A sewage treatment agent containing 1,6-hexanediol and a preparation method thereof

Abstract

The present invention relates to the technical field of sewage treatment, and discloses a sewage treatment agent containing 1,6-hexanediol and a preparation method thereof. The present invention adds 1,6-hexanediol, quaternized lysine and epoxidized magnolol into a stirrer, and stirs to obtain a sewage treatment agent containing 1,6-hexanediol. Siloxane in the quaternized lysine of the present invention is hydrolyzed into a hydroxyl-containing functional group, which can form a stable complex with metal ions, and effectively remove heavy metal ions by chemical adsorption; wherein the quaternary ammonium salt group and the sulfonic acid group remove heavy metal ions in sewage by complexation. The triazine group contained in the quaternized lysine and the epoxidized magnolol is a six-membered heterocyclic structure containing three nitrogen atoms, and these nitrogen atoms can be used as coordinating atoms to form a stable coordination with metal ions due to their strong electronegativity, and 1,6-hexanediol itself has a good removal effect on heavy metal ions.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, in particular to a sewage treatment agent containing 1,6-hexanediol and a preparation method thereof. Background Art

[0002] Industrial enterprises use a large amount of water in many types, which contain a large amount of heavy metal ions. These heavy metal ions enter the environment through various channels and are eventually discharged into rivers and lakes in the form of wastewater. Because the self-purification capacity of natural water bodies is limited, if the pollutants discharged into the water body exceed the ecological carrying capacity of the natural water body or cause irreversible pollution to it, it is mostly necessary to take engineering measures to eliminate the pollution, but its governance cycle is long and the governance cost is extremely high. For example, patent CN118026334A discloses a composite sewage treatment agent containing modified diatomite and its preparation method and application. The composite sewage treatment agent of the invention is used to treat papermaking wastewater with good effect, can remove organic pollutants and heavy metal pollution, also has good treatment effect at low temperature, high storage stability, but its composition is relatively complex, cost is high, and the components also contain aluminum ions that are harmful to the body. Summary of the invention

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies in the prior art, the present invention provides a sewage treatment agent containing 1,6-hexanediol and a preparation method thereof, which has a good removal effect on heavy metal ions.

[0005] (II) Technical solution

[0006] To achieve the above objectives, the present invention provides the following technical solutions: a 1,6-hexanediol-containing sewage treatment agent and a preparation method thereof, comprising the following components by weight: 10-16 parts by weight of 1,6-hexanediol, 5-8 parts by weight of quaternized lysine, and 7-12 parts by weight of epoxidized magnolol.

[0007] Preferably, the preparation method of the quaternized lysine is:

[0008] (1) Add 2,4,6-tris(4-formylphenyl)-1,3,5-triazine and L-lysine to ethanol, heat to 25-40°C and react for 6-10 hours, cool to room temperature, add sodium borohydride and react for 1-3 hours, then add dilute hydrochloric acid to adjust the pH of the solution to 3-4, precipitate, filter and recrystallize the product with ethanol to obtain triazine lysine;

[0009] (2) Add propenyl-1,3-sultone, tetrahydrofuran solvent and chloroplatinic acid catalyst to a reactor, activate at 45-70°C for 30-40 minutes, then add 1,1,3,3-tetramethyldisiloxane dropwise for 50-70 minutes, continue the reaction at 50-60°C for 5-8 hours, cool to room temperature after the reaction, add activated carbon adsorbent, ultrasonically vibrate for 30-40 minutes, remove the catalyst chloroplatinic acid, filter, and rotary evaporate to obtain siloxane-modified sultone;

[0010] (3) Add triazine lysine and (dimethylaminomethyl)phenol to N,N-dimethylformamide solvent, stir and mix, continue to add p-toluenesulfonic acid catalyst, react at 70-90°C for 5-8h, then continue to add siloxane-modified sultone, react at 75-95°C for 6-9h, and then distill under reduced pressure, wash and dry to obtain quaternized lysine.

[0011] Preferably, in (1), the mass ratio of 2,4,6-tris(4-formylphenyl)-1,3,5-triazine, L-lysine and sodium borohydride is 1:2.1-2.6:0.3-0.6.

[0012] Preferably, the mass ratio of propenyl-1,3-sultone, chloroplatinic acid catalyst and 1,1,3,3-tetramethyldisiloxane in (2) is 0.8-1.3:0.01-0.03:1.

[0013] Preferably, the mass ratio of triazine lysine, (dimethylaminomethyl)phenol, p-toluenesulfonic acid catalyst, and siloxane-modified sultone in (3) is 1.1-1.3:1:0.01-0.03:1.2-1.5.

[0014] Preferably, the preparation method of the epoxidized magnolol is:

[0015] S1. 10-18 parts by weight of thionyl chloride and 8-14 parts by weight of triazine lysine were added to the reactor, and the reaction was carried out at 60-80 ° C for 4-7h, and then cooled to room temperature, concentrated under reduced pressure, washed with petroleum ether, and dried to obtain an intermediate;

[0016] S2. 7-13 parts by weight of the intermediate and 6-9 parts by weight of magnolol are added to N,N-dimethylformamide, stirred to dissolve, and then 1-2 parts by weight of a pyridine catalyst are added thereto, and the reaction is carried out at 80-95° C. for 7-15 hours, and then rotary distilled, filtered, and washed to obtain an olefination intermediate;

[0017] S3. Add 4-7 parts by weight of the olefination intermediate to a toluene solvent, stir evenly, then add 5-8 parts by weight of an aqueous hydrogen peroxide solution, react at 30-40°C for 3-6 hours, extract after the reaction, dry the organic phase, and distill under reduced pressure to obtain epoxidized magnolol.

[0018] Preferably, the preparation method of the 1,6-hexanediol-containing sewage treatment agent is: adding 1,6-hexanediol, quaternized lysine, and epoxidized magnolol into a stirrer, stirring for 10-13 minutes, and obtaining the 1,6-hexanediol-containing sewage treatment agent.

[0019] 3. Beneficial technical effects

[0020] The invention prepares a sewage treatment agent containing 1,6-hexanediol by adding 1,6-hexanediol, quaternized lysine and epoxidized magnolol into a stirrer and stirring the mixture.

[0021] The aldehyde group in 2,4,6-tris(4-formylphenyl)-1,3,5-triazine and the amino group in L-lysine are subjected to condensation reaction, and then the reaction is continued under the action of sodium borohydride to convert the double bond into a single bond and introduce a carboxyl group, thereby obtaining triazine lysine; the alkenyl group in propenyl-1,3-sultone and the silicon-hydrogen bond in 1,1,3,3-tetramethyldisiloxane are subjected to addition reaction to introduce sultone, thereby obtaining siloxane-modified sultone; the carboxyl group in triazine lysine and the phenolic hydroxyl group in (dimethylaminomethyl)phenol are subjected to esterification reaction to generate an ester group and introduce a tertiary amine group, which is further reacted with the sultone group in the siloxane-modified sultone to generate a quaternary ammonium salt, thereby obtaining quaternized lysine.

[0022] The thionyl chloride is reacted with the carboxyl group in triazine lysine to generate an acyl chloride group, thereby obtaining an intermediate. The magnolol is then subjected to an esterification reaction to introduce an olefinic group, thereby obtaining an olefinic intermediate. Finally, an epoxidation reaction is performed to obtain epoxidized magnolol.

[0023] The siloxane in the quaternized lysine of the present invention is hydrolyzed into a hydroxyl-containing functional group, which can form a stable complex with metal ions, effectively remove heavy metal ions by chemical adsorption, and the generated hydroxyl group and the epoxy group in the epoxidized magnolol undergo a ring-opening reaction to form a cross-linked network, and the heavy metal ions in the sewage are "netted and swept" to achieve a better removal effect; wherein the quaternary ammonium salt group and the sulfonic acid group remove the heavy metal ions in the sewage by complexation. The triazine group contained in the quaternized lysine and the epoxidized magnolol is a six-membered heterocyclic structure containing three nitrogen atoms. These nitrogen atoms can be used as coordinating atoms to form a stable coordination with metal ions due to their strong electronegativity. At the same time, the triazine group contains three substitutions, which also increases the substitution degree of the quaternary ammonium salt, the sulfonic acid group, and the epoxy group, thereby achieving a better removal effect. 1,6-hexanediol itself has a good removal effect on heavy metal ions. DETAILED DESCRIPTION Example 1

[0024] (1) Add 2,4,6-tris(4-formylphenyl)-1,3,5-triazine and L-lysine to ethanol, heat to 25°C and react for 6 hours, cool to room temperature, add sodium borohydride, wherein the mass ratio of 2,4,6-tris(4-formylphenyl)-1,3,5-triazine, L-lysine and sodium borohydride is 1:2.1:0.3, react for 1 hour, add dilute hydrochloric acid to adjust the pH of the solution to 3 after reaction, precipitate, filter the product and recrystallize it with ethanol to obtain triazine lysine;

[0025] (2) Add propenyl-1,3-sultone, tetrahydrofuran solvent and chloroplatinic acid catalyst to the reactor, activate at 45°C for 30 minutes, then add 1,1,3,3-tetramethyldisiloxane dropwise, wherein the mass ratio of propenyl-1,3-sultone, chloroplatinic acid catalyst and 1,1,3,3-tetramethyldisiloxane is 0.8:0.01:1, the addition time is 50 minutes, continue to react at 50°C for 5 hours, cool to room temperature after the reaction, add activated carbon adsorbent, ultrasonically vibrate for 30 minutes, remove the catalyst chloroplatinic acid, filter and rotary evaporate to obtain siloxane-modified sultone;

[0026] (3) Add triazine lysine and (dimethylaminomethyl) phenol to N,N-dimethylformamide solvent, stir and mix, continue to add p-toluenesulfonic acid catalyst, react at 70°C for 5-8h, and then continue to add siloxane-modified sultone, wherein the mass ratio of triazine lysine, (dimethylaminomethyl) phenol, p-toluenesulfonic acid catalyst, and siloxane-modified sultone is 1.1:1:0.01:1.2, react at 75°C for 6h, and then perform reduced pressure distillation after completion, wash and dry to obtain quaternized lysine;

[0027] (4) adding 10 parts by weight of thionyl chloride and 8 parts by weight of triazine lysine to a reactor, reacting at 60° C. for 4 h, cooling to room temperature, concentrating under reduced pressure, washing with petroleum ether, and drying to obtain an intermediate;

[0028] (5) adding 7 parts by weight of the intermediate and 6 parts by weight of magnolol to N,N-dimethylformamide, stirring to dissolve, and then adding 1 part by weight of pyridine catalyst thereto, reacting at 80° C. for 7 hours, and then rotary distilling, filtering, and washing to obtain an olefination intermediate;

[0029] (6) adding 4 parts by weight of the olefination intermediate to a toluene solvent, stirring evenly, and then adding 5 parts by weight of an aqueous hydrogen peroxide solution thereto, reacting at 30° C. for 3 h. After the reaction is completed, extracting, drying the organic phase, and distilling under reduced pressure to obtain epoxidized magnolol;

[0030] (7) Add 10 parts by weight of 1,6-hexanediol, 5 parts by weight of quaternized lysine, and 7 parts by weight of epoxidized magnolol into a stirrer and stir for 10 minutes to obtain a wastewater treatment agent containing 1,6-hexanediol. Example 2

[0031] (1) Add 2,4,6-tris(4-formylphenyl)-1,3,5-triazine and L-lysine to ethanol, heat to 40°C for reaction for 10 hours, cool to room temperature, add sodium borohydride, wherein the mass ratio of 2,4,6-tris(4-formylphenyl)-1,3,5-triazine, L-lysine and sodium borohydride is 1:2.6:0.6, react for 3 hours, add dilute hydrochloric acid to adjust the pH of the solution to 4 after reaction, precipitate, filter the product and recrystallize it with ethanol to obtain triazine lysine;

[0032] (2) Add propenyl-1,3-sultone, tetrahydrofuran solvent and chloroplatinic acid catalyst to the reactor, activate at 70°C for 40 minutes, then dropwise add 1,1,3,3-tetramethyldisiloxane, wherein the mass ratio of propenyl-1,3-sultone, chloroplatinic acid catalyst and 1,1,3,3-tetramethyldisiloxane is 1.3: 0.03: 1, the dropwise addition time is 70 minutes, and the reaction is continued at 60°C for 8 hours. After the reaction is completed, cool to room temperature, add activated carbon adsorbent, ultrasonically vibrate for 40 minutes, remove the catalyst chloroplatinic acid, filter and rotary evaporate to obtain siloxane-modified sultone;

[0033] (3) Add triazine lysine and (dimethylaminomethyl) phenol to N,N-dimethylformamide solvent, stir and mix, continue to add p-toluenesulfonic acid catalyst, react at 90°C for 8 hours, and then continue to add siloxane-modified sultone, wherein the mass ratio of triazine lysine, (dimethylaminomethyl) phenol, p-toluenesulfonic acid catalyst, and siloxane-modified sultone is 1.3:1:0.03:1.5, react at 95°C for 9 hours, and then distill under reduced pressure, wash and dry to obtain quaternized lysine;

[0034] (4) Add 18 parts by weight of thionyl chloride and 14 parts by weight of triazine lysine into a reactor, react at 80° C. for 7 h, cool to room temperature, concentrate under reduced pressure, wash with petroleum ether, and dry to obtain an intermediate;

[0035] (5) adding 13 parts by weight of the intermediate and 9 parts by weight of magnolol to N,N-dimethylformamide, stirring to dissolve, adding 2 parts by weight of pyridine catalyst, reacting at 95° C. for 15 hours, and then rotary distilling, filtering, and washing to obtain an olefination intermediate;

[0036] (6) adding 7 parts by weight of the olefination intermediate to a toluene solvent, stirring evenly, and then adding 8 parts by weight of an aqueous hydrogen peroxide solution thereto, reacting at 40° C. for 6 hours. After the reaction is completed, extracting, drying the organic phase, and distilling under reduced pressure to obtain epoxidized magnolol;

[0037] (7) 16 parts by weight of 1,6-hexanediol, 8 parts by weight of quaternized lysine, and 12 parts by weight of epoxidized magnolol were added into a stirrer and stirred for 13 minutes to obtain a wastewater treatment agent containing 1,6-hexanediol. Example 3

[0038] (1) Add 2,4,6-tris(4-formylphenyl)-1,3,5-triazine and L-lysine to ethanol, heat to 62°C and react for 8 hours, cool to room temperature, add sodium borohydride, wherein the mass ratio of 2,4,6-tris(4-formylphenyl)-1,3,5-triazine, L-lysine and sodium borohydride is 1:2.3:0.4, react for 2 hours, add dilute hydrochloric acid to adjust the pH of the solution to 3.5 after reaction, precipitate, filter the product and recrystallize it with ethanol to obtain triazine lysine;

[0039] (2) Add propenyl-1,3-sultone, tetrahydrofuran solvent and chloroplatinic acid catalyst to the reactor, activate at 57°C for 35 minutes, then dropwise add 1,1,3,3-tetramethyldisiloxane, wherein the mass ratio of propenyl-1,3-sultone, chloroplatinic acid catalyst and 1,1,3,3-tetramethyldisiloxane is 1:0.02:1, the dropwise addition time is 60 minutes, and the reaction is continued at 55°C for 6 hours. After the reaction is completed, cool to room temperature, add activated carbon adsorbent, ultrasonically vibrate for 35 minutes, remove the catalyst chloroplatinic acid, filter and rotary evaporate to obtain siloxane-modified sultone;

[0040] (3) Add triazine lysine and (dimethylaminomethyl) phenol to N,N-dimethylformamide solvent, stir and mix, continue to add p-toluenesulfonic acid catalyst, react at 80°C for 6 hours, and then continue to add siloxane-modified sultone, wherein the mass ratio of triazine lysine, (dimethylaminomethyl) phenol, p-toluenesulfonic acid catalyst, and siloxane-modified sultone is 1.2:1:0.02:1.3, react at 85°C for 7 hours, and then perform reduced pressure distillation after completion, wash and dry to obtain quaternized lysine;

[0041] (4) Add 14 parts by weight of thionyl chloride and 11 parts by weight of triazine lysine into a reactor, react at 70° C. for 5 h, cool to room temperature, concentrate under reduced pressure, wash with petroleum ether, and dry to obtain an intermediate;

[0042] (5) adding 10 parts by weight of the intermediate and 7 parts by weight of magnolol to N,N-dimethylformamide, stirring to dissolve, and then adding 1.5 parts by weight of pyridine catalyst thereto, reacting at 87° C. for 11 hours, and then subjecting to rotary distillation, filtering, and washing to obtain an olefination intermediate;

[0043] (6) adding 5 parts by weight of the olefination intermediate to a toluene solvent, stirring evenly, and then adding 6 parts by weight of an aqueous hydrogen peroxide solution thereto, reacting at 35° C. for 4 hours. After the reaction is completed, extracting, drying the organic phase, and distilling under reduced pressure to obtain epoxidized magnolol;

[0044] (7) 13 parts by weight of 1,6-hexanediol, 6 parts by weight of quaternized lysine, and 9 parts by weight of epoxidized magnolol were added into a stirrer and stirred for 11 minutes to obtain a wastewater treatment agent containing 1,6-hexanediol. Example 4

[0045] (1) Add 2,4,6-tris(4-formylphenyl)-1,3,5-triazine and L-lysine to ethanol, heat to 25°C and react for 6 hours, cool to room temperature, add sodium borohydride, wherein the mass ratio of 2,4,6-tris(4-formylphenyl)-1,3,5-triazine, L-lysine and sodium borohydride is 1:2.1:0.3, react for 1 hour, add dilute hydrochloric acid to adjust the pH of the solution to 3 after reaction, precipitate, filter the product and recrystallize it with ethanol to obtain triazine lysine;

[0046] (2) Add propenyl-1,3-sultone, tetrahydrofuran solvent and chloroplatinic acid catalyst to the reactor, activate at 45°C for 30 minutes, then add 1,1,3,3-tetramethyldisiloxane dropwise, wherein the mass ratio of propenyl-1,3-sultone, chloroplatinic acid catalyst and 1,1,3,3-tetramethyldisiloxane is 0.8:0.01:1, the addition time is 50 minutes, continue to react at 50°C for 5 hours, cool to room temperature after the reaction, add activated carbon adsorbent, ultrasonically vibrate for 30 minutes, remove the catalyst chloroplatinic acid, filter and rotary evaporate to obtain siloxane-modified sultone;

[0047] (3) Add triazine lysine and (dimethylaminomethyl) phenol to N,N-dimethylformamide solvent, stir and mix, continue to add p-toluenesulfonic acid catalyst, react at 90°C for 8 hours, and then continue to add siloxane-modified sultone, wherein the mass ratio of triazine lysine, (dimethylaminomethyl) phenol, p-toluenesulfonic acid catalyst, and siloxane-modified sultone is 1.3:1:0.03:1.5, react at 95°C for 9 hours, and then distill under reduced pressure, wash and dry to obtain quaternized lysine;

[0048] (4) Add 18 parts by weight of thionyl chloride and 14 parts by weight of triazine lysine into a reactor, react at 80° C. for 7 h, cool to room temperature, concentrate under reduced pressure, wash with petroleum ether, and dry to obtain an intermediate;

[0049] (5) adding 10 parts by weight of the intermediate and 7 parts by weight of magnolol to N,N-dimethylformamide, stirring to dissolve, and then adding 1.5 parts by weight of pyridine catalyst thereto, reacting at 87° C. for 11 hours, and then subjecting to rotary distillation, filtering, and washing to obtain an olefination intermediate;

[0050] (6) adding 5 parts by weight of the olefination intermediate to a toluene solvent, stirring evenly, and then adding 6 parts by weight of an aqueous hydrogen peroxide solution thereto, reacting at 35° C. for 4 hours. After the reaction is completed, extracting, drying the organic phase, and distilling under reduced pressure to obtain epoxidized magnolol;

[0051] (7) 13 parts by weight of 1,6-hexanediol, 6 parts by weight of quaternized lysine, and 9 parts by weight of epoxidized magnolol were added into a stirrer and stirred for 11 minutes to obtain a wastewater treatment agent containing 1,6-hexanediol.

[0052] Comparative Example 1

[0053] 13 parts by weight of 1,6-hexanediol and 6 parts by weight of quaternized lysine were added into a stirrer and stirred for 11 minutes to obtain a sewage treatment agent containing 1,6-hexanediol.

[0054] Comparative Example 2

[0055] 13 parts by weight of 1,6-hexanediol and 9 parts by weight of epoxidized magnolol were added into a stirrer and stirred for 11 minutes to obtain a sewage treatment agent containing 1,6-hexanediol.

[0056] Wastewater treatment testing

[0057] The adsorption test and adsorption-desorption cycle test of different metal ions were carried out. The specific steps were as follows: according to the molecular weight of Pb(NO3)2 and 3CdSO4·8H2O, a certain amount of the metal compound was weighed to prepare the following concentrations of heavy metal solutions: Pb 2+ =89.5mg / L; Cd 2+ =78.2mg / L; and adjusting the pH to 8, then adding the composite materials prepared in the embodiments and comparative examples to each group of equal amounts of heavy metal solutions to make their concentration 1000ppm, reacting for 10min and allowing to settle, taking the upper layer of liquid and centrifuging for 20min, then taking the upper layer of liquid after centrifugation and filtering with a double-layer 0.22 microporous filter membrane to obtain a clarified solution to be tested, testing the heavy metal ion concentration in the clarified solution to be tested, and calculating the heavy metal ion removal rate.

[0058] Table 1: Heavy metal ion removal rate test.

[0059] Removal rate (%) <![CDATA[Pb 2+ ]]> <![CDATA[Cd 2+ ]]> Example 1 96.1 94.8 Example 2 97.6 96.2 Example 3 96.8 95.9 Example 4 95.6 94.1 Comparative Example 1 73.2 72.6 Comparative Example 2 71.4 71.1

[0060] It can be seen from Table 1 that the 1,6-hexanediol-containing sewage treatment agent prepared by the present invention, Examples 1-4, have better effects of removing heavy metal ions than Comparative Examples 1-2.

[0061] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A sewage treatment agent containing 1,6-hexanediol, characterized in that: The invention comprises the following components by weight: 10-16 parts by weight of 1,6-hexanediol, 5-8 parts by weight of quaternized lysine, and 7-12 parts by weight of epoxidized magnolol; The preparation method of the quaternized lysine is: (1) Add 2,4,6-tris(4-formylphenyl)-1,3,5-triazine and L-lysine to ethanol, heat to 25-40°C and react for 6-10 hours, cool to room temperature, add sodium borohydride and react for 1-3 hours, then add dilute hydrochloric acid to adjust the pH of the solution to 3-4, precipitate, filter and recrystallize the product with ethanol to obtain triazine lysine; (2) Add propenyl-1,3-sultone, tetrahydrofuran solvent and chloroplatinic acid catalyst to a reactor, activate at 45-70°C for 30-40 minutes, then add 1,1,3,3-tetramethyldisiloxane dropwise for 50-70 minutes, continue the reaction at 50-60°C for 5-8 hours, cool to room temperature after the reaction, add activated carbon adsorbent, ultrasonically vibrate for 30-40 minutes, remove the catalyst chloroplatinic acid, filter, and rotary evaporate to obtain siloxane-modified sultone; (3) Add triazine lysine and (dimethylaminomethyl) phenol to N,N-dimethylformamide solvent, stir and mix, continue to add p-toluenesulfonic acid catalyst, react at 70-90°C for 5-8h, then continue to add siloxane-modified sultone, react at 75-95°C for 6-9h, and after completion, perform vacuum distillation, wash and dry to obtain quaternized lysine; The preparation method of the epoxidized magnolol is: S1. Add 10-18 parts by weight of thionyl chloride and 8-14 parts by weight of triazine lysine to the reactor, react at 60-80 ° C for 4-7h, cool to room temperature, concentrate under reduced pressure, wash with petroleum ether, and dry to obtain an intermediate; S2. 7-13 parts by weight of the intermediate and 6-9 parts by weight of magnolol are added to N, N-dimethylformamide, stirred to dissolve, and then 1-2 parts by weight of pyridine catalyst are added thereto, and the reaction is carried out at 80-95 ° C for 7-15h, and then rotary distillation, filtration, washing, and obtaining an olefination intermediate; S3. Add 4-7 parts by weight of the olefination intermediate to a toluene solvent, stir evenly, then add 5-8 parts by weight of an aqueous hydrogen peroxide solution, react at 30-40°C for 3-6 hours, extract after the reaction, dry the organic phase, and distill under reduced pressure to obtain epoxidized magnolol.

2. The 1,6-hexanediol-containing sewage treatment agent according to claim 1, characterized in that: The mass ratio of 2,4,6-tris(4-formylphenyl)-1,3,5-triazine, L-lysine and sodium borohydride in (1) is 1:2.1-2.6:0.3-0.

6.

3. The 1,6-hexanediol-containing sewage treatment agent according to claim 1, characterized in that: The mass ratio of propenyl-1,3-sultone, chloroplatinic acid catalyst and 1,1,3,3-tetramethyldisiloxane in (2) is 0.8-1.3:0.01-0.03:

1.

4. The 1,6-hexanediol-containing sewage treatment agent according to claim 1, characterized in that: The mass ratio of triazine lysine, (dimethylaminomethyl)phenol, p-toluenesulfonic acid catalyst and siloxane-modified sultone in (3) is 1.1-1.3:1:0.01-0.03:1.2-1.

5.

5. A method for preparing a sewage treatment agent containing 1,6-hexanediol as claimed in any one of claims 1 to 4, characterized in that: The preparation method of the sewage treatment agent containing 1,6-hexanediol is as follows: 1,6-hexanediol, quaternized lysine and epoxidized magnolol are added into a stirrer, and stirred for 10-13 minutes to obtain the sewage treatment agent containing 1,6-hexanediol.