beds in which they are treated. One form of apparatus for this purpose comprises a rotary chamber 2, formed with outlets 3, arranged helicoidally, so as to discharge liquid successively into receivers 4 provided with perforated pipes 1. which discharge the liquid upon the various filter beds 7. A weighted lever or brake may be applied to the chamber, for the purpose of reducing its speed, when required, so as to allow each bed to receive a sufficient supply. Apparatus of the kind described in Specification No. 23,042, A.D. 1896, and the ponding-valve described in Specification No. 18,322, A.D. 1899, may also be employed. A second form, of apparatus for delivering sewage &c. comprises a rocking vessel provided with perforated pipes. or a fixed receiver having two compartments with perforated pipes, and supplied with liquid by means of a rocking- vessel. The rocking-vessels may be actuated by means described in Specification No. 3003, A.D. 1896. The apparatus described in Specification No. 5671, A.D. 1898, may be employed for controlling the supply to, and discharge from, two filter beds, the surface of the lower of which is above the floor of the other, or of which the floors are at the same level, and the surfaces at different levels. An apparatus, such as that described in Specification No. 19,697, A.D. 1898, for use in controlling the flow of liquid to and from filters at different levels, may be regulated by means of clockwork or an equivalent mechanical arrangement, or by means of a regulated flow of liquid, as described in Specification No. 22,965, A.D. 1897. The valves of two series of filters, each series consisting of three filters at different levels, may be controlled by means of a pair of tipping-buckets supplied with a regulated supply of liquid, and mouuted on a shaft, connected to the various valves by rods and levers. The uppermost filters are provided with admission valves carried by levers separately controlled so that the valves are not opened simultaneously. Instead of suspending the counterweight 47 in the discharge well 10, as described in Specification No. 18,322, A.D. 1899, it may be suspended in a chamber 45, communicating with the well, and the admission valve 14 of one filter may be opened, when a second filter is discharged by means of a valve in the chamber, or in a subsidiary chamber 1 : or a valve 52, connected to a weighted lever 50, may be employed ; this lever is actuated by means of a lever 13, carrying the valve-actuating bucket 12. The valve-actuating buckets of the filter-discharging apparatus may receive effluent from the discharge well, or from a suitable chamber into which filtered effluent flows. This extra supply of liquid ensures the proper filling of the buckets, when the water level falls in the filters as a result of leakage, or other cause. Brass or other suitable bushings may be fitted in the perforations of pipes discharging sewage, for the purpose of preventing the formation of rust.