A method for treating wastewater containing amantadine hydrochloride based on the Fenton method

Abstract

The present invention relates to a method for treating wastewater containing amantadine hydrochloride based on the Fenton method, belonging to the technical field of water treatment. The method for treating wastewater containing amantadine hydrochloride based on the Fenton method comprises the following steps: obtaining a Fenton-like reagent; adding the Fenton-like reagent to the wastewater containing amantadine hydrochloride for oxidative degradation to obtain the treated wastewater; wherein, the Fenton-like reagent is composed of an iron-manganese bimetallic ion complex and hydrogen peroxide; the iron-manganese bimetallic ion complex is prepared by hydrothermal treatment using a divalent iron salt, a divalent manganese salt, a fluorine-containing imidazolium salt ionic liquid compound and a carrier material. By using a specific Fenton-like reagent to oxidatively degrade the wastewater containing amantadine hydrochloride, the present invention significantly improves the oxidative degradation efficiency and oxidative degradation ability of the amantadine wastewater, providing a new means for the treatment of amantadine wastewater.

Description

Technical Field

[0001] The present invention relates to the technical field of water treatment, and in particular to a method for treating wastewater containing amantadine hydrochloride based on the Fenton method. Background Art

[0002] Amantadine is a drug for treating neurological diseases and can effectively prevent and treat various influenza A virus infections clinically. Also known as tricyclodecylamine, it is a white crystalline powder, odorless, slightly soluble in water, stable to light and air, and its hydrochloride form is commonly used clinically. Wastewater containing amantadine has characteristics such as high COD value and being difficult to biodegrade. If directly discharged without effective treatment, it will cause great harm to water bodies. However, the research on the treatment of amantadine wastewater at home and abroad is still in its infancy, and there is an urgent need to develop a method for efficiently treating wastewater containing amantadine hydrochloride.

[0003] Currently, there are two treatment processes for amantadine wastewater: (1) Crystallization method; by adding chemical agents to reduce the solubility of amantadine in water and making it crystallize out. This process can not only reduce the concentration of amantadine in the wastewater but also recycle the crystallization product to realize the reuse of resources. (2) Fenton method; through the reaction of hydroxyl radicals generated during the reaction with amantadine to break the cyclic carbon chain of amantadine and completely oxidize amantadine into carbon dioxide and water. However, the reported oxidation efficiency of Fenton reagents for treating amantadine wastewater is relatively low. Therefore, the treatment technology for amantadine wastewater still needs further exploration and practice. Summary of the Invention

[0004] To solve the above problems, the present invention provides a method for treating wastewater containing amantadine hydrochloride based on the Fenton method.

[0005] The present invention provides a method for treating wastewater containing amantadine hydrochloride based on the Fenton method, and the method for treating wastewater containing amantadine hydrochloride based on the Fenton method includes the following steps:

[0006] Obtain a Fenton-like reagent;

[0007] Add the Fenton-like reagent to the wastewater containing amantadine hydrochloride for oxidative degradation to obtain the treated wastewater;

[0008] Among them, the Fenton-like reagent is composed of an iron-manganese bimetallic ion complex and hydrogen peroxide; the iron-manganese bimetallic ion complex is prepared by hydrothermal treatment using a divalent iron salt, a divalent manganese salt, a fluorine-containing imidazolium salt ionic liquid compound, and a carrier material.

[0009] Furthermore, the preparation method of the iron-manganese bimetallic ion complex includes the following steps:

[0010] Add a ferrous salt, a manganous salt, and a fluorine-containing imidazolium salt ionic liquid compound to water and stir to mix them to obtain a mixture;

[0011] Add a carrier material to the mixture and stir to mix them, then transfer the mixture to a closed reaction kettle for hydrothermal treatment and drying to obtain the iron-manganese bimetallic ion complex.

[0012] Further, the weight ratio of the ferrous salt, the manganous salt, the fluorine-containing imidazolium salt ionic liquid compound, and the carrier material is (3-5):(1-2):(0.1-0.5):(5-8); the added weight of water is 10-15 times the total weight of the ferrous salt, the manganous salt, the fluorine-containing imidazolium salt ionic liquid compound, and the carrier material.

[0013] Further, the carrier material is composed of diatomite powder and hydrotalcite powder with a weight ratio of (15-20):(1-3).

[0014] Further, the fluorine-containing imidazolium salt ionic liquid compound includes at least one of 1-butyl-3-methylimidazolium trifluoromethanesulfonate and 1-butyl-3-methylimidazolium tetrafluoroborate.

[0015] Further, the ferrous salt includes at least one of ferrous sulfate and ferrous chloride; the manganous salt includes at least one of manganese sulfate, manganese acetate, and manganese chloride.

[0016] Further, the working parameters of the hydrothermal treatment include: the temperature is 180-220 °C, and the time is 24-48 hours.

[0017] Further, the steps of adding the Fenton-like reagent to the wastewater containing amantadine hydrochloride for oxidative degradation to obtain the treated wastewater include the following process:

[0018] Add the iron-manganese bimetallic ion complex to the wastewater containing amantadine hydrochloride for dissolution, and then adjust the pH of the system to 3-4 to obtain a first wastewater system;

[0019] Add hydrogen peroxide with a weight percentage of 30%-40% to the first wastewater system for oxidative degradation, and then adjust the pH to 11-12 to obtain the treated wastewater.

[0020] Further, the molar concentration of the iron-manganese bimetallic ion complex in the first wastewater system is 0.005-0.02 mol / L, and the time of the oxidative degradation is ≥5 minutes.

[0021] Further, the weight-to-volume ratio (g / mL) of the iron-manganese bimetallic ion complex and the hydrogen peroxide is 1:(1-3).

[0022] The above technical solution provided by the embodiments of the present invention has at least the following advantages compared with the prior art:

[0023] The embodiments of the present invention provide a method for treating wastewater containing amantadine hydrochloride based on the Fenton method. By using a ferromanganese bimetallic ion complex prepared by hydrothermally treating a divalent iron salt, a divalent manganese salt, a fluorine-containing imidazolium salt ionic liquid compound, and a carrier material in combination with hydrogen peroxide, a Fenton-like reagent is obtained. Due to the co-catalysis of ferromanganese bimetallic ions and the specific π-π electronic structure of the fluorine-containing imidazolium salt ionic liquid compound, on the one hand, the oxidative degradation ability of the obtained Fenton-like reagent is significantly enhanced, and at the same time, its binding ability to the object to be degraded, amantadine, is improved through hydrogen bonding, thereby significantly improving the oxidative degradation efficiency and oxidative degradation ability of amantadine wastewater. Description of the Drawings

[0024] The drawings here are incorporated into the specification and form a part of this specification, showing embodiments in line with the present invention, and are used together with the specification to explain the principles of the present invention.

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0026] Figure 1 It is a schematic flow chart of a method for treating wastewater containing amantadine hydrochloride based on the Fenton method provided by the embodiments of the present invention.

[0027] Figure 2 It is the three-dimensional fluorescence spectrum obtained by testing the wastewater containing amantadine hydrochloride to be treated in Example 1 before, during, and after Fenton oxidation degradation of the present invention.

[0028] Figure 3 It is the total ion current chromatogram of the wastewater obtained after treatment in Example 1 of the present invention. Detailed Embodiments

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the scope of protection of the present invention.

[0030] Unless otherwise specified, various raw materials, reagents, instruments, and equipment used in the present invention can be obtained through market purchases or prepared by existing methods.

[0031] The present invention provides a method for treating wastewater containing amantadine hydrochloride based on the Fenton method. As Figure 1 shown, the method for treating wastewater containing amantadine hydrochloride based on the Fenton method includes the following steps:

[0032] Obtain a Fenton-like reagent;

[0033] Add the Fenton-like reagent to the wastewater containing amantadine hydrochloride for oxidative degradation to obtain the treated wastewater;

[0034] Among them, the Fenton-like reagent is composed of an iron-manganese bimetallic ion complex and hydrogen peroxide; the iron-manganese bimetallic ion complex is prepared by hydrothermal treatment using a divalent iron salt, a divalent manganese salt, a fluorinated imidazolium salt ionic liquid compound, and a carrier material.

[0035] The embodiment of the present invention provides a method for treating wastewater containing amantadine hydrochloride based on the Fenton method. By using the iron-manganese bimetallic ion complex prepared by hydrothermal treatment of a divalent iron salt, a divalent manganese salt, a fluorinated imidazolium salt ionic liquid compound, and a carrier material in combination with hydrogen peroxide, a Fenton-like reagent is obtained. This Fenton-like reagent, through the co-catalysis of iron-manganese bimetallic ions and the specific π-π electron structure of the fluorinated imidazolium salt ionic liquid compound, on the one hand significantly enhances the oxidative degradation ability of the obtained Fenton-like reagent, and at the same time improves its binding ability to the object to be degraded - amantadine through hydrogen bond interaction, thereby significantly improving the oxidative degradation efficiency and oxidative degradation ability of amantadine wastewater.

[0036] The method for treating wastewater containing amantadine hydrochloride based on the Fenton method provided by the present invention is simple, efficient, and mild in conditions. The COD removal rate of the wastewater containing amantadine hydrochloride can reach more than 90% within a treatment time of 5 minutes.

[0037] In some specific embodiments, the preparation method of the iron-manganese bimetallic ion complex includes the following steps:

[0038] Add a divalent iron salt, a divalent manganese salt, and a fluorinated imidazolium salt ionic liquid compound to water and stir to mix to obtain a mixture;

[0039] Add a carrier material to the mixture and stir to mix, then transfer it to a closed reaction kettle for hydrothermal treatment and drying to obtain the iron-manganese bimetallic ion complex.

[0040] In some specific embodiments, the weight ratio of the ferrous salt, the manganous salt, the fluorinated imidazolium salt ionic liquid compound and the carrier material is (3 - 5):(1 - 2):(0.1 - 0.5):(5 - 8); the added weight of water is 10 - 15 times the total weight of the ferrous salt, the manganous salt, the fluorinated imidazolium salt ionic liquid compound and the carrier material.

[0041] In some specific embodiments, the carrier material is composed of diatomite powder and hydrotalcite powder with a weight ratio of (15 - 20):(1 - 3). The hydrotalcite powder can be directly obtained by crushing commercially available magnesium aluminum hydrotalcite (CAS: 11097 - 59 - 9) and passing through a 100 - 200 mesh sieve, and the diatomite powder can also be directly used as a commercially available product.

[0042] In some specific embodiments, the fluorinated imidazolium salt ionic liquid compound includes at least one of 1 - butyl - 3 - methylimidazolium trifluoromethanesulfonate and 1 - butyl - 3 - methylimidazolium tetrafluoroborate.

[0043] In some specific embodiments, the ferrous salt includes at least one of ferrous sulfate and ferrous chloride; the manganous salt includes at least one of manganese sulfate, manganese acetate and manganese chloride.

[0044] In some specific embodiments, the working parameters of the hydrothermal treatment include: the temperature is 180 - 220 °C and the time is 24 - 48 hours.

[0045] In some specific embodiments, the steps of adding the Fenton - like reagent to the amantadine hydrochloride - containing wastewater for oxidative degradation to obtain the treated wastewater include the following process:

[0046] Adding the iron - manganese bimetallic ion complex to the amantadine hydrochloride - containing wastewater for dissolution, and then adjusting the pH of the system to 3 - 4 to obtain a first wastewater system;

[0047] Adding hydrogen peroxide with a weight percentage of 30% - 40% to the first wastewater system for oxidative degradation, and then adjusting the pH to 11 - 12 to obtain the treated wastewater.

[0048] In some specific embodiments, the molar concentration of the iron - manganese bimetallic ion complex in the first wastewater system is 0.005 - 0.02 mol / L, and the time of the oxidative degradation is ≥5 minutes.

[0049] In some specific embodiments, the weight - to - volume ratio (g / mL) of the iron - manganese bimetallic ion complex and the hydrogen peroxide is 1:(1 - 3).

[0050] It should be noted that for the raw materials involved in the method for treating amantadine hydrochloride-containing wastewater based on the Fenton method provided in the embodiments of the present invention, unless otherwise specifically stated or limited, commercially available products can be used. At the same time, unless otherwise specifically stated or limited in this method, the process steps in the existing method for treating amantadine wastewater by the Fenton method can be followed or existing equipment can be directly used, and details will not be repeated in this application document.

[0051] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention. The experimental methods without specific conditions in the following embodiments are usually determined according to national standards. If there is no corresponding national standard, they are carried out according to general international standards, conventional conditions, or the conditions recommended by the manufacturer.

[0052] Example 1

[0053] This example provides a method for treating amantadine hydrochloride-containing wastewater based on the Fenton method, including the following steps:

[0054] Step (1), preparing an iron-manganese bimetallic ion complex: adding a divalent iron salt (specifically ferrous sulfate), a divalent manganese salt (specifically manganese sulfate), and a fluorine-containing imidazolium salt ionic liquid compound (specifically 1-butyl-3-methylimidazolium trifluoromethanesulfonate) into water and stirring and mixing to obtain a mixture;

[0055] Adding a carrier material (specifically composed of diatomaceous earth powder and magnesium-aluminum hydrotalcite powder with a weight ratio of 17:2) to the mixture, stirring and mixing, then transferring it to a closed reaction kettle and performing hydrothermal treatment at a temperature of 200 °C for 36 hours, and then vacuum drying to constant weight to obtain the iron-manganese bimetallic ion complex; wherein, the weight ratio of the divalent iron salt, the divalent manganese salt, the fluorine-containing imidazolium salt ionic liquid compound, and the carrier material is 4:1:0.3:7, and the added weight of water is 13 times the total weight of the divalent iron salt, the divalent manganese salt, the fluorine-containing imidazolium salt ionic liquid compound, and the carrier material;

[0056] Step (2), preparing amantadine hydrochloride-containing wastewater: preparing 500 mL of an amantadine hydrochloride solution with a concentration of 300 mg / L as the amantadine hydrochloride-containing wastewater to be treated and setting it aside;

[0057] Step (3), treating amantadine hydrochloride-containing wastewater: adding the iron-manganese bimetallic ion complex obtained in step (1) into the amantadine hydrochloride-containing wastewater to be treated prepared in step (2) for dissolution, and then adjusting the pH of the system to 3 to obtain a first wastewater system;

[0058] At room temperature, 35% hydrogen peroxide by weight was added to the first wastewater system for oxidative degradation for 5 minutes, and then the pH was adjusted to 11 to obtain the treated wastewater; wherein, the molar concentration of the iron-manganese bimetallic ion complex in the first wastewater system was 0.01 mol / L, and the weight-volume ratio (g / mL) of the iron-manganese bimetallic ion complex to the hydrogen peroxide was 1:2.

[0059] In this example, the potassium dichromate method was used to detect the COD in the wastewater containing amantadine hydrochloride to be treated before oxidative degradation and the treated wastewater obtained after oxidative degradation. Cr Values, and the COD removal rate was calculated; the COD removal rate in this example was 98.7%.

[0060] Example 2

[0061] This example provides a method for treating wastewater containing amantadine hydrochloride based on the Fenton method, with the following adjustments compared to Example 1: in step (1), the weight ratio of the divalent iron salt, the divalent manganese salt, the fluorinated imidazolium salt ionic liquid compound, and the carrier material was 3:2:0.1:5, and the carrier material was composed of diatomaceous earth powder and magnesium-aluminum hydrotalcite powder with a weight ratio of 15:1; the remaining steps and parameters were the same.

[0062] In this example, the potassium dichromate method was used to detect the COD in the wastewater containing amantadine hydrochloride to be treated before oxidative degradation and the treated wastewater obtained after oxidative degradation. Cr Values, and the COD removal rate was calculated; the COD removal rate in this example was 91.5%.

[0063] Example 3

[0064] This example provides a method for treating wastewater containing amantadine hydrochloride based on the Fenton method, with the following adjustments compared to Example 1: in step (1), the weight ratio of the divalent iron salt, the divalent manganese salt, the fluorinated imidazolium salt ionic liquid compound (specifically 1-butyl-3-methylimidazolium tetrafluoroborate), and the carrier material was 5:1:0.5:8, and the carrier material was composed of diatomaceous earth powder and magnesium-aluminum hydrotalcite powder with a weight ratio of 20:3; the remaining steps and parameters were the same.

[0065] In this example, the potassium dichromate method was used to detect the COD in the wastewater containing amantadine hydrochloride to be treated before oxidative degradation and the treated wastewater obtained after oxidative degradation. Cr Values, and the COD removal rate was calculated; the COD removal rate in this example was 92.9%.

[0066] Comparative Example 1

[0067] This example provides a method for treating wastewater containing amantadine hydrochloride based on the Fenton method, with the following adjustments compared to Example 1: Step (1), the preparation of the iron-manganese bimetallic ion complex is adjusted to: adding divalent manganese salt (specifically manganese sulfate) and a fluorine-containing imidazolium salt ionic liquid compound (specifically 1-butyl-3-methylimidazolium trifluoromethanesulfonate) to water and stirring and mixing to obtain a mixture; adding a carrier material (specifically composed of diatomaceous earth powder and magnesium-aluminum hydrotalcite powder with a weight ratio of 17:2) to the mixture, stirring and mixing, then transferring it to a closed reaction kettle and performing hydrothermal treatment at a temperature of 200 °C for 36 hours, and then vacuum drying to constant weight to obtain the manganese metal ion complex; wherein, the weight ratio of the divalent manganese salt, the fluorine-containing imidazolium salt ionic liquid compound, and the carrier material is 1:0.3:7, and the added weight of water is 13 times the total weight of the divalent manganese salt, the fluorine-containing imidazolium salt ionic liquid compound, and the carrier material (that is, no divalent iron salt is added in Step (1) in this example); the remaining steps and parameters are the same.

[0068] In this example, the potassium dichromate method is used to detect the COD in the wastewater containing amantadine hydrochloride to be treated before oxidation degradation and the treated wastewater obtained after oxidation degradation. Cr The value is calculated, and the COD removal rate is calculated; the COD removal rate in this example is 28.9%.

[0069] Comparative Example 2

[0070] This example provides a method for treating wastewater containing amantadine hydrochloride based on the Fenton method, with the following adjustments compared to Example 1: Step (1), the preparation of the iron-manganese bimetallic ion complex is adjusted to: adding divalent iron salt (specifically ferrous sulfate) and a fluorine-containing imidazolium salt ionic liquid compound (specifically 1-butyl-3-methylimidazolium trifluoromethanesulfonate) to water and stirring and mixing to obtain a mixture; adding a carrier material (specifically composed of diatomaceous earth powder and magnesium-aluminum hydrotalcite powder with a weight ratio of 17:2) to the mixture, stirring and mixing, then transferring it to a closed reaction kettle and performing hydrothermal treatment at a temperature of 200 °C for 36 hours, and then vacuum drying to constant weight to obtain the iron metal ion complex; wherein, the weight ratio of the divalent iron salt, the fluorine-containing imidazolium salt ionic liquid compound, and the carrier material is 4:0.3:7, and the added weight of water is 13 times the total weight of the divalent iron salt, the fluorine-containing imidazolium salt ionic liquid compound, and the carrier material (that is, no divalent manganese salt is added in Step (1) in this example); the remaining steps and parameters are the same.

[0071] In this example, the potassium dichromate method is used to detect the COD in the wastewater containing amantadine hydrochloride to be treated before oxidation degradation and the treated wastewater obtained after oxidation degradation. Cr The value is calculated, and the COD removal rate is calculated; the COD removal rate in this example is 40.5%.

[0072] Comparative Example 3

[0073] This example provides a method for treating wastewater containing amantadine hydrochloride based on the Fenton method, with the following adjustments compared to Example 1: The fluorine-containing imidazolium salt ionic liquid compound is adjusted to tributylmethylammonium chloride ionic liquid compound; the remaining steps and parameters are the same.

[0074] This example uses the potassium dichromate method to detect the COD in the wastewater containing amantadine hydrochloride to be treated before oxidation degradation and the treated wastewater obtained after oxidation degradation. Cr value, and calculate the COD removal rate; the COD removal rate in this example is 37.0%.

[0075] Comparative Example 4

[0076] This example provides a method for treating wastewater containing amantadine hydrochloride based on the Fenton method, with the following adjustments compared to Example 1: In step (1), the weight ratio of the divalent iron salt, the divalent manganese salt, the fluorine-containing imidazolium salt ionic liquid compound, and the carrier material is 4:1:1:7 (i.e., the dosage of the fluorine-containing imidazolium salt ionic liquid compound is too much); the remaining steps and parameters are the same.

[0077] This example uses the potassium dichromate method to detect the COD in the wastewater containing amantadine hydrochloride to be treated before oxidation degradation and the treated wastewater obtained after oxidation degradation. Cr value, and calculate the COD removal rate; the COD removal rate in this example is 42.6%.

[0078] Test Example

[0079] This example conducted three-dimensional fluorescence spectroscopy (EEM) analysis on the wastewater containing amantadine hydrochloride to be treated in Example 1 before, during, and after Fenton oxidation degradation, and the results are as Figure 2 shown, Figure 2 in: Figure (a) is the test result before Fenton oxidation degradation, Figure (b) is the test result during Fenton oxidation degradation (for 2 min), and Figure (c) is the test result after Fenton oxidation degradation. Tyrosine-like protein substances (λ Ex / λ Em is 270 nm / 300 nm), aromatic substances (λ Ex / λ Em is 225 nm / 290 nm), and tryptophan-like protein substances (λ Ex / λ Em is 300 nm / 350 nm) appeared during the reaction and finally all disappeared. This indicates that amantadine hydrochloride in the reaction was oxidized and degraded into various intermediate products, and then further oxidized into small molecules.

[0080] Meanwhile, in this example, GC-MS analysis was also carried out on the wastewater obtained after treatment in Example 1. The total ion current chromatogram and the detected substances are as follows Figure 3 and shown in Table 1. A total of 16 substances were detected in the degradation residue. A small part of them are long-chain alkanes, and most of them are long-chain alcohols, amides and esters. It is proved that amantadine hydrochloride has been effectively catalytically degraded, and the intermediate products of degradation are long-chain alkanes and their partial oxidation products.

[0081] Table 1

[0082]

[0083] In summary, the embodiment of the present invention provides a method for treating amantadine hydrochloride-containing wastewater based on the Fenton method. This method oxidatively degrades the amantadine hydrochloride-containing wastewater by using a specific Fenton-like reagent, significantly improving the oxidative degradation efficiency and oxidative degradation ability of amantadine wastewater, and providing a new means for the treatment of amantadine wastewater.

[0084] The various embodiments of the present invention may exist in the form of a range; it should be understood that the description in the form of a range is only for convenience and brevity, and should not be construed as a rigid limitation on the scope of the present invention; therefore, it should be considered that the described range description has specifically disclosed all possible sub-ranges and individual values within that range. For example, it should be considered that the range description from 1 to 6 has specifically disclosed sub-ranges such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., and individual numbers within that range, such as 1, 2, 3, 4, 5, and 6, and this applies regardless of the range. Additionally, whenever a numerical range is indicated herein, it means including any cited number (fraction or integer) within the indicated range.

[0085] The above are only specific embodiments of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features claimed herein.

Claims

1. A method for treating wastewater containing amantadine hydrochloride based on the Fenton method, characterized in that, The method for treating wastewater containing amantadine hydrochloride based on the Fenton method comprises the following steps: Obtaining a Fenton-like reagent; Adding the Fenton-like reagent to the wastewater containing amantadine hydrochloride for oxidative degradation to obtain the treated wastewater; Wherein, the Fenton-like reagent is composed of an iron-manganese bimetallic ion complex and hydrogen peroxide; the iron-manganese bimetallic ion complex is prepared by hydrothermal treatment using a divalent iron salt, a divalent manganese salt, a fluorine-containing imidazolium salt ionic liquid compound, and a carrier material; The preparation method of the iron-manganese bimetallic ion complex comprises the following steps: Adding the divalent iron salt, the divalent manganese salt, and the fluorine-containing imidazolium salt ionic liquid compound into water and stirring and mixing to obtain a mixture; Adding the carrier material to the mixture, stirring and mixing, then transferring it to a closed reaction kettle for hydrothermal treatment, and drying to obtain the iron-manganese bimetallic ion complex; The weight ratio of the divalent iron salt, the divalent manganese salt, the fluorine-containing imidazolium salt ionic liquid compound, and the carrier material is (3 - 5):(1 - 2):(0.1 - 0.5):(5 - 8); the added weight of water is 10 - 15 times the total weight of the divalent iron salt, the divalent manganese salt, the fluorine-containing imidazolium salt ionic liquid compound, and the carrier material; The working parameters of the hydrothermal treatment include: the temperature is 180 - 220 °C, and the time is 24 - 48 hours.

2. The method for treating wastewater containing amantadine hydrochloride based on the Fenton method according to claim 1, wherein, The carrier material is composed of diatomite powder and hydrotalcite powder with a weight ratio of (15 - 20):(1 - 3).

3. The method for treating wastewater containing amantadine hydrochloride based on the Fenton method according to claim 1, wherein The fluorine-containing imidazolium salt ionic liquid compound includes at least one of 1-butyl-3-methylimidazolium trifluoromethanesulfonate and 1-butyl-3-methylimidazolium tetrafluoroborate.

4. The method for treating amantadine hydrochloride-containing wastewater based on the Fenton method according to claim 1, wherein The divalent iron salt includes at least one of ferrous sulfate and ferrous chloride; the divalent manganese salt includes at least one of manganese sulfate, manganese acetate, and manganese chloride.

5. The method for treating wastewater containing amantadine hydrochloride based on the Fenton method according to claim 1, characterized in that, The step of adding the Fenton-like reagent to the wastewater containing amantadine hydrochloride for oxidative degradation to obtain the treated wastewater includes the following process: Adding the iron-manganese bimetallic ion complex to the wastewater containing amantadine hydrochloride for dissolution, and then adjusting the pH of the system to 3 - 4 to obtain a first wastewater system; Adding hydrogen peroxide with a weight percentage of 30% - 40% to the first wastewater system for oxidative degradation, and then adjusting the pH to 11 - 12 to obtain the treated wastewater.

6. The method for treating wastewater containing amantadine hydrochloride based on the Fenton method according to claim 5, characterized in that, The molar concentration of the iron-manganese bimetallic ion complex in the first wastewater system is 0.005 - 0.02 mol / L, and the time of the oxidative degradation is ≥ 5 minutes.

7. The method for treating amantadine hydrochloride-containing wastewater based on the Fenton method according to claim 6, wherein The weight-to-volume ratio (g / mL) of the iron-manganese bimetallic ion complex and the hydrogen peroxide is 1:(1 - 3).

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