CN113582320A - Preparation and application of alkaline calcium-based product with anti-settling property - Google Patents
Preparation and application of alkaline calcium-based product with anti-settling property Download PDFInfo
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- CN113582320A CN113582320A CN202110237838.2A CN202110237838A CN113582320A CN 113582320 A CN113582320 A CN 113582320A CN 202110237838 A CN202110237838 A CN 202110237838A CN 113582320 A CN113582320 A CN 113582320A
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- based product
- alkaline calcium
- settling property
- sodium
- calcium
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- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 239000011575 calcium Substances 0.000 title claims abstract description 34
- 229910052791 calcium Inorganic materials 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title abstract description 9
- 239000002351 wastewater Substances 0.000 claims abstract description 17
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 14
- 230000002378 acidificating effect Effects 0.000 claims abstract description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 7
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052802 copper Inorganic materials 0.000 claims abstract description 7
- 239000010949 copper Substances 0.000 claims abstract description 7
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 7
- 239000011574 phosphorus Substances 0.000 claims abstract description 7
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 7
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims abstract description 5
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 25
- 239000003513 alkali Substances 0.000 claims description 16
- 239000002994 raw material Substances 0.000 claims description 16
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 239000007787 solid Substances 0.000 claims description 14
- 230000001804 emulsifying effect Effects 0.000 claims description 10
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 9
- 239000000292 calcium oxide Substances 0.000 claims description 8
- 235000012255 calcium oxide Nutrition 0.000 claims description 8
- 229910000503 Na-aluminosilicate Inorganic materials 0.000 claims description 7
- 239000002270 dispersing agent Substances 0.000 claims description 7
- 235000012217 sodium aluminium silicate Nutrition 0.000 claims description 7
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 6
- 239000000920 calcium hydroxide Substances 0.000 claims description 6
- 235000011116 calcium hydroxide Nutrition 0.000 claims description 6
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 239000000429 sodium aluminium silicate Substances 0.000 claims description 6
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 6
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 5
- 150000003904 phospholipids Chemical class 0.000 claims description 5
- 229920000768 polyamine Polymers 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 4
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 4
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 claims description 4
- 238000004945 emulsification Methods 0.000 claims description 4
- 230000035484 reaction time Effects 0.000 claims description 4
- 239000010865 sewage Substances 0.000 claims description 4
- 229910001388 sodium aluminate Inorganic materials 0.000 claims description 4
- 239000004912 1,5-cyclooctadiene Substances 0.000 claims description 3
- 229910021532 Calcite Inorganic materials 0.000 claims description 3
- 235000019738 Limestone Nutrition 0.000 claims description 3
- 239000006028 limestone Substances 0.000 claims description 3
- 229910019142 PO4 Inorganic materials 0.000 claims description 2
- 230000009471 action Effects 0.000 claims description 2
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 2
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims description 2
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 239000008367 deionised water Substances 0.000 claims description 2
- 229910021641 deionized water Inorganic materials 0.000 claims description 2
- 239000010459 dolomite Substances 0.000 claims description 2
- 229910000514 dolomite Inorganic materials 0.000 claims description 2
- 229910052731 fluorine Inorganic materials 0.000 claims description 2
- 239000011737 fluorine Substances 0.000 claims description 2
- 150000002222 fluorine compounds Chemical class 0.000 claims description 2
- 229910001385 heavy metal Inorganic materials 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 239000010452 phosphate Substances 0.000 claims description 2
- 235000011118 potassium hydroxide Nutrition 0.000 claims description 2
- 229920001592 potato starch Polymers 0.000 claims description 2
- 239000011780 sodium chloride Substances 0.000 claims description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims 1
- 239000002585 base Substances 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 claims 1
- 239000007858 starting material Substances 0.000 claims 1
- 239000002253 acid Substances 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 239000003814 drug Substances 0.000 abstract description 3
- 239000000047 product Substances 0.000 description 27
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 25
- 235000011941 Tilia x europaea Nutrition 0.000 description 25
- 239000004571 lime Substances 0.000 description 25
- 238000000034 method Methods 0.000 description 16
- 238000006243 chemical reaction Methods 0.000 description 10
- 235000013336 milk Nutrition 0.000 description 8
- 239000008267 milk Substances 0.000 description 8
- 210000004080 milk Anatomy 0.000 description 8
- 238000006386 neutralization reaction Methods 0.000 description 7
- 239000000428 dust Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- 210000000481 breast Anatomy 0.000 description 4
- 239000000839 emulsion Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 3
- 239000006071 cream Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000004065 wastewater treatment Methods 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 2
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000009713 electroplating Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- -1 fluorine ions Chemical class 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000006396 nitration reaction Methods 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000004131 Bayer process Methods 0.000 description 1
- 229910001570 bauxite Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
Images
Classifications
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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
-
- 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
- C02F1/5227—Processes for facilitating the dissolution of solid flocculants in water
-
- 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
-
- 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
- C02F1/5263—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using natural chemical 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
- C02F2101/10—Inorganic compounds
- C02F2101/12—Halogens or halogen-containing compounds
- C02F2101/14—Fluorine or fluorine-containing 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
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal 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
- C02F2209/005—Processes using a programmable logic controller [PLC]
-
- 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
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
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)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Removal Of Specific Substances (AREA)
Abstract
The invention relates to preparation of an alkaline calcium-based product with anti-settling property and treatment application of the alkaline calcium-based product to acid-containing wastewater. The alkaline calcium-based product with the anti-settling property can be kept stable continuously, and the appearance does not change obviously within 3 weeks of standing. The treatment effect of the alkaline calcium-based product with the anti-settling property is superior to the indexes (COD, total phosphorus, copper, nickel, fluoride and the like) of the similar products sold in the market, so that the use amount of the medicament is saved, and the treatment cost of the acidic wastewater is reduced.
Description
Technical Field
The invention discloses preparation and application of an alkaline calcium-based product with anti-settling performance, relates to the field of water treatment agents, and particularly relates to preparation and application of an alkaline calcium-based product for acidic wastewater treatment.
Background
There are various methods for treating acidic wastewater, including neutralization, sulfidization, metal displacement, ion exchange, reverse osmosis, extraction, adsorption, and flotation, among which neutralization is the most basic method. The neutralization method has the characteristics of simple and reliable system and low cost. According to different selected neutralizers, lime milk and limestone neutralization methods can be used.
The lime adding mode comprises a dry adding mode and a wet adding mode. The dry feeding is to directly feed lime into the wastewater, the equipment is simple, but the reaction is slow and incomplete, and the feeding amount is 1.4 to 1.5 times of the theoretical value. The wet feeding method is that lime is digested and lime milk (5% -10%) with a certain concentration is prepared, and then the lime milk is fed into the wastewater through a feeder, and the method has the advantages of rapid reaction, small feeding amount which is 1.05-1.2 times of a theoretical value. However, in the digestion process, dust is more, the operation sanitary condition is poor, raw or over-burnt calcium oxide exists in the raw materials, the raw or over-burnt calcium oxide is not digested basically, and during use, the equipment is easily abraded, and the pipelines, the metering valve and the like are blocked and damaged, so that the normal operation of the sewage treatment equipment is seriously influenced.
Patent ZL201410604411.1 discloses a nitration cotton waste acid water and lime breast neutralization treatment device, provides one kind and can the stable control waste acid water and lime breast neutralization pH value and reduce lime breast valve fault rate's nitration cotton waste acid water and lime breast neutralization treatment device. The lime milk obtained by the method needs to be prepared on site and is easy to generate dust. Patent ZL200810228116.5 is in aluminium oxide production alkali lye and lime cream mix the bin of branch, especially relate to a use in the alumina production of Bayer process and enter the ball mill with the lime cream that the medium dissolves and mix the mixed bin of branch that the production flow of bauxite batching uses with the alkali lye. The mixing and material distributing box for alkali liquor and lime cream has the following structure: the top of the shell is provided with an alkali liquor inlet and a lime milk inlet, a mixing cavity is arranged below the alkali liquor inlet and the lime milk inlet in the shell, a buffer chamber is arranged below the mixing cavity, two sides of the buffer chamber are provided with material distribution chambers, the material distribution chambers are respectively communicated with discharge ports, and the discharge ports are arranged at the lower part of the shell. The method does not explain the settling property of the prepared lime milk mixed liquid. Patent ZL201580036684.3 discloses a process for preparing a very fine milk of lime comprising at least the following steps: there is provided a lime compound selected from the group consisting of pre-hydrated lime, lime slurry obtained by adding quicklime to quicklime instead of adding quicklime to water, and a mixture thereof. The lime milk prepared by the method needs to be subjected to a prehydration process, and the operation is relatively complex.
Based on the large dosage of dry-method addition of lime and poor operation sanitary conditions caused by wet-method addition, the project group develops a nano alkali product, and compared with the dry-method addition, the nano alkali product can reduce the dosage and is simple to add; compared with wet feeding, the method can avoid the generation of dust, has simple operation equipment, reduces the pipeline blockage and can greatly improve the operation sanitary condition.
In order to solve the problems that dust is generated when lime emulsion is prepared on site and the prepared emulsion is easy to settle, the invention prepares the alkaline calcium-based product with anti-settling property, the preparation method is simple and convenient to operate, and the prepared alkaline calcium-based product is used for treating acidic wastewater, has the characteristics of no dust generation, automatic dosing and small dosage, and has lower comprehensive cost of the acidic wastewater.
Disclosure of Invention
The invention aims to provide a preparation method of an alkaline calcium-based product with anti-settling property and application of the alkaline calcium-based product in acidic wastewater, so as to solve the problems that the existing lime product is easy to settle and generates dust, and when the alkaline calcium-based product is used in the acidic wastewater treatment, the alkaline calcium-based product can realize automatic dosing and reduce the dosage of an alkaline medicament, thereby reducing the operation cost of the acidic wastewater treatment.
The invention relates to an alkaline calcium-based product with anti-settling property, which is characterized in that: the alkaline calcium-based product with the anti-settling property is prepared by mixing a calcium-containing alkali raw material, a dispersing agent and water under the action of a multistage emulsifying machine. Through multistage emulsification reaction, the great crushing of granule is tiny granule to can with the abundant contact of pollutant in the waste water, promote the effect of getting rid of the pollutant, reduce the input of medicament. The alkaline calcium-based product with the anti-settling property can be used for efficiently removing phosphate radicals, heavy metals and fluorides in acidic wastewater, and has the function of adjusting the pH value of the wastewater.
The alkali raw materials comprise: at least one of hydrated lime, quicklime, sodium hydroxide, potassium hydroxide, dolomite, calcite, limestone and mixtures thereof. The particle size of the alkali raw material is less than 5 mm; the solid content of the alkali raw materials in the raw material proportion is 10-40%. The raw material water is deionized water.
The dispersing agent is at least one of potato starch, magnesium aluminum silicate, phospholipid powder, polyamine, sodium chloride, aluminum sulfate, aluminum chloride, polyaluminum chloride, sodium aluminate, sodium aluminosilicate and aluminum hydroxide; preferred are phospholipid powder, sodium aluminosilicate, polyamine, polyaluminium chloride, and sodium aluminate; sodium aluminosilicate is particularly preferred. The dosage of the dispersant is 0.01-5% of the solid content of the alkali raw materials.
The multistage emulsifying machine is a two-stage emulsifying machine or a three-stage emulsifying machine, each stage is composed of a group of stators and rotors, and materials are subjected to high-speed shearing and emulsification through the stators and the rotors to complete the technological processes of dispersion and mean value. The rotating speed of the rotor is 2000-5000 rpm. The processing capacity of the emulsifying machine is 0-50m3/h。
The emulsifying temperature is 10-60 ℃, and the reaction time is 0.5-5 h.
The alkaline calcium-based product with the anti-settling property has good dispersibility, and can still keep more than 90% of solid content ratio after 3 weeks. The alkaline calcium-based product can realize automatic dosing through a Programmable Logic Controller (PLC) due to good dispersion effect and fluidity.
The alkaline calcium-based product with the anti-settling property can be used for removing total phosphorus, COD, copper, nickel and fluoride in sewage.
The invention has the beneficial effects that:
1. according to the invention, the alkaline calcium-based product with the anti-settling property is prepared by adding the dispersing agent and carrying out multi-stage emulsification reaction, the product has good dispersibility, more than 90% of solid content can be maintained after 3 weeks, and the problem that the traditional calcium-based product is easy to settle is solved.
2. The alkaline calcium-based product with the anti-settling property can be used for removing total phosphorus, COD, copper, nickel and fluoride in sewage, and can realize automatic dosing through a Programmable Logic Controller (PLC).
Drawings
FIG. 1 is an emulsion reaction diagram of raw materials, wherein the raw materials are added into a reaction kettle and uniformly stirred, the temperature of the materials is controlled by steam, an emulsion pump is started for reaction, and the reaction time is controlled.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example (1)
Sample a: at 20m3Adding 3t of slaked lime into the reaction kettle, adding 1.5t of liquid alkali, adding 10t of water, adding 30kg of sodium aluminosilicate, and reacting at 40 ℃ in a three-stage emulsifying machine at a rotating speed of 3500rpm for 1.5h to prepare the alkaline calcium-based product A with the anti-settling property.
Example (2)
Sample B: at 20m3Adding 2t of quicklime, 2t of sodium hydroxide and 10t of water into the reaction kettle, adding 50kg of polyamine, and reacting at 50 ℃ in a three-stage emulsifying machine at the rotating speed of 3000rpm for 2 hours to prepare the alkaline calcium-based product B with the anti-settling property.
Example (3)
Sample C: at 20m3Adding 3t of calcite powder, 2t of sodium hydroxide, 10t of water and 100kg of phospholipid powder into the reaction kettle, reacting for 3 hours at the rotating speed of 2500rpm under the condition of 30 ℃ of a three-stage emulsifying machine to prepare the anti-settling propertyThe alkaline calcium-based product of (1).
Example (4)
Samples A, B, C from examples (1), (2), and (3) were taken, and each was put into a 1000mL measuring cylinder, and the morphology of the alkaline calcium-based product after standing for 1-3 weeks was observed to calculate the solid content ratio (as shown in Table 1). Wherein the solid content ratio is solid volume/total volume is solid volume/(supernatant volume + solid volume).
TABLE 1, examples (1), (2), (3) preparation of samples the solid content ratio after 3 weeks
It was found through experiments that after 3 weeks, sample A, B, C had a solids content of 94% or more and could be stored at temperature.
Example (5)
The sample A prepared in the example (1) and liquid caustic soda and slaked lime are used for treating acidic wastewater of a hardware electroplating plant in a Dragon sentry region in Shenzhen city, and the technical parameters of the treated wastewater comprise pH value, COD, total phosphorus, ammonia nitrogen, copper, nickel, fluorine ions and the like, and are specifically shown in Table 2. From the experimental results in table 2, the treatment effect of the sample a on treating the COD, total phosphorus, ammonia nitrogen, copper, nickel and fluoride ions of the wastewater is obviously better than that of the liquid caustic soda and lime.
TABLE 2 results of indexes of samples prepared in example (1) and other products after treatment of acid wastewater from electroplating plants
| Raw water | Liquid caustic soda | Lime | Sample A | |
| pH value | 1.3 | 9.01 | 9.11 | 9.05 |
| COD(mg/L) | 1597 | 1115 | 1139 | 1080 |
| Total phosphorus (mg/L) | 8.3 | 3.26 | 0.56 | 0.28 |
| Ammonia nitrogen (mg/L) | 230.1 | 186.7 | 190.7 | 183.5 |
| Copper (mg/L) | 49.19 | 21.43 | 20.78 | 15.50 |
| Nickel (mg/L) | 10.10 | 3.004 | 3.824 | 2.912 |
| Fluoride ion (mg/L) | 15.3 | 14.6 | 9.4 | 8.7 |
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and it will be apparent to those skilled in the art that various modifications and variations can be made in the formulation and preparation process of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. An alkaline calcium-based product having anti-settling properties, characterized in that: the alkaline calcium-based product with the anti-settling property is prepared by mixing a calcium-containing alkaline raw material, a dispersing agent and water under the action of a multistage emulsifying machine; the alkaline calcium-based product with the anti-settling property can be used for efficiently removing phosphate radicals, heavy metals and fluorides in acidic wastewater, and has the function of adjusting the pH value of the wastewater.
2. The base starting material of claim 1, comprising: at least one of hydrated lime, quicklime, sodium hydroxide, potassium hydroxide, dolomite, calcite, limestone and mixtures thereof; the particle size of the alkali raw material is less than 5 mm; the solid content of the alkali raw materials in the raw material proportion is 10-40%.
3. The dispersant of claim 1 being at least one of potato starch, magnesium aluminum silicate, powdered phospholipids, polyamines, sodium chloride, aluminum sulfate, aluminum chloride, polyaluminum chloride, sodium aluminate, sodium aluminosilicate, aluminum hydroxide; preferred are phospholipid powder, sodium aluminosilicate, polyamine, polyaluminium chloride, and sodium aluminate; particularly preferred are sodium aluminosilicates; the dosage of the dispersant is 0.01-5% of the solid content of the alkali raw material; the raw material water is deionized water.
4. The efficient fluorine removing agent as claimed in claim 1, wherein the heating condition is 30-150 ℃, and the reaction time is 0.5-5 h; the emulsification temperature condition of claim 1 is 10-60 ℃ and the reaction time is 0.5-5 h.
5. The anti-settling alkaline calcium-based product of claim 1 having good dispersibility and maintaining a solids content of greater than 90% after 3 weeks.
6. The alkaline calcium-based product with the anti-settling property can be used for removing total phosphorus, COD, copper, nickel and fluoride in sewage, and can realize automatic dosing through a Programmable Logic Controller (PLC).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110237838.2A CN113582320A (en) | 2021-06-05 | 2021-06-05 | Preparation and application of alkaline calcium-based product with anti-settling property |
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| CN202110237838.2A CN113582320A (en) | 2021-06-05 | 2021-06-05 | Preparation and application of alkaline calcium-based product with anti-settling property |
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| CN202110237838.2A Pending CN113582320A (en) | 2021-06-05 | 2021-06-05 | Preparation and application of alkaline calcium-based product with anti-settling property |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114349302A (en) * | 2021-12-30 | 2022-04-15 | 佛山市大千环保科技有限公司 | Sludge decrement liquid caustic soda and manufacturing process thereof |
| CN116813057A (en) * | 2023-05-29 | 2023-09-29 | 深圳市三理智光科技有限公司 | Liquid alkali for treating acidic sewage, preparation method and application thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090229462A1 (en) * | 2005-06-28 | 2009-09-17 | Alain Laudet | Powdered lime composition, method of perparing same and use thereof |
| CN105731475A (en) * | 2016-01-27 | 2016-07-06 | 河南王屋纳米科技有限责任公司 | Preparation method of calcium silicate powder with low pH value, high oil absorption value and large specific surface area |
| CN108455642A (en) * | 2017-12-28 | 2018-08-28 | 江苏永葆环保科技有限公司 | A method of it is prepared without slag PAC using efficiently emulsification shear agitation technology |
| EP3793960A1 (en) * | 2018-11-07 | 2021-03-24 | Carmeuse Research And Technology | Limewater |
-
2021
- 2021-06-05 CN CN202110237838.2A patent/CN113582320A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090229462A1 (en) * | 2005-06-28 | 2009-09-17 | Alain Laudet | Powdered lime composition, method of perparing same and use thereof |
| CN105731475A (en) * | 2016-01-27 | 2016-07-06 | 河南王屋纳米科技有限责任公司 | Preparation method of calcium silicate powder with low pH value, high oil absorption value and large specific surface area |
| CN108455642A (en) * | 2017-12-28 | 2018-08-28 | 江苏永葆环保科技有限公司 | A method of it is prepared without slag PAC using efficiently emulsification shear agitation technology |
| EP3793960A1 (en) * | 2018-11-07 | 2021-03-24 | Carmeuse Research And Technology | Limewater |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114349302A (en) * | 2021-12-30 | 2022-04-15 | 佛山市大千环保科技有限公司 | Sludge decrement liquid caustic soda and manufacturing process thereof |
| CN116813057A (en) * | 2023-05-29 | 2023-09-29 | 深圳市三理智光科技有限公司 | Liquid alkali for treating acidic sewage, preparation method and application thereof |
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