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Circulating fluid purification apparatus and pool water purifying system using the same

  • US 5,370,793 A
  • Filed: 05/12/1993
  • Issued: 12/06/1994
  • Est. Priority Date: 01/11/1991
  • Status: Expired due to Fees
First Claim
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1. A circulating purification apparatus comprising:

  • a filtration tank that uses porous ceramic filters and that is equipped with a means for backwashing said porous ceramic filters, said backwashing means having a mixing unit for producing a water stream as a mixture with high-pressure air for cleaning the filters in said filtration tank;

    a disinfecting tank, an adsorption tank containing an adsorption medium that adsorbs impurities from a circulating fluid, a main pipeline through which the circulating fluid flows, an inlet pipe and an outlet pipe connecting the main pipeline and each of said tanks, switch valves provided in said inlet pipes and in said outlet pipes and in said main pipeline between the junctions of said inlet and outlet pipes with said main pipeline, a source of the circulating fluid which is connected to the entrance and exit ends of said main pipeline, and a pump for circulating the circulating fluid in said main pipeline.

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