CN104230052A - Water treatment method - Google Patents
Water treatment method Download PDFInfo
- Publication number
- CN104230052A CN104230052A CN201410451947.4A CN201410451947A CN104230052A CN 104230052 A CN104230052 A CN 104230052A CN 201410451947 A CN201410451947 A CN 201410451947A CN 104230052 A CN104230052 A CN 104230052A
- Authority
- CN
- China
- Prior art keywords
- polluted water
- water
- value
- water treatment
- carbonate
- 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.)
- Pending
Links
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention relates to the field of water treatment, and particularly relates to a water treatment method. The water treatment method comprises the following steps: collecting polluted water containing pollutants, wherein the polluted water at least comprises calcium, magnesium, barium, strontium, copper, zinc, iron, manganese, aluminum, silicon dioxide, TOC, oil, grease, TDS and TSS; obtaining collected components and content of pollutants in the polluted water; adding at least one of carbonate or bicarbonate to the polluted water, wherein the amount of the carbonate or bicarbonate is at least equal to that of the pollutants; adjusting the pH value of the polluted water to be between 10.5 and 14; and separating solid substances from the polluted water. By providing the water treatment method, most of pollutants can be removed, and do not deposit in the water treatment process.
Description
Technical field
The present invention relates to water treatment field, particularly relate to a kind of method of water treatment.
Background technology
In water treatment field, need to process the pollutent in water, these pollutents mainly comprise calcium, magnesium, barium, strontium, copper, zinc, iron, manganese, aluminium, silicon-dioxide, TOC (total organic carbon), oil, grease, TDS (total dissolved solidss), TSS (total suspended solid) etc.
In correlation technique, the normal ion-exchange techniques that adopts is removed the pollutent in water, water treatment procedure needs to use sodium-chlor (NaCl) solution to carry out reducing/regenerating, these methods usually effectively can exchange Ca and Mg and part exchanges Ba and Sr, but, in water, there is iron, manganese, oil, fat, and/or in organic situation, often cause serious scale.
Summary of the invention
The object of the present invention is to provide a kind of method of water treatment, to solve the above problems.
In an embodiment of the present invention, provide a kind of method of water treatment, comprising:
Collect the polluted water containing pollutent; Wherein, the one in calcium, magnesium, barium, strontium, copper, zinc, iron, manganese, aluminium, silicon-dioxide, TOC, oil, grease, TDS and TSS is at least comprised in polluted water;
Obtain component and the content of the pollution water pollutant collected;
Add at least one carbonate or supercarbonate to polluted water in; Wherein, the amount of pollutent that at least equals of the amount of carbonate or supercarbonate;
Regulate between the pH value to 10.5 of polluted water to 14;
Solid matter is isolated from polluted water.
Further, regulate between the pH value to 10.5 of polluted water to 14, comprising: by least one in sodium hydroxide and potassium hydroxide, the pH value of polluted water is adjusted to 10.5 to 14.
Further, regulate between the pH value to 10.5 of polluted water to 14, also comprise: by least one in carbonic acid gas and carbon monoxide, the pH value of polluted water is adjusted to 10.5 to 14.
Further, regulate between the pH value to 10.5 of polluted water to 14, also comprise: by least one in lime and SODA ASH LIGHT 99.2, the pH value of polluted water is adjusted to 10.5 to 14.
Further, the method also comprises: add and help solidifying chemical agent in polluted water, and the complex polyelectrolyte particle adding plus or minus is in water pollutions water, in order to form the solid sediment comprising pollutent and carbonate or oxyhydroxide.
Further, solidifying chemical agent is helped to be one in iron(ic) chloride, alum, ferric sulfate or useless caustic soda.
Further, regulate between the pH value to 12 of polluted water to 14.
Compared with prior art the invention has the beneficial effects as follows: by add at least one carbonate or supercarbonate to polluted water in, and regulate between the pH value to 10.5 of polluted water to 14, not only can remove most of pollutent, and in water treatment procedure non flouling behaviour.
Accompanying drawing explanation
Fig. 1 is the schema of the method for water treatment of the present invention.
Embodiment
Also by reference to the accompanying drawings the present invention is described in further detail below by specific embodiment.
Shown in ginseng Fig. 1, Fig. 1 is the schema of the method for water treatment of the present invention.
Present embodiments provide a kind of method of water treatment, comprising:
Step S101, collects the polluted water containing pollutent; Wherein, the one in calcium, magnesium, barium, strontium, copper, zinc, iron, manganese, aluminium, silicon-dioxide, TOC, oil, grease, TDS and TSS is at least comprised in polluted water.
Step S103, obtains component and the content of the pollution water pollutant collected.
Step S105, add at least one carbonate or supercarbonate to polluted water in; Wherein, the amount of pollutent that at least equals of the amount of carbonate or supercarbonate.
Step S107, regulates between the pH value to 10.5 of polluted water to 14.
Step S109, isolates solid matter from polluted water.
The method that the present embodiment provides, by add at least one carbonate or supercarbonate to polluted water in, and regulate between the pH value to 10.5 of polluted water to 14, not only can remove most of pollutent, and in water treatment procedure non flouling behaviour.
Utilizing reverse osmosis membrane technology, electrodialytic membranes technology, or in the ordinary method of electrodeionization membrane technique, preprocessing process removing indissoluble material (as calcium, magnesium, silicon, barium, strontium etc.) be very important, otherwise, calcium, magnesium, silicon, can depositing in a large number at processing unit of barium or strontium, has a strong impact on the efficiency of water treatment.There is not the problem of this respect in the method for the water treatment that the present embodiment provides, and can be effective as a preprocessing process.
In addition, in some water treatment systems, pre-treatment water outlet needs lower pH (being generally less than 5), and to reduce due to calcium, magnesium, the existence of strontium and/or barium and cause fouling, the method that the present embodiment passes through does not exist the problem of this respect.
In the present embodiment, regulate between the pH value to 10.5 of polluted water to 14, comprising: by least one in sodium hydroxide and potassium hydroxide, the pH value of polluted water is adjusted to 10.5 to 14.The present embodiment utilizes sodium hydroxide or potassium hydroxide to regulate pH value, and method is simple, and cost is lower.
In the present embodiment, regulate between the pH value to 10.5 of polluted water to 14, also comprise: by least one in carbonic acid gas and carbon monoxide, the pH value of polluted water is adjusted to 10.5 to 14.The present embodiment utilizes carbonic acid gas and/or the carbon monoxide in basic solution, and create bicarbonate radical or carbanion by chemical reaction, simple to operation, cost is lower.
In the present embodiment, regulate between the pH value to 10.5 of polluted water to 14, also comprise: by least one in lime and SODA ASH LIGHT 99.2, the pH value of polluted water is adjusted to 10.5 to 14.The present embodiment adopt lime and or SODA ASH LIGHT 99.2 pH value is regulated, be different from correlation technique and at high temperature could must effectively carry out hot lime treatment process, it can carry out at normal temperature temperature, and at high temperature speed of response can be faster, treatment condition are simple, save energy consumption.
In addition, in conventional lime process, hot lime treatment or lime-soda ash treating processes in, be sometimes difficult to guarantee lime (calcium oxide) or white lime (Ca (OH)
2) effectively entering solution, the water treatment method that the present embodiment provides does not have the problem of this respect.
In addition, conventional lime process, in hot lime treatment and lime-soda ash treating processes, use softening film, and/or use the technique of electrodialysis film process, the water after process is always containing a certain amount of calcium, and magnesium, barium, strontium, and other metallic impurity.The water treatment method that the present embodiment provides effectively can remove these impurity to negligible level.
In the present embodiment, the method also comprises: add and help solidifying chemical agent in polluted water, and the polymer electrolyte adding plus or minus is in water pollutions water, in order to form the solid sediment comprising pollutent and carbonate or oxyhydroxide.Add in the present embodiment help solidifying chemical agent unlike based in film treatment process when in fouling help solidifying chemical agent (as alum or molysite or polymkeric substance) excessive time can block, the water treatment method of the present embodiment can help solidifying chemical agent to deposit to carry out in case excessive.
In the present embodiment, solidifying chemical agent is helped to be one in iron(ic) chloride, alum, ferric sulfate or useless caustic soda.
In the present embodiment, regulate between the pH value to 12 of polluted water to 14.
Further more detailed description is done to the present invention below:
The method that the present embodiment provides can process highly polluted surface water effectively, as well water, waste water and processing wastewater effectively can remove and/or reduce some inorganic pollutant, as calcium (Ca), magnesium (Mg), barium (Ba), strontium (Sr), iron (ferrous iron or ferric iron), manganese (Mn), zinc (Zn) and silicon oxide (silicon-dioxide), and other pollutents, such as oil, grease, total organic carbon (TOC), biochemical oxygen demand (BOD) (BOD), total suspended solid (TSS), and colloid.These pollutents in river, can exist in lake and ocean, or are present in industry and municipal wastewater.
Positively charged ion as calcium, magnesium, strontium, barium, with negatively charged ion, as carbonate, bicarbonate radical or sulfate radical in conjunction with time, equipment scaling equipment can be caused, as cooling tower, boiler, hot water heater or heat exchanging apparatus.In the water treatment procedure of advanced person, as reverse osmosis, electrodeionization or electrodialysis, the existence of these materials may cause incrustation or fouling, because this increasing the cost of maintenance of the equipment.
In most of the cases, the existence of the chemical (as alum, iron(ic) chloride, ferric sulfate, positively charged ion or anionic polymer, and the chemical substance of polyelectrolyte) of coagulation promoter by raising condensation process so that sedimentation faster.
Carbonate and supercarbonate can adopt naturally occurring chemical compound, as unslaked lime (calcium oxide), and white lime (Ca (OH)), or SODA ASH LIGHT 99.2 (sodium carbonate).Also the reaction carrying out carbanion with carbonic acid gas and/or carbon monoxide and alkaline solution can be considered.
After having reacted, the solid sediment of precipitation by as sedimentation, can be clarified, filter, and/or the membrane sepn removing of advanced person.Some of them chemical equation is as follows:
(1)CaCl2+Na2CO3＝CaCO3+2?NaCl
(2)CaCl2+K2CO3＝CaCO3+2?KCl
(3)BaCl2+Na2SO4＝BaSO4+2?NaCl
(4)SrCl2+Na2S04＝SrSO4+2?NaCl
(5)CO2+2NaOH＝Na2CO3+H2O
(6)2CO+O2＝2CO2
(7)Fe(+3)+(OH)＝Fe(OH)3
(8)Al(+3)+(OH)＝Al(OH)3
In the present embodiment, the basicity of carbonate or supercarbonate preferably 20%, thus provide and react completely, and accelerated reaction process.
In the present embodiment, carbanion also can be produced by pure carbonic acid gas or CO 2 waste gas or waste water or reaction of carbon monoxide.
In the present embodiment, required pH value range is preferably 12 ~ 14.
Polyelectrolyte in the present embodiment is the ionogen group that the repeating unit of polymkeric substance is born, and is similar to two ionogen (salt) and polymkeric substance (high-molecular weight compounds).Many biomolecules are polyelectrolyte.Such as, polypeptide and DNA.
In the present embodiment, solid settlement is allowed to be commonly called sedimentation or clarification.Heavier solid sediment, the mainly throw out of carbonate or supercarbonate and hydroxide precipitate, also have some suspended substances, as oil, grease, and light organism, silicon-dioxide and colloidalmaterial.
Basicity in the present embodiment, pH adjusting agent, flocculation agent and ionogen (reagent), can add together, or add within the very short time.
Be understandable that, the present invention can take many forms and embodiment.Therefore, some modification can not depart from its spirit or the spirit and scope of the present invention by aforementioned.Such as, ozone or coagulation process is used, to improve oxidising process
Can believe that the present embodiment and advantage thereof will be intelligible from description above, obviously, under condition, please can produce multiple different change what do not depart from the spirit and scope of the present invention or sacrifice its all material advantage.
A series of detailed description listed is above only illustrating for feasibility embodiment of the present invention; they are also not used to limit the scope of the invention, all do not depart from the skill of the present invention equivalent implementations done of spirit or change all should be included within protection scope of the present invention.
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present invention or essential characteristic, the present invention can be realized in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present invention is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the present invention.Any Reference numeral in claim should be considered as the claim involved by limiting.
In addition, be to be understood that, although this specification sheets is described according to embodiment, but not each embodiment only comprises an independently technical scheme, this narrating mode of specification sheets is only for clarity sake, those skilled in the art should by specification sheets integrally, and the technical scheme in each embodiment also through appropriately combined, can form other embodiments that it will be appreciated by those skilled in the art that.
Claims (7)
1. a method for water treatment, is characterized in that, comprising:
Collect the polluted water containing pollutent; Wherein, the one in calcium, magnesium, barium, strontium, copper, zinc, iron, manganese, aluminium, silicon-dioxide, TOC, oil, grease, TDS and TSS is at least comprised in described polluted water; The component of pollutent described in the described polluted water that acquisition is collected and content;
Add at least one carbonate or supercarbonate in described polluted water; Wherein, the amount of described carbonate or supercarbonate at least equals the amount of described pollutent;
Regulate between the pH value to 10.5 of described polluted water to 14;
Solid matter is isolated from described polluted water.
2. the method for water treatment according to claim 1, is characterized in that, regulates between the pH value to 10.5 of described polluted water to 14, comprising: by least one in sodium hydroxide and potassium hydroxide, the pH value of described polluted water is adjusted to 10.5 to 14.
3. the method for water treatment according to claim 1, is characterized in that, regulates between the pH value to 10.5 of described polluted water to 14, also comprises: by least one in carbonic acid gas and carbon monoxide, the pH value of described polluted water is adjusted to 10.5 to 14.
4. the method for water treatment according to claim 1, is characterized in that, regulates between the pH value to 10.5 of described polluted water to 14, also comprises: by least one in lime and SODA ASH LIGHT 99.2, the pH value of described polluted water is adjusted to 10.5 to 14.
5. according to the method for water treatment as claimed in claim 1, it is characterized in that, also comprise: add and help solidifying chemical agent in described polluted water, and the complex polyelectrolyte particle adding plus or minus is in described polluted water, in order to form the solid sediment comprising described pollutent and carbonate or oxyhydroxide.
6. the method for water treatment according to claim 1, is characterized in that, described in help solidifying chemical agent to be one in iron(ic) chloride, alum, ferric sulfate or useless caustic soda.
7. the method for water treatment according to claim 1, is characterized in that, regulates between the pH value to 12 of described polluted water to 14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410451947.4A CN104230052A (en) | 2014-09-06 | 2014-09-06 | Water treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410451947.4A CN104230052A (en) | 2014-09-06 | 2014-09-06 | Water treatment method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104230052A true CN104230052A (en) | 2014-12-24 |
Family
ID=52219073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410451947.4A Pending CN104230052A (en) | 2014-09-06 | 2014-09-06 | Water treatment method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104230052A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101215059A (en) * | 2008-01-11 | 2008-07-09 | 清华大学 | Alkaline chemical deposition treatment method for overproof metal pollution in water |
-
2014
- 2014-09-06 CN CN201410451947.4A patent/CN104230052A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101215059A (en) * | 2008-01-11 | 2008-07-09 | 清华大学 | Alkaline chemical deposition treatment method for overproof metal pollution in water |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104355473B (en) | A kind of method using electrodialytic technique to carry out power plant desulfurization waste water desalination zero discharge treatment | |
| JP6216716B2 (en) | Industrial water purification and desalination | |
| US9056784B2 (en) | High efficiency water-softening process | |
| CN106430786B (en) | Desulfurization wastewater treatment method and device | |
| US8147696B1 (en) | High-efficiency water-softening process | |
| CN106865920B (en) | Advanced treatment method and recycling process of acid wastewater containing heavy metal ions | |
| AU2008331941B2 (en) | Water treatment process for oilfield produced water | |
| CA2659451C (en) | Desalination methods and systems that include carbonate compound precipitation | |
| CN101456635B (en) | Process and system for treating electric power plant waste water | |
| CN101928088B (en) | Method for treating reverse osmosis concentrated water of petrochemical enterprises | |
| Zeng et al. | Removal of silica from heavy oil wastewater to be reused in a boiler by combining magnesium and zinc compounds with coagulation | |
| JP2012523316A (en) | Method and system for reducing scaling in aqueous solution purification | |
| US11560318B2 (en) | Facile, low-energy routes for the production of hydrated calcium and magnesium salts from alkaline industrial wastes | |
| WO2013091129A1 (en) | Membrane filtration process for industrial process water treatment and recovery | |
| Haidari et al. | High silica concentration in RO concentrate | |
| Chuang et al. | Colloidal silica removal in coagulation processes for wastewater reuse in a high-tech industrial park | |
| CN104230052A (en) | Water treatment method | |
| Amjad et al. | The role of water chemistry on preventing silica fouling in industrial water systems | |
| Smith et al. | Wastewater treatment methods | |
| CN108002581B (en) | Method for cleaning high ammonia nitrogen wastewater containing metal ions | |
| WO2013122593A1 (en) | High efficiency water-softening process | |
| Al-Mutaz et al. | Silica reduction in reverse osmosis desalting plants | |
| van der Lindea et al. | Investigation of effective chemical flocculation conditions for the treatment of reverse osmosis reject water from coal power plant: a case study | |
| Dinu et al. | A sustainable approach for the mine water treatment | |
| Veerapaneni et al. | Application of Membrane Technology for Industrial Reuse |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141224 |