RU2001114498A - METHOD FOR CLEANING AND SOFTENING WATER - Google Patents

METHOD FOR CLEANING AND SOFTENING WATER

Info

Publication number
RU2001114498A
RU2001114498A RU2001114498/12A RU2001114498A RU2001114498A RU 2001114498 A RU2001114498 A RU 2001114498A RU 2001114498/12 A RU2001114498/12 A RU 2001114498/12A RU 2001114498 A RU2001114498 A RU 2001114498A RU 2001114498 A RU2001114498 A RU 2001114498A
Authority
RU
Russia
Prior art keywords
water
mixtures
treating
hydroxides
ions
Prior art date
Application number
RU2001114498/12A
Other languages
Russian (ru)
Inventor
Игорь Робертович Магунов (UA)
Игорь Робертович Магунов
Роберт Леонидович Магунов (UA)
Роберт Леонидович Магунов
Original Assignee
Игорь Робертович Магунов (UA)
Игорь Робертович Магунов
Роберт Леонидович Магунов (UA)
Роберт Леонидович Магунов
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 Игорь Робертович Магунов (UA), Игорь Робертович Магунов, Роберт Леонидович Магунов (UA), Роберт Леонидович Магунов filed Critical Игорь Робертович Магунов (UA)
Publication of RU2001114498A publication Critical patent/RU2001114498A/en

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/58Treatment of water, waste water, or sewage by removing specified dissolved compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/58Treatment of water, waste water, or sewage by removing specified dissolved compounds
    • C02F1/62Heavy metal compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F5/00Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
    • C02F5/02Softening water by precipitation of the hardness
    • C02F5/06Softening water by precipitation of the hardness using calcium compounds

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Removal Of Specific Substances (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Treatment Of Water By Ion Exchange (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Claims (2)

1. Способ очистки и умягчения воды от солей жесткости (Са, Mg, Sr) и примесей (Fe, Al, Cu, Zn, Cd, Ni, Со, Mn, Pb, Hg и других металлов и кремния), включающий предварительное подщелачивание воды, отличающийся тем, что процесс осуществляют в три стадии: на первой проводят подщелачивание воды оксидом кальция (или кальцинированной содой, или едким натром) до рН 8,5-10,5 для разложения бикарбонатных комплексных соединений щелочноземельных и других металлов и частичной очистке ее от временной жесткости, после отделения от осадка обработанную таким способом воду на второй стадии количественно очищают от солей жесткости и неорганических примесей путем обработки ее гидроксидами многовалентных металлов (Fe(III), Zr, Ti(IV), Sn(IV), РЗЭ, Al и др.) или их смесями, насыщенными ионами гидроксида ОН, и после отделения осадка от очищенной воды на третьей стадии осуществляют регенерацию гидроксидов многовалентных металлов или их смесей путем обработки осадков солянокислыми растворами при рН 2,0-5,0, отделения осадков от жидкой фазы, промывкой их и последующей обработкой гидроксидов многовалентных металлов или их смесей растворами едкого натрия или кальцинированной соды при рН 8,5-10,5 для насыщения поверхности гидроксидов или их смесей ионами.1. The method of purification and softening of water from hardness salts (Ca, Mg, Sr) and impurities (Fe, Al, Cu, Zn, Cd, Ni, Co, Mn, Pb, Hg and other metals and silicon), including preliminary alkalization of water , characterized in that the process is carried out in three stages: in the first, water is alkalized with calcium oxide (or soda ash or sodium hydroxide) to a pH of 8.5-10.5 to decompose bicarbonate complex compounds of alkaline earth and other metals and partially purify it from temporary stiffness, after separation from the sediment, water treated in this way per volt The second stage is quantitatively purified from hardness salts and inorganic impurities by treating it with hydroxides of polyvalent metals (Fe (III), Zr, Ti (IV), Sn (IV), REE, Al, etc.) or their mixtures saturated with OH hydroxide ions, and after separating the precipitate from purified water in the third stage, polyvalent metal hydroxides or mixtures thereof are regenerated by treating the precipitates with hydrochloric acid solutions at pH 2.0-5.0, separating the precipitates from the liquid phase, washing them and then treating the multivalent metal hydroxides or mixtures thereof sol oram sodium hydroxide or soda ash at pH 8.5-10.5 to saturate the surface of hydroxides or mixtures thereof with ions. 2. Способ по п.1, отличающийся тем, что очистку и умягчение воды от солей жесткости и примесей осуществляют гидроксидами многовалентных металлов или их смесями, которые для насыщения ионами OH- предварительно обработаны растворами едкого натра или кальцинированной соды при рН 8,5-10,5.2. The method according to claim 1, characterized in that the purification and softening of water from hardness salts and impurities is carried out with multivalent metal hydroxides or their mixtures, which are pre-treated with solutions of caustic soda or soda ash at pH 8.5-10 for saturation with OH ions ,5.
RU2001114498/12A 1998-10-30 1999-10-29 METHOD FOR CLEANING AND SOFTENING WATER RU2001114498A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
UA98105773A UA47470C2 (en) 1998-10-30 1998-10-30 Method of purification and softening of water
UA98105773 1998-10-30

Publications (1)

Publication Number Publication Date
RU2001114498A true RU2001114498A (en) 2003-05-20

Family

ID=21689306

Family Applications (1)

Application Number Title Priority Date Filing Date
RU2001114498/12A RU2001114498A (en) 1998-10-30 1999-10-29 METHOD FOR CLEANING AND SOFTENING WATER

Country Status (4)

Country Link
AU (1) AU1703100A (en)
RU (1) RU2001114498A (en)
UA (1) UA47470C2 (en)
WO (1) WO2000026147A1 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1571847A (en) * 1974-01-02 1980-07-23 Systems Eng & Mfg Waste water treatment
NL8303557A (en) * 1983-10-17 1985-05-17 Dhv Raadgevend Ing METHOD FOR THE REMOVAL OF HEAVY METALS FROM WASTE WATER.
DE3808088A1 (en) * 1987-07-09 1989-01-19 Degussa Process for separating off heavy metal ions from industrial waste waters
RU2010013C1 (en) * 1991-08-02 1994-03-30 Научно-производственное объединение "Радиевый институт им.В.Г.Хлопина" Method of acid sewage treatment from heavy metal ions
RU2060962C1 (en) * 1992-01-09 1996-05-27 Российский Федеральный Ядерный Центр - Всероссийский Научно-Исследовательский Институт Экспериментальной Физики Sewage purification from heavy metals ions
SE504789C2 (en) * 1994-02-21 1997-04-28 Kemira Kemi Ab Procedure for heavy metal elimination from backwater systems in the paper and pulp industry

Also Published As

Publication number Publication date
AU1703100A (en) 2000-05-22
UA47470C2 (en) 2002-07-15
WO2000026147A1 (en) 2000-05-11
WO2000026147A8 (en) 2000-08-24

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Legal Events

Date Code Title Description
FA94 Acknowledgement of application withdrawn (non-payment of fees)

Effective date: 19991029