CN110054323B - Gel material for treating organic oil film pollutants in sewage and application method thereof - Google Patents
Gel material for treating organic oil film pollutants in sewage and application method thereof Download PDFInfo
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- CN110054323B CN110054323B CN201910454533.XA CN201910454533A CN110054323B CN 110054323 B CN110054323 B CN 110054323B CN 201910454533 A CN201910454533 A CN 201910454533A CN 110054323 B CN110054323 B CN 110054323B
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- sewage
- oil film
- organic oil
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- gel material
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
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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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F1/40—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
- C02F1/68—Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water
- C02F1/681—Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water by addition of solid materials for removing an oily layer on water
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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
- C02F2001/007—Processes including a sedimentation 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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
Abstract
The invention discloses a gel material for treating organic oil film pollutants in sewage and an application method thereof. The prepared gel material has good removal effect on alkane, aromatic compounds, amine compounds and the like in sewage, and has the advantages of simple production process, no toxicity, low cost, environmental friendliness and market application prospect. The main components of the gel material comprise: polyacrylamide, chitosan, 12-hydroxystearic acid and biphenyl derivatives.
Description
Technical Field
The invention belongs to the technical field of sewage treatment, and particularly relates to a gel material for treating organic oil film pollutants in sewage and an application method thereof.
Background
The residual organic solvent and other organic matters in the industrial wastewater have COD of over 2000 mg, and some COD can reach tens of thousands to hundreds of thousands mg/L. The industrial wastewater contains toxic organic matters, wherein aromatic compounds and heterocyclic compounds are taken as main components. In addition, the organic wastewater also contains sulfides, nitrides, heavy metals and the like, and organic pollutants contained in the organic wastewater are not easy to biodegrade and have complex structures. The waste water has poor biochemical property and toxicity to microorganisms, and is difficult to treat by a common biochemical method. These waste waters give off offensive odors, which adversely affect the surrounding environment. In addition, with the rapid development of global oil shipping and large-scale marine oil development, the risk of oil pollution is correspondingly increased, and serious threat is brought to marine ecological environment. Therefore, the development of efficient treatment technology for treating organic oil film pollutants and petroleum pollutants in sewage is urgent.
More and more researchers have recently developed methods for treating organic oil film contaminants in wastewater. The principle of the method is that an organic oil film on the water surface is changed into a semi-solid gel chemical with reduced fluidity, so that the diffusion of the organic oil film can be prevented, and the organic oil film on the water surface can be recovered by a physical salvage method, so that the method is called as a chemical oil fence.
The phase-selective gelling agent studied at present is used for treating an organic oil film in wastewater, and is mainly used for uniformly dispersing molecules of the gelling agent into organic oil film pollutants by using a cosolvent method (i.e. organic solvent is required to be additionally added to dissolve the gelling agent) to form gel with the pollutants. However, the method has the fatal disadvantage that new pollution can be formed by additionally adding organic solvent, and secondary pollution is caused. Meanwhile, an organic solvent is additionally added, so that the cost for treating organic oil film pollutants in the sewage is increased. Therefore, the method does not need a cosolvent, and utilizes the waste heat generated in the production of a factory to heat a sewage system, thereby being more in line with the practical production application.
Disclosure of Invention
The invention aims to provide a gel material which can remove an organic oil film, has low cost and no secondary pollution and is used for treating organic oil film pollutants in industrial wastewater, and an application method thereof.
The invention relates to a gel material for treating organic oil film pollutants in sewage, which is prepared from the following raw materials in parts by weight: 10-30 parts of polyacrylamide, 5-20 parts of chitosan, 10-40 parts of 12-hydroxystearic acid, 10-70 parts of biphenyl derivative and 5-10 parts of residual functional components.
The biphenyl derivative is 4-semifluoroalkoxy-4' -alkoxy biphenyl.
The functional component adopts cellulose.
Further, the application method comprises the following steps:
(1) uniformly mixing the raw materials according to the weight part ratio to prepare a gel material;
(2) adding the gel material obtained in the step (1) into sewage containing engine oil membrane pollutants at the temperature of 70-80 ℃ and the rotating speed of 500-700 rpm;
(3) stirring the sewage obtained in the step (2) for 0.5-1h at the temperature of 70-80 ℃ and the rotating speed of 500-700 rpm;
(4) discharging the sewage obtained in the step (3) to a static pool, cooling and standing for 5-12h, wherein organic oil film pollutant gel appears on the sewage surface of the static pool;
(5) intercepting organic oil film pollutant gel by the sewage obtained in the step (4) through a sewage treatment grid at the flow speed of Reynolds number (Re) < 300;
(6) and (5) recovering and treating the organic oil film pollutant gel obtained in the step (5).
Furthermore, when the raw materials in the step (1) are mixed, the raw materials are powdery bodies, and the particle size is less than 30 meshes.
Further, the sewage in the step (2) does not contain sludge floc, and the pH value is 2-13.
The gel material for treating sewage, prepared by the invention, has a good effect of removing an organic oil film, and is simple in process, low in cost, free of secondary pollution, green and environment-friendly.
Detailed Description
Example 1:
a gel material for treating organic oil film pollutants in sewage is prepared from the following raw materials in parts by weight: 10 parts of polyacrylamide, 10 parts of chitosan 5, 12-hydroxystearic acid, 4-half fluoroalkoxy-4' -alkoxy biphenyl 70 parts, and the balance of a functional component 5.
The application method further comprises the following steps:
(1) uniformly mixing the raw materials according to a ratio to prepare a gel material;
(2) adding the gel material obtained in the step (1) into sewage containing organic oil film pollutants such as benzene, toluene, aniline and the like at the temperature of 70-80 ℃ and the rotating speed of 500-700 rpm;
(3) stirring the sewage obtained in the step (2) for 0.5-1h at the temperature of 70-80 ℃ and the rotating speed of 500-700 rpm;
(4) discharging the sewage obtained in the step (3) to a static pool, cooling and standing for 5-12h, wherein organic oil film pollutant gel appears on the sewage surface of the static pool;
(5) intercepting organic oil film pollutant gel by the sewage obtained in the step (4) through a sewage treatment grid at the flow speed of Reynolds number (Re) < 300;
(6) and (5) recovering and treating the organic oil film pollutant gel obtained in the step (5).
TABLE 1
Benzene toluene aniline
The content of sewage is 5 mg/L, 8 mg/L and 150 mg/L
The residue after treatment was 0.2 mg/L, 2.0 mg/L.
Example 2
A gel material for treating organic oil film pollutants in sewage is prepared from the following raw materials in parts by weight: 20 parts of polyacrylamide, 20 parts of chitosan, 20 parts of 12-hydroxystearic acid, 30 parts of biphenyl derivatives and 10 parts of residual functional components.
The application method further comprises the following steps:
(1) uniformly mixing the raw materials according to a ratio to prepare a gel material;
(2) adding the gel material obtained in the step (1) into sewage containing organic oil film pollutants such as petroleum hydrocarbon (C10-C40), low-carbon olefin and derivatives thereof at the temperature of 70-80 ℃ and the rotation speed of 500-700 rpm;
(3) stirring the sewage obtained in the step (2) for 0.5-1h at the temperature of 70-80 ℃ and the rotating speed of 500-700 rpm;
(4) discharging the sewage obtained in the step (3) to a static pool, cooling and standing for 5-12h, wherein organic oil film pollutant gel appears on the sewage surface of the static pool;
(5) intercepting organic oil film pollutant gel by the sewage obtained in the step (4) through a sewage treatment grid at the flow speed of Reynolds number (Re) < 300;
(6) and (5) recovering and treating the organic oil film pollutant gel obtained in the step (5).
TABLE 2
Petroleum hydrocarbon trichloroethylene
The content of the sewage is 50 mg/L and 4 mg/L
The residual amount after treatment was 4 mg/L0.3 mg/L.
Example 3
A gel material for treating organic oil film pollutants in sewage is prepared from the following raw materials in parts by weight: 30 parts of polyacrylamide, 10 parts of chitosan, 40 parts of 12-hydroxystearic acid, 15 parts of biphenyl derivatives and 5 parts of residual functional components.
The application method further comprises the following steps:
(1) uniformly mixing the raw materials according to a ratio to prepare a gel material;
(2) adding the gel material obtained in the step (1) into sewage containing organic oil film pollutants such as mineral oil, gear oil, animal and vegetable oil and the like at the temperature of 70-80 ℃ and the rotation speed of 500-700 rpm;
(3) stirring the sewage obtained in the step (2) for 0.5-1h at the temperature of 70-80 ℃ and the rotating speed of 500-700 rpm;
(4) discharging the sewage obtained in the step (3) to a static pool, cooling and standing for 5-12h, wherein organic oil film pollutant gel appears on the sewage surface of the static pool;
(5) intercepting organic oil film pollutant gel by the sewage obtained in the step (4) through a sewage treatment grid at the flow speed of Reynolds number (Re) < 300;
(6) and (5) recovering and treating the organic oil film pollutant gel obtained in the step (5).
TABLE 3
Mineral oil gear oil animal and vegetable oil
The content of the sewage is 40 mg/L, 70 mg/L and 200 mg/L
The residual amount after treatment was 8 mg/L, 7 mg/L, 15 mg/L.
As can be seen from tables 1-3, the sewage containing organic oil film pollutants can reach the discharge standard after being treated by the gel material (GB-8978-.
Claims (2)
1. A gel material for treating organic oil film pollutants in sewage is characterized in that: the traditional Chinese medicine is prepared from the following raw materials in parts by weight: 10-30 parts of polyacrylamide, 5-20 parts of chitosan, 10-40 parts of 12-hydroxystearic acid, 10-70 parts of biphenyl derivative and 5-10 parts of residual functional components; the biphenyl derivative is 4-semifluoroalkoxy-4' -alkoxy biphenyl, and the functional component is cellulose.
2. The gel material for treating organic oil film contaminants in sewage according to claim 1, wherein the application method comprises the following steps:
(a) uniformly mixing the raw materials according to the weight ratio to prepare a gel material;
(b) adding the gel material obtained in the step (a) into sewage containing the engine oil membrane pollutants at the temperature of 70-80 ℃ and the rotating speed of 500-700 rpm;
(c) stirring the sewage obtained in the step (b) at the temperature of between 70 and 80 ℃ and the rotating speed of between 500 and 700 rpm for 0.5 to 1 hour;
(d) discharging the sewage obtained in the step (c) to a static pool, cooling and standing for 5-12h, wherein organic oil film pollutant gel appears on the sewage surface of the static pool;
(e) intercepting organic oil film pollutant gel by the sewage obtained in the step (d) through a sewage treatment grid at the flow speed of which the Reynolds number is less than 300;
(f) and (e) recovering and treating the organic oil film pollutant gel obtained in the step (e).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910454533.XA CN110054323B (en) | 2019-05-29 | 2019-05-29 | Gel material for treating organic oil film pollutants in sewage and application method thereof |
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| JP5119441B2 (en) * | 2005-02-25 | 2013-01-16 | 国立大学法人鳥取大学 | Water-soluble processing fluid recycling method, water-soluble processing fluid recycling device, oil-containing wastewater treatment method, and oil-containing wastewater treatment device |
| JP5324070B2 (en) * | 2007-08-27 | 2013-10-23 | スリーエム イノベイティブ プロパティズ カンパニー | Polymer gel structure and method for producing the same |
| DK2862843T3 (en) * | 2012-06-19 | 2018-08-13 | Obschestvo S Ogranichennoj Otvetsvennostyu Npo Biomikrogeli | POLYSACCHARID MICROGULES FOR CLEANING WATER FOR Crude OIL AND Crude Oil Products AND PROCEDURES FOR USING THESE VARIETIES |
| JP6288618B2 (en) * | 2014-03-06 | 2018-03-07 | 国立大学法人山口大学 | Novel aromatic compounds having perfluoroalkyl groups at both ends |
| CN109266317B (en) * | 2017-07-18 | 2021-04-13 | 中国石油化工股份有限公司 | Anti-collapse plugging agent for drilling fluid, preparation method of anti-collapse plugging agent and drilling fluid |
| CN108421534B (en) * | 2018-02-08 | 2020-10-20 | 中山大学 | Chitosan gel material, preparation method thereof, wastewater treatment method and application |
| CN108503858B (en) * | 2018-04-02 | 2020-11-20 | 湖北大学 | Hydrogel and oil-water separator as well as preparation method and application thereof |
| US20210395479A1 (en) * | 2018-09-25 | 2021-12-23 | Aerogel Technologies, Llc | High-temperature polymer aerogel composites |
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