Novel Well at Cape May Water Works
The accompanying illustration (Fig. 1) shows the well at the water works of Cape Ann N. J., which discharges at the rate of 1,000 gallons per minute. This is said to be especially good when it is considered that the diameter of the pipe lining it is but 8 inches. The depth of the well is 532 feet, with a static head of water of 16 feet, the pumping head being 50 feet. It is of interest to note that the depth of the air lift pump is 150 feet and the percentage of submergence is 66 2-3 feet, while the air pressure carried is 45 pounds per square inch and the cubic feet of air consumed is 285 with 1,000 gal Ions of water discharged per minute. It may be stated that the water stratum is about 500 feet from the surface, and that it consists of sand, gravel and shells. The pump used in this service is an 8-inch air lift designed and constructed at Indianapolis, Ind. The sire of the air line in the w’ell is 2 inches, the well casing being used as the water discharge pipe. It is of interest to note that air lifts, pneumatic displacement pumps and compound air pumping system are being extensively used for well water supplies, the compressed air pumping plant having proved efficient in operation, low in cost and simple in construction and operation. Fig. 2 shows the details of construction and indicates the method of operation of this modern system of raising water by the use of the air pumps; the piping for forcing the air into the well and the discharge pipe which conducts the water to the surface and wherever required. At the left may be noted the air compressor furnishing the necessary compressed air for operating this system of pneumatic displacement pumping.