CN111732151A - Organic wastewater treating agent, preparation method and organic wastewater treating method - Google Patents
Organic wastewater treating agent, preparation method and organic wastewater treating method Download PDFInfo
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- CN111732151A CN111732151A CN202010650513.2A CN202010650513A CN111732151A CN 111732151 A CN111732151 A CN 111732151A CN 202010650513 A CN202010650513 A CN 202010650513A CN 111732151 A CN111732151 A CN 111732151A
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- organic wastewater
- wastewater treating
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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
- C02F1/285—Treatment of water, waste water, or sewage by sorption using synthetic organic sorbents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic 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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention discloses an organic wastewater treating agent, a preparation method and an organic wastewater treating method. The organic wastewater treating agent is prepared from the following raw materials by a conventional method: 100 parts of bentonite, 2-6 parts of tetradecyl sulphobetaine and 0.1-0.7 part of isopropyl distearoyloxy aluminate. The organic wastewater treating agent disclosed by the invention has a good adsorption effect on organic pollutants.
Description
Technical Field
The invention relates to an organic wastewater treating agent, a preparation method and an organic wastewater treating method.
Background
The industrial wastewater comprises production wastewater, production sewage, organic wastewater and cooling water, and refers to wastewater and waste liquid generated in the industrial production process, wherein the wastewater and the waste liquid contain industrial production materials, intermediate products, byproducts and pollutants generated in the production process, which are lost along with water. The industrial wastewater has various types and complex components. Among them, the treatment of organic wastewater is the most difficult, which has become the pain point of the industry.
At present, the bentonite is adopted to treat the organic wastewater, but the effect is poor. Further, the bentonite modified by cetyl trimethyl ammonium bromide has improved organic wastewater treatment effect, but a new technical problem is generated, namely, bromide ions have a lot of influence on the survival and the multiplication of microorganisms, and negative influence is caused on the subsequent further biological purification.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide an organic wastewater treatment agent, a preparation method, and an organic wastewater treatment method.
The invention takes the bentonite as a core raw material, creatively adopts the amphoteric surfactant and combines the aluminate coupling agent to modify the bentonite, thereby achieving the purpose of improving the adsorption effect of the organic wastewater treatment agent on organic pollutants.
The technical scheme adopted by the invention for solving the problems is as follows:
an organic wastewater treating agent is prepared from the following raw materials by a conventional method: bentonite, tetradecyl sulfobetaine and isopropyl distearoyloxy aluminate.
Preferably, the organic wastewater treatment agent is prepared by the following raw materials according to a conventional method: 100 parts of bentonite, 2-6 parts of tetradecyl sulphobetaine and 0.1-0.7 part of isopropyl distearoyloxy aluminate.
A preparation method of an organic wastewater treatment agent comprises the following steps:
(1) mixing 100 parts by weight of bentonite, 2-6 parts by weight of tetradecyl sulphobetaine and 0.1-0.7 part by weight of isopropyl distearoyloxy aluminate;
(2) adding water and stirring;
(3) drying and crushing.
Preferably, in the step (2), the adding amount of water is 30-80 parts by weight, and water is added and stirred uniformly; in the step (3), the mixture is dried at the temperature of 100-.
An organic wastewater treatment method adopts the organic wastewater treatment agent to treat wastewater. The mass ratio of the organic wastewater treatment agent to the wastewater is (0.1-5): 1000, preferably (0.5-3): 1000.
the invention has the beneficial effects that:
according to the invention, bentonite is taken as a core raw material, and an amphoteric surfactant tetradecyl sulphobetaine is creatively adopted and is modified by combining isopropyl distearoyloxy aluminate, so that the effect of improving the adsorption effect of an organic wastewater treatment agent on organic pollutants is achieved.
The amphoteric surfactant tetradecyl sulfobetaine has a structure with both anionic groups and cationic groups, and can enlarge the interlayer spacing and specific surface area of montmorillonite contained in bentonite, so as to facilitate adsorption, precipitation and separation of macromolecular organic pollutants. The isopropyl distearoyl acyloxy aluminate can better adsorb organic dirt in the purification treatment of organic waste water, improve the hydrophobic property of the isopropyl distearoyl acyloxy aluminate, and accelerate the precipitation and separation of particles. In addition, the isopropyl distearoyloxy aluminate and tetradecyl sulfobetaine form the composite pillared agent, so that the interlayer spacing and the specific surface area of montmorillonite contained in the bentonite can be further enlarged, and the synergistic effect is realized.
In summary, the present invention exerts the effect of specifically and synergistically bringing about the desired technical effect by using bentonite/tetradecylsulfonobetaine/isopropyldistearoyloxyaluminate in combination in the formulation of an organic wastewater treatment agent, and the object of the present invention cannot be achieved by the absence of either component, which can be clearly verified from the results of the test examples described later.
The organic wastewater treating agent disclosed by the invention has a good adsorption effect on organic pollutants.
Detailed Description
In the examples and comparative examples of the present invention, all the equipment and materials are commercially available or commonly used in the industry, unless otherwise specified, the materials are based on 100% active material in the formulation, and the methods described in the following examples and comparative examples are conventional in the art, unless otherwise specified.
Bentonite with 400 meshes, 80 wt% of montmorillonite content and 2.2g/cm density3Apparent viscosity of 100mpa.s, new building materials of Shijiazhuangyuan stone, Ltd.
Tetradecyl sulfobetaine, CAS No.: 14933-09-6, English name: 3- (N, N-dimethyltyrosylamonio) propanesulfonate.
Isopropyl distearoyloxyaluminate, CAS No.: 5919-73-3. English name: disterazoyl isoproxy aluMinate.
Examples 1 to 9:
weighing the raw materials according to the data of the examples 1 to 9 respectively corresponding to the data in the table 1, and uniformly mixing; adding 50 g of water and stirring for 30 minutes until the mixture is uniform; drying at 110 ℃ to constant weight, and then crushing into 200-mesh particles to obtain the organic wastewater treatment agent.
Table 1: the organic wastewater treatment agent raw material formula is shown in Table unit: keke (Chinese character of 'Keke')
Test example 1:
the same industrial wastewater is treated. Water quality data of original industrial wastewater: COD400 mg/L. 1 g of the organic wastewater treatment agent of examples 1 to 9 was added to each kg of the original industrial wastewater. Stirring for 10 minutes at the rotating speed of 300 revolutions per minute; and standing for 1 hour, and detecting the COD of the treated wastewater so as to calculate the removal rate of the COD. Each experiment was repeated 10 times to take an average. The test result P is less than 0.05, and the significant difference exists.
Test example 2:
the same nitrophenol wastewater is treated. The concentration of nitrophenol in the original nitrophenol wastewater is 50 mg/L. 2g of the organic wastewater treatment agent of examples 1 to 9 was added to each kg of the nitrophenol wastewater. Stirring for 10 minutes at the rotating speed of 300 revolutions per minute; and standing for 1 hour, detecting the content of nitrophenol in the treated wastewater, and calculating the removal rate of nitrophenol organic matters. Each experiment was repeated 10 times to take an average. The test result P is less than 0.05, and the significant difference exists.
Table 2: water treatment effect meter
Examples 1-9 were analyzed:
comparing example 1 with example 6 and example 8, the experimental data for example 1 using an aluminate coupling agent, example 6 using a silane coupling agent, and example 8 using a titanate coupling agent, are quite different. Therefore, the compatibility of the aluminate coupling agent with the amphoteric surfactant tetradecyl sulphobetaine and bentonite is better, and the same supporting effect between the aluminate coupling agent and the amphoteric surfactant tetradecyl sulphobetaine is better.
Comparative example 1 and example 5, which differ only in that: the surfactant used in example 1 was the amphoteric surfactant tetradecyl sultaine, example 5 used the cationic surfactant hexadecyltrimethyl ammonium bromide; the effect of the removal rate of COD in the wastewater is greatly different from that of the removal rate of the nitrophenol organic matter.
In summary,
according to the invention, bentonite is taken as a core raw material, and an amphoteric surfactant tetradecyl sulphobetaine is creatively adopted and is modified by combining isopropyl distearoyloxy aluminate, so that the effect of improving the adsorption effect of an organic wastewater treatment agent on organic pollutants is achieved.
The amphoteric surfactant tetradecyl sulfobetaine has a structure with both anionic groups and cationic groups, and can enlarge the interlayer spacing and specific surface area of montmorillonite contained in bentonite, so as to facilitate adsorption, precipitation and separation of macromolecular organic pollutants. The isopropyl distearoyl acyloxy aluminate can better adsorb organic dirt in the purification treatment of organic waste water, improve the hydrophobic property of the isopropyl distearoyl acyloxy aluminate, and accelerate the precipitation and separation of particles. In addition, the isopropyl distearoyloxy aluminate and tetradecyl sulfobetaine form the composite pillared agent, so that the interlayer spacing and the specific surface area of montmorillonite contained in the bentonite can be further enlarged, and the synergistic effect is realized.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts.
Claims (7)
1. An organic wastewater treating agent is prepared from the following raw materials by a conventional method: bentonite, tetradecyl sulfobetaine and isopropyl distearoyloxy aluminate.
2. An organic wastewater treating agent is prepared from the following raw materials by a conventional method: 100 parts of bentonite, 2-6 parts of tetradecyl sulphobetaine and 0.1-0.7 part of isopropyl distearoyloxy aluminate.
3. A preparation method of an organic wastewater treatment agent comprises the following steps:
mixing 100 parts by weight of bentonite, 2-6 parts by weight of tetradecyl sulphobetaine and 0.1-0.7 part by weight of isopropyl distearoyloxy aluminate;
adding water and stirring;
drying and crushing.
4. The method for producing an organic wastewater treatment agent according to claim 3, characterized in that: in the step (2), the water is added in an amount of 30-80 parts by weight, and water is added and stirred uniformly.
5. The method for producing an organic wastewater treatment agent according to claim 3, characterized in that: in the step (3), the mixture is dried at the temperature of 100-.
6. A method for treating organic wastewater by using the organic wastewater treating agent according to claim 1 or 2.
7. The method for treating organic wastewater according to claim 6, wherein the mass ratio of the organic wastewater treating agent to wastewater is (0.1 to 5): 1000, preferably (0.5-3): 1000.
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| CN107282021A (en) * | 2017-08-08 | 2017-10-24 | 中国石油大学(北京) | A kind of organo-mineral complexing bentonite clay material and its preparation method and application |
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| CN105327679A (en) * | 2015-11-01 | 2016-02-17 | 华南理工大学 | Clay adsorption material applied to organic-heavy metal combined pollution in environment and preparation method and application thereof |
| CN107282021A (en) * | 2017-08-08 | 2017-10-24 | 中国石油大学(北京) | A kind of organo-mineral complexing bentonite clay material and its preparation method and application |
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