Pressure Filter Plant.
We illustrate herewith a pressure filter plant, the arrangement of which comes up to the practical engineer’s Meal. The plant in question is located at Keokuk, Ia., and consists seven (7) horitontal pressure filters, each eight feet diameter and twenty feet long, and having a combined capacity of 3,000,000 gallons per twenty-four hours.
This filter plant takes the muddy Mississippi river water, purifies it, and discharges it, bright and clear, into a filter gallery, from which it is taken by the costly high-classed pumping engines and delivered into the main supply pipes. It is calculated that the filter plant, arranged in the above manner, will, in a reasonably short time, effect a saving, on the main pumping engines alone, sufficient to pay the first cost ol filter plant.
Outside the longer life granted the main pumping engines by removing the grit and sediment from the water they have to handle, the saving effected by consumers in the matter of boilers, which are kept clear of mud and scale, and practical exemption from repairs to plumbing, valves and fittings, which gritty, unfiltered water cuts out and destroys, amounts annually to thousands of dollars. The filter plant, also, instead of being an expense, becomes a source of revenue, soon repaying the amount invested, inasmuch as numbers of people who appreciate the luxury of clean water for the bath and household purposes, will become consumers where they would not be so when filthy, unfiltered water is supplied by the water-works.
It is claimed that these filters, in connection with the coagulant device employed in their operation, will remove the typhoid and cholera germs from water supplies where they exist. The filter plant at Keokuk was erected by the New York Filter Company of New York city, of which Charles C. Worthington is president, whose filters combine the best features contained in over 100 patents, including those of the well-known Hyatt, National, Blessing and American type of filters, and the cities now using the “ New York Filter Company’s ” plants aggregate over eighty-four, twelve of these cities having been obliged to increase their plants, owing to the increased consumption after filtered water was furnished. They furnish filter plantsof either the gravity or pressure form, according to requirements. This question of filtering city water supplies is becoming a more and more serious and important one to the various water-works of this country, as the sources of supplies are gradually becoming contaminated by the growth of the cities on the bank? of streams and watersheds on which they are located, and we consider the above results particularly interesting at the present time when our water works superintendents and engineers are met together to exchange ideas on all subjects pertaining to their profession.
We also illustrate herewith an enlarged view of one of the filters embraced in the above filter plant. In a number of the New York Filter Company’s filter plants now in operation the water is forced through the filters directly into the distributing mains, or stand-pipe, as the case may be, there being practically no loss of head or pressure.
The New York office of the New York Filter Company is at 145 Broadway comer of Liberty street, where any inquiries may be made respecting their products.