File:Cassier's magazine (1911) (14760748041).jpg

Identifier: cassiersmagaz401911newy (find matches)
Title: Cassier's magazine
Year: 1891 (1890s)
Authors:
Subjects: Engineering
Publisher: New York Cassier Magazine Co.
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Smithsonian Libraries

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ofoperation by such attendance as isgenerally available in steam powerplants. Among the various types of water-softening and purifying systems man-ufactured by Wm. B. Scaife & SonsCompany, of Pittsburg, Pa., is anautomatic continuous system, knownas the syphon system, so called be-cause its operation depends upon theaction of the syphon. The water entering the systemflows into the syphon tank, shownin the illustration, until a height isreached sufficient to start a flowthrough the main syphon, whichthen continues to flow until the tankis emptied. When the main syphonbegins to flow it starts the auxiliarysyphons, which introduce the re-agents into it. during its period offlow. As soon as the tank fromwhich the main syphon operates isemptied all syphons stop flowinguntil the tank refills to the pointwhere it again starts the syphonsflowing. The harmonious action ofthese syphons depends upon the headof water in the tank and not upon the incoming rate of flow 561 562 CASSIERS MAGAZINE
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SYPHON WATER PURIFIER It is, of course, evident that themain syphon will always start andstop under the same conditions.This being the case, the auxiliary orchemical - introducing syphon willalways operate under the same con-ditions. It will, therefore, be readilyseen that the chemicals are not onlv introduced in exact proportion, butin exact amount to a certain definiteamount of water determined by thestrength of solution and the set-ting of the valve in the auxiliary orchemical syphon. The chemical syphon, as will beseen in the cut, is fed from a small WATER PURIFICATION 563 constant level solution tank connectedwith the main solution or solutionstorage tank. The flow to the con-stant level solution tank is controlledby float, to keep the head underwhich the chemical syphon is oper-ated always the same. The condi-tions for operation of the chemicalsyphon are, therefore, controlled onlyby the flow in the main syphon,which, in turn, is dependent only onthe water entering the syphon ta

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