WO2007000747A1 - Artefact de traitement de l'eau - Google Patents

Artefact de traitement de l'eau Download PDF

Info

Publication number
WO2007000747A1
WO2007000747A1 PCT/IB2006/052158 IB2006052158W WO2007000747A1 WO 2007000747 A1 WO2007000747 A1 WO 2007000747A1 IB 2006052158 W IB2006052158 W IB 2006052158W WO 2007000747 A1 WO2007000747 A1 WO 2007000747A1
Authority
WO
WIPO (PCT)
Prior art keywords
water treatment
artefact
water
composite body
housing
Prior art date
Application number
PCT/IB2006/052158
Other languages
English (en)
Inventor
Leon Buchan
Original Assignee
Ppa Water Industries (Proprietary) Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ppa Water Industries (Proprietary) Limited filed Critical Ppa Water Industries (Proprietary) Limited
Publication of WO2007000747A1 publication Critical patent/WO2007000747A1/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
    • A01N59/26—Phosphorus; Compounds thereof
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/68—Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water
    • C02F1/685—Devices for dosing the additives
    • C02F1/688—Devices in which the water progressively dissolves a solid compound

Definitions

  • HOCI is very useful as a disinfecting or water treatment agent. Although comparatively few investigations appear to have been made on the activity of chlorine in relation to its concentration, it has been stated that the chlorine concentration is of minor importance compared with the influence of pH. Thus, chlorine is in the class of disinfectants which is only a little affected by dilution, meaning that HOCI holds much promise as a disinfecting agent for small volume batch drinking water sanitisation.
  • the inherent chemical properties of both low and high test calcium hypochlorite however cause fast release of the HOCI active germicide and hinder the use of calcium hypochlorite as a slow-dissolving HOCI release agent.
  • the composite body may include a tabletting lubricant, e.g. zinc stearate.
  • a tabletting lubricant e.g. zinc stearate.
  • the composite body includes between about 0.5 % and about 2 % by mass of the tabletting lubricant.
  • a water treatment artefact in accordance with the invention as shown in Figure 1 of the drawings and generally indicated by reference numeral 10, was prepared.
  • An admixture of low test calcium hypochlorite in the form of a powder and particulate calcium phosphate, together with chloride of lime and zinc stearate were tabletted to form a compacted circular cylindrical composite tablet body 12.
  • the calcium hypochlorite (including impurities), chloride of lime and calcium phosphate were in a mass ratio of about 45 : 20 : 35.
  • the tablet body 12 included about 2 % zinc stearate.
  • a water treatment device in accordance with the invention for use with the water treatment artefact of the invention is shown and generally indicated by reference numeral 20.
  • the water treatment device 20 includes a buoyant holder or float 22 with water treatment artefact compartments 24 being located in an operative underside of the float 22. In use, the compartments 24 are submerged.
  • the compartments 24 are elongate and circular cylindrical in shape and are open- ended.
  • the compartments 24 are shaped and dimensioned each to receive an elongate water treatment artefact in accordance with the invention and to allow water to reach the end surfaces of the artefact thereby slowly to release HOCI active disinfecting agent into the water.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Dentistry (AREA)
  • Wood Science & Technology (AREA)
  • Plant Pathology (AREA)
  • Health & Medical Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Agronomy & Crop Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Pest Control & Pesticides (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

L'invention concerne un artéfact de traitement de l'eau (10), qui comprend un corps composite compacté ou comprimé d'un mélange de particules de phosphate de calcium {Ca3(PO4)2} et de particules d'hypochlorite de calcium {Ca(OCI)2}.
PCT/IB2006/052158 2005-06-28 2006-06-28 Artefact de traitement de l'eau WO2007000747A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA200505223 2005-06-28
ZA2005/05223 2005-06-28

Publications (1)

Publication Number Publication Date
WO2007000747A1 true WO2007000747A1 (fr) 2007-01-04

Family

ID=37114480

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2006/052158 WO2007000747A1 (fr) 2005-06-28 2006-06-28 Artefact de traitement de l'eau

Country Status (1)

Country Link
WO (1) WO2007000747A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7597799B2 (en) 2007-08-15 2009-10-06 Ronald De Strulle Environmentally-neutral processing with condensed phase cryogenic fluids
WO2014033689A2 (fr) 2012-08-31 2014-03-06 Buzz Trading 197 (Proprietary) Limited Distributeurs

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5055183A (en) * 1989-04-28 1991-10-08 Control Chemicals (Proprietary) Limited Water treatment device
US5897770A (en) * 1997-10-23 1999-04-27 Plymouth Products, Inc. Center core cartridge feeder insert
WO1999029632A1 (fr) * 1997-12-08 1999-06-17 Ppg Industries Ohio, Inc. Composition a base d'hypochlorite de calcium
FR2830169A1 (fr) * 2001-09-28 2003-04-04 Dominique Mercier L'activite bactericide de l'hypochlorite de sodium ou de calcium est amelioree en lui ajoutant du phosphate

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5055183A (en) * 1989-04-28 1991-10-08 Control Chemicals (Proprietary) Limited Water treatment device
US5897770A (en) * 1997-10-23 1999-04-27 Plymouth Products, Inc. Center core cartridge feeder insert
WO1999029632A1 (fr) * 1997-12-08 1999-06-17 Ppg Industries Ohio, Inc. Composition a base d'hypochlorite de calcium
FR2830169A1 (fr) * 2001-09-28 2003-04-04 Dominique Mercier L'activite bactericide de l'hypochlorite de sodium ou de calcium est amelioree en lui ajoutant du phosphate

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7597799B2 (en) 2007-08-15 2009-10-06 Ronald De Strulle Environmentally-neutral processing with condensed phase cryogenic fluids
WO2014033689A2 (fr) 2012-08-31 2014-03-06 Buzz Trading 197 (Proprietary) Limited Distributeurs
WO2014033689A3 (fr) * 2012-08-31 2014-05-01 Buzz Trading 197 (Proprietary) Limited Distributeurs

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