CN1974433A - Non-sclerous liquid calcium carbonate with high waste water treatment efficiency and its preparing method - Google Patents
Non-sclerous liquid calcium carbonate with high waste water treatment efficiency and its preparing method Download PDFInfo
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- CN1974433A CN1974433A CNA2006100837774A CN200610083777A CN1974433A CN 1974433 A CN1974433 A CN 1974433A CN A2006100837774 A CNA2006100837774 A CN A2006100837774A CN 200610083777 A CN200610083777 A CN 200610083777A CN 1974433 A CN1974433 A CN 1974433A
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- calcium carbonate
- metal salt
- alkali metal
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/02—Oxides or hydroxides
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- 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
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
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- Inorganic Chemistry (AREA)
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- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The invention provides a not hardening liquid calcium carbonate and its preparation method with high efficiency of waste water processing. The present invention relates to a not hardening liquid calcium carbonate with high efficiency of waste water processing, said liquid calcium carbonate contains mainly calcium hydroxide, and alkali salt (or alkaline-earth metal salt) and dispersed stabilizer to increase the efficiency of liquid calcium carbonate processing and dispersibility. The present invention also relates a method for preparing said liquid calcium carbonate comprising the following steps: alkali salt (or alkaline-earth metal salt) is added in water then stirring alkali salt (or alkaline-earth metal salt) solution, adding dispersed stabilizer to said alkali salt (or alkaline-earth metal salt) solution then stirring alkali salt (or alkaline-earth metal salt) and dispersed stabilizer solution, adding calcium oxide to said alkali salt (or alkaline-earth metal salt) and dispersed stabilizer solution then stirring alkali salt (or alkaline-earth metal salt) and dispersed stabilizer and calcium oxide solution.
Description
Technical field
Present invention relates in general to a kind of non-sclerous liquid calcium carbonate and preparation method thereof with high waste water treatment efficiency.More specifically, the present invention relates to a kind of non-sclerous liquid calcium carbonate and preparation method thereof with high waste water treatment efficiency, described liquid calcium carbonate contains an alkali metal salt (or alkaline earth salt) and dispersion stabilizer, to increase the waste water treatment efficiency and the dispersibility of liquid calcium carbonate.
Background technology
Usually, calcium hydroxide (Ca (OH)
2) be a kind of industrial raw material, it plays as in the neutralizing agent and the vital role of trade effluent.
The kind of trade effluent is a lot, but, particularly, the trade effluent that comes from steel-making, refining, dyeing and manufacturing synthon, metal, semi-conductor and electronic component mainly is made up of acid waste water, this acid water pollution soil and oxidation bridge, building, industrial equipments or miscellaneous equipment, thus the reduction of its structure caused.Therefore, according to control of pollution act, should neutralizing also, the precipitated acid wastewater maybe should neutralize to bury it to discharge it.
Acid waste water in the abandoned mine well is handled by three phases, adopts neutralization tank, reaction tank and settling tank in treating processes, only adopts calcium hydroxide as the chemical of handling simultaneously.Then, sedimentary mud is back to neutralization tank circulates, thereby reduce the consumption of chemical, the moisture of mud, the consumption and the maintenance cost of equipment.Thereby aforesaid method is considered to handle the new model of the acid waste water in the mine.But, when adopting pulverous calcium hydroxide, owing to the generation of dust is difficult to keep and carries out aforesaid method.
In addition, calcium hydroxide also is used to handle the technology by making the high-concentration waste water that contains phosphoric acid and hydrofluoric acid that semiconductor chip produced.When processing contains the waste water of phosphoric acid and hydrofluoric acid, although can adopt directly calcium hydroxide is added to the method for reaction tank, do not assemble pond and settling tank and do not use, this method is disadvantageous, this be because, owing to having used pulverous calcium hydroxide to produce unwanted dust.Therefore, aforesaid method is difficult to practical application.
In addition, because Powdered calcium hydroxide is difficult to handle, need a large amount of effort, because its dispersiveness causes workman's respiratory tract disease and tetter, and, therefore, use the liquid hydrogen calcium oxide to replace pulverous calcium hydroxide more and more because the generation of dust worsens Working environment.
But also there is shortcoming in the liquid hydrogen calcium oxide, and this is because must use a large amount of liquid hydrogen calcium oxide with the neutralizing acid wastewater, thereby has increased raw materials cost.In order to solve such problem, although the method that alkali-metal oxyhydroxide or carbonate are added with calcium hydroxide is used to the neutralizing acid wastewater, this method needs expensive technology cost, thereby causes economical load.
Summary of the invention
According to the present invention, the problems referred to above that the present inventor runs into for fear of correlation technique, non-sclerous liquid calcium carbonate with high waste water treatment efficiency has been carried out deeply and comprehensively research, found that mainly and to contain acid waste water processing efficiency and the dispersibility that an alkali metal salt (or alkaline earth salt) and dispersion stabilizer can increase liquid calcium carbonate in the liquid calcium carbonate of forming by calcium hydroxide, thereby even the acquisition storage long period can the hardened liquid calcium carbonate yet.
Therefore, one of purpose of the present invention is to provide liquid calcium carbonate, described liquid calcium carbonate mainly is made up of calcium hydroxide, and contain an alkali metal salt (or alkaline earth salt) and dispersion stabilizer, to increase the acid waste water processing efficiency and the dispersibility of liquid calcium carbonate, thereby, even storing the long period, described liquid calcium carbonate can not harden yet.
Another object of the present invention is to provide a kind of method for preparing described liquid calcium carbonate.
To achieve the above object, the invention provides the liquid calcium carbonate of mainly being made up of calcium hydroxide, described liquid calcium carbonate contains an alkali metal salt (or alkaline earth salt) and dispersion stabilizer.
Embodiment
To describe the present invention in detail hereinafter.
In liquid calcium carbonate of the present invention, an alkali metal salt (or alkaline earth salt) is used to increase the pH value of liquid calcium carbonate, and play the effect of hydration control agent (hydration controlling agent), be used for when calcium oxide and water reaction generate calcium hydroxide, suppressing the amorphous gathering that the violent hydration owing to calcium oxide produces.
An alkali metal salt (or alkaline earth salt) that adds as the hydration control agent invests on the hydroxyl (OH) on calcium hydroxide surface, to suppress calcium hydroxide in the axial growth of c-.That is to say that calcium hydroxide has crystalline structure, wherein, the weak bond by the Van der Waals force between the OH-OH forms (001) face, thereby an alkali metal salt (or alkaline earth salt) invests on the OH group on (001) face, to suppress the growth on the c-direction of principal axis easily.Therefore, calcium hydroxide is grown towards a-and b-axle, and is suppressed towards the growth of c-axle.Particularly, described (001) face obtains growth rather than other crystal face.
As described an alkali metal salt (or alkaline earth salt), can use to be selected from least a in calcium hydroxide, potassium hydroxide, magnesium hydroxide, sodium hydroxide, sodium-chlor and the Repone K.
The consumption of described an alkali metal salt (or alkaline earth salt) is the 0.1-10 weight % of the gross weight of liquid calcium carbonate, is preferably 0.5-4 weight %.In liquid calcium carbonate of the present invention, if the amount of an alkali metal salt (or alkaline earth salt) less than 0.1 weight % of the gross weight of liquid calcium carbonate, so described an alkali metal salt (or alkaline earth salt) role is insignificant.On the other hand, if the amount of an alkali metal salt (or alkaline earth salt) surpasses 10 weight % of the gross weight of liquid calcium carbonate, use not obviously effect of an alkali metal salt (or alkaline earth salt) so.Therefore, the amount of an alkali metal salt in the liquid calcium carbonate (or alkaline earth salt) is preferably the 0.1-10 weight % of the gross weight of liquid calcium carbonate.
In addition, liquid calcium carbonate of the present invention also contains dispersion stabilizer, is used for the calcium hydroxide of stably dispersing as the main raw material of liquid calcium carbonate.
In the present invention, as dispersion stabilizer, can use to be selected from least a in anion surfactant, nonionogenic tenside and the cats product.
The amount of the dispersion stabilizer in the liquid calcium carbonate is 0.01-1 weight %, is preferably 0.1-0.5 weight %.
In liquid calcium carbonate of the present invention, if the amount of dispersion stabilizer less than 0.01 weight % of the gross weight of liquid calcium carbonate, the dispersion stabilizer role is insignificant so.On the other hand, if the amount of dispersion stabilizer surpasses 1 weight % of the gross weight of liquid calcium carbonate, use not obviously effect of dispersion stabilizer so.Therefore, the amount of the dispersion stabilizer in the liquid calcium carbonate is preferably the 0.01-1 weight % of the gross weight of liquid calcium carbonate of the present invention.
As the anion surfactant of dispersion stabilizer of the present invention, can use to be selected from least a in alkylbenzene sulfonate (alkylbenzenesulfonate), alkene sulfonate (olefin sulfonate), alkyl sulfuric ester, alkyl ether sulphate and the alkane sulfonate.
In addition, as the nonionogenic tenside of dispersion stabilizer, can use to be selected from least a in glycerine, polyoxyethylene glycol, oxyethane, sorbitanic and the sorbyl alcohol.
In addition, as the cats product of dispersion stabilizer, can use to be selected from least a in quaternary ammonium, polyoxyethylene alkyl amine, tetraalkyl ammonium salt and the pyrimidine.
And, have 12-18 carbon atom as the alkyl group in the tensio-active agent of dispersion stabilizer.
The anion surfactant and the cats product that can be used as dispersion stabilizer pass through its ion part and possess hydrophilic property, and nonionogenic tenside is by through the hydrogen bond of hydroxyl or Oxyranyle and water and possess hydrophilic property, rather than has the group of ionic hydrophilic.
The content of the main raw material of liquid calcium carbonate of the present invention---calcium hydroxide is the 5-40 weight % of the gross weight of liquid calcium carbonate, preferred 10-30 weight %, more preferably 15-25 weight %.
As the amount of calcium hydroxide 5 weight % less than the gross weight of liquid calcium carbonate, the amount that is used for the calcium hydroxide of neutralizing acid wastewater is not enough, thereby is difficult to the neutralizing acid wastewater.On the other hand, if the amount of calcium hydroxide surpasses 40 weight % of liquid calcium carbonate gross weight, because the increase of the increase of the viscosity of liquid calcium carbonate and the amount of calcium hydroxide is proportional, thereby be difficult to liquid calcium carbonate is sprayed on the acid waste water, and when storing a segment length time, liquid calcium carbonate may harden.Therefore, the content of the calcium hydroxide in the liquid calcium carbonate is preferably the 5-40 weight % of liquid calcium carbonate gross weight.
In the present invention, liquid calcium carbonate comprises an alkali metal salt (or alkaline earth salt), dispersion stabilizer, calcium hydroxide and water, wherein the amount of an alkali metal salt (or alkaline earth salt), dispersion stabilizer and calcium hydroxide mention in as mentioned the same, surplus is a water.
In addition, the invention provides the method that a kind of preparation contains the liquid calcium carbonate of an alkali metal salt (or alkaline earth salt) and dispersion stabilizer.
The liquid calcium carbonate of an alkali metal salt (or alkaline earth salt) and dispersion stabilizer is mainly formed and contained in preparation of the present invention by calcium hydroxide method may further comprise the steps: an alkali metal salt (or alkaline earth salt) is added in the water, and stirs an alkali metal salt (or alkaline earth salt) solution; Dispersion stabilizer is added in described an alkali metal salt (or alkaline earth salt) solution, and the solution of stirring an alkali metal salt (or alkaline earth salt) and dispersion stabilizer, calcium oxide is added in the solution of described an alkali metal salt (or alkaline earth salt) and dispersion stabilizer then, and stirs the solution of an alkali metal salt (or alkaline earth salt), dispersion stabilizer and calcium oxide.
Described an alkali metal salt (or alkaline earth salt) can comprise and is selected from least a in calcium hydroxide, potassium hydroxide, magnesium hydroxide, sodium hydroxide, sodium-chlor and the Repone K, and the consumption of described an alkali metal salt (or alkaline earth salt) is the 0.1-10 weight % of liquid calcium carbonate gross weight.
Described dispersion stabilizer can comprise and is selected from least a in anion surfactant, nonionogenic tenside, cats product, lipid acid and the soap, and the consumption of described dispersion stabilizer is the 0.01-1 weight % of liquid calcium carbonate gross weight.Similarly, described anion surfactant can comprise and is selected from least a in alkylbenzene sulfonate, alkene sulfonate, alkyl sulfuric ester, alkyl ether sulphate and the alkane sulfonate.Described nonionogenic tenside can comprise and is selected from least a in glycerine, polyoxyethylene glycol, oxyethane, sorbitanic and the sorbyl alcohol.Described cats product can comprise and is selected from least a in quaternary ammonium, polyoxyethylene alkyl amine, tetraalkyl ammonium salt and the pyrimidine.Described lipid acid can comprise and is selected from least a in lauric acid and the coconut oil.Described soap can comprise and is selected from least a in laurate and the coconut ester (cocoate).And, have 12-18 carbon atom as the alkyl group in the described tensio-active agent of dispersion stabilizer.
Calcium oxide and water reaction are to generate calcium hydroxide, and the amount of described calcium hydroxide is the 10-30 weight % of liquid calcium carbonate gross weight.
When calcium oxide is added in the water, calcium oxide produces heat when thermopositive reaction generates calcium hydroxide.In order to remove described heat, the inventive method also can may further comprise the steps: the solution of cooling described an alkali metal salt (or alkaline earth salt), dispersion stabilizer and calcium oxide in whipping process.And, adopting 0-10 ℃, preferred 4 ℃ water is as water coolant.
When preparation liquid calcium carbonate of the present invention, being added to described an alkali metal salt (or alkaline earth salt) in the water and stirring in the step of described an alkali metal salt (or alkaline earth salt) solution, stir so that described an alkali metal salt (or alkaline earth salt) is dispersed in the water.In the present invention, described stirring was carried out 10-60 minute with 50-800rpm, was preferably with 300rpm and carried out 30 minutes.
When preparation liquid calcium carbonate of the present invention, described dispersion stabilizer is being added to described an alkali metal salt (or alkaline earth salt) solution and is stirring in the step of described an alkali metal salt (or alkaline earth salt) and stably dispersing agent solution, stirring so that the dissolving of described dispersion stabilizer.In the present invention, described stirring was carried out 10-60 minute with 50-800rpm, preferably carried out 30 minutes with 300rpm.
When preparation liquid calcium carbonate of the present invention, at the solution that calcium oxide is added to described an alkali metal salt (or alkaline earth salt) and dispersion stabilizer and stir in the step of described an alkali metal salt (or alkaline earth salt), dispersion stabilizer and calcium oxide solution, stir so that calcium oxide and water reaction generate calcium hydroxide.In the present invention, described stirring was carried out 0.5-2 hour with 10-800rpm, preferably carried out 1 hour with 400rpm.
The present invention may be better understood in conjunction with following embodiment and test implementation example, and described embodiment is the purpose for example, rather than restriction the present invention.
Embodiment 1
The sodium hydroxide (NaOH) that accounts for 4 weight % of liquid calcium carbonate gross weight is added in the water, and stirred 30 minutes with 300rpm.
Subsequently, the glycerine that accounts for 0.5 weight % of liquid calcium carbonate gross weight is added in the described sodium hydroxide solution, and stirred described reaction soln 30 minutes, with dissolving glycerine with 300rpm.
Then, calcium oxide is added to the calcium hydroxide that accounts for 20 weight % of liquid calcium carbonate gross weight in the solution of sodium hydroxide and glycerine with generation, and described reaction soln stirred 1 hour with 400rpm, thus the preparation liquid calcium carbonate.
Embodiment 2
Except adding magnesium hydroxide (Mg (OH)
2) replace beyond the sodium hydroxide, prepare liquid calcium carbonate with composition and the mode identical with embodiment 1.
Embodiment 3
Replace the sodium hydroxide except adding potassium hydroxide (KOH), prepare liquid calcium carbonate with composition and the mode identical with embodiment 1.
Embodiment 4
Replace the glycerine except adding polyoxyethylene glycol, prepare liquid calcium carbonate with composition and the mode identical with embodiment 1.
Embodiment 5
Replace the glycerine except adding laurate, prepare liquid calcium carbonate with composition and the mode identical with embodiment 1.
Comparative Examples 1
Except not adding sodium hydroxide, prepare liquid calcium carbonate with composition and the mode identical with embodiment 1.
Comparative Examples 2
Except not adding glycerine, prepare liquid calcium carbonate with composition and the mode identical with embodiment 1.
Test implementation example 1
Measure the waste water treatment efficiency of liquid calcium carbonate
Measure the waste water treatment efficiency of the liquid calcium carbonate of each embodiment and Comparative Examples, for example adopt the phosphoric acid standardized solution of 1000ppm and fluorine standardized solution to measure dephosphorization efficiency by using and fluorine removing rate.The results are shown in following table 1.
Measure the dephosphorization efficiency by using and the fluorine removing rate that contains the fluorine solution of liquid calcium carbonate of the phosphoric acid solution that contains liquid calcium carbonate according to following steps.
The fluorine solution for preparing the 200ppm of the phosphoric acid solution of 200ppm of each part 100ml and 100ml, and described each part solution mixed with the liquid calcium carbonate of each embodiment and Comparative Examples respectively, make calcium ion: the mol ratio of phosphate anion is 1: 0.6, and calcium ion: the mol ratio of fluorion is 1: 2.The starting point concentration of phosphoric acid or fluorine deducts the residual concentration of phosphoric acid or fluorine, with the starting point concentration of income value divided by phosphoric acid or fluorine, then income value be multiply by 100, obtains dephosphorization efficiency by using (%) or fluorine removing rate (%).
Table 1
The waste water treatment efficiency of liquid calcium carbonate
| The embodiment sequence number | Waste water treatment efficiency | |
| Dephosphorization (%) | Defluorination (%) | |
| 1 | 99 | 85 |
| 2 | 80 | 71 |
| 3 | 81 | 72 |
| 4 | 85 | 75 |
| 5 | 84 | 73 |
| C.1 | 72 | 63 |
| C.2 | 75 | 62 |
Test implementation example 2
Measure the dispersion stabilization of liquid calcium carbonate
The throw out height (precipitate height) that is determined at phosphoric acid in the mixture of the liquid calcium carbonate that contains each embodiment and Comparative Examples and phosphoric acid solution or fluorine solution or fluorine (%), to determine dispersion stabilization.The results are shown in following table 2.
Adopt the material cylinder (mass cylinder) of 100ml to measure described throw out height (%).The mixture of the liquid calcium carbonate that contains each embodiment and Comparative Examples of 100ml and phosphoric acid solution or fluorine solution is packed in the material cylinder of described 100ml, vertically placed then 6 hours, after this, the throw out volume divided by cumulative volume, be multiply by income value 100 then and obtains throw out height (%).
Equally, because the throw out height has increased, described dispersion stabilization is excellent.
Table 2
The dispersion stabilization of liquid calcium carbonate
| The embodiment sequence number | Dispersion stabilization |
| Throw out height (%) | |
| 1 | 90 |
| 2 | 74 |
| 3 | 73 |
| 4 | 70 |
| 5 | 71 |
| C.1 | 56 |
| C.2 | 54 |
Described in preamble, the invention provides a kind of non-sclerous liquid calcium carbonate and preparation method thereof with high waste water treatment efficiency.According to the present invention, liquid calcium carbonate has high waste water treatment efficiency, for example, and 99% dephosphorization efficiency by using as shown in Table 1 and Table 2 and 85% fluorine removing rate, and shown superior dispersion stability by the result of throw out height (%).
When not adding an alkali metal salt (or alkaline earth salt) or tensio-active agent as dispersion stabilizer, Comparative Examples 1 and 2 liquid calcium carbonate all have lower dephosphorization efficiency by using and fluorine removing rate.Therefore, when an alkali metal salt (or alkaline earth salt) that uses appropriate amount and tensio-active agent, dispersion stabilization and waste water treatment efficiency can be greatly improved.
Although illustrative purposes and disclose the preferred embodiments of the invention for example, but one of ordinary skill in the art will appreciate that, under the prerequisite that does not depart from the scope and spirit of the present invention disclosed in the accompanying claims, can carry out various modifications, interpolation or alternative.
Claims (10)
1, a kind of liquid calcium carbonate of mainly being made up of calcium hydroxide, described liquid calcium carbonate contains an alkali metal salt or alkaline earth salt and dispersion stabilizer.
2, liquid calcium carbonate according to claim 1, wherein, described an alkali metal salt or alkaline earth salt comprise and are selected from least a in calcium hydroxide, potassium hydroxide, magnesium hydroxide, sodium hydroxide, sodium-chlor and the Repone K, and the consumption of described an alkali metal salt or alkaline earth salt is the 0.1-10 weight % of the gross weight of described liquid calcium carbonate.
3, liquid calcium carbonate according to claim 1, wherein, described dispersion stabilizer comprises and is selected from least a in anion surfactant, nonionogenic tenside and the cats product, and the consumption of described dispersion stabilizer is the 0.01-1 weight % of the gross weight of described liquid calcium carbonate.
4, liquid calcium carbonate according to claim 3, wherein, described anion surfactant comprises and is selected from least a in alkylbenzene sulfonate, alkene sulfonate, alkyl sulfuric ester, alkyl ether sulphate and the alkane sulfonate;
Described ionic surfactant pack is drawn together and is selected from least a in glycerine, polyoxyethylene glycol, oxyethane, sorbitanic and the sorbyl alcohol; And
Described cats product comprises and is selected from least a in quaternary ammonium, polyoxyethylene alkyl amine, tetraalkyl ammonium salt and the pyrimidine;
Alkyl group in the wherein said tensio-active agent has 12-18 carbon atom.
5, a kind of method for preparing mainly the liquid calcium carbonate of being made up of calcium hydroxide comprises:
An alkali metal salt or alkaline earth salt are added in the water, and stir an alkali metal salt or alkaline-earth metal salt solution;
Dispersion stabilizer is added in described an alkali metal salt or the alkaline-earth metal salt solution, and stirs the solution of an alkali metal salt or alkaline earth salt and dispersion stabilizer; And
Calcium oxide is added in the solution of described an alkali metal salt or alkaline earth salt and dispersion stabilizer, and stirs the solution of an alkali metal salt or alkaline earth salt, dispersion stabilizer and calcium oxide.
6, method according to claim 5, wherein, described an alkali metal salt or alkaline earth salt comprise and are selected from least a in calcium hydroxide, potassium hydroxide, magnesium hydroxide, sodium hydroxide, sodium-chlor and the Repone K, and the consumption of described an alkali metal salt or alkaline earth salt is the 0.1-10 weight % of the gross weight of described liquid calcium carbonate.
7, method according to claim 5, wherein, described dispersion stabilizer comprises and is selected from least a in anion surfactant, nonionogenic tenside and the cats product, and the consumption of described dispersion stabilizer is the 0.01-1 weight % of the gross weight of described liquid calcium carbonate.
8, method according to claim 5 wherein, adds described calcium oxide, so that be the 5-40 weight % of the gross weight of described liquid calcium carbonate through the amount of the calcium hydroxide that reaction generated of calcium oxide and water.
9, method according to claim 5 also comprises the solution with the described an alkali metal salt of water quench or alkaline earth salt, dispersion stabilizer and calcium oxide.
10, method according to claim 7, wherein, described anion surfactant comprises and is selected from least a in alkylbenzene sulfonate, alkene sulfonate, alkyl sulfuric ester, alkyl ether sulphate and the alkane sulfonate;
Described ionic surfactant pack is drawn together and is selected from least a in glycerine, polyoxyethylene glycol, oxyethane, sorbitanic and the sorbyl alcohol; And
Described cats product comprises and is selected from least a in quaternary ammonium, polyoxyethylene alkyl amine, tetraalkyl ammonium salt and the pyrimidine;
Alkyl group in the wherein said tensio-active agent has 12-18 carbon atom.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020050116467A KR100735067B1 (en) | 2005-12-01 | 2005-12-01 | Non Hardening Liquid Calcium Hydroxide Having High Ability to Treat Wastewater and Preparing Method of the same |
| KR1020050116467 | 2005-12-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1974433A true CN1974433A (en) | 2007-06-06 |
Family
ID=38124829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006100837774A Pending CN1974433A (en) | 2005-12-01 | 2006-06-05 | Non-sclerous liquid calcium carbonate with high waste water treatment efficiency and its preparing method |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100735067B1 (en) |
| CN (1) | CN1974433A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102423698A (en) * | 2011-11-07 | 2012-04-25 | 河南师范大学 | Sewage purification agent |
| CN108191025A (en) * | 2018-02-05 | 2018-06-22 | 王浩 | A kind of lime suspension handled suitable for fluorine containing waste water and preparation method thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2722117B1 (en) * | 1994-07-06 | 1996-08-30 | Inst Francais Du Petrole | COLLOIDAL CALCIUM HYDROXIDE, ITS PREPARATION AND USES |
| KR0134526B1 (en) * | 1995-08-31 | 1998-04-18 | 김태구 | Head lamp selecting control alarm device |
| GB9626557D0 (en) * | 1996-12-20 | 1997-02-05 | Ecc Int Ltd | The production of slaked lime |
| KR100292139B1 (en) * | 1999-03-24 | 2001-06-01 | 유규재 | Highly Reactive Lime Slurry and Method for Preparing Same |
-
2005
- 2005-12-01 KR KR1020050116467A patent/KR100735067B1/en not_active IP Right Cessation
-
2006
- 2006-06-05 CN CNA2006100837774A patent/CN1974433A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102423698A (en) * | 2011-11-07 | 2012-04-25 | 河南师范大学 | Sewage purification agent |
| CN108191025A (en) * | 2018-02-05 | 2018-06-22 | 王浩 | A kind of lime suspension handled suitable for fluorine containing waste water and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| KR100735067B1 (en) | 2007-07-06 |
| KR20070058144A (en) | 2007-06-07 |
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