CN114368819A - Sewage decolorant and preparation method thereof - Google Patents
Sewage decolorant and preparation method thereof Download PDFInfo
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- CN114368819A CN114368819A CN202011094437.8A CN202011094437A CN114368819A CN 114368819 A CN114368819 A CN 114368819A CN 202011094437 A CN202011094437 A CN 202011094437A CN 114368819 A CN114368819 A CN 114368819A
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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
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
Abstract
The invention belongs to the field of sewage decolorants, in particular to a sewage decolorant and a preparation method thereof, aiming at the problems of poor decoloring effect, low decoloring efficiency and inconvenient use of most of the existing sewage decolorants, the following scheme is proposed, wherein the sewage decolorant comprises the following raw materials by weight: 30-40g of sulfuric acid, 6-10g of calcium powder, 3-7g of aluminum powder, 10-14g of oxygen iron powder, 9-13g of ferrous sulfate, 1-3g of hydrochloric acid, 1-2g of magnesium oxide, 8-12g of water, 11-15g of active calcium, 1-3g of oxide and 1-2g of dispersing agent.
Description
Technical Field
The invention relates to the technical field of sewage decolorants, and particularly relates to a sewage decolorant and a preparation method thereof.
Background
The sewage treatment generally adopts: the combined process of physical and chemical precipitation (or air flotation), anaerobic (or facultative anaerobic), aerobic and physical and chemical precipitation not only effectively removes more than 40 percent of COD and other suspended substances, ammonia nitrogen and the like through flocculation, but also has a certain decolorizing function; after biochemical effluent, other indexes of various enterprises can reach the standard, and the color is only present and is generally light yellow or brown; such as: coking wastewater, printing and dyeing wastewater, and papermaking wastewater.
Therefore, a special sewage decolorizer is needed for treating sewage, but most of the existing sewage decolorizers have poor decolorization effect and low decolorization efficiency, so that the use is inconvenient.
Therefore, we propose a sewage decolorizer and a preparation method thereof to solve the above problems.
Disclosure of Invention
The invention aims to solve the defects of poor decolorizing effect, low decolorizing efficiency and inconvenient use of most sewage decolorizing agents in the prior art, and provides a sewage decolorizing agent and a preparation method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
a sewage decolorant comprises the following raw materials by weight: 30-40g of sulfuric acid, 6-10g of calcium powder, 3-7g of aluminum powder, 10-14g of oxygen iron powder, 9-13g of ferrous sulfate, 1-3g of hydrochloric acid, 1-2g of magnesium oxide, 8-12g of water, 11-15g of active calcium, 1-3g of oxide and 1-2g of dispersing agent.
Preferably, the feed comprises the following raw materials by weight: 32-38g of sulfuric acid, 7-9g of calcium powder, 4-6g of aluminum powder, 11-13g of oxygen iron powder, 10-12g of ferrous sulfate, 2-3g of hydrochloric acid, 1.5-2g of magnesium oxide, 9-11g of water, 12-14g of active calcium, 2-3g of oxide and 1.5-2g of dispersing agent.
Preferably, the feed comprises the following raw materials by weight: 35g of sulfuric acid, 8g of calcium powder, 5g of aluminum powder, 12g of oxygen iron powder, 11g of ferrous sulfate, 2g of hydrochloric acid, 1.5g of magnesium oxide, 10g of water, 13g of active calcium, 2g of oxide and 1.5g of dispersing agent.
Preferably, the weight ratio of the sulfuric acid to the calcium powder to the aluminum powder is as follows: 30-40: 6-10: 3-7.
Preferably, the weight ratio of the oxygen iron powder, the ferrous sulfate, the hydrochloric acid and the magnesium oxide is 10-14: 9-13: 1-3: 1-2.
A preparation method of a sewage decolorant comprises the following steps:
s1: mixing and diluting sulfuric acid and water, adding calcium powder, and stirring at the speed of 80-90r/min for reaction for 10-15 min;
s2: adding aluminum powder, and stirring at the speed of 75-80r/min for reaction for 8-10 min;
s3: adding oxygen iron powder, and stirring at the speed of 70-75r/min for reaction for 6-8 min;
s4: adding ferrous sulfate, stirring and reacting for 11-13min at the speed of 100-120 r/min;
s5: adding hydrochloric acid, and stirring at 60-70r/min for reaction for 2-3 min;
s6: adding magnesium oxide, and stirring at the speed of 80-90r/min for reaction for 12-14 min;
s7: adding active calcium, and stirring at 50-60r/min for reaction for 4-6 min;
s8: adding oxide, stirring at 55-65r/min, and reacting for 3-4 min;
s9: adding a dispersant, and stirring and reacting for 9-12min at the speed of 40-50 r/min;
s10: heating to 90-100 ℃, and stirring and reacting for 25-30min at the speed of 100-;
s11: the preparation of the sewage decolorant is completed.
Preferably, in the S1, sulfuric acid and water are mixed and diluted, then calcium powder is added, and the reaction is stirred at the speed of 82-88r/min for 11-14 min.
Preferably, in the S2, aluminum powder is added, and the reaction is stirred at the speed of 76-79r/min for 9-10 min.
Preferably, in the S9, a dispersing agent is added, and the reaction is stirred at the speed of 42-48r/min for 10-11 min.
Preferably, in S10, the temperature is raised to 92-98 ℃, and the reaction is stirred at the speed of 110-120r/min for 27-29min under the ultrasonic treatment of the ultrasonic power of 190-210W.
Sulfuric acid is the most active binary strong inorganic acid and can react with most metals; the high-concentration sulfuric acid has strong water absorption and can be used as a dehydrating agent for carbonizing carbohydrate-containing substances such as wood, paper, cotton and linen fabrics, biological skin and meat and the like; when mixed with water, a large amount of heat energy is also released; it is strongly corrosive and oxidative, so it needs to be used carefully; is an important industrial raw material, can be used for manufacturing fertilizers, medicines, explosives, pigments, detergents, storage batteries and the like, and is also widely applied to industries of purifying petroleum, metal smelting, dyes and the like; is commonly used as a chemical reagent and can be used as a dehydrating agent and a sulfonating agent in organic synthesis.
Calcium powder is commonly known as: limestone, stone powder, is a compound that is basic, substantially insoluble in water, and soluble in acid.
Aluminum powder, commonly called silver powder, is a silver metal pigment, a small amount of lubricant is added into pure aluminum foil, and the mixture is crushed into scaly powder by ramming and then polished to obtain the silver-colored metal pigment; the aluminum powder is light in weight, high in floating force, strong in covering power and good in light and heat reflecting performance; after treatment, the aluminum powder can also be non-floating aluminum powder; the aluminum powder can be used for identifying fingerprints and can also be used as fireworks; aluminum powder is a large class of metal pigments due to its wide use, large demand, and many varieties.
The ferrous sulfate is a blue-green monoclinic crystal or particle and has no odor; weathering in dry air, surface oxidizing in humid air to brown basic ferric sulfate; becomes tetrahydrate at 56.6 ℃ and becomes monohydrate at 65 ℃; soluble in water, practically insoluble in ethanol; the aqueous solution is slowly oxidized in the air when being cooled and is quickly oxidized when being heated; adding alkali or dew to accelerate the oxidation; the product is irritant; the anhydrous ferrous sulfate is white powder, the crystal water is light green crystal, the crystal is commonly called as copperas, and the crystal is light green when dissolved in water solution; the ferrous sulfate can be used for chromatographic analysis reagents and drop analysis for measuring platinum, selenium, nitrite and nitrate; ferrous sulfate can also be used as a reducing agent, for producing ferrites, for purifying water, for polymerizing catalysts, for photomechanical production, etc.
The hydrochloric acid is an aqueous solution of hydrogen chloride, belongs to a strong unitary inorganic acid and has wide industrial application; the hydrochloric acid is colorless and transparent liquid, has strong pungent smell and high corrosivity; the concentrated hydrochloric acid (the mass fraction is about 37%) has extremely strong volatility, so that hydrogen chloride gas can volatilize after a container containing the concentrated hydrochloric acid is opened, and is combined with water vapor in the air to generate small drops of hydrochloric acid, so that acid mist appears above a bottle mouth; hydrochloric acid is the main component of gastric acid and it promotes digestion of food and protects against microbial infections.
The magnesium oxide is commonly called magnesia, also called magnesia, is an alkaline oxide, has the universality of the alkaline oxide and belongs to a cementing material; white powder (yellowish magnesium nitride), odorless, tasteless, nontoxic, is a typical alkaline earth metal oxide, represented by the chemical formula MgO; white powder with melting point of 2852 ℃, boiling point of 3600 ℃ and relative density of 3.58(25 ℃); soluble in acid and ammonium salt solutions and insoluble in alcohol.
The activated calcium has narrow particle size distribution range, reduced water absorption, reduced oil absorption value and good affinity with resin, and is beneficial to improving the tensile, compression and wear resistance of the product;
the oxide belongs to the compound (certainly, the oxide is pure); the composition of the metal oxide comprises two elements, wherein one element is certain to be an oxygen element, and the other element is a metal element and is called metal oxide; if the other is not a metal element, it is called a non-metal oxide.
The dispersing agent is a surfactant which has two opposite properties of lipophilicity and hydrophilcity in a molecule; the amphiphilic agent is capable of uniformly dispersing solid and liquid particles of inorganic and organic pigments which are difficult to dissolve in liquids, and also preventing settling and agglomeration of the particles to form stable suspensions.
Compared with the prior art, the invention has the beneficial effects that:
the bright color is removed mainly by active calcium, oxygen iron powder, aluminum powder and oxide;
due to the arrangement of the oxide, the oxygen iron powder, the aluminum powder and the magnesium oxide, the purpose of decoloring can be achieved, wherein the magnesium oxide has a decoloring effect and is an oxide which plays a main role in decoloring.
The invention is used for treating the color wastewater, plays a role in decoloring, and has the advantages of good decoloring effect, high decoloring efficiency and convenient use.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments.
Example one
A sewage decolorant comprises the following raw materials by weight: 30g of sulfuric acid, 6g of calcium powder, 3g of aluminum powder, 10g of oxygen iron powder, 9g of ferrous sulfate, 1g of hydrochloric acid, 1g of magnesium oxide, 8g of water, 11g of active calcium, 1g of oxide and 1g of dispersing agent;
the preparation method comprises the following steps:
s1: mixing and diluting sulfuric acid and water, then adding calcium powder, and stirring and reacting at the speed of 80r/min for 10 min;
s2: adding aluminum powder, and stirring and reacting at the speed of 75r/min for 8 min;
s3: adding oxygen iron powder, and stirring at the speed of 70r/min for reaction for 6 min;
s4: adding ferrous sulfate, and stirring at a speed of 100r/min for reaction for 11 min;
s5: adding hydrochloric acid, and stirring at the speed of 60r/min for reaction for 2 min;
s6: adding magnesium oxide, and stirring at the speed of 80r/min for reaction for 12 min;
s7: adding active calcium, and stirring at a speed of 50r/min for reaction for 4 min;
s8: adding oxide, stirring at the speed of 55r/min, and reacting for 3 min;
s9: adding a dispersing agent, and stirring and reacting for 9min at the speed of 40 r/min;
s10: heating to 90 ℃, and stirring and reacting for 25min at the speed of 100r/min under the ultrasonic treatment of ultrasonic power of 180W;
s11: the preparation of the sewage decolorant is completed.
Example two
A sewage decolorant comprises the following raw materials by weight: 35g of sulfuric acid, 8g of calcium powder, 5g of aluminum powder, 12g of oxygen iron powder, 11g of ferrous sulfate, 2g of hydrochloric acid, 1.5g of magnesium oxide, 10g of water, 13g of active calcium, 2g of oxide and 1.5g of dispersing agent;
the preparation method comprises the following steps:
s1: mixing and diluting sulfuric acid and water, then adding calcium powder, and stirring and reacting at the speed of 85r/min for 13 min;
s2: adding aluminum powder, and stirring at the speed of 78r/min for reaction for 9 min;
s3: adding oxygen iron powder, and stirring at the speed of 73r/min for reaction for 7 min;
s4: adding ferrous sulfate, and stirring at a speed of 110r/min for reaction for 12 min;
s5: adding hydrochloric acid, and stirring at a speed of 65r/min for reaction for 2 min;
s6: adding magnesium oxide, and stirring at the speed of 85r/min for reaction for 13 min;
s7: adding active calcium, and stirring at 55r/min for reaction for 5 min;
s8: adding oxide, stirring at 60r/min for reaction for 3 min;
s9: adding a dispersing agent, and stirring and reacting for 10min at the speed of 45 r/min;
s10: heating to 95 ℃, and stirring and reacting for 28min at the speed of 110r/min under the ultrasonic treatment of 200W of ultrasonic power;
s11: the preparation of the sewage decolorant is completed.
EXAMPLE III
A sewage decolorant comprises the following raw materials by weight: 40g of sulfuric acid, 10g of calcium powder, 7g of aluminum powder, 14g of oxygen iron powder, 13g of ferrous sulfate, 3g of hydrochloric acid, 2g of magnesium oxide, 12g of water, 15g of active calcium, 3g of oxide and 2g of dispersing agent;
the preparation method comprises the following steps:
s1: mixing and diluting sulfuric acid and water, then adding calcium powder, and stirring and reacting at the speed of 90r/min for 15 min;
s2: adding aluminum powder, and stirring and reacting at the speed of 80r/min for 10 min;
s3: adding oxygen iron powder, and stirring at the speed of 75r/min for reaction for 8 min;
s4: adding ferrous sulfate, and stirring at a speed of 120r/min for reaction for 13 min;
s5: adding hydrochloric acid, and stirring at a speed of 70r/min for reaction for 3 min;
s6: adding magnesium oxide, and stirring at the speed of 90r/min for reaction for 14 min;
s7: adding active calcium, and stirring at 60r/min for reaction for 6 min;
s8: adding an oxide, and stirring at the speed of 65r/min for reaction for 4 min;
s9: adding a dispersing agent, and stirring and reacting at the speed of 50r/min for 12 min;
s10: heating to 100 ℃, and stirring and reacting for 30min at the speed of 120r/min under the ultrasonic treatment of 220W ultrasonic power;
s11: the preparation of the sewage decolorant is completed.
The sewage decolorizers obtained in the first, second and third examples and the sewage decolorizer in the prior art are used for treating the same sewage at the same time, and it is obvious from the treatment results that the decolorization effect and the decolorization efficiency of the sewage decolorizers obtained in the first, second and third examples are obviously superior to those of the sewage decolorizer in the prior art, and the second example is the best example.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. The sewage decolorant is characterized by comprising the following raw materials by weight: 30-40g of sulfuric acid, 6-10g of calcium powder, 3-7g of aluminum powder, 10-14g of iron oxide powder, 9-13g of ferrous sulfate, 1-3g of hydrochloric acid, 1-2g of magnesium oxide, 8-12g of water, 11-15g of active calcium, 1-3g of oxide and 1-2g of dispersing agent.
2. The sewage decolorant according to claim 1, comprising the following raw materials by weight: 32-38g of sulfuric acid, 7-9g of calcium powder, 4-6g of aluminum powder, 11-13g of oxygen iron powder, 10-12g of ferrous sulfate, 2-3g of hydrochloric acid, 1.5-2g of magnesium oxide, 9-11g of water, 12-14g of active calcium, 2-3g of oxide and 1.5-2g of dispersing agent.
3. The sewage decolorant according to claim 2, comprising the following raw materials by weight: 35g of sulfuric acid, 8g of calcium powder, 5g of aluminum powder, 12g of oxygen iron powder, 11g of ferrous sulfate, 2g of hydrochloric acid, 1.5g of magnesium oxide, 10g of water, 13g of active calcium, 2g of oxide and 1.5g of dispersing agent.
4. The sewage decolorant according to claim 1, wherein the weight ratio of the sulfuric acid to the calcium powder to the aluminum powder is: 30-40: 6-10: 3-7.
5. The sewage decolorant according to claim 1, wherein the weight ratio of the oxygen iron powder to the ferrous sulfate to the hydrochloric acid to the magnesium oxide is 10-14: 9-13: 1-3: 1-2.
6. A preparation method of a sewage decolorant is characterized by comprising the following steps:
s1: mixing and diluting sulfuric acid and water, adding calcium powder, and stirring at the speed of 80-90r/min for reaction for 10-15 min;
s2: adding aluminum powder, and stirring at the speed of 75-80r/min for reaction for 8-10 min;
s3: adding oxygen iron powder, and stirring at the speed of 70-75r/min for reaction for 6-8 min;
s4: adding ferrous sulfate, stirring and reacting for 11-13min at the speed of 100-120 r/min;
s5: adding hydrochloric acid, and stirring at 60-70r/min for reaction for 2-3 min;
s6: adding magnesium oxide, and stirring at the speed of 80-90r/min for reaction for 12-14 min;
s7: adding active calcium, and stirring at 50-60r/min for reaction for 4-6 min;
s8: adding oxide, stirring at 55-65r/min, and reacting for 3-4 min;
s9: adding a dispersant, and stirring and reacting for 9-12min at the speed of 40-50 r/min;
s10: heating to 90-100 ℃, and stirring and reacting for 25-30min at the speed of 100-;
s11: the preparation of the sewage decolorant is completed.
7. The method for preparing a sewage decolorizing agent according to claim 6, wherein in S1, sulfuric acid and water are mixed and diluted, then calcium powder is added, and the reaction is stirred at a speed of 82-88r/min for 11-14 min.
8. The method for preparing a sewage decolorizing agent according to claim 6, wherein aluminum powder is added into S2, and the reaction is carried out at a speed of 76-79r/min for 9-10min with stirring.
9. The method for preparing a sewage decolorant according to claim 6, wherein a dispersant is added into S9, and the mixture is stirred and reacted at a speed of 42-48r/min for 10-11 min.
10. The method for preparing a sewage decolorizer according to claim 6, wherein in S10, the temperature is raised to 92-98 ℃, and the reaction is carried out under the ultrasonic treatment of ultrasonic power of 190-210W and stirring at a speed of 110-120r/min for 27-29 min.
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| CN202011094437.8A CN114368819A (en) | 2020-10-14 | 2020-10-14 | Sewage decolorant and preparation method thereof |
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| CN202011094437.8A CN114368819A (en) | 2020-10-14 | 2020-10-14 | Sewage decolorant and preparation method thereof |
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Citations (7)
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| JPS59219252A (en) * | 1983-05-30 | 1984-12-10 | Nippon Oil & Fats Co Ltd | Purification of acrylic acid ester or methacrylic acid ester |
| CN1121488A (en) * | 1994-10-28 | 1996-05-01 | 中山大学 | Decolor coagulant for waste water in dyeing industry and producing method |
| CN1336335A (en) * | 2000-07-29 | 2002-02-20 | 詹伯君 | Decoloring coagulant of composite iron salt |
| CN101591054A (en) * | 2009-06-17 | 2009-12-02 | 张小娟 | Compound color-odor removal coagulating agent and production method and be used for the technology that leather sewage is handled |
| CN102648926A (en) * | 2011-02-25 | 2012-08-29 | 苏州宝泽堂医药科技有限公司 | Method for extracting notoginsenoside and notoginseng total amino acid |
| CN102786129A (en) * | 2012-08-16 | 2012-11-21 | 刘耀红 | Aluminum ferric sulfate water purifier and preparation method thereof |
| CN110773116A (en) * | 2019-11-20 | 2020-02-11 | 苏州溪能环保科技有限公司 | Phenol-containing wastewater purifying agent and preparation method thereof |
-
2020
- 2020-10-14 CN CN202011094437.8A patent/CN114368819A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59219252A (en) * | 1983-05-30 | 1984-12-10 | Nippon Oil & Fats Co Ltd | Purification of acrylic acid ester or methacrylic acid ester |
| CN1121488A (en) * | 1994-10-28 | 1996-05-01 | 中山大学 | Decolor coagulant for waste water in dyeing industry and producing method |
| CN1336335A (en) * | 2000-07-29 | 2002-02-20 | 詹伯君 | Decoloring coagulant of composite iron salt |
| CN101591054A (en) * | 2009-06-17 | 2009-12-02 | 张小娟 | Compound color-odor removal coagulating agent and production method and be used for the technology that leather sewage is handled |
| CN102648926A (en) * | 2011-02-25 | 2012-08-29 | 苏州宝泽堂医药科技有限公司 | Method for extracting notoginsenoside and notoginseng total amino acid |
| CN102786129A (en) * | 2012-08-16 | 2012-11-21 | 刘耀红 | Aluminum ferric sulfate water purifier and preparation method thereof |
| CN110773116A (en) * | 2019-11-20 | 2020-02-11 | 苏州溪能环保科技有限公司 | Phenol-containing wastewater purifying agent and preparation method thereof |
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