EP1919832A1 - Treatment method of water containing humic substances and arsenic for the production of drinking water using inorganic polymers of aluminium and silica as coagulants - Google Patents
Treatment method of water containing humic substances and arsenic for the production of drinking water using inorganic polymers of aluminium and silica as coagulantsInfo
- 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- Withdrawn
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
Description
Claims
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 (en) | 2008-05-14 |
Family
ID=37420896
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06790226A Withdrawn EP1919832A1 (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 |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1919832A1 (en) |
EA (1) | EA200800568A1 (en) |
WO (1) | WO2007019588A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2874054C (en) | 2012-07-03 | 2020-04-28 | 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 (en) * | 2014-06-09 | 2015-12-16 | 三菱丽阳株式会社 | Processing method and device for waste water containing humic matter |
SE542816C2 (en) * | 2018-02-12 | 2020-07-14 | Ulmert David | Method to optimize the chemical precipitation process in water and sewage treatment plants |
CN113754028B (en) * | 2021-09-23 | 2022-10-25 | 中国环境科学研究院 | High-arsenic water body purification method based on particle size characteristics of arsenic-iron-organic matter |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2513619B1 (en) * | 1981-09-29 | 1985-06-28 | Ugine Kuhlmann | PROCESS FOR TREATING WATER WITH A SODIUM SILICATE SOLUTION ASSOCIATED WITH MINERAL COAGULANTS |
US4981675A (en) * | 1988-11-03 | 1991-01-01 | Handy Chemicals Ltd. | Polymeric basic aluminum silicate-sulphate |
WO2000050345A2 (en) * | 1999-02-25 | 2000-08-31 | Minox Corporation Usa | Mineral oxide liquid concentrates for water and wastewater treatment |
GB9926898D0 (en) * | 1999-11-12 | 2000-01-12 | School Of Earth & Environmenta | Calcium silicate sorbents |
YU35300A (en) * | 2000-06-06 | 2002-12-10 | Mileta PERIŠIĆ | Method treatment of water containing humic matter for drinking water, with enhanced coagulation by using inorganic polymers al and sio2 in the adjustable ph ranges |
-
2006
- 2006-07-20 EA EA200800568A patent/EA200800568A1/en unknown
- 2006-07-20 WO PCT/YU2006/000017 patent/WO2007019588A1/en active Application Filing
- 2006-07-20 EP EP06790226A patent/EP1919832A1/en not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
See references of WO2007019588A1 * |
Also Published As
Publication number | Publication date |
---|---|
EA200800568A1 (en) | 2008-10-30 |
WO2007019588A1 (en) | 2007-02-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA3007903C (en) | Recovery of phosphorus compounds from wastewater | |
Pernitsky et al. | Selection of alum and polyaluminum coagulants: principles and applications | |
CN102730885B (en) | Efficient flocculent precipitate purification method for polymetallic ore benefication wastewater | |
Gadekar et al. | Use of water treatment residuals for colour removal from real textile dye wastewater | |
US6120690A (en) | Clarification of water and wastewater | |
Qin et al. | Enhanced MBR by internal micro-electrolysis for degradation of anthraquinone dye wastewater | |
CN104085969A (en) | Method for preparing compound type multi-element flocculating agent aluminum ferric sulfate chloride polysilicate by utilizing waste acid | |
WO2010150424A1 (en) | Flue-gas desulfurization system using river water and method of removing humus | |
Kajjumba et al. | Application of cerium and lanthanum coagulants in wastewater treatment—A comparative assessment to magnesium, aluminum, and iron coagulants | |
CN110272158A (en) | A kind of high salt, high organic matter and high rigidity wastewater treatment method | |
CN108083483A (en) | A kind of papermaking or the decoloration treatment method of dyeing waste water | |
CN108821473A (en) | A kind of dyeing and printing sewage treatment process | |
CN106673255A (en) | Wastewater treatment method and wastewater treatment device | |
EP1919832A1 (en) | Treatment method of water containing humic substances and arsenic for the production of drinking water using inorganic polymers of aluminium and silica as coagulants | |
CN109264920A (en) | A kind of processing method of beneficiation wastewater zero-emission | |
CN107117738B (en) | Manganese ore area wastewater treatment method | |
Hao et al. | Creating coagulants through the combined use of ash and brine | |
Wang et al. | Synergy of phosphate recovery from sludge-incinerated ash and coagulant production by desalinated brine | |
CN105836783B (en) | A kind of high-concentration fluorine-containing waste water multistep treatment original position prepares high-purity CaF2Method | |
KR100313187B1 (en) | Rapid mixing coagulant system for treating wastewater and method thereof | |
CN111807552A (en) | Method for treating inorganic phosphorus-containing wastewater | |
King et al. | Recovery and reuse of coagulants from treatment of water and wastewater | |
CN107935269B (en) | Water treatment process capable of recycling coagulant and photocatalytic material and realizing zero discharge of muddy water | |
JP2002079004A (en) | Aggregation method | |
JPH0356104A (en) | High speed clarifier for polluted water |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20080223 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: RS |
|
17Q | First examination report despatched |
Effective date: 20091208 |
|
RAX | Requested extension states of the european patent have changed |
Extension state: RS Payment date: 20080223 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20130201 |