CN115259278A - Preparation method of special treating agent for high-oil-content sewage - Google Patents
Preparation method of special treating agent for high-oil-content sewage Download PDFInfo
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- CN115259278A CN115259278A CN202210912252.6A CN202210912252A CN115259278A CN 115259278 A CN115259278 A CN 115259278A CN 202210912252 A CN202210912252 A CN 202210912252A CN 115259278 A CN115259278 A CN 115259278A
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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
- C02F1/52—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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Abstract
The invention discloses a preparation method of a special treating agent for high-oil-content sewage, which consists of 2-5% of activated silicic acid, 10-15% of polyaluminum silicate sulfate, 5-8% of ferrous sulfate, 2-3% of 98% of sulfuric acid and 69-81% of water, and comprises the following specific steps: s1, dissolving 2-5% of activated silicic acid in 69-81% of water, feeding the solution into a reaction kettle, and stirring for 30min at the reaction temperature of 50-55 ℃; s2, mixing 10-15% of polysilicate aluminum sulfate and 5-8% of ferrous sulfate into a reaction kettle, and stirring for 35min, wherein the reaction temperature is 50-55 ℃; and S3, slowly injecting 2-3% high-concentration sulfuric acid into the reaction kettle, stirring for 40min, and standing to normal temperature. The invention can demulsify the high oil-containing sewage, greatly reduce COD, BOD and SS in the sewage while treating oil pollutants in the sewage, and improve the biodegradability of the sewage.
Description
Technical Field
The invention relates to the technical field of oily sewage treatment, in particular to a preparation method of a special treating agent for high-oil-content sewage.
Background
With the rapid development of industrialization in China, the demand of metal surface processing is particularly high, and cutting fluid commonly used by metal surface processing enterprises contains emulsified oil, the particle size of the emulsified oil is extremely small, water-oil emulsion is formed in water, a layer of limiting membrane is formed on the surface of the emulsified oil and is provided with ignition, and an electric double layer is formed on the periphery of oil droplets, so that the mutual repulsion of the oil droplets is extremely difficult to approach. If the waste water is not directly discharged, the water resource environment is greatly influenced. In the sewage treatment process, if the oil stain is not effectively treated, equipment is easily polluted and blocked, energy consumption is high, a subsequent biochemical process cannot normally run, and the like, so that the water environment is influenced because the sewage cannot be effectively treated.
The technical scheme of the existing oily sewage treatment is as follows: after the pH value is adjusted, coagulant and flocculant are added, and then floating oil is removed through air flotation, but the method has two problems:
1. the floating oil is not completely removed, and the subsequent process treatment is influenced;
2. the treated sludge has high oil content, and is often polluted and blocked when the sludge is dewatered, so that the system is paralyzed.
Disclosure of Invention
The invention provides a preparation method of a special treating agent for high-oil-content sewage, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention adopts the following technical scheme:
a preparation method of a special treating agent for high-oil-content sewage, which consists of 2-5% of activated silicic acid, 10-15% of polysilicate aluminum sulfate, 5-8% of ferrous sulfate, 2-3% of 98% of sulfuric acid and 69-81% of water, comprises the following specific steps:
s1, dissolving 2-5% of activated silicic acid in 69-81% of water, feeding the solution into a reaction kettle, and stirring for 30min at the reaction temperature of 50-55 ℃;
s2, mixing 10-15% of polysilicate aluminum sulfate and 5-8% of ferrous sulfate into a reaction kettle, and stirring for 35min, wherein the reaction temperature is 50-55 ℃;
and S3, slowly injecting 2-3% high-concentration sulfuric acid into the reaction kettle, stirring for 40min, and standing to normal temperature.
As a further improvement scheme of the technical scheme: in the S1, water is deionized water.
As a further improvement scheme of the technical scheme: in the S3, the high-concentration sulfuric acid is a 98% sulfuric acid solution.
As a further improvement scheme of the technical scheme: the preparation method comprises the following specific steps: s1, dissolving 2% of activated silicic acid in 81% of water, feeding the solution into a reaction kettle, and stirring for 30min, wherein the reaction temperature is 50-55 ℃;
s2, mixing 10% of poly-aluminum silicate sulfate and 5% of ferrous sulfate into a reaction kettle, and stirring for 35min at the reaction temperature of 50-55 ℃;
and S3, slowly injecting 2% high-concentration sulfuric acid into the reaction kettle, stirring for 40min, and standing to normal temperature.
As a further improvement scheme of the technical scheme: the preparation method comprises the following specific steps:
s1, dissolving 3% of activated silicic acid in 75% of water, feeding the solution into a reaction kettle, and stirring for 30min at the reaction temperature of 50-55 ℃;
s2, mixing 13% of polyaluminum silicate sulfate and 7% of ferrous sulfate into a reaction kettle, and stirring for 35min at the reaction temperature of 50-55 ℃;
and S3, slowly injecting 2% high-concentration sulfuric acid into the reaction kettle, stirring for 40min, and standing to normal temperature.
As a further improvement scheme of the technical scheme: the preparation method comprises the following specific steps:
s1, dissolving 5% of activated silicic acid in 69% of water, feeding the solution into a reaction kettle, and stirring for 30min at the reaction temperature of 50-55 ℃;
s2, mixing 15% of polysilicate aluminum sulfate and 8% of ferrous sulfate into a reaction kettle, and stirring for 35min, wherein the reaction temperature is 50-55 ℃;
and S3, slowly injecting 3% high-concentration sulfuric acid into the reaction kettle, stirring for 40min, and standing to normal temperature.
As a further improvement scheme of the technical scheme: the emulsion breaking agent is used for demulsifying the high oil-containing sewage.
As a further improvement scheme of the technical scheme: is used for greatly reducing COD, BOD, SS and petroleum in the high oil-containing sewage.
Compared with the prior art, the invention has the beneficial effects that:
1. the high oil-containing sewage can be demulsified, the COD, BOD and SS in the sewage can be greatly reduced while the oil pollutants in the sewage are treated, and the biodegradability of the sewage is improved;
2. the demulsified sludge can be rapidly precipitated and can smoothly pass through sludge dewatering equipment.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings. The detailed description of the present invention is given in detail by the following examples and the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a schematic structural diagram of a method for preparing a special treating agent for high-oil content sewage according to the present invention.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention. The invention is more particularly described in the following paragraphs with reference to the accompanying drawings by way of example. Advantages and features of the present invention will become apparent from the following description and from the claims. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for purposes of illustration only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, in the embodiment of the present invention, a preparation method of a special high oil content sewage treatment agent is provided, where the special high oil content sewage treatment agent is composed of 2% to 5% of activated silicic acid, 10% to 15% of polyaluminum silicate sulfate, 5% to 8% of ferrous sulfate, 2% to 3% of 98% of sulfuric acid, and 69% to 81% of water, and the preparation method specifically includes:
s1, dissolving 2-5% of activated silicic acid in 69-81% of water, feeding the solution into a reaction kettle, and stirring for 30min at the reaction temperature of 50-55 ℃;
s2, mixing 10-15% of polysilicate aluminum sulfate and 5-8% of ferrous sulfate into a reaction kettle, and stirring for 35min, wherein the reaction temperature is 50-55 ℃;
s3, slowly injecting 2-3% high-concentration sulfuric acid into the reaction kettle, stirring for 40min, and standing to normal temperature.
Specifically, in S1, water is deionized water.
Specifically, in S3, the high-concentration sulfuric acid is a 98% sulfuric acid solution.
The special treating agent for high-oil content sewage can be used for demulsification of high-oil content sewage and can also be used for greatly reducing COD, BOD, SS and petroleum in the high-oil content sewage.
Example 1
The preparation method comprises the following specific steps: s1, dissolving 2% of activated silicic acid in 81% of water, feeding the solution into a reaction kettle, and stirring for 30min at the reaction temperature of 50-55 ℃;
s2, mixing 10% of poly-aluminum silicate sulfate and 5% of ferrous sulfate into a reaction kettle, and stirring for 35min at the reaction temperature of 50-55 ℃;
and S3, slowly injecting 2% high-concentration sulfuric acid into the reaction kettle, stirring for 40min, and standing to normal temperature.
Example 2
The preparation method comprises the following specific steps:
s1, dissolving 3% of activated silicic acid in 75% of water, feeding the solution into a reaction kettle, and stirring for 30min at the reaction temperature of 50-55 ℃;
s2, mixing 13% of polyaluminum silicate sulfate and 7% of ferrous sulfate into a reaction kettle, and stirring for 35min at the reaction temperature of 50-55 ℃;
and S3, slowly injecting 2% high-concentration sulfuric acid into the reaction kettle, stirring for 40min, and standing to normal temperature.
Example 3
The preparation method comprises the following specific steps:
s1, dissolving 5% of activated silicic acid in 69% of water, feeding the solution into a reaction kettle, and stirring for 30min at the reaction temperature of 50-55 ℃;
s2, mixing 15% of polysilicate aluminum sulfate and 8% of ferrous sulfate into a reaction kettle, and stirring for 35min, wherein the reaction temperature is 50-55 ℃;
and S3, slowly injecting 3% high-concentration sulfuric acid into the reaction kettle, stirring for 40min, and standing to normal temperature.
The invention has the following effects:
the oily wastewater treating agent can greatly reduce COD, BOD, SS and petroleum in the oily wastewater under the combined action of the raw materials, and has the advantages of good treatment effect, stable effect, good precipitation effect, good effluent quality and low treatment cost; the invention has the advantages of wide raw material sources, low raw material cost, no toxicity, no influence on operators, easy decomposition of the treated materials, no secondary pollution and the like; the preparation method is simple, easy to operate and suitable for industrial production.
The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any manner; the present invention may be readily implemented by those of ordinary skill in the art as illustrated in the accompanying drawings and described above; however, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the scope of the invention; meanwhile, any changes, modifications, and evolutions of the equivalent changes of the above embodiments according to the actual techniques of the present invention are still within the protection scope of the technical solution of the present invention.
Claims (8)
1. The preparation method of the special treating agent for the high-oil-content sewage is characterized in that the special treating agent for the high-oil-content sewage consists of 2-5% of activated silicic acid, 10-15% of polyaluminum silicate sulfate, 5-8% of ferrous sulfate, 2-3% of 98% of sulfuric acid and 69-81% of water, and the preparation method comprises the following specific steps:
s1, dissolving 2-5% of activated silicic acid in 69-81% of water, feeding the solution into a reaction kettle, and stirring for 30min at the reaction temperature of 50-55 ℃;
s2, mixing 10-15% of polysilicate aluminum sulfate and 5-8% of ferrous sulfate into a reaction kettle, and stirring for 35min, wherein the reaction temperature is 50-55 ℃;
and S3, slowly injecting 2-3% high-concentration sulfuric acid into the reaction kettle, stirring for 40min, and standing to normal temperature.
2. The method for preparing the special treating agent for the high oil content sewage according to claim 1, wherein in the step S1, the water is deionized water.
3. The method for preparing the special treating agent for the high-oil content sewage according to claim 1, wherein the high-concentration sulfuric acid in the S3 is a 98% sulfuric acid solution.
4. The preparation method of the special treating agent for high-oil-content sewage according to claim 1, characterized by comprising the following steps: s1, dissolving 2% of activated silicic acid in 81% of water, feeding the solution into a reaction kettle, and stirring for 30min, wherein the reaction temperature is 50-55 ℃;
s2, mixing 10% of polyaluminum silicate sulfate and 5% of ferrous sulfate into a reaction kettle, and stirring for 35min at the reaction temperature of 50-55 ℃;
and S3, slowly injecting 2% high-concentration sulfuric acid into the reaction kettle, stirring for 40min, and standing to normal temperature.
5. The preparation method of the special treating agent for high-oil-content sewage according to claim 1, characterized by comprising the following steps:
s1, dissolving 3% of activated silicic acid in 75% of water, feeding the solution into a reaction kettle, and stirring for 30min at the reaction temperature of 50-55 ℃;
s2, mixing 13% of polyaluminum silicate sulfate and 7% of ferrous sulfate into a reaction kettle, and stirring for 35min at the reaction temperature of 50-55 ℃;
and S3, slowly injecting 2% high-concentration sulfuric acid into the reaction kettle, stirring for 40min, and standing to normal temperature.
6. The preparation method of the special treating agent for high-oil-content sewage according to claim 1, characterized by comprising the following steps:
s1, dissolving 5% of activated silicic acid in 69% of water, feeding the solution into a reaction kettle, and stirring for 30min at the reaction temperature of 50-55 ℃;
s2, mixing 15% of polysilicate aluminum sulfate and 8% of ferrous sulfate into a reaction kettle, and stirring for 35min, wherein the reaction temperature is 50-55 ℃;
s3, slowly injecting 3% high-concentration sulfuric acid into the reaction kettle, stirring for 40min, and standing to normal temperature.
7. The preparation method of the special treating agent for the high oil content sewage according to claim 1, wherein the special treating agent is used for demulsification of the high oil content sewage.
8. The preparation method of the special treating agent for the sewage with high oil content according to claim 1, which is used for greatly reducing COD, BOD, SS and petroleum in the sewage with high oil content.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210912252.6A CN115259278A (en) | 2022-07-30 | 2022-07-30 | Preparation method of special treating agent for high-oil-content sewage |
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| CN202210912252.6A CN115259278A (en) | 2022-07-30 | 2022-07-30 | Preparation method of special treating agent for high-oil-content sewage |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105000640A (en) * | 2015-06-18 | 2015-10-28 | 中环辽宁工程技术股份有限公司 | Experimental method for preparation of poly-iron-based flocculating agent for coking wastewater advanced treatment |
| CN109095572A (en) * | 2017-06-21 | 2018-12-28 | 中国石油化工股份有限公司 | Polysilicate aluminum ferric sulfate flocculant, preparation method and application |
| CN109250795A (en) * | 2018-09-21 | 2019-01-22 | 六盘水师范学院 | The method that type micro-wave radiation method for the treatment of different things alike quickly prepares polysilicate aluminum ferric sulfate |
| CN114772750A (en) * | 2022-05-13 | 2022-07-22 | 彭继梅 | Efficient sewage treatment agent for printing and dyeing and preparation method thereof |
-
2022
- 2022-07-30 CN CN202210912252.6A patent/CN115259278A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105000640A (en) * | 2015-06-18 | 2015-10-28 | 中环辽宁工程技术股份有限公司 | Experimental method for preparation of poly-iron-based flocculating agent for coking wastewater advanced treatment |
| CN109095572A (en) * | 2017-06-21 | 2018-12-28 | 中国石油化工股份有限公司 | Polysilicate aluminum ferric sulfate flocculant, preparation method and application |
| CN109250795A (en) * | 2018-09-21 | 2019-01-22 | 六盘水师范学院 | The method that type micro-wave radiation method for the treatment of different things alike quickly prepares polysilicate aluminum ferric sulfate |
| CN114772750A (en) * | 2022-05-13 | 2022-07-22 | 彭继梅 | Efficient sewage treatment agent for printing and dyeing and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 汤鸿霄: "《无机高分子絮凝理论与絮凝剂》", 中国建筑工业出版社, pages: 230 * |
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