EP1919832A1 - Behandlungsverfahren für huminstoffe und arsen enthaltendes wasser zur erzeugung von trinkwasser unter verwendung von anorganischen polymeren von aluminium und siliciumdioxid als koagulantien - Google Patents

Behandlungsverfahren für huminstoffe und arsen enthaltendes wasser zur erzeugung von trinkwasser unter verwendung von anorganischen polymeren von aluminium und siliciumdioxid als koagulantien

Info

Publication number
EP1919832A1
EP1919832A1 EP06790226A EP06790226A EP1919832A1 EP 1919832 A1 EP1919832 A1 EP 1919832A1 EP 06790226 A EP06790226 A EP 06790226A EP 06790226 A EP06790226 A EP 06790226A EP 1919832 A1 EP1919832 A1 EP 1919832A1
Authority
EP
European Patent Office
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.)
Withdrawn
Application number
EP06790226A
Other languages
English (en)
French (fr)
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
Publication of EP1919832A1 publication Critical patent/EP1919832A1/de
Withdrawn legal-status Critical Current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)
EP06790226A 2005-08-08 2006-07-20 Behandlungsverfahren für huminstoffe und arsen enthaltendes wasser zur erzeugung von trinkwasser unter verwendung von anorganischen polymeren von aluminium und siliciumdioxid als koagulantien Withdrawn EP1919832A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
YUP060605 2005-08-08
PCT/YU2006/000017 WO2007019588A1 (en) 2005-08-08 2006-07-20 Treatment method of water containing humic substances and arsenic for the production of drinking water using inorganic polymers of aluminium and silica as coagulants

Publications (1)

Publication Number Publication Date
EP1919832A1 true EP1919832A1 (de) 2008-05-14

Family

ID=37420896

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06790226A Withdrawn EP1919832A1 (de) 2005-08-08 2006-07-20 Behandlungsverfahren für huminstoffe und arsen enthaltendes wasser zur erzeugung von trinkwasser unter verwendung von anorganischen polymeren von aluminium und siliciumdioxid als koagulantien

Country Status (3)

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

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2870109A4 (de) 2012-07-03 2016-03-23 Veolia Water Solutions & Tech Verfahren zur reinigung einer halbmetallkontaminierten wasserlösung zur reduktion der konzentration von verunreinigungen darin für sicheren menschlichen konsum durch fällung ohne 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
SE542816C2 (sv) * 2018-02-12 2020-07-14 Ulmert David Metod att optimera den kemiska fällningsprocessen i vatten- och avloppsreningsverk
CN113754028B (zh) * 2021-09-23 2022-10-25 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

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2513619B1 (fr) * 1981-09-29 1985-06-28 Ugine Kuhlmann Procede de traitement des eaux par une solution de silicate de sodium associee a des coagulants mineraux
US4981675A (en) * 1988-11-03 1991-01-01 Handy Chemicals Ltd. Polymeric basic aluminum silicate-sulphate
GB9926898D0 (en) * 1999-11-12 2000-01-12 School Of Earth & Environmenta Calcium silicate sorbents
JP2004502621A (ja) * 1999-12-02 2004-01-29 ミノックス　コーポレイション　ユーエスエイ 水及び廃水処理のための無機酸化物液状濃縮物
YU35300A (sh) * 2000-06-06 2002-12-10 Mileta PERIŠIĆ POSTUPAK ZA PREČIŠĆAVANJE VODE SA HUMINSKIM MATERIJAMA U VODU ZA PIĆE, SA UNAPREĐENJEM FAZE KOAGULACIJE PRIMENOM NEORGANSKIH POLIMERA AL I SiO2 U KONTROLISANOJ PH OBLASTI

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007019588A1 *

Also Published As

Publication number Publication date
WO2007019588A1 (en) 2007-02-15
EA200800568A1 (ru) 2008-10-30

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