CN106542626B - Printing and dyeing sewage flocculant and preparation method thereof - Google Patents
Printing and dyeing sewage flocculant and preparation method thereof Download PDFInfo
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- CN106542626B CN106542626B CN201611121117.0A CN201611121117A CN106542626B CN 106542626 B CN106542626 B CN 106542626B CN 201611121117 A CN201611121117 A CN 201611121117A CN 106542626 B CN106542626 B CN 106542626B
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- printing
- magnesium
- zeolite
- hydrotalcite
- flocculant
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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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- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
-
- 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
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
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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
-
- 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
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/285—Treatment of water, waste water, or sewage by sorption using synthetic organic sorbents
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/286—Treatment of water, waste water, or sewage by sorption using natural organic sorbents or derivatives thereof
-
- 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
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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)
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Abstract
The invention provides a printing and dyeing sewage flocculant, and relates to the technical field of sewage treatment. The chitosan and the zeolite are mainly used for adsorbing various metal ions in the municipal sewage, and the polyurethane component not only can enhance the bonding effect among the raw materials and prevent the raw materials from being dispersed into water in the treatment process, but also has a good adsorption effect on oxygen-consuming organic matters; the cattail wool fiber is added to enhance the adsorption capacity to grease; the magnesium-aluminum hydrotalcite is added, because hydroxides formed by magnesium and aluminum are low-solubility substances, the surface area of the hydrotalcite structure is large, and adsorbates can be attached to the surface of the hydrotalcite, so that the coagulation effect of the flocculant can be improved.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a printing and dyeing sewage flocculant and a preparation method thereof.
Background
Water resource pollution is a serious social problem, and heavy metal ions, pesticides, insecticides, environmental hormones and the like in sewage pose great threats to human health. Years of practice and research show that adding a flocculating agent to coagulate pollutants in sewage in the wastewater treatment process is one of effective methods, and the method has the characteristics of simple process and low cost, so that researchers at home and abroad pay great attention to the development of the flocculating agent.
The printing and dyeing wastewater is wastewater discharged from printing and dyeing factories which mainly process cotton, hemp, chemical fibers and blended products thereof. The amount of the printing and dyeing wastewater is large, 100-200 tons of water are consumed for each 1 ton of textiles processed by printing and dyeing, and 80-90% of the water becomes wastewater. The textile printing and dyeing wastewater has the characteristics of large water quantity, high organic pollutant content, large alkalinity, large water quality change and the like, belongs to one of industrial wastewater difficult to treat, and contains dye, slurry, auxiliary agent, oil agent, acid and alkali, fiber impurities, sand substances, inorganic salt and the like.
In recent years, with the increasing oil crisis and the increasing awareness of the environment protection of human beings, researchers have begun to continuously explore various natural, cheap and efficient flocculating materials.
Disclosure of Invention
The invention aims to provide a printing and dyeing sewage flocculant and a preparation method thereof, and aims to solve the technical problem.
The printing and dyeing sewage flocculant comprises the following components in percentage by weight: 10-15% of chitosan, 15-25% of magnesium aluminum hydrotalcite, 5-10% of waterborne polyurethane, 3-8% of cattail wool fiber, 4-10% of water and the balance of zeolite.
Preferably, the printing and dyeing sewage flocculant comprises the following components in percentage by weight: 10-12% of chitosan, 20-25% of magnesium aluminum hydrotalcite, 8-10% of waterborne polyurethane, 5-8% of cattail wool fiber, 4-6% of water and the balance of zeolite.
Preferably, the particle size of the magnesium-aluminum hydrotalcite is 50-100 μm.
Preferably, the zeolite has a particle size of 10 to 30 μm.
A preparation method of a printing and dyeing sewage flocculant comprises the following steps:
A. respectively crushing zeolite and aluminum-magnesium hydrotalcite;
B. preparing chitosan into a solution with the concentration of 10-15%, adding zeolite powder, uniformly dispersing at the stirring speed of 400-500rpm, adjusting the stirring speed to 120-150rpm, adding waterborne polyurethane, adjusting the viscosity to 500-800cps, adjusting the stirring speed to 250-300rpm, and slowly adding magnesium-aluminum hydrotalcite powder and cattail wool fibers;
C. spray drying to obtain the final product.
The invention has the following beneficial effects: the printing and dyeing sewage flocculant provided by the invention mainly uses chitosan and zeolite to adsorb various metal ions in urban sewage, and the polyurethane component can enhance the bonding effect among raw materials, prevent the raw materials from being dispersed into a water body in the treatment process, and has a very good adsorption effect on oxygen-consuming organic matters; the cattail wool fiber is added to enhance the adsorption capacity to grease; the magnesium-aluminum hydrotalcite is added, because hydroxides formed by magnesium and aluminum are low-solubility substances, the surface area of the hydrotalcite structure is large, and adsorbates can be attached to the surface of the hydrotalcite, so that the coagulation effect of the flocculant can be improved.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below.
Detailed Description
The following is a detailed description of embodiments of the invention, but the invention can be implemented in many different ways, as defined and covered by the claims.
Example 1
The printing and dyeing sewage flocculant comprises the following components in percentage by weight: 11% of chitosan, 22% of magnesium aluminum hydrotalcite, 9% of waterborne polyurethane, 7% of cattail wool fiber, 5% of water and the balance of zeolite.
The particle size of the magnesium-aluminum hydrotalcite is 50-100 μm.
The particle size of the zeolite is 10-30 μm.
A preparation method of a printing and dyeing sewage flocculant comprises the following steps:
A. respectively crushing zeolite and aluminum-magnesium hydrotalcite;
B. preparing chitosan into a solution with the concentration of 12%, adding zeolite powder, uniformly dispersing at the stirring speed of 450rpm, adjusting the stirring speed to 125rpm, adding waterborne polyurethane, adjusting the viscosity to 700cps, adjusting the stirring speed to 275rpm, and slowly adding magnesium-aluminum hydrotalcite powder and cattail wool fibers;
C. spray drying to obtain the final product.
Example 2
The printing and dyeing sewage flocculant comprises the following components in percentage by weight: 12% of chitosan, 20% of magnesium aluminum hydrotalcite, 10% of waterborne polyurethane, 5% of cattail wool fiber, 6% of water and the balance of zeolite.
The particle size of the magnesium-aluminum hydrotalcite is 50-100 μm.
The particle size of the zeolite is 10-30 μm.
A preparation method of a printing and dyeing sewage flocculant comprises the following steps:
A. respectively crushing zeolite and aluminum-magnesium hydrotalcite;
B. preparing chitosan into a solution with the concentration of 10%, adding zeolite powder, uniformly dispersing at the stirring speed of 500rpm, adjusting the stirring speed to 120rpm, adding waterborne polyurethane, adjusting the viscosity to 800cps, adjusting the stirring speed to 250rpm, and slowly adding magnesium-aluminum hydrotalcite powder and cattail wool fibers;
C. spray drying to obtain the final product.
Example 3
The printing and dyeing sewage flocculant comprises the following components in percentage by weight: 10% of chitosan, 25% of magnesium aluminum hydrotalcite, 8% of waterborne polyurethane, 8% of cattail wool fiber, 4% of water and the balance of zeolite.
The particle size of the magnesium-aluminum hydrotalcite is 50-100 μm.
The particle size of the zeolite is 10-30 μm.
A preparation method of a printing and dyeing sewage flocculant comprises the following steps:
A. respectively crushing zeolite and aluminum-magnesium hydrotalcite;
B. preparing chitosan into a solution with the concentration of 15%, adding zeolite powder, uniformly dispersing at the stirring speed of 400rpm, adjusting the stirring speed to 150rpm, adding waterborne polyurethane, adjusting the viscosity to 500cps, adjusting the stirring speed to 300rpm, and slowly adding magnesium-aluminum hydrotalcite powder and cattail wool fibers;
C. spray drying to obtain the final product.
The treatment effect of the flocculants of the examples 1 to 3 on the municipal sewage is detected, and the following data are obtained:
| COD（mg/L） | COD removal Rate (%) | BOD（mg/L） | BOD removal Rate (%) | Heavy Metal ion content (mg/L) | Removal rate of heavy metal ion (%) | |
| Example 1 | 25 | ＞99.5 | 5 | ＞99.5 | 1.45 | 98.12 |
| Example 2 | 25 | ＞99.5 | 5 | ＞99.5 | 1.45 | 97.52 |
| Example 3 | 25 | ＞99.5 | 5 | ＞99.5 | 1.45 | 97.77 |
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. 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 (4)
1. The printing and dyeing sewage flocculant is characterized by comprising the following components in percentage by weight: 10-15% of chitosan, 15-25% of magnesium aluminum hydrotalcite, 5-10% of waterborne polyurethane, 3-8% of cattail wool fiber, 4-10% of water and the balance of zeolite; the preparation method of the printing and dyeing sewage flocculant comprises the following steps:
A. respectively crushing zeolite and aluminum-magnesium hydrotalcite;
B. preparing chitosan into a solution with the concentration of 10-15%, adding zeolite powder, uniformly dispersing at the stirring speed of 400-500rpm, adjusting the stirring speed to 120-150rpm, adding waterborne polyurethane, adjusting the viscosity to 500-800cps, adjusting the stirring speed to 250-300rpm, and slowly adding magnesium-aluminum hydrotalcite powder and cattail wool fibers;
C. spray drying to obtain the final product.
2. The printing and dyeing wastewater flocculant of claim 1, which comprises the following components in percentage by weight: 10-12% of chitosan, 20-25% of magnesium aluminum hydrotalcite, 8-10% of waterborne polyurethane, 5-8% of cattail wool fiber, 4-6% of water and the balance of zeolite.
3. The flocculant of printing and dyeing wastewater according to claim 1 or 2, wherein the particle size of the magnesium aluminum hydrotalcite is 50 to 100 μm.
4. The flocculant according to claim 1 or 2, wherein the zeolite has a particle size of 10 to 30 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611121117.0A CN106542626B (en) | 2016-12-08 | 2016-12-08 | Printing and dyeing sewage flocculant and preparation method thereof |
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| CN201611121117.0A CN106542626B (en) | 2016-12-08 | 2016-12-08 | Printing and dyeing sewage flocculant and preparation method thereof |
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| Publication Number | Publication Date |
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| CN106542626A CN106542626A (en) | 2017-03-29 |
| CN106542626B true CN106542626B (en) | 2020-05-19 |
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| CN111661978B (en) * | 2020-05-28 | 2023-08-01 | 浙江美福石油化工有限责任公司 | High-oil-content wastewater treatment process |
| CN116081757A (en) * | 2023-04-11 | 2023-05-09 | 东莞市华清环保工程有限公司 | Preparation method of grinding wastewater stabilizing powder |
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| CN102580686B (en) * | 2012-01-13 | 2013-10-09 | 重庆大学 | Oil refining wastewater composite treating agent and preparation method thereof |
| CN102674512B (en) * | 2012-05-02 | 2015-01-21 | 中国科学院生态环境研究中心 | Composite flocculant for treating anionic dye wastewater and preparation method for composite flocculant |
| CN105884084A (en) * | 2016-06-01 | 2016-08-24 | 长兴新天龙印染有限公司 | Textile wastewater biomass recycling treatment technology |
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Effective date of registration: 20200415 Address after: 214200 Gaocheng Foreign Investment Industrial Park (Gaoyao Village), Yixing City, Wuxi City, Jiangsu Province Applicant after: JIANGSU RONGHUI ENVIRONMENTAL ENGINEERING Co.,Ltd. Address before: 323000 Lishui City, Liandu District, the town of Lian Yao Qing village village, No. 54 Applicant before: Ying Jianjun |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
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Denomination of invention: The invention relates to a flocculant for printing and dyeing wastewater and a preparation method thereof Effective date of registration: 20210831 Granted publication date: 20200519 Pledgee: Wuxi rural commercial bank Limited by Share Ltd. Yixing branch Pledgor: JIANGSU RONGHUI ENVIRONMENTAL ENGINEERING Co.,Ltd. Registration number: Y2021320010338 |