CN113354025A - Treatment method of oily wastewater - Google Patents
Treatment method of oily wastewater Download PDFInfo
- Publication number
- CN113354025A CN113354025A CN202110631232.7A CN202110631232A CN113354025A CN 113354025 A CN113354025 A CN 113354025A CN 202110631232 A CN202110631232 A CN 202110631232A CN 113354025 A CN113354025 A CN 113354025A
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- oil
- oily wastewater
- resin
- treatment method
- adsorption
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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
- C02F1/286—Treatment of water, waste water, or sewage by sorption using natural organic sorbents or derivatives thereof
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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
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
-
- 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
- C02F2101/32—Hydrocarbons, e.g. oil
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention provides a treatment method of oily wastewater, belonging to the field of wastewater purification. The invention provides a method for treating oily wastewater, which comprises the following steps: and adsorbing and deoiling the oily wastewater by DA201-C series resin. The invention uses DA201-C series resin, and the DA201-C series resin is a kind of ion exchange resin, and compared with the traditional oil removing resin, the adsorption capacity is large, the oil removing is thorough, and the secondary deep oil removing is not needed. The data of the examples show that the oil content of the treated oil-containing wastewater with the oil content of 30-300 ppm is less than 1ppm, the oil removal rate is more than 98.5%, the ethanol recovery rate reaches 99%, and the oil recovery rate is more than 99.8%.
Description
Technical Field
The invention relates to the technical field of wastewater purification, in particular to a treatment method of oily wastewater.
Background
Oily wastewater is common industrial wastewater which is difficult to degrade, and enters the environment to cause serious pollution to plants, soil, water and the like. The oily wastewater has the characteristics of large water quantity, wide pollution range, more complex water quality and difficult biodegradation, so that the treatment of the oily wastewater becomes a difficult project.
At present, the oil is removed in the industry by methods such as ultrasonic oil removal, air floatation, fiber ball adsorption, activated carbon adsorption, resin adsorption and the like. In the prior art, the adsorption capacity of the oil removing resin is below 10g/L, and the problem of small adsorption capacity of the oil removing resin exists, for example, Chinese patent CN201110101239.4 discloses a method for removing oil from a nickel-containing compound aqueous solution by using resin, and the oil removing effect can be achieved by using polystyrene or divinylbenzene resin and active carbon in a combined way.
Disclosure of Invention
In view of the above, the present invention aims to provide a method for treating oil-containing wastewater. The DA201-C series resin used in the treatment method provided by the invention has large oil adsorption capacity.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a method for treating oily wastewater, which comprises the following steps:
and adsorbing and deoiling the oily wastewater by DA201-C series resin.
Preferably, the oil content of the oily wastewater is 30-300 ppm.
Preferably, the oil content in the oil-containing wastewater comprises sulfonated kerosene, an extracting agent and a synergistic agent.
Preferably, the oily wastewater further comprises heavy metal ions, and the heavy metal ions comprise cobalt ions, nickel ions, manganese ions, copper ions and Fe2+And Fe3+One or more of (a).
Preferably, the flow rate of the oily wastewater passing through the DA201-C series resin is 2-20 BV.
Preferably, the temperature of adsorption degreasing is 10-60 ℃.
Preferably, the adsorption degreasing process further comprises a reverse elution regeneration of the degreasing resin with saturated adsorption by using alcohol substances.
Preferably, the alcohol is ethanol.
Preferably, the volume ratio of the alcohol substance to the adsorption saturated degreasing resin is 2-6: 1.
Preferably, a regeneration liquid is obtained after the reverse elution regeneration, the regeneration liquid is rectified and separated to obtain a regenerated alcohol substance and oil, and the regenerated alcohol substance and the oil are recycled.
The invention provides a method for treating oily wastewater, which comprises the following steps: and adsorbing and deoiling the oily wastewater by DA201-C series resin. The invention uses DA201-C series resin, and the DA201-C series resin is a kind of ion exchange resin, and compared with the traditional oil removing resin, the adsorption capacity is large, the oil removing is thorough, and the secondary deep oil removing is not needed. The data of the examples show that for the oily wastewater with the oil content of 30-300 ppm, the content of the treated oil content is less than 1ppm, the oil removal rate is more than 98.5%, the adsorption capacity is 24-55 g/L, the ethanol recovery rate reaches 99%, and the oil recovery rate is more than 99.8%.
Furthermore, the DA201-C series resin is regenerated by reverse elution of ethanol, the reverse elution is more thorough, the elution is simple, secondary pollution cannot be caused after the elution is finished, the toxicity of the ethanol is low, and the elution process is environment-friendly.
Furthermore, the regenerated alcohol substance and the oil component can be recycled, so that resource utilization is realized.
Detailed Description
The invention provides a method for treating oily wastewater, which comprises the following steps:
and adsorbing and deoiling the oily wastewater by DA201-C series resin.
In the invention, the oil content of the oily wastewater is preferably 30-300 ppm, the oil content preferably comprises sulfonated kerosene, an extracting agent and a co-extracting agent, and the extracting agent preferably comprises a P507 extracting agent, a P204 extracting agent and a C272 extracting agent.
In the present invention, the oily wastewater preferably further comprises heavy metal ions, and the heavy metal ions preferably comprise cobalt ions, nickel ions, manganese ions, copper ions, and Fe2+And Fe3+One or more of (a).
In the invention, the concentration of heavy metal ions in the oily wastewater is preferably 0-100 g/L.
The source of the wastewater containing the oil is not particularly limited in the present invention, and any source known to those skilled in the art can be used, specifically, the oily wastewater generated in the hydrometallurgical process.
In the present invention, the source of the DA201-C series resin is not particularly limited, and commercially available products known to those skilled in the art may be used.
In the invention, the flow rate of the oily wastewater passing through the DA201-C series resin is preferably 2-20 BV, and more preferably 5-10 BV.
In the invention, the temperature of adsorption oil removal is preferably 10-60 ℃, and more preferably 30-50 ℃.
In the present invention, the adsorption degreasing preferably further comprises performing reverse elution regeneration on the degreasing resin with saturated adsorption by using an alcohol substance.
In the present invention, the alcohol is preferably ethanol.
In the invention, the volume ratio of the alcohol substance to the adsorption saturated degreasing resin is preferably 2-6: 1, and more preferably 4-5: 1.
In the present invention, the temperature of the alcohol is preferably 30 ℃.
In the invention, during reverse elution regeneration, the flow rate of the alcohol substances passing through the adsorption saturated oil removal resin is preferably 4-5 BV.
In the invention, the reverse elution is regenerated to obtain regenerated liquid, the regenerated liquid is preferably rectified and separated to obtain regenerated alcohol substances and oil components, and the regenerated alcohol substances and the oil components are recycled.
In the present invention, the rectification separation is preferably performed in a rectification separation tower, and the present invention has no particular limitation on the specific parameters of the rectification separation, and the method is well known to those skilled in the art.
In order to further illustrate the present invention, the method for treating oily wastewater provided by the present invention will be described in detail with reference to examples, but they should not be construed as limiting the scope of the present invention.
Example 1
The device comprises the following steps: loading 750mL of DA201-C resin into a resin column
In a glass resin column.
The oily wastewater (containing P507 extractant, synergist and sulfonated kerosene) is introduced into the resin column at the flow rate of 5BV (namely 3.75L/h) by a peristaltic pump. The oily wastewater is raffinate (containing 0.5g/L of cobalt ions) obtained after cobalt is extracted by P507 extracting agent 2-ethylhexyl phosphoric acid mono-2-ethylhexyl ester), the temperature is 50 ℃, the oil content is 40ppm and the total treatment capacity is 460L measured by an infrared oil tester, the oil content is 0.3ppm and the adsorption capacity is 24.35g/L after resin adsorption.
The resin is analyzed by ethanol with the temperature of 30 ℃ and the counter flow of 4BV (namely 3L), the ethanol flow is 2BV, the oil desorption rate is 99.6 percent, the recovery rate of ethanol in a rectifying tower is 99 percent, and the recovery rate of oil in the rectifying tower is 99.8 percent.
Example 2
The device comprises the following steps: loading 750mL of DA201-C resin into a resin column
In a glass resin column.
The oily wastewater (containing P507 extractant, synergist and sulfonated kerosene) is introduced into the resin column at the flow rate of 10BV (7.5L/h) by a peristaltic pump. The oily wastewater is raffinate (containing 0.5g/L of cobalt ions) obtained after cobalt is extracted by P507 extracting agent 2-ethylhexyl phosphoric acid mono-2-ethylhexyl ester), the temperature is 50 ℃, the oil content is 40ppm and the total treatment amount is 460L measured by an infrared oil tester, the oil content is 0.45ppm and the adsorption amount is 24.26g/L after resin adsorption.
The resin is analyzed by ethanol with the temperature of 30 ℃ and the counter flow of 4BV (namely 3L), the ethanol flow is 2BV, the oil desorption rate is 99.6 percent, the recovery rate of ethanol in a rectifying tower is 99 percent, and the recovery rate of oil in the rectifying tower is 99.8 percent.
Example 3
The device comprises the following steps: loading 750mL of DA201-C resin into a resin column
In a glass resin column.
The oily wastewater (containing P507 extractant, synergist and sulfonated kerosene) is introduced into the resin column at the flow rate of 5BV (namely 3.75L/h) by a peristaltic pump. The oily wastewater is raffinate (containing 1.5g/L of nickel ions) obtained after nickel is extracted by P507 extracting agent 2-ethylhexyl phosphate mono-2-ethylhexyl ester), the temperature is 40 ℃, the oil content is 80ppm, the total treatment capacity is 460L, the oil content is 0.8ppm after resin adsorption, and the adsorption capacity is 48.58 g/L.
The resin is analyzed by ethanol with the temperature of 30 ℃ and the counter flow of 4BV (namely 3L), the ethanol flow is 2BV, the oil desorption rate is 99.3 percent, the recovery rate of ethanol in a rectifying tower is 99 percent, and the recovery rate of oil in the rectifying tower is 99.7 percent.
Example 4
The device comprises the following steps: loading 750mL of DA201-C resin into a resin column
In a glass resin column.
The oily wastewater (containing P507 extractant, synergist and sulfonated kerosene) is introduced into the resin column at the flow rate of 5BV (namely 3.75L/h) by a peristaltic pump. The oily wastewater is raffinate (containing 70g/L of manganese ions) obtained after extracting manganese by a P507 extracting agent 2-ethylhexyl phosphate mono-2-ethylhexyl ester), the temperature is 40 ℃, the oil content is 30ppm, the total treatment capacity is 620L, the oil content is 0.3ppm after resin adsorption, and the adsorption capacity is 24.55g/L, which are measured by an infrared oil tester.
The resin is analyzed by ethanol with the temperature of 30 ℃ and the counter flow of 4BV (namely 3L), the ethanol flow is 2BV, the oil desorption rate is 99.4 percent, the recovery rate of ethanol in a rectifying tower is 99 percent, and the recovery rate of oil in the rectifying tower is 99.7 percent.
Example 5
The device comprises the following steps: loading 750mL of DA201-C resin into a resin column
In a glass resin column.
The oily wastewater (containing P204 extractant, synergist and sulfonated kerosene) is introduced into the resin column at the flow rate of 5BV (namely 3.75L/h) by a peristaltic pump. The oily wastewater is raffinate (containing 0.2g/L of nickel ions) obtained after nickel is extracted by a P204 extracting agent (di (2-ethylhexyl) phosphate and di (2-ethylhexyl) phosphate), the temperature is 40 ℃, the oil content is 120ppm measured by an infrared oil tester, the oil content is 0.8ppm after resin adsorption, the total treatment capacity reaches 330L, and the adsorption capacity is 52.45 g/L.
The resin is analyzed by ethanol with the temperature of 30 ℃ and the counter flow of 4BV (namely 3L), the ethanol flow is 2BV, the oil desorption rate is 99.2 percent, the recovery rate of ethanol in a rectifying tower is 99 percent, and the recovery rate of oil in the rectifying tower is 99.8 percent.
The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any manner. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be construed as the protection scope of the present invention.
Claims (10)
1. A method for treating oily wastewater is characterized by comprising the following steps:
and adsorbing and deoiling the oily wastewater by DA201-C series resin.
2. The treatment method according to claim 1, wherein the oil content of the oily wastewater is 30 to 300 ppm.
3. The treatment method according to claim 1 or 2, wherein the oil content in the oily wastewater comprises sulfonated kerosene, an extracting agent and a co-extracting agent.
4. The treatment method according to claim 1 or 2, wherein the oily wastewater further comprises heavy metal ions, and the heavy metal ions comprise cobalt ions, nickel ions, manganese ions, copper ions and Fe2+And Fe3+One or more of (a).
5. The treatment method according to claim 1, wherein the flow rate of the oily wastewater passing through the DA201-C series resin is 2-20 BV.
6. The treatment method according to claim 1, wherein the temperature of the adsorption degreasing is 10-60 ℃.
7. The treatment method according to claim 1, wherein the adsorption degreasing further comprises performing reverse elution regeneration on the adsorption-saturated degreasing resin by using alcohol substances.
8. The process of claim 7, wherein the alcohol is ethanol.
9. The treatment method according to claim 7 or 8, wherein the volume ratio of the alcohol substance to the adsorption-saturated degreasing resin is 2-6: 1.
10. The treatment method according to claim 7, wherein a regenerated liquid is obtained after the reverse elution and regeneration, the regenerated liquid is rectified and separated to obtain regenerated alcohol substances and oil components, and the regenerated alcohol substances and the oil components are recycled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110631232.7A CN113354025A (en) | 2021-06-07 | 2021-06-07 | Treatment method of oily wastewater |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110631232.7A CN113354025A (en) | 2021-06-07 | 2021-06-07 | Treatment method of oily wastewater |
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| CN113354025A true CN113354025A (en) | 2021-09-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114620859A (en) * | 2022-02-25 | 2022-06-14 | 中南大学 | Method for removing dissolved P507 in saponified P507 wastewater |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1915845A (en) * | 2006-08-18 | 2007-02-21 | 南京大学 | High performance deoiling method through adsorption of resin |
| CN105601020A (en) * | 2016-03-30 | 2016-05-25 | 北京赛科康仑环保科技有限公司 | Treatment technology of raffinate wastewater of nickel, cobalt and manganese |
| CN108410941A (en) * | 2018-04-03 | 2018-08-17 | 金华市艾力生物科技有限公司 | The method that antibacterial peptide is extracted from zymotic fluid |
-
2021
- 2021-06-07 CN CN202110631232.7A patent/CN113354025A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1915845A (en) * | 2006-08-18 | 2007-02-21 | 南京大学 | High performance deoiling method through adsorption of resin |
| CN105601020A (en) * | 2016-03-30 | 2016-05-25 | 北京赛科康仑环保科技有限公司 | Treatment technology of raffinate wastewater of nickel, cobalt and manganese |
| CN108410941A (en) * | 2018-04-03 | 2018-08-17 | 金华市艾力生物科技有限公司 | The method that antibacterial peptide is extracted from zymotic fluid |
Non-Patent Citations (1)
| Title |
|---|
| 黄方言: "《现代实用中药新剂型新技术》", 30 April 2001, 北京：人民卫生出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114620859A (en) * | 2022-02-25 | 2022-06-14 | 中南大学 | Method for removing dissolved P507 in saponified P507 wastewater |
| CN114620859B (en) * | 2022-02-25 | 2023-10-27 | 中南大学 | Method for removing dissolved P507 in saponification P507 wastewater |
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