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WO2007019588A1 - Procede de traitement de substances humiques contenant de l'eau et de l'arsenic pour la production d'eau potable au moyen de polymeres inorganiques d'aluminium et de silice en tant que coagulants - Google Patents

Procede de traitement de substances humiques contenant de l'eau et de l'arsenic pour la production d'eau potable au moyen de polymeres inorganiques d'aluminium et de silice en tant que coagulants Download PDF

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Publication number
WO2007019588A1
WO2007019588A1 PCT/YU2006/000017 YU2006000017W WO2007019588A1 WO 2007019588 A1 WO2007019588 A1 WO 2007019588A1 YU 2006000017 W YU2006000017 W YU 2006000017W WO 2007019588 A1 WO2007019588 A1 WO 2007019588A1
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WO
WIPO (PCT)
Prior art keywords
water
arsenic
purification
content
humic
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/YU2006/000017
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English (en)
Inventor
Mileta Perisic
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP06790226A priority Critical patent/EP1919832A1/fr
Priority to EA200800568A priority patent/EA200800568A1/ru
Publication of WO2007019588A1 publication Critical patent/WO2007019588A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
    • 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
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5209—Regulation methods for flocculation or precipitation
    • 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
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
    • C02F1/545—Silicon compounds
    • 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
    • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/103—Arsenic compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/06—Controlling or monitoring parameters in water treatment pH

Definitions

  • This innovation belongs to the field of water treatment, closer to the field of drinking water treatment, and it refers to the method for humic substances removal from raw waters which is the most wide spread organic pollution of natural waters on broad area, as well as arsenic which appears in surface and ground water as primary pollution or together with humic substances.
  • Coagulation and separation processes as one of the more representing methods for removal of humic matter from natural water are realized today by using different coagulants with partial success.
  • the main problems are in the domain of treatment of soft and hold waters with humic matter which are very vide spread.
  • New enhancement of humic substances removal from raw water with the most unpleasant characteristics and supplying drinking water quality standard was a part of problem which must be solved in next phase.
  • Other segment of this problem is concerned with enhancement effects of arsenic removal from raw water, especially in the conditions of simultaneous high content of humic substances and arsenic. This problem for a long time exists in searching of solution of purification of raw water for Zrenjanin town.
  • Dosage of polymers Al and activated SiO 2 is determined for concrete purification conditions. Dose of inorganic polymers is determined on the basis established correlation of uv- extinction, or KMnO 4 consumption, and dose of Al (Fig. 9), and dose Of SiO 2 from established ratio of these two polymers. Doses of coagulants depending on the type of water vary in range, for Al polymer from 2 to 25 mg/dm 3 Al 2 O 3 and activated SiO 2 from 0.5 to over 15.0 mg/dm 3 . Inorganic polymer Al and activated SiO 2 are added to raw water by previously adjusted pH value: for water with low alkalinity (CaCO 3 concentration lower than 100 mg/dm 3 ) to app.
  • Al and Si are in instable states at dosing that are quickly transformed with formation of stable complexes. According to literature data (Stumm & Morgan, Aquatic Chemistry, 1970) created alumosilicates have very small solubility 10 "8 M Al(OtTb at changeable concentrations Of H 4 SiO 4 from 10 "10 - 10 "5 and with minimal solubility of Al from l(r 9 to l(r 10 at pH 6.0.
  • THM precursors Trichalomethanes, sum: CHCl 3 , CHCl 2 Br, CHClBr 2 , CHBr 3 ) - in purified water, often to the level lower than MCL (maximum permissible concentration) in drinking water (PTHM is reduced to around 90%,
  • Process of purification of raw water by coagulation with separation flock on the installation has phases given in the scheme 1: Adjustment of the pH (if it is necessary), dosing of the coagulants (Al polymer and activated SiC>2) with mixing phases (rapid and slow mixing) and finally sedimentation and filtration. Adjustment of the pH before phase of coagulation (if it is necessary) is realized by dozing of mineral acids or by filtration of some part of the water flow
  • the method permits other purification schemes. This is related to existing installations, for example these with coagulation/direct filtration. In this case effects of the process are dependant on concentration of humic matter, or coagulant doses, because the filter run is dependant on these parameters.
  • drinking water quality standard can be provided as it is shown by examples 1 and 2. Even in the phase of coagulation and sedimentation (in decanted water) under new conditions that are defined by this optimization, drinking water quality standards are provided and it is shown by examples 1 and 2 and Fig. 2, 3, 4 and 5.
  • Example 1 Results of laboratory investigations purification effects of ground water in Kikinda.
  • Example 3 Purification of raw water of small ionic strength with increased content of humic matter unde ⁇ - extremely low temperatures at Kopaonik was carried out successfully according to PCT/YUOl/000012 in pH range 5.5 - 6.5. Under conditions of changed doses of coagulants with the increase of SiO 2 part same effects are successfully obtained without pH adjustment.
  • Raw water was purified at 3 0 C at the installation with the same temperature during experiments.
  • SiO 2 are obtained with pH values 5.5 - 6.5, Al 2 O 3 doses of 2 - 25 mgAl 2 O 3 /cm 3 and SiO 2 doses from 1.0 - 12.5 mgSiO 2 /cm 3 .
  • Ratio AI 2 O 3 : SiO 2 2 ; 1.2 provides almost quantitative binding Al and Si in macro complex and by this minimal residual of Al in purified water.
  • Adjustment pH by strong acid cationic resin enables decrease in excessive Na content and in ionic strength, while with application of Al polymer SO 4 2" content increase is excluded, which is present in the case with application Al sulfate, so by this procedure multiplied effects on drinking water quality enhancement are obtained, decrease in organic matter content and water mineralization.
  • Example 4 Removal of arsenic with small organic matter content and turbidity, the Jasenica river as water source for Topola.
  • the Jasenica river springs from Rudnik mountain, which is known for lead and zinc mine. Water of the river Jasenica is with increased As content of 0.025 - 0.060 mgAs/dm 3 . Since raw water of the Jasenica is transparent with low organic matter content removal of As by classical coagulation would demand dosing of suspensions that would enable this process.
  • Dosing of Al polymer and activated SiO 2 in concentration that give weight ratio 2 : 1,2 provides effective flock formation with high arsenic removal effect.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)
  • Removal Of Specific Substances (AREA)

Abstract

L'invention concerne l'élimination de substances humiques et d'arsenic présents dans les eaux naturelles au moyen de polymères inorganiques d'aluminium et de silice, plus particulièrement dans eaux non traitées contenant un taux très élevé de matières humiques et d'arsenic et dans des conditions de purification éminemment négatives, telles qu'une force ionique élevée et des conditions thermiques nettement négatives. Les effets de l'élimination des matières humiques et de l'arsenic, obtenus grâce à la technique novatrice et améliorée de purification selon l'invention, produisent une eau de qualité potable, y compris dans la phase de coagulation et de séparation de flocons, dans des conditions présentant un taux très élevé de matières humiques qui sont celles des eaux non traitées du type Zrenjanin, avec une consommation de KMnO4 dépassant 50 mg/dm3 et un taux total de As dépassant 0,100 mg/dm3. La présence d'un taux élevé de différentes formes d'arsenic dans les eaux non traitées, alliée ou non à un taux élevé de matières humiques, exigent leur élimination par les moyens techniques, économiques et écologiques les plus appropriés. L'application d'une technique novatrice permet d'obtenir les meilleures conditions pour l'élimination simultanée des deux types de pollution des eaux non traitées. Le procédé selon l'invention consiste à optimiser les conditions de purification en neutralisant la charge de molécules humiques, à fournir des doses optimales de pH et de polymère inorganique et de leurs ratios dans des conditions énergétiques appropriées pour la formation de flocons, puis en appliquant différents processus de séparation, qu'il s'agisse de schémas de séparation classiques (sédimentation ou flottation par filtration sur sable) ou de processus de séparation par membrane.
PCT/YU2006/000017 2005-08-08 2006-07-20 Procede de traitement de substances humiques contenant de l'eau et de l'arsenic pour la production d'eau potable au moyen de polymeres inorganiques d'aluminium et de silice en tant que coagulants Ceased WO2007019588A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP06790226A EP1919832A1 (fr) 2005-08-08 2006-07-20 Procede de traitement de substances humiques contenant de l'eau et de l'arsenic pour la production d'eau potable au moyen de polymeres inorganiques d'aluminium et de silice en tant que coagulants
EA200800568A EA200800568A1 (ru) 2005-08-08 2006-07-20 Способ обработки воды, содержащей гумусовые вещества и мышьяк, для получения питьевой воды с использованием в качестве коагулянтов неорганических полимеров алюминия и кремнезема

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
YUP060605 2005-08-08
YUP-2005/0606 2005-08-08

Publications (1)

Publication Number Publication Date
WO2007019588A1 true WO2007019588A1 (fr) 2007-02-15

Family

ID=37420896

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/YU2006/000017 Ceased WO2007019588A1 (fr) 2005-08-08 2006-07-20 Procede de traitement de substances humiques contenant de l'eau et de l'arsenic pour la production d'eau potable au moyen de polymeres inorganiques d'aluminium et de silice en tant que coagulants

Country Status (3)

Country Link
EP (1) EP1919832A1 (fr)
EA (1) EA200800568A1 (fr)
WO (1) WO2007019588A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105152387A (zh) * 2014-06-09 2015-12-16 三菱丽阳株式会社 含腐殖物污水的处理方法、及含腐殖物污水的处理装置
US9388061B2 (en) 2012-07-03 2016-07-12 Veolia Water Solutions & Technologies Support Metalloid contaminated water solution purification process for safe human consumption-rated reduction of contaminant concentration therein, by precipitation without oxidation
CN111712467A (zh) * 2018-02-12 2020-09-25 大卫·乌尔默特 优化水处理厂和废水处理厂中的化学沉淀过程的方法
CN113754028A (zh) * 2021-09-23 2021-12-07 中国环境科学研究院 一种基于砷-铁-有机质粒径特征的高砷水体净化方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2513619A1 (fr) * 1981-09-29 1983-04-01 Ugine Kuhlmann Procede de traitement des eaux par une solution de silicate de sodium associee a des coagulants mineraux
EP0372715A1 (fr) * 1988-11-03 1990-06-13 Handy Chemicals Limited Sulfate d'aluminosilicate basique polymère
WO2000050345A2 (fr) * 1999-02-25 2000-08-31 Minox Corporation Usa Concentres d'oxydes mineraux liquides destines au traitement de l'eau et des eaux usees
GB2356194A (en) * 1999-11-12 2001-05-16 Univ Greenwich Silicate/aluminate materials
WO2001094265A1 (fr) * 2000-06-06 2001-12-13 Mileta Perisic Procede de traitement d'eau contenant des matieres humiques destine a la production d'eau potable avec etape de coagulation amelioree a l'aide de polymeres inorganiques d'al et de sio2 active

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2513619A1 (fr) * 1981-09-29 1983-04-01 Ugine Kuhlmann Procede de traitement des eaux par une solution de silicate de sodium associee a des coagulants mineraux
EP0372715A1 (fr) * 1988-11-03 1990-06-13 Handy Chemicals Limited Sulfate d'aluminosilicate basique polymère
WO2000050345A2 (fr) * 1999-02-25 2000-08-31 Minox Corporation Usa Concentres d'oxydes mineraux liquides destines au traitement de l'eau et des eaux usees
GB2356194A (en) * 1999-11-12 2001-05-16 Univ Greenwich Silicate/aluminate materials
WO2001094265A1 (fr) * 2000-06-06 2001-12-13 Mileta Perisic Procede de traitement d'eau contenant des matieres humiques destine a la production d'eau potable avec etape de coagulation amelioree a l'aide de polymeres inorganiques d'al et de sio2 active

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DRIKAS, M.; MORRAN, J.Y.; COOK, D.; BURSILL, D.B.: "Operating the MIEXO Process with Microfiltration or Coagulation", PROCEEDINGS OF THE AMERICAN WATER WORKS ASSOCIATION WATER QUALITY TECHNOLOGY CONFERENCE, 2 November 2003 (2003-11-02), pages 11
SINGER, P.C.; BILYK, K.: "Enhanced Coagulation using a Magnetic Ion Exchange Resin", WATER RESEARCH, vol. 36, no. 16, 2002, pages 4009 - 4022

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9388061B2 (en) 2012-07-03 2016-07-12 Veolia Water Solutions & Technologies Support Metalloid contaminated water solution purification process for safe human consumption-rated reduction of contaminant concentration therein, by precipitation without oxidation
CN105152387A (zh) * 2014-06-09 2015-12-16 三菱丽阳株式会社 含腐殖物污水的处理方法、及含腐殖物污水的处理装置
CN111712467A (zh) * 2018-02-12 2020-09-25 大卫·乌尔默特 优化水处理厂和废水处理厂中的化学沉淀过程的方法
CN113754028A (zh) * 2021-09-23 2021-12-07 中国环境科学研究院 一种基于砷-铁-有机质粒径特征的高砷水体净化方法

Also Published As

Publication number Publication date
EA200800568A1 (ru) 2008-10-30
EP1919832A1 (fr) 2008-05-14

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