A water-gas integrated treatment method for phenolic resin acid industrial waste gas

Abstract

The present application relates to the technical field of waste gas treatment, in particular to a water-gas integrated treatment method for phenolic resin acid industrial waste gas. The water-gas integrated treatment method comprises the following steps: S1: spraying and absorbing the phenolic resin acid industrial waste gas by using an alkaline biochemical sludge mixed solution containing aerobic bacteria, and then discharging; S2: adding an acid solution containing a surfactant to the discharged biochemical sludge mixed solution, precipitating, and separating the precipitate after cross-linking reaction to obtain phenolic resin spherical particles. The water-gas integrated treatment method can not only reduce the waste gas treatment cost, but also improve the treatment efficiency, is simple to operate, suitable for industrial production, and can recover the phenolic resin spherical particles, realize resource utilization and high-value utilization, and the prepared phenolic resin spherical particles can be applied to the field of preparing phenolic molding compounds or electrode materials.

Description

Technical Field

[0001] This invention relates to the field of waste gas treatment technology, specifically to an integrated water-gas treatment method for acidic industrial waste gas from phenolic resin. Background Technology

[0002] Phenolic resin is a widely used material. The main raw materials used in its production are phenol, aldehyde, and catalyst. In the production of thermoplastic phenolic resin, acidic substances such as oxalic acid, formic acid, and acetic acid are used as catalysts. Therefore, the production of phenolic resin generates a large amount of waste gas, especially during the reaction, dehydration, and feeding stages, where temperatures are high and gas volatility is high. This waste gas mainly contains phenols, aldehydes, small molecule resins, and organic acids, and requires collection and treatment.

[0003] Existing exhaust gas treatment methods mainly include adsorption, combustion, and spraying. Among these, spraying is an economical and simple method. For example, Chinese utility model patent CN207445937U discloses a phenolic resin waste gas treatment device that combines a first waste gas purification tower and a second waste gas purification tower to target the main pollutants, phenols and aldehydes, in the waste gas. Formaldehyde forms polymerized formaldehyde in an acidic solution and precipitates. Phenol solution is acidic and reacts with alkaline solution to form sodium phenolate, which also precipitates. However, for acidic waste gas generated during the production of thermoplastic phenolic resin, when using solution for spray absorption, the pH of the absorbent gradually decreases due to the influence of organic acids, reducing the absorption effect. Simultaneously, the decrease in pH can cause small molecule resins to precipitate and adhere to the pump, pipes, and spray tower, affecting the spraying effect. To maintain pH stability, alkaline solution needs to be continuously replenished, significantly increasing treatment costs. Furthermore, the use of alkaline solution also increases the salinity of the spray solution, increasing the difficulty of post-treatment. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the technical problem to be solved by the present invention is to provide an integrated water and air treatment method for acidic industrial waste gas of phenolic resin, which can reduce treatment costs and improve treatment efficiency.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: an integrated water and air treatment method for acidic industrial waste gas from phenolic resin, comprising the following steps:

[0006] S1: The acidic industrial waste gas from phenolic resin is absorbed by spraying with an alkaline biochemical sludge mixture containing aerobic bacteria, and then discharged.

[0007] S2: Add an acidic solution containing surfactant to the discharged biochemical sludge mixture, precipitate out, and after cross-linking reaction, separate the precipitate to obtain phenolic resin spherical particles.

[0008] The beneficial effects of this invention are as follows: This invention discloses an integrated water-air treatment method for acidic industrial waste gas from phenolic resin production. This method uses an alkaline biochemical sludge mixture containing aerobic bacteria to spray and absorb the acidic industrial waste gas from phenolic resin production. This allows the mixture to simultaneously perform aerobic biochemical treatment during the spraying and absorption of the waste gas, releasing OH-. - The process involves neutralizing acidic substances in the waste gas to maintain a stable pH level. Next, an acidic solution containing a surfactant is added to the mixture after spray absorption, causing precipitation. Following further cross-linking, the precipitate is separated to obtain spherical phenolic resin particles. This integrated water-gas treatment method not only reduces waste gas treatment costs but also improves treatment efficiency. It is simple to operate, suitable for industrial production, and simultaneously recovers the spherical phenolic resin particles, achieving resource utilization and high-value use. The obtained spherical phenolic resin particles can be used in the preparation of phenolic molding compounds or electrode materials. Attached Figure Description

[0009] Figure 1 The image shown is a SEM image of spherical phenolic resin particles according to a specific embodiment of the present invention. Detailed Implementation

[0010] To explain in detail the technical content, objectives, and effects of the present invention, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0011] The most crucial concept of this invention lies in the fact that, during the absorption of acidic industrial waste gas from phenolic resin by alkaline solution, simultaneous aerobic biochemical treatment is carried out, releasing OH-. - The absorbent is used to neutralize acidic substances in the waste gas, and then phenolic resin spherical particles are prepared from the absorbent liquid, realizing resource utilization and high-value utilization.

[0012] Please refer to Figure 1 As shown, the present invention provides an integrated water-air treatment method for acidic industrial waste gas from phenolic resin, comprising the following steps:

[0013] S1: The acidic industrial waste gas from phenolic resin is absorbed by spraying with an alkaline biochemical sludge mixture containing aerobic bacteria, and then discharged.

[0014] S2: Add an acidic solution containing surfactant to the discharged biochemical sludge mixture, precipitate out, and after cross-linking reaction, separate the precipitate to obtain phenolic resin spherical particles.

[0015] As can be seen from the above description, the beneficial effects of the present invention are as follows: The water-air integrated treatment method for acidic industrial waste gas from phenolic resin of the present invention first uses an alkaline biochemical sludge mixture containing aerobic bacteria to spray and absorb the acidic industrial waste gas from phenolic resin, releasing OH... -(See Formula 1) neutralizes acidic substances in the waste gas, maintains a stable pH value in the system, and simultaneously performs aerobic biochemical treatment during the spray absorption process to reduce the COD content of the absorbent and alleviate the difficulty of subsequent treatment; then, an acidic solution containing surfactant is added to the mixed liquid after spray absorption, so that the solubility of small molecule resin in the solution decreases as the pH value of the system decreases, and precipitates out of the system with the assistance of surfactant to form primary spherical particles. The particles can maintain a relatively stable morphology under the protection of surfactant, and after cross-linking, they are further solidified to form stable phenolic resin microspheres.

[0016]

[0017] During the treatment process, the wastewater after separation and precipitation can be recycled for the preparation of formaldehyde aqueous solution after deep biochemical treatment. The spherical phenolic resin particles obtained from the separation and precipitation are a high-value-added material that can be directly used to fill composite materials and prepare phenolic molding compounds. The spherical structure can play a good structural role, improve the mechanical properties of the molding compound, and reduce shrinkage. The prepared molding compounds can be used in fields such as electronic skeletons and power battery separators. The phenolic resin carbon microspheres prepared by carbonization have a high specific surface area and abundant pore structure, and can be used as electrode materials or catalytic materials, realizing the resource utilization and high-value utilization of waste.

[0018] The integrated water and air treatment method of the present invention can not only reduce the cost of waste gas treatment, but also improve the treatment efficiency. It is easy to operate and suitable for industrial production. At the same time, it can recover spherical phenolic resin particles, realizing resource utilization and high-value utilization.

[0019] Furthermore, the acidic industrial waste gas from phenolic resin production refers to the waste gas generated during the preparation of thermoplastic phenolic resin using organic acids as catalysts.

[0020] Furthermore, the oxygen content of the acidic industrial waste gas from phenolic resin is ≥18%.

[0021] As can be seen from the above description, the oxygen content of acidic industrial waste gas from phenolic resin is ≥18%, which can provide sufficient oxygen for aerobic bacteria and maintain good biochemical effects.

[0022] Furthermore, the acidic industrial waste gas from phenolic resin contains 5–50 mg / m³ 3 Phenolics, 5–100 mg / m² 3 Aldehydes, 10–100 mg / m³ 3 Non-methane total hydrocarbons.

[0023] As described above, phenols and aldehydes have good water solubility, and even better solubility in alkaline solutions, allowing them to be effectively removed. After spraying and simultaneous aerobic biochemical treatment, the remaining COD can be removed through subsequent advanced biochemical treatment.

[0024] Furthermore, the acidic industrial waste gas from phenolic resins also includes organic acids, which are at least one of oxalic acid, formic acid, and acetic acid.

[0025] Preferably, the organic acid is oxalic acid.

[0026] As described above, the OH- produced by aerobic biochemical processes in the mixture of organic acids and spray solution... - Through continuous neutralization, organic acid salts are formed. These salts have small molecular weights and good degradation effects, allowing them to be preferentially degraded by aerobic bacteria and continuously releasing OH-. - This process continues to maintain the pH stability of the system.

[0027] Furthermore, the specific preparation method of alkaline biochemical sludge mixture containing aerobic bacteria is as follows: prepare biochemical sludge mixture using domestic sludge or aerobic sludge from phenolic resin wastewater treatment tank, and then adjust the pH to 8-12 with alkaline solution.

[0028] Preferably, aerobic sludge from a phenolic resin wastewater treatment tank is used to prepare a biochemical sludge mixture, and then the pH is adjusted to 10-12 with an alkaline solution.

[0029] As described above, adjusting the pH to 8-12 improves absorption. During the later stages of spraying, aerobic bacteria in the system continuously degrade organic acid salts and release OH-. - It neutralizes the organic acids in the exhaust gas, which can maintain a stable pH level.

[0030] Furthermore, the solid content of the alkaline biochemical sludge mixture is 2000–15000 mg / L.

[0031] Preferably, the solid content of the alkaline biological sludge mixture is 4000–8000 mg / L.

[0032] As described above, the solid content of alkaline biological sludge mixture should be 2000–15000 mg / L to maintain good biochemical effects; too high a content will result in poor purification effect, while too low a content will result in low purification efficiency.

[0033] Further, S2 specifically involves: adding an acidic solution containing a surfactant to the discharged biochemical sludge mixture, stirring continuously until the pH reaches 6-8, precipitating out a precipitate, and obtaining a mixture containing the precipitate; heating the mixture containing the precipitate to 80-160℃, keeping it at that temperature for 1-24 hours, filtering, and drying to obtain phenolic resin spherical particles.

[0034] As described above, the mixed liquid discharged after spray absorption contains a large amount of recyclable substances, especially some small-molecule phenolic resins. These substances have good solubility in alkaline solutions, but their solubility decreases as the pH value decreases, causing them to precipitate out of the system in the form of precipitates. Since the mixed liquid is a dilute solution system, the precipitation in the form of spherical particles consumes the least energy and forms the most stable precipitate. After heating, the small-molecule phenolic resin inside the spherical particles coated with surfactants can undergo further condensation reactions with phenols, aldehydes, and even smaller molecular weight resins in the external mixed liquid, eventually cross-linking and curing to form stable phenolic resin microspheres.

[0035] Introducing surfactants during the precipitation process can promote the precipitation of precipitates, especially small molecule resins. At the same time, surfactants can coat the outer layer of the precipitate, maintaining its morphology and structural stability, especially maintaining its morphological stability during the later temperature-induced cross-linking and curing process.

[0036] Furthermore, the emission method is either a one-time emission or a partial emission.

[0037] Preferably, the emission method is partial emission.

[0038] As described above, for continuous exhaust gas treatment, partial emissions are preferred, with emissions based on the concentration of pollutants in the absorbent liquid as a reference indicator. This maintains the pollutant concentration within a certain range, ensuring optimal treatment performance. Generally, higher pollutant concentrations in the exhaust gas lead to more frequent emissions, which improves treatment efficiency but also increases costs. In this invention, the spray mixture can self-adjust its pH to maintain good absorption, thus significantly reducing emission frequency and lowering treatment costs.

[0039] Furthermore, when partial discharge is selected, an alkaline aqueous solution is added to the undischarged biochemical sludge mixture after discharge.

[0040] As can be seen from the above description, maintaining the concentration of pollutants within a certain range is crucial for achieving optimal treatment results.

[0041] Furthermore, the surfactant is an anionic surfactant or a cationic surfactant.

[0042] Furthermore, the surfactant is any one of polyoxyethylene polyoxypropylene ether block copolymer (F127), polyvinyl alcohol, hexadecyltrimethylammonium bromide (CTAB), or hexadecyltrimethylammonium chloride (CTAC).

[0043] Furthermore, an acidic solution containing surfactants is added to the discharged biochemical sludge mixture, followed by the addition of a solidifying agent, causing precipitation.

[0044] Furthermore, the curing agent is formaldehyde or hexamethylenetetramine.

[0045] As can be seen from the above description, adding a curing agent can increase the degree of crosslinking.

[0046] Please refer to Figure 1 As shown, Embodiment 1 of the present invention is: a water-air integrated treatment method for acidic industrial waste gas from phenolic resin, comprising the following steps:

[0047] S1: A biochemical sludge mixture with a solid content of 6210 mg / L was prepared using aerobic sludge from a phenolic resin wastewater treatment tank. The total phosphorus was adjusted to 6 mg / L and the ammonia nitrogen to 25 mg / L. The pH was then adjusted to 12 with alkaline solution to obtain an alkaline biochemical sludge mixture containing aerobic bacteria.

[0048] S2: The alkaline biochemical sludge mixture containing aerobic bacteria is put into the spray tower. The alkaline biochemical sludge mixture is sprayed through pipes and nozzles using a pump. The acidic industrial waste gas of phenolic resin is blown into the spray tower by a blower for spray absorption.

[0049] S3: Discharge part of the biochemical sludge mixture after spray absorption to the next stage of treatment, and replenish the tower with alkaline aqueous solution.

[0050] S4: Add an acidic solution containing hexadecyltrimethylammonium bromide (CTAB) to the discharged biochemical sludge mixture, and stir continuously until the pH reaches 6.5, precipitate is formed, and a mixture containing precipitate is obtained; heat the mixture containing precipitate to 100℃, keep it at that temperature for 12 hours, filter and dry to obtain phenolic resin spherical particles.

[0051] The acidic industrial waste gas from phenolic resin production is generated during the preparation of thermoplastic phenolic resin using oxalic acid as a catalyst. It contains ≥18% oxygen, and the imported industrial waste gas contains 22 mg / m³ of oxygen. 3 Phenol, 11 mg / m 3 Formaldehyde, 45mg / m³ 3 Non-methane total hydrocarbons, average inlet flow rate 18588 m³ 3 / h; Exported industrial waste gas includes 2.9mg / m³ 3 Phenol, 0.6 mg / m³ 3 Formaldehyde, 2.7 mg / m³ 3 Non-methane total hydrocarbons.

[0052] The spherical phenolic resin particles obtained in Example 1 were used to prepare phenolic molding compound. The specific preparation method was as follows: by weight, 15 parts of spherical phenolic resin particles, 35 parts of phenolic resin, 15 parts of wood fiber, 5 parts of calcium carbonate, 5 parts of talc, 5 parts of magnesium oxide, 15 parts of hexamethylenetetramine, 2 parts of EBS, 2 parts of calcium stearate, and 1 part of oil black were mixed evenly. After melt blending, cooling, and pulverizing, phenolic molding compound was obtained.

[0053] The phenolic molding compound was tested and found to have a tensile strength of 59 MPa and an impact strength of 7.9 kJ / m. 2 The load deformation temperature is 179℃, and the electrical strength is 18kV / mm.

[0054] Embodiment 2 of the present invention is as follows:

[0055] The only difference between Example 2 and Example 1 is that the surfactant is polyoxyethylene polyoxypropylene ether block copolymer (F127); the imported industrial waste gas contains 35 mg / m³. 3 Phenol, 28 mg / m 3 Formaldehyde, 86 mg / m³ 3 Non-methane total hydrocarbons, average inlet flow rate 18655 m³ 3 / h; Exported industrial waste gas includes 3.8mg / m³ 3 Phenol, 1.9 mg / m³ 3 Formaldehyde, 6.6 mg / m³ 3 Non-methane total hydrocarbons.

[0056] Embodiment 3 of the present invention is as follows:

[0057] The only difference between Example 3 and Example 1 is that:

[0058] S1: A biochemical sludge mixture with a solid content of 6650 mg / L was prepared using aerobic sludge from a phenolic resin wastewater treatment tank. The total phosphorus was adjusted to 6 mg / L and the ammonia nitrogen to 25 mg / L. The pH was then adjusted to 11 with alkaline solution to prepare an alkaline biochemical sludge mixture containing aerobic bacteria.

[0059] The surfactant is polyoxyethylene polyoxypropylene ether block copolymer (F127); the imported industrial waste gas contains 26 mg / m³ 3 Phenol, 18 mg / m 3 Formaldehyde, 53 mg / m³ 3 Non-methane total hydrocarbons, average inlet flow rate 18506 m³ 3 / h; Exported industrial waste gas includes 2.6mg / m³ 3 Phenol, 2.0 mg / m³ 3 Formaldehyde, 5.4 mg / m³ 3 Non-methane total hydrocarbons.

[0060] Embodiment four of the present invention is as follows:

[0061] The only difference between Example 4 and Example 1 is that:

[0062] S1: A biochemical sludge mixture with a solid content of 6650 mg / L was prepared using aerobic sludge from a phenolic resin wastewater treatment tank. The total phosphorus was adjusted to 6 mg / L and the ammonia nitrogen to 25 mg / L. The pH was then adjusted to 11 with alkaline solution to prepare an alkaline biochemical sludge mixture containing aerobic bacteria.

[0063] Imported industrial waste gas includes 14 mg / m³ 3 Phenol, 8 mg / m 3 Formaldehyde, 28mg / m³ 3 Non-methane total hydrocarbons, average inlet flow rate 19122 m³ 3 / h; Exported industrial waste gas includes 4.1mg / m³ 3 Phenol, 0.7 mg / m³ 3 Formaldehyde, 8.2 mg / m³ 3 Non-methane total hydrocarbons.

[0064] Embodiment 5 of the present invention is: a water-air integrated treatment method for acidic industrial waste gas from phenolic resin, comprising the following steps:

[0065] S1: A biochemical sludge mixed liquor with a solid content of 5200 mg / L was prepared using domestic sewage sludge. The total phosphorus was adjusted to 6 mg / L and the ammonia nitrogen to 25 mg / L. The pH was then adjusted to 8 with alkaline solution to prepare an alkaline biochemical sludge mixed liquor containing aerobic bacteria.

[0066] S2: The alkaline biochemical sludge mixture containing aerobic bacteria is put into the spray tower. The biochemical sludge mixture is sprayed through pipes and nozzles using a pump. The acidic industrial waste gas of phenolic resin is blown into the spray tower by a blower for spray absorption.

[0067] S3: The biochemical sludge mixture after spray absorption is discharged into the next stage of treatment in one go.

[0068] S4: Add an acidic solution of hexadecyltrimethylammonium chloride (CTAC) to the discharged biochemical sludge mixture, then add formaldehyde and stir continuously until the pH reaches 6.2, precipitate is formed, and a mixture containing precipitate is obtained; heat the mixture containing precipitate to 80℃, keep it at that temperature for 24 hours, filter and dry to obtain phenolic resin spherical particles.

[0069] The acidic industrial waste gas from phenolic resin production is generated during the preparation of thermoplastic phenolic resin using oxalic acid as a catalyst. It contains ≥18% oxygen, and the imported industrial waste gas contains 8 mg / m³ of oxygen. 3 Phenol, 18 mg / m 3 Formaldehyde, 36mg / m³ 3Non-methane total hydrocarbons, average inlet flow rate 18325 m³ 3 / h; Exported industrial waste gas includes 3.3mg / m³ 3 Phenol, 1.2 mg / m³ 3 Formaldehyde, 2.0 mg / m³ 3 Non-methane total hydrocarbons.

[0070] Embodiment six of the present invention is: a water-air integrated treatment method for acidic industrial waste gas from phenolic resin, comprising the following steps:

[0071] S1: A biochemical sludge mixed liquor with a solid content of 12410 mg / L was prepared using domestic sewage sludge. The total phosphorus was adjusted to 6 mg / L and the ammonia nitrogen to 25 mg / L. The pH was then adjusted to 8 with alkaline solution to obtain an alkaline biochemical sludge mixed liquor containing aerobic bacteria.

[0072] S2: The alkaline biochemical sludge mixture containing aerobic bacteria is put into the spray tower. The biochemical sludge mixture is sprayed through pipes and nozzles using a pump. The acidic industrial waste gas of phenolic resin is blown into the spray tower by a blower for spray absorption.

[0073] S3: The biochemical sludge mixture after spray absorption is discharged into the next stage of treatment in one go.

[0074] S4: After adding an acidic solution of polyvinyl alcohol to the discharged biochemical sludge mixture, add hexamethylenetetramine and stir continuously until the pH reaches 6.7, precipitate will be formed, and a mixture containing precipitate will be obtained; heat the mixture containing precipitate to 160℃, keep it at that temperature for 1 hour, filter and dry to obtain phenolic resin spherical particles.

[0075] The acidic industrial waste gas from phenolic resin production is generated during the preparation of thermoplastic phenolic resin using organic acids as catalysts. It contains ≥18% oxygen, and the imported industrial waste gas contains 16 mg / m³ of oxygen. 3 Phenol, 22 mg / m 3 Formaldehyde, 36mg / m³ 3 Non-methane total hydrocarbons, average inlet flow rate 18581 m³ 3 / h; Exported industrial waste gas includes 0.5mg / m³ 3 Phenol, 1.0 mg / m³ 3 Formaldehyde, 1.6 mg / m³ 3 Non-methane total hydrocarbons.

[0076] In summary, the integrated water-air treatment method provided by this invention uses an alkaline biochemical sludge mixture containing aerobic bacteria as the absorbent to spray and absorb phenolic resin production waste gas. The phenols, aldehydes, small-molecule resins, and organic acids in the waste gas all have good water solubility and can be effectively absorbed by the spray liquid. The organic acids are absorbed by the spray liquid to form organic acid salts, such as sodium oxalate, sodium formate, and sodium acetate. Simultaneously, the aerobic bacteria in the spray liquid can perform aerobic biochemical treatment during the spray absorption process, reducing the COD content of the absorbent and alleviating the difficulty of subsequent treatment. Furthermore, and more importantly, the small-molecule substances in the absorbent, especially the salts of organic acids, have better degradation characteristics and can be preferentially degraded to form carbon dioxide and water, while continuously releasing OH-. - (See Equation 1) to further neutralize the organic acids in the waste gas and repeat this process to maintain the stability of the system pH and maintain the absorption effect of the absorbent.

[0077] The absorbent solution after spray absorption contains a large amount of phenols, aldehydes, and small molecule resins, making direct deep biochemical treatment difficult and costly. Furthermore, the effective components in the absorbent solution cannot be recovered, resulting in resource waste. To address these issues, this invention adds an acidic solution containing a surfactant to an alkaline absorbent solution. As the pH of the system decreases, the solubility of the small molecule resins in the solution decreases, and with the assistance of the surfactant, they precipitate from the system to form primary spherical particles. These particles maintain relative morphological stability under the protection of the surfactant. After heat treatment, the spherical particles further cross-link and solidify to form stable phenolic resin microspheres.

[0078] The integrated water and air treatment method of the present invention can not only reduce the cost of waste gas treatment, but also improve the treatment efficiency. It is easy to operate and suitable for industrial production. At the same time, it can recover spherical phenolic resin particles, realizing resource utilization and high-value utilization.

[0079] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent modifications made based on the content of the present invention specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A method for integrated water and air treatment of acidic industrial waste gas from phenolic resin, characterized in that, Includes the following steps: S1: The acidic industrial waste gas from phenolic resin is absorbed by spraying with an alkaline biochemical sludge mixture containing aerobic bacteria, and then discharged. S2: After adding an acidic solution containing a surfactant to the discharged biochemical sludge mixture, the mixture is stirred continuously until the pH is 6-8, and a precipitate is formed to obtain a mixture containing the precipitate; the mixture containing the precipitate is heated to 80-160℃ and kept at that temperature for 1-24 hours, and then filtered and dried to obtain phenolic resin spherical particles. The surfactant is an anionic surfactant or a cationic surfactant.

2. The integrated water-gas treatment method for acidic industrial waste gas from phenolic resin according to claim 1, characterized in that, The acidic industrial waste gas from phenolic resin production is the waste gas generated during the preparation of thermoplastic phenolic resin using organic acids as catalysts.

3. The integrated water-gas treatment method for acidic industrial waste gas from phenolic resin according to claim 1, characterized in that, The oxygen content of the acidic industrial waste gas from the phenolic resin is ≥18%.

4. The integrated water-gas treatment method for acidic industrial waste gas from phenolic resin according to claim 1, characterized in that, The acidic industrial waste gas from phenolic resin contains 5~50 mg / m³ 3 Phenols, 5~100mg / m 3 Aldehydes, 10~100mg / m³ 3 Non-methane total hydrocarbons.

5. The integrated water-gas treatment method for acidic industrial waste gas from phenolic resin according to claim 1, characterized in that, The specific preparation method of the alkaline biochemical sludge mixture containing aerobic bacteria is as follows: prepare the biochemical sludge mixture using domestic sludge or aerobic sludge from a phenolic resin wastewater treatment tank, and then adjust the pH to 8-12 with alkaline solution.

6. The integrated water-gas treatment method for acidic industrial waste gas from phenolic resin according to claim 5, characterized in that, The solid content of the biochemical sludge mixture is 2000~15000 mg / L.

7. The integrated water-gas treatment method for acidic industrial waste gas from phenolic resin according to claim 1, characterized in that, The emission method in S1 is either a one-time emission or a partial emission.

8. The integrated water-gas treatment method for acidic industrial waste gas from phenolic resin according to claim 1, characterized in that, An acidic solution containing surfactants is added to the discharged biochemical sludge mixture, followed by the addition of a solidifying agent, causing precipitation.

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