CN111717970B - Chemical composition agent and method for rapid separation of muddy water and purification of water - Google Patents
Chemical composition agent and method for rapid separation of muddy water and purification of water Download PDFInfo
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- CN111717970B CN111717970B CN202010570980.4A CN202010570980A CN111717970B CN 111717970 B CN111717970 B CN 111717970B CN 202010570980 A CN202010570980 A CN 202010570980A CN 111717970 B CN111717970 B CN 111717970B
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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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
- C02F11/148—Combined use of inorganic and organic substances, being added in the same treatment step
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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
- C02F1/52—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
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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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
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- 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)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention provides a chemical combination agent and a method for rapid separation of muddy water and purification of water quality. By adopting the agent, the sludge treatment time is short, the SS removal rate reaches 98 percent, the TP removal rate reaches 94 percent, and the COD is high Cr The removal rate reaches 96%, the turbidity reduction rate reaches 99%, the water content reduction rate reaches 70%, and the effect is remarkable, so that the method is suitable for large-scale popularization and application.
Description
Technical Field
The invention relates to the technical field of environmental engineering, in particular to a chemical composition agent and a method for rapid separation of muddy water and purification of water.
Background
The traditional sludge flocculation sedimentation process is that large floccules are formed after dosing flocculation and sedimentation is carried out by depending on the gravity of the floccules. The main factors influencing the mud-water separation and the water purification are as follows: the properties of the sludge, the concentration of the sludge, the viscosity of the sludge and the filtrate, the properties of the coagulant, etc. The influence of the factors on the sludge dewatering performance is complicated, and a relatively systematic comprehensive study is lacked at present.
Heavy rain in summer in south causes a great amount of silt and impurities on the ground to flow into rivers, so that the turbidity of the water body is increased. The density of particles in water is high, self-coagulation flocs are small, and the structure is loose; the viscous resistance of the particles moving in water is increased, the diffusion resistance of the medicament is large, the speed is low, the medicament is difficult to be uniformly mixed with turbid water, and partial silt particles cannot be fully contacted with the medicament to form flocculation, so that the sludge cannot be removed by precipitation. In addition, the precipitation method is characterized in that the precipitation method is used for precipitation of algae, the precipitation performance is high, algae cells contain air bags, the precipitation performance is poor, flocculating constituents are difficult to form, and the flocculating constituents are not high even if the flocculating constituents are formed due to low density of the algae, so that more chemicals are consumed for coagulation precipitation of the algae. Aiming at the problems that the treatment effect of the river sludge is poor, the water quality after flocculation sedimentation is still poor, a large amount of sludge is still contained and the like, a better mud water treatment scheme needs to be provided urgently.
Disclosure of Invention
In view of the defects of the prior art, the invention provides a chemical composition agent and a method for quickly separating muddy water and purifying water.
The scheme of the invention comprises the following aspects:
a chemical combination agent for rapid separation of muddy water and purification of water quality comprises: polyaluminium chloride, modified water glass, sodium stearoyl lactylate, calcium peroxide, fumaric acid and anionic polyacrylamide.
Preferably, 10-17 mg of polyaluminum chloride, 3-7 mg of modified water glass, 1-2 mg of sodium stearoyl lactylate, 0.03-0.08 mg of calcium peroxide, 0.4-0.8 mg of fumaric acid and 10-14 mg of anionic polyacrylamide are used per liter of the mud-water mixture.
Preferably, the modified water glass is: adjusting the pH value of water to 5.0-6.0, then adding a silane coupling agent, uniformly mixing, adding water glass, uniformly mixing in a water bath at 50-60 ℃, keeping the mixing rotation speed at 50-100 rpm, and dropwise adding acrylic acid to obtain the acrylic acid-containing aqueous solution.
Preferably, the mass ratio of the silane coupling agent, the water glass, the acrylic acid and the water is (0.2-0.3): (8-9): 1-1.2): 1-2.
The invention also provides a preferable use method of the chemical combination agent, which comprises the following steps: adding polyaluminum chloride and modified water glass (10-17 mg of polyaluminum chloride and 3-7 mg of modified water glass are used in each liter of the muddy water mixture), stirring at 50-100 rpm for 3-5 min, precipitating for 30-60 min, recovering upper liquid, sequentially adding sodium stearoyl lactylate, calcium peroxide and fumaric acid into the upper liquid, stirring at 50-100 rpm for 3-5 min, adding anionic polyacrylamide, stirring at 50-100 rpm for 3-5 min, and standing for precipitating for at least 30 min.
Preferably, 1-1.7 mg of sodium stearyl lactate, 0.03-0.05 mg of calcium peroxide and 0.4-0.6 mg of fumaric acid are added into each liter of upper liquid.
Preferably, 10-13 mg of anionic polyacrylamide is added per liter of supernatant.
Preferably, 10-17 mg of polyaluminum chloride and 3-7 mg of modified water glass are used in each liter of the muddy water mixture.
The invention achieves the technical effects that:
the invention comprehensively considers the distribution situation of positive and negative charges on the surface of silt, and the situations of high density of silt particles, high algae growth and the like in a river in summer, and develops a high-quality chemical composition agent for sludge-water quick separation and water quality purification. The chemical combination agent contains polyaluminium chloride, modified water glass, sodium stearoyl lactylate, calcium peroxide, fumaric acid and anionic polyacrylamide.
By adopting the method, the sludge treatment time is short, the SS removal rate reaches 98 percent, the TP removal rate reaches 94 percent, and the COD is high Cr The removal rate reaches 96%, the turbidity reduction rate reaches 99%, the water content reduction rate reaches 70%, and the effect is remarkable, so that the method is suitable for large-scale popularization and application.
Detailed Description
In order to better understand the technical content of the invention, specific examples are provided below to further illustrate the invention.
Example 1
A chemical composition agent for rapid separation of muddy water and purification of water quality comprises: polyaluminium chloride (PAC), modified water glass, sodium stearoyl lactylate, calcium peroxide, fumaric acid, and Anionic Polyacrylamide (APAM).
The modified water glass comprises the following components: adjusting the pH value of water to 5.0, then adding a silane coupling agent, uniformly mixing, adding water glass, uniformly mixing in a water bath at 50-52 ℃, keeping the mixing rotation speed at 50rpm, and dropwise adding acrylic acid. The mass ratio of the silane coupling agent to the water glass to the acrylic acid to the water is 0.2:9:1: 1.
The method of using the chemical combination agent comprises the following steps: adding polyaluminum chloride and modified water glass (17 mg of polyaluminum chloride and 3mg of modified water glass are used in each liter of the muddy water mixture), stirring at 50rpm for 5min, precipitating for 30min, recovering supernatant, sequentially adding sodium stearyl lactate, calcium peroxide and fumaric acid (1 mg of sodium stearyl lactate, 0.05mg of calcium peroxide and 0.6mg of fumaric acid are added in each liter of supernatant), stirring at 50rpm for 5min, adding anionic polyacrylamide (13 mg of anionic polyacrylamide is added in each liter of supernatant), stirring at 50rpm for 5min, standing and precipitating for 30min, recovering the supernatant to detect water quality, and combining all treated sludge to detect water content.
Example 2
A chemical composition agent for rapid separation of muddy water and purification of water quality comprises: polyaluminium chloride, modified water glass, sodium stearoyl lactylate, calcium peroxide, fumaric acid and anionic polyacrylamide.
The modified water glass comprises the following components: adjusting the pH value of water to 5.0, then adding a silane coupling agent, uniformly mixing, adding water glass, uniformly mixing in a water bath at 50-52 ℃, keeping the mixing rotation speed at 50rpm, and dropwise adding acrylic acid. The mass ratio of the silane coupling agent to the water glass to the acrylic acid to the water is 0.2:9:1: 1.
The method of using the chemical combination agent comprises the following steps: adding polyaluminum chloride and modified water glass (10 mg of polyaluminum chloride and 7mg of modified water glass are used in each liter of muddy water mixture), stirring at 100rpm for 3min, precipitating for 60min, recovering supernatant, sequentially adding sodium stearoyl lactylate, calcium peroxide and fumaric acid (1.7 mg of sodium stearoyl lactylate, 0.03mg of calcium peroxide and 0.4mg of fumaric acid are added in each liter of supernatant), stirring at 100rpm for 3min, adding anionic polyacrylamide (10 mg of anionic polyacrylamide is added in each liter of supernatant), stirring at 100rpm for 3min, standing and precipitating for 60min, recovering supernatant to detect water quality, and combining all treated sludge to detect water content.
Example 3
The difference between this example and example 2 is:
the method of using the chemical combination agent comprises the following steps: adding polyaluminum chloride and modified water glass (10 mg of polyaluminum chloride and 2mg of modified water glass are used in each liter of the muddy water mixture), stirring at 100rpm for 3min, precipitating for 60min, recovering supernatant, sequentially adding sodium stearyl lactate, calcium peroxide and fumaric acid (4 mg of sodium stearyl lactate, 0.02mg of calcium peroxide and 0.1mg of fumaric acid are added in each liter of supernatant), stirring at 100rpm for 3min, adding anionic polyacrylamide (10 mg of anionic polyacrylamide is added in each liter of supernatant), stirring at 100rpm for 3min, standing and precipitating for 60min, recovering supernatant to detect water quality, and recovering all combined sludge to detect water content.
Example 4
The main differences between this embodiment and embodiment 2 are:
the modified water glass comprises the following components: adjusting the pH value of water to 6.0, then adding a silane coupling agent, uniformly mixing, adding water glass, uniformly mixing in a water bath at the temperature of 58-60 ℃, keeping the mixing rotation speed at 100rpm, and dropwise adding acrylic acid. The mass ratio of the silane coupling agent to the water glass to the acrylic acid to the water is 0.3:8:1.2: 2.
Example 5
The difference between this example and example 4 is:
the modified water glass comprises the following components: adjusting the pH value of water to 6.5, adding a silane coupling agent, uniformly mixing, adding water glass, and uniformly mixing in a water bath at 50-60 ℃. The mass ratio of the silane coupling agent to the water glass to the water is 0.3:8: 2.
Example 6
The difference between this example and example 1 is:
the method of using the chemical combination agent comprises the following steps: and (3) sequentially adding polyaluminium chloride, modified water glass, sodium stearoyl lactate, calcium peroxide, fumaric acid and anionic polyacrylamide into the muddy water mixture, stirring at 50rpm for 3-5 min, standing and precipitating for 60min, and recovering the upper liquid and detecting.
17mg of polyaluminum chloride, 3mg of modified water glass, 1mg of sodium stearoyl lactylate, 0.08mg of calcium peroxide, 0.8mg of fumaric acid and 14mg of anionic polyacrylamide per liter of the muddy water mixture were used.
Example 7
The difference between this example and example 6 is:
10mg of polyaluminum chloride, 7mg of modified water glass, 2mg of sodium stearoyl lactylate, 0.03mg of calcium peroxide, 0.4mg of fumaric acid and 14mg of anionic polyacrylamide were used per liter of the muddy water mixture.
Comparative example 1
The differences between this comparative example and example 1 are: conventional commercially available water glass was used, and modified water glass was not used.
Comparative example 2
The differences between this comparative example and example 1 are: conventional commercially available sodium lactate was used, and sodium stearoyl lactylate was not used.
Test examples
The mud-water mixture to be treated comes from the downstream riverway of the Changhua river, the water content is 64.9 +/-3.4%, the experimental time is rainy season in the summer of Hainan, the algae are highly developed, and the water quality of inlet water is shown in the table 1. 5 sampling points per test item were selected and the average value of the sampling test was taken, 5 replicates per treatment group. SS is determined gravimetrically, TP is determined spectrophotometrically with ammonium molybdate, turbidity is determined with a turbidity meter, COD Cr The determination is carried out by a potassium dichromate method.
TABLE 1 quality of inlet water (x + -S)
| SS | TP | COD Cr | Turbidity of water | |
| Concentration of | 149.2±18.9mg/L | 2.04±0.3mg/L | 219.0±17.4mg/L | 191.4±15.4NTU |
TABLE 2 effluent quality (x + -S)
The results show that the results of various indexes in the examples are obviously superior to those in the comparative examples, the SS removal rate reaches 98%, the TP removal rate reaches 94%, and the COD is Cr The removal rate reaches 96%, the turbidity reduction rate reaches 99%, and the water content reduction rate reaches 70%.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. A chemical combination agent for rapid separation of muddy water and purification of water quality is characterized by comprising the following components in percentage by weight: 10-17 mg of polyaluminum chloride, 3-7 mg of modified water glass, 1-2 mg of sodium stearyl lactate, 0.03-0.08 mg of calcium peroxide, 0.4-0.8 mg of fumaric acid and 10-14 mg of anionic polyacrylamide are used in each liter of the muddy water mixture, and the modified water glass is as follows: adjusting the pH value of water to 5.0-6.0, adding a silane coupling agent, uniformly mixing, adding water glass, uniformly mixing in a water bath at 50-60 ℃, keeping the mixing rotation speed at 50-100 rpm, and dropwise adding acrylic acid, wherein the mass ratio of the silane coupling agent to the water glass to the acrylic acid to the water is (0.2-0.3): (8-9): (1-1.2): (1-2).
2. The method for using the chemical combination agent for rapid separation of sludge and water and purification of water as claimed in claim 1, which comprises: adding polyaluminum chloride and modified water glass into the muddy water mixture, stirring at 50-100 rpm for 3-5 min, precipitating for 30-60 min, recovering supernatant, sequentially adding sodium stearyl lactate, calcium peroxide and fumaric acid into the supernatant, stirring at 50-100 rpm for 3-5 min, adding anionic polyacrylamide, stirring at 50-100 rpm for 3-5 min, and standing for at least 30 min.
3. The method of claim 2, wherein 1-1.7 mg sodium stearoyl lactylate, 0.03-0.05 mg calcium peroxide, and 0.4-0.6 mg fumaric acid are added per liter of the supernatant.
4. The method of claim 2, wherein 10 to 13mg of anionic polyacrylamide per liter of the supernatant is added.
5. The method as claimed in claim 2, wherein 10 to 17mg of polyaluminum chloride and 3 to 7mg of modified water glass are used per liter of the slurry mixture.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010570980.4A CN111717970B (en) | 2020-06-22 | 2020-06-22 | Chemical composition agent and method for rapid separation of muddy water and purification of water |
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| CN111717970B true CN111717970B (en) | 2022-09-16 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104045188A (en) * | 2014-06-26 | 2014-09-17 | 常州大学 | Method for removing iron ions in drinking-water-level polyaluminum chloride |
| CN104292386A (en) * | 2014-09-26 | 2015-01-21 | 中国石油天然气集团公司 | Composite flocculating agent for flocculation treatment of fracturing flow-back fluid and preparation method thereof |
| CN105016496A (en) * | 2015-08-02 | 2015-11-04 | 宁波保税区维迪克环保科技有限公司 | Composite water treating agent and preparation method thereof |
| CN106315789A (en) * | 2016-08-19 | 2017-01-11 | 齐立军 | Sterilization composition for microbial pollution of industrial water system |
| CN107324507A (en) * | 2017-06-30 | 2017-11-07 | 安徽省黄淮兽药有限公司 | A kind of microorganism improver of water quality |
| CN107986527A (en) * | 2017-12-08 | 2018-05-04 | 中科协创环境科技江苏有限公司 | The minimizing technology of lead in sewage |
| CN110372078A (en) * | 2019-07-03 | 2019-10-25 | 合山市春旭环保科技有限责任公司 | A kind of high efficiency composition flocculant and preparation method thereof |
| CN110902833A (en) * | 2019-11-27 | 2020-03-24 | 江苏江达生态科技有限公司 | Ecological restoration method for urban lakes |
-
2020
- 2020-06-22 CN CN202010570980.4A patent/CN111717970B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104045188A (en) * | 2014-06-26 | 2014-09-17 | 常州大学 | Method for removing iron ions in drinking-water-level polyaluminum chloride |
| CN104292386A (en) * | 2014-09-26 | 2015-01-21 | 中国石油天然气集团公司 | Composite flocculating agent for flocculation treatment of fracturing flow-back fluid and preparation method thereof |
| CN105016496A (en) * | 2015-08-02 | 2015-11-04 | 宁波保税区维迪克环保科技有限公司 | Composite water treating agent and preparation method thereof |
| CN106315789A (en) * | 2016-08-19 | 2017-01-11 | 齐立军 | Sterilization composition for microbial pollution of industrial water system |
| CN107324507A (en) * | 2017-06-30 | 2017-11-07 | 安徽省黄淮兽药有限公司 | A kind of microorganism improver of water quality |
| CN107986527A (en) * | 2017-12-08 | 2018-05-04 | 中科协创环境科技江苏有限公司 | The minimizing technology of lead in sewage |
| CN110372078A (en) * | 2019-07-03 | 2019-10-25 | 合山市春旭环保科技有限责任公司 | A kind of high efficiency composition flocculant and preparation method thereof |
| CN110902833A (en) * | 2019-11-27 | 2020-03-24 | 江苏江达生态科技有限公司 | Ecological restoration method for urban lakes |
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