Polymer remover for removing harmful ions in sewage and preparation method thereof

Abstract

The invention relates to a polymer remover for removing harmful ions in sewage and a preparation method, and belongs to the technical field of polymer removers, the polymer remover comprises the following raw materials by weight: 20-30 parts of polyaluminum chloride, 10-15 parts of polyferric sulfate, 80-100 parts of polyacrylamide, 80-100 parts of chitosan, 1.5-3 parts of hydrochloric acid, 3-6 parts of sulfuric acid, 1.6-2 parts of sodium hydroxide, and 1-2 parts of a cross-linking agent. 0.2-0.5 part of a stabilizer and the balance of water. According to the polymer remover for removing the harmful ions in the sewage and the preparation method, the polymer remover is prepared from the polyaluminum chloride, the polyferric sulfate, the polyacrylamide, the chitosan, the hydrochloric acid, the sulfuric acid, the sodium hydroxide, the cross-linking agent and the stabilizer, so that efficient and selective adsorption of target ions is realized, and the concentration of the harmful ions in the sewage is remarkably reduced; the pollution to the environment is reduced, and the treatment cost and the environmental burden are reduced; the ecological environment is protected.

Description

Technical Field

[0001] The invention relates to the technical field of polymer removers, in particular to a polymer remover for removing harmful ions in sewage and a preparation method thereof. Background Art

[0002] Harmful ions in sewage, such as heavy metal ions (copper, zinc, lead, cadmium, etc.) and phosphate ions, pose a serious threat to the environment and human health. Although traditional sewage treatment methods, such as physical precipitation, chemical precipitation, adsorption and ion exchange, can remove these harmful ions to a certain extent, they often have problems such as low efficiency, high cost, and easy secondary pollution. Therefore, it is of great significance to develop a new type of polymer remover that is efficient, environmentally friendly and economical.

[0003] In recent years, with the rapid development of polymer material science, polymer removers have been increasingly used in the field of sewage treatment. Polymer removers have the advantages of high selectivity, large adsorption capacity, and easy regeneration, and have become an effective means of removing harmful ions from sewage. At present, a variety of polymer removers have been developed at home and abroad, such as resins, gels, fibers, etc., but there are still relatively few efficient removers for specific harmful ions.

[0004] The preparation principle of polymer removers is mainly based on the special structure and properties of polymer compounds. By synthesizing polymer compounds with specific functional groups, they can interact with harmful ions in sewage through complexation, electrostatic adsorption, etc., thereby achieving the removal of harmful ions. At the same time, by optimizing the structure and properties of polymer compounds, their removal efficiency and stability can be further improved.

[0005] Although existing polymer removers have achieved certain results in sewage treatment, there are still some shortcomings. For example, the selectivity of some polymer removers is not high enough and they are easy to interfere with other components in sewage; the regeneration performance of some polymer removers is poor and they need to be frequently replaced or treated; the cost of some polymer removers is high, which limits their wide application. In view of the shortcomings of existing polymer removers, it is of great significance to develop a new type of efficient, environmentally friendly and economical polymer remover. Therefore, we propose a polymer remover for removing harmful ions in sewage and a preparation method to solve the above problems. Summary of the invention

[0006] In view of the shortcomings of the prior art, the present invention provides a polymer remover for removing harmful ions in sewage and a preparation method thereof, which has the advantages of good environmental protection effect and low production cost, and solves the problem that the existing polymer removers contain a large amount of toxic and harmful substances and are not friendly to the ecological environment.

[0007] To achieve the above object, the present invention provides the following technical solution: a polymer remover for removing harmful ions in sewage, comprising the following raw materials in the following weight proportions:

[0008] 20-30 parts of polyaluminium chloride, 10-15 parts of polyferric sulfate, 80-100 parts of polyacrylamide, 80-100 parts of chitosan, 1.5-3 parts of hydrochloric acid, 3-6 parts of sulfuric acid, 1.6-2 parts of sodium hydroxide, 1-2 parts of crosslinking agent, 0.2-0.5 parts of stabilizer, and the balance of water.

[0009] Furthermore, the cross-linking agent is any one of an organic peroxide or a multifunctional compound or a mixture of the two.

[0010] Furthermore, the stabilizer is any one of a heat stabilizer, a light stabilizer or an antioxidant.

[0011] Furthermore, the invention comprises the following raw materials in proportion by weight: 20 parts of polyaluminium chloride, 10 parts of polyferric sulfate, 80 parts of polyacrylamide, 80 parts of chitosan, 1.5 parts of hydrochloric acid, 3 parts of sulfuric acid, 1.6 parts of sodium hydroxide, 1 part of cross-linking agent, 0.2 parts of stabilizer and the balance of water.

[0012] Furthermore, the invention comprises the following raw materials in proportion by weight: 25 parts of polyaluminium chloride, 12 parts of polyferric sulfate, 90 parts of polyacrylamide, 90 parts of chitosan, 2 parts of hydrochloric acid, 4 parts of sulfuric acid, 1.8 parts of sodium hydroxide, 1.5 parts of crosslinking agent, 0.3 parts of stabilizer and the balance of water.

[0013] Furthermore, the invention comprises the following raw materials in proportion by weight: 30 parts of polyaluminium chloride, 15 parts of polyferric sulfate, 100 parts of polyacrylamide, 100 parts of chitosan, 3 parts of hydrochloric acid, 6 parts of sulfuric acid, 2 parts of sodium hydroxide, 2 parts of crosslinking agent, 0.5 parts of stabilizer and the balance of water.

[0014] Another technical problem to be solved by the present invention is to provide a method for preparing a polymer remover for removing harmful ions in sewage, comprising the following preparation steps:

[0015] S1. Raw material preparation: respectively take and weigh polyaluminium chloride, polyferric sulfate, polyacrylamide, chitosan, hydrochloric acid, sulfuric acid, sodium hydroxide, crosslinking agent, stabilizer and water, and set aside after weighing;

[0016] S2, prepare polyaluminium chloride solution: take an appropriate amount of polyaluminium chloride, add it to twice its weight of water, stir evenly, raise the temperature to 55-60°C, keep stirring for 10-20 minutes to fully dissolve the polyaluminium chloride, add a small amount of hydrochloric acid and sulfuric acid, continue stirring to room temperature, and obtain a polyaluminium chloride solution;

[0017] S3, prepare polyferric sulfate solution: take an appropriate amount of polyferric sulfate, add it to twice its weight of water, stir evenly, raise the temperature to 55-60 ° C, keep stirring for 10-20 minutes to fully dissolve the polyferric sulfate, add a small amount of sulfuric acid and sodium hydroxide as a regulator, continue stirring to room temperature, and obtain a polyferric sulfate solution;

[0018] S4. Prepare polyacrylamide solution: Take an appropriate amount of polyacrylamide, add it to twice its weight of water, stir evenly, raise the temperature to 55-60°C, keep stirring for 10-20 minutes to fully dissolve the polyacrylamide, add a small amount of crosslinking agent and stabilizer, continue stirring until the temperature reaches room temperature, and obtain a polyacrylamide solution.

[0019] S5. Prepare chitosan solution: Take an appropriate amount of chitosan, add it to twice its weight of water, stir evenly, raise the temperature to 55-60°C, keep stirring for 10-20 minutes to fully dissolve the chitosan, add a small amount of hydrochloric acid and sulfuric acid as regulators, continue stirring until the temperature reaches room temperature, and obtain a chitosan solution.

[0020] S6, polymerization reaction; take the polyaluminium chloride solution in S2, the polyferric sulfate solution in S3, the polyacrylamide solution in S4 and the chitosan solution in S5, send the above solutions into the reaction kettle and mix them evenly, so that the above solutions are mixed to undergo a polymerization reaction, and after the polymerization reaction is completed, a polymer remover solution is obtained;

[0021] S7, subsequent treatment: take the polymer remover solution in S6, and perform ultrasonic treatment for 10-20 minutes to fully disperse it; after the dispersion is completed, increase the temperature to 60-65°C, keep it warm and stir for 12 hours to obtain a polymer remover reaction solution; after the stirring is completed, filter the polymer remover reaction solution, wash the precipitate with water, dry it under vacuum conditions, and after the vacuum treatment is completed, cool it to room temperature to obtain the polymer remover.

[0022] Furthermore, during the polymerization reaction in S6, the temperature of the reactor is 55-60° C., and the mixing time in the reactor is 4-5 hours.

[0023] Furthermore, the temperature of the vacuum condition in S7 is 60-65° C., and the drying time is 12 hours.

[0024] Compared with the prior art, the present invention provides a polymer remover for removing harmful ions in sewage and a preparation method thereof, which has the following beneficial effects:

[0025] 1. The polymer remover for removing harmful ions in sewage and the preparation method thereof, by adopting polyaluminium chloride, polyferric sulfate, polyacrylamide, chitosan, hydrochloric acid, sulfuric acid, sodium hydroxide, a crosslinking agent and a stabilizer to prepare the polymer remover, achieves efficient and selective adsorption of target ions, significantly reduces the concentration of harmful ions in sewage, and meets or exceeds the existing national and local emission standards; the polymer remover adopts environmentally friendly raw materials, reduces pollution to the environment, and at the same time, the remover can restore its adsorption capacity through simple regeneration treatment after use, realizes the recycling of resources, and reduces the processing cost and environmental burden; in addition, the remover itself will not release toxic and harmful substances during the biodegradation process, and is friendly to the ecological environment.

[0026] 2. The polymer remover for removing harmful ions in sewage and the preparation method thereof. The polymer remover prepared by the above-mentioned preparation method reduces pollution to the environment. At the same time, the preparation method of the polymer remover is simple and easy to operate, and does not require complicated equipment and processes. At the same time, since the remover has a high adsorption capacity and regeneration performance, the processing cost is relatively low. In addition, the storage and transportation of the remover are also relatively convenient, which reduces the overall operating cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 The present invention is a preparation flow chart of a polymer remover for removing harmful ions in sewage and a preparation method thereof. DETAILED DESCRIPTION

[0028] The following will be combined with the embodiments of the present invention and the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Embodiment 1:

[0030] See also Figure 1 In this embodiment, a polymer remover for removing harmful ions in sewage includes the following raw materials in proportions by weight:

[0031] 20 parts of polyaluminium chloride, 10 parts of polyferric sulfate, 80 parts of polyacrylamide, 80 parts of chitosan, 1.5 parts of hydrochloric acid, 3 parts of sulfuric acid, 1.6 parts of sodium hydroxide, 1 part of cross-linking agent, 0.2 parts of stabilizer, and the balance of water.

[0032] Specifically, the crosslinking agent is any one of an organic peroxide or a multifunctional compound or a mixture of the two.

[0033] Specifically, the stabilizer is any one of a heat stabilizer, a light stabilizer or an antioxidant.

[0034] In this embodiment, a polymer remover prepared by using polyaluminium chloride, polyferric sulfate, polyacrylamide, chitosan, hydrochloric acid, sulfuric acid, sodium hydroxide, a crosslinking agent and a stabilizer achieves efficient and selective adsorption of target ions, significantly reduces the concentration of harmful ions in sewage, and reduces environmental pollution. At the same time, the remover can restore its adsorption capacity through a simple regeneration treatment after use, thereby achieving the recycling of resources and reducing processing costs and environmental burdens.

[0035] A method for preparing a polymer remover for removing harmful ions in sewage in this embodiment includes the following preparation steps:

[0036] S1. Raw material preparation: 20 parts of polyaluminium chloride, 10 parts of polyferric sulfate, 80 parts of polyacrylamide, 80 parts of chitosan, 1.5 parts of hydrochloric acid, 3 parts of sulfuric acid, 1.6 parts of sodium hydroxide, 1 part of cross-linking agent, 0.2 parts of stabilizer, and the rest of water are taken and weighed respectively, and then used for later use;

[0037] S2, prepare polyaluminium chloride solution: take an appropriate amount of polyaluminium chloride, add it to twice its weight of water, stir evenly, raise the temperature to 55-60°C, keep stirring for 10-20 minutes to fully dissolve the polyaluminium chloride, add a small amount of hydrochloric acid and sulfuric acid, continue stirring to room temperature, and obtain a polyaluminium chloride solution;

[0038] S3, prepare polyferric sulfate solution: take an appropriate amount of polyferric sulfate, add it to twice its weight of water, stir evenly, raise the temperature to 55-60 ° C, keep stirring for 10-20 minutes to fully dissolve the polyferric sulfate, add a small amount of sulfuric acid and sodium hydroxide as a regulator, continue stirring to room temperature, and obtain a polyferric sulfate solution;

[0039] S4. Prepare polyacrylamide solution: Take an appropriate amount of polyacrylamide, add it to twice its weight of water, stir evenly, raise the temperature to 55-60°C, keep stirring for 10-20 minutes to fully dissolve the polyacrylamide, add a small amount of crosslinking agent and stabilizer, continue stirring until the temperature reaches room temperature, and obtain a polyacrylamide solution.

[0040] S5. Prepare chitosan solution: Take an appropriate amount of chitosan, add it to twice its weight of water, stir evenly, raise the temperature to 55-60°C, keep stirring for 10-20 minutes to fully dissolve the chitosan, add a small amount of hydrochloric acid and sulfuric acid as regulators, continue stirring until the temperature reaches room temperature, and obtain a chitosan solution.

[0041] S6, polymerization reaction; take the polyaluminium chloride solution in S2, the polyferric sulfate solution in S3, the polyacrylamide solution in S4 and the chitosan solution in S5, send the above solutions into the reaction kettle and mix them evenly, so that the above solutions are mixed to undergo a polymerization reaction, and after the polymerization reaction is completed, a polymer remover solution is obtained;

[0042] S7, subsequent treatment: take the polymer remover solution in S6, and perform ultrasonic treatment for 10-20 minutes to fully disperse it; after the dispersion is completed, increase the temperature to 60-65°C, keep it warm and stir for 12 hours to obtain a polymer remover reaction solution; after the stirring is completed, filter the polymer remover reaction solution, wash the precipitate with water, dry it under vacuum conditions, and after the vacuum treatment is completed, cool it to room temperature to obtain the polymer remover.

[0043] Specifically, during the polymerization reaction in S6, the temperature of the reactor is 55-60° C., and the mixing time in the reactor is 4-5 hours.

[0044] Specifically, the temperature of the vacuum condition in S7 is 60-65° C., and the drying treatment time is 12 hours.

[0045] In this embodiment, the polymer remover prepared by the above-mentioned preparation method reduces pollution to the environment. At the same time, the preparation method of the polymer remover is simple and easy to operate, and does not require complicated equipment and processes. At the same time, since the remover has a high adsorption capacity and regeneration performance, the processing cost is relatively low. In addition, the storage and transportation of the remover are also relatively convenient, which reduces the overall operating cost.

[0046] Embodiment 2:

[0047] See also Figure 1 In this embodiment, a polymer remover for removing harmful ions in sewage includes the following raw materials in proportions by weight:

[0048] 25 parts of polyaluminium chloride, 12 parts of polyferric sulfate, 90 parts of polyacrylamide, 90 parts of chitosan, 2 parts of hydrochloric acid, 4 parts of sulfuric acid, 1.8 parts of sodium hydroxide, 1.5 parts of crosslinking agent, 0.3 parts of stabilizer, and the balance of water.

[0049] Specifically, the crosslinking agent is any one of an organic peroxide or a multifunctional compound or a mixture of the two.

[0050] Specifically, the stabilizer is any one of a heat stabilizer, a light stabilizer or an antioxidant.

[0051] In this embodiment, a polymer remover prepared by using polyaluminium chloride, polyferric sulfate, polyacrylamide, chitosan, hydrochloric acid, sulfuric acid, sodium hydroxide, a crosslinking agent and a stabilizer achieves efficient and selective adsorption of target ions, significantly reduces the concentration of harmful ions in sewage, and reduces environmental pollution. At the same time, the remover can restore its adsorption capacity through a simple regeneration treatment after use, thereby achieving the recycling of resources and reducing processing costs and environmental burdens.

[0052] A method for preparing a polymer remover for removing harmful ions in sewage in this embodiment includes the following preparation steps:

[0053] S1. Raw material preparation: 25 parts of polyaluminium chloride, 12 parts of polyferric sulfate, 90 parts of polyacrylamide, 90 parts of chitosan, 2 parts of hydrochloric acid, 4 parts of sulfuric acid, 1.8 parts of sodium hydroxide, 1.5 parts of cross-linking agent, 0.3 parts of stabilizer, and the rest of water are taken and weighed respectively, and then used for later use;

[0054] S2, prepare polyaluminium chloride solution: take an appropriate amount of polyaluminium chloride, add it to twice its weight of water, stir evenly, raise the temperature to 55-60°C, keep stirring for 10-20 minutes to fully dissolve the polyaluminium chloride, add a small amount of hydrochloric acid and sulfuric acid, continue stirring to room temperature, and obtain a polyaluminium chloride solution;

[0055] S3, prepare polyferric sulfate solution: take an appropriate amount of polyferric sulfate, add it to twice its weight of water, stir evenly, raise the temperature to 55-60 ° C, keep stirring for 10-20 minutes to fully dissolve the polyferric sulfate, add a small amount of sulfuric acid and sodium hydroxide as a regulator, continue stirring to room temperature, and obtain a polyferric sulfate solution;

[0056] S4. Prepare polyacrylamide solution: Take an appropriate amount of polyacrylamide, add it to twice its weight of water, stir evenly, raise the temperature to 55-60°C, keep stirring for 10-20 minutes to fully dissolve the polyacrylamide, add a small amount of crosslinking agent and stabilizer, continue stirring until the temperature reaches room temperature, and obtain a polyacrylamide solution.

[0057] S5. Prepare chitosan solution: Take an appropriate amount of chitosan, add it to twice its weight of water, stir evenly, raise the temperature to 55-60°C, keep stirring for 10-20 minutes to fully dissolve the chitosan, add a small amount of hydrochloric acid and sulfuric acid as regulators, continue stirring until the temperature reaches room temperature, and obtain a chitosan solution.

[0058] S6, polymerization reaction; take the polyaluminium chloride solution in S2, the polyferric sulfate solution in S3, the polyacrylamide solution in S4 and the chitosan solution in S5, send the above solutions into the reaction kettle and mix them evenly, so that the above solutions are mixed to undergo a polymerization reaction, and after the polymerization reaction is completed, a polymer remover solution is obtained;

[0059] S7, subsequent treatment: take the polymer remover solution in S6, and perform ultrasonic treatment for 10-20 minutes to fully disperse it; after the dispersion is completed, increase the temperature to 60-65°C, keep it warm and stir for 12 hours to obtain a polymer remover reaction solution; after the stirring is completed, filter the polymer remover reaction solution, wash the precipitate with water, dry it under vacuum conditions, and after the vacuum treatment is completed, cool it to room temperature to obtain the polymer remover.

[0060] Specifically, during the polymerization reaction in S6, the temperature of the reactor is 55-60° C., and the mixing time in the reactor is 4-5 hours.

[0061] Specifically, the temperature of the vacuum condition in S7 is 60-65° C., and the drying treatment time is 12 hours.

[0062] In this embodiment, the polymer remover prepared by the above-mentioned preparation method reduces pollution to the environment. At the same time, the preparation method of the polymer remover is simple and easy to operate, and does not require complicated equipment and processes. At the same time, since the remover has a high adsorption capacity and regeneration performance, the processing cost is relatively low. In addition, the storage and transportation of the remover are also relatively convenient, which reduces the overall operating cost.

[0063] Embodiment three:

[0064] See also Figure 1 In this embodiment, a polymer remover for removing harmful ions in sewage includes the following raw materials in proportions by weight:

[0065] 30 parts of polyaluminium chloride, 15 parts of polyferric sulfate, 100 parts of polyacrylamide, 100 parts of chitosan, 3 parts of hydrochloric acid, 6 parts of sulfuric acid, 2 parts of sodium hydroxide, 2 parts of cross-linking agent, 0.5 parts of stabilizer, and the balance of water.

[0066] Specifically, the crosslinking agent is any one of an organic peroxide or a multifunctional compound or a mixture of the two.

[0067] Specifically, the stabilizer is any one of a heat stabilizer, a light stabilizer or an antioxidant.

[0068] In this embodiment, a polymer remover prepared by using polyaluminium chloride, polyferric sulfate, polyacrylamide, chitosan, hydrochloric acid, sulfuric acid, sodium hydroxide, a crosslinking agent and a stabilizer achieves efficient and selective adsorption of target ions, significantly reduces the concentration of harmful ions in sewage, and reduces environmental pollution. At the same time, the remover can restore its adsorption capacity through a simple regeneration treatment after use, thereby achieving the recycling of resources and reducing processing costs and environmental burdens.

[0069] A method for preparing a polymer remover for removing harmful ions in sewage in this embodiment includes the following preparation steps:

[0070] S1. Raw material preparation: 30 parts of polyaluminium chloride, 15 parts of polyferric sulfate, 100 parts of polyacrylamide, 100 parts of chitosan, 3 parts of hydrochloric acid, 6 parts of sulfuric acid, 2 parts of sodium hydroxide, 2 parts of cross-linking agent, 0.5 parts of stabilizer, and the rest of water are taken and weighed respectively, and then used for later use;

[0071] S2, prepare polyaluminium chloride solution: take an appropriate amount of polyaluminium chloride, add it to twice its weight of water, stir evenly, raise the temperature to 55-60°C, keep stirring for 10-20 minutes to fully dissolve the polyaluminium chloride, add a small amount of hydrochloric acid and sulfuric acid, continue stirring to room temperature, and obtain a polyaluminium chloride solution;

[0072] S3, prepare polyferric sulfate solution: take an appropriate amount of polyferric sulfate, add it to twice its weight of water, stir evenly, raise the temperature to 55-60 ° C, keep stirring for 10-20 minutes to fully dissolve the polyferric sulfate, add a small amount of sulfuric acid and sodium hydroxide as a regulator, continue stirring to room temperature, and obtain a polyferric sulfate solution;

[0073] S4. Prepare polyacrylamide solution: Take an appropriate amount of polyacrylamide, add it to twice its weight of water, stir evenly, raise the temperature to 55-60°C, keep stirring for 10-20 minutes to fully dissolve the polyacrylamide, add a small amount of crosslinking agent and stabilizer, continue stirring until the temperature reaches room temperature, and obtain a polyacrylamide solution.

[0074] S5. Prepare chitosan solution: Take an appropriate amount of chitosan, add it to twice its weight of water, stir evenly, raise the temperature to 55-60°C, keep stirring for 10-20 minutes to fully dissolve the chitosan, add a small amount of hydrochloric acid and sulfuric acid as regulators, continue stirring until the temperature reaches room temperature, and obtain a chitosan solution.

[0075] S6, polymerization reaction; take the polyaluminium chloride solution in S2, the polyferric sulfate solution in S3, the polyacrylamide solution in S4 and the chitosan solution in S5, send the above solutions into the reaction kettle and mix them evenly, so that the above solutions are mixed to undergo a polymerization reaction, and after the polymerization reaction is completed, a polymer remover solution is obtained;

[0076] S7, subsequent treatment: take the polymer remover solution in S6, and perform ultrasonic treatment for 10-20 minutes to fully disperse it; after the dispersion is completed, increase the temperature to 60-65°C, keep it warm and stir for 12 hours to obtain a polymer remover reaction solution; after the stirring is completed, filter the polymer remover reaction solution, wash the precipitate with water, dry it under vacuum conditions, and after the vacuum treatment is completed, cool it to room temperature to obtain the polymer remover.

[0077] Specifically, during the polymerization reaction in S6, the temperature of the reactor is 55-60° C., and the mixing time in the reactor is 4-5 hours.

[0078] Specifically, the temperature of the vacuum condition in S7 is 60-65° C., and the drying treatment time is 12 hours.

[0079] In this embodiment, the polymer remover prepared by the above-mentioned preparation method reduces pollution to the environment. At the same time, the preparation method of the polymer remover is simple and easy to operate, and does not require complicated equipment and processes. At the same time, since the remover has a high adsorption capacity and regeneration performance, the processing cost is relatively low. In addition, the storage and transportation of the remover are also relatively convenient, which reduces the overall operating cost.

[0080] The beneficial effects of the present invention are:

[0081] The polymer remover for removing harmful ions in sewage and the preparation method thereof, by adopting polyaluminium chloride, polyferric sulfate, polyacrylamide, chitosan, hydrochloric acid, sulfuric acid, sodium hydroxide, a crosslinking agent and a stabilizer to prepare the polymer remover, achieves efficient and selective adsorption of target ions, significantly reduces the concentration of harmful ions in sewage, and meets or exceeds the existing national and local emission standards; the polymer remover adopts environmentally friendly raw materials, reduces pollution to the environment, and at the same time, the remover can restore its adsorption capacity through simple regeneration treatment after use, achieves the recycling of resources, and reduces the treatment cost and environmental burden; in addition, the remover itself will not release toxic and harmful substances during the biodegradation process, and is friendly to the ecological environment.

[0082] The polymer remover and preparation method for removing harmful ions in sewage reduce pollution to the environment by adopting the polymer remover prepared by the above preparation method. At the same time, the preparation method of the polymer remover is simple and easy to operate, and does not require complicated equipment and processes. At the same time, since the remover has a high adsorption capacity and regeneration performance, the processing cost is relatively low. In addition, the storage and transportation of the remover are also relatively convenient, which reduces the overall operating cost.

[0083] The specific embodiments provided in the present invention are for clearer explanation. The relevant technical personnel may make reasonable modifications to the corresponding steps in the specific operation process according to the experimental conditions. The materials, reagents, etc. used can be obtained from commercial channels unless otherwise specified.

[0084] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A polymer remover for removing harmful ions in sewage, characterized in that: The invention comprises the following raw materials in proportion by weight: 20-30 parts of polyaluminium chloride, 10-15 parts of polyferric sulfate, 80-100 parts of polyacrylamide, 80-100 parts of chitosan, 1.5-3 parts of hydrochloric acid, 3-6 parts of sulfuric acid, 1.6-2 parts of sodium hydroxide, 1-2 parts of crosslinking agent, 0.2-0.5 parts of stabilizer, and the balance of water.

2. A polymer remover for removing harmful ions in sewage according to claim 1, characterized in that: The cross-linking agent is any one of an organic peroxide or a multifunctional compound or a mixture of the two.

3. A polymer remover for removing harmful ions in sewage according to claim 1, characterized in that: The stabilizer is any one of a heat stabilizer, a light stabilizer or an antioxidant.

4. A polymer remover for removing harmful ions in sewage according to claim 1, characterized in that: The invention comprises the following raw materials in proportion by weight: 20 parts of polyaluminium chloride, 10 parts of polyferric sulfate, 80 parts of polyacrylamide, 80 parts of chitosan, 1.5 parts of hydrochloric acid, 3 parts of sulfuric acid, 1.6 parts of sodium hydroxide, 1 part of cross-linking agent, 0.2 parts of stabilizer and the balance of water.

5. A polymer remover for removing harmful ions in sewage according to claim 1, characterized in that: The invention comprises the following raw materials in proportion by weight: 25 parts of polyaluminium chloride, 12 parts of polyferric sulfate, 90 parts of polyacrylamide, 90 parts of chitosan, 2 parts of hydrochloric acid, 4 parts of sulfuric acid, 1.8 parts of sodium hydroxide, 1.5 parts of a crosslinking agent, 0.3 parts of a stabilizer and the balance of water.

6. A polymer remover for removing harmful ions in sewage according to claim 1, characterized in that: The invention comprises the following raw materials in proportion by weight: 30 parts of polyaluminium chloride, 15 parts of polyferric sulfate, 100 parts of polyacrylamide, 100 parts of chitosan, 3 parts of hydrochloric acid, 6 parts of sulfuric acid, 2 parts of sodium hydroxide, 2 parts of crosslinking agent, 0.5 parts of stabilizer and the balance of water.

7. A method for preparing a polymer remover for removing harmful ions in sewage, using the polymer remover for removing harmful ions in sewage as claimed in claim 1, characterized in that: The method comprises the following preparation steps: S1. Raw material preparation: respectively take and weigh polyaluminium chloride, polyferric sulfate, polyacrylamide, chitosan, hydrochloric acid, sulfuric acid, sodium hydroxide, crosslinking agent, stabilizer and water, and set aside after weighing; S2, prepare polyaluminium chloride solution: take an appropriate amount of polyaluminium chloride, add it to twice its weight of water, stir evenly, raise the temperature to 55-60°C, keep stirring for 10-20 minutes to fully dissolve the polyaluminium chloride, add a small amount of hydrochloric acid and sulfuric acid, continue stirring to room temperature, and obtain a polyaluminium chloride solution; S3, prepare polyferric sulfate solution: take an appropriate amount of polyferric sulfate, add it to twice its weight of water, stir evenly, raise the temperature to 55-60 ° C, keep stirring for 10-20 minutes to fully dissolve the polyferric sulfate, add a small amount of sulfuric acid and sodium hydroxide as a regulator, continue stirring to room temperature, and obtain a polyferric sulfate solution; S4. Prepare polyacrylamide solution: Take an appropriate amount of polyacrylamide, add it to twice its weight of water, stir evenly, raise the temperature to 55-60°C, keep stirring for 10-20 minutes to fully dissolve the polyacrylamide, add a small amount of crosslinking agent and stabilizer, continue stirring until the temperature reaches room temperature, and obtain a polyacrylamide solution. S5. Prepare chitosan solution: Take an appropriate amount of chitosan, add it to twice its weight of water, stir evenly, raise the temperature to 55-60°C, keep stirring for 10-20 minutes to fully dissolve the chitosan, add a small amount of hydrochloric acid and sulfuric acid as regulators, continue stirring until the temperature reaches room temperature, and obtain a chitosan solution. S6, polymerization reaction; take the polyaluminium chloride solution in S2, the polyferric sulfate solution in S3, the polyacrylamide solution in S4 and the chitosan solution in S5, send the above solutions into the reaction kettle and mix them evenly, so that the above solutions are mixed to undergo a polymerization reaction, and after the polymerization reaction is completed, a polymer remover solution is obtained; S7, subsequent treatment: take the polymer remover solution in S6, and perform ultrasonic treatment for 10-20 minutes to fully disperse it; after the dispersion is completed, increase the temperature to 60-65°C, keep it warm and stir for 12 hours to obtain a polymer remover reaction solution; after the stirring is completed, filter the polymer remover reaction solution, wash the precipitate with water, dry it under vacuum conditions, and after the vacuum treatment is completed, cool it to room temperature to obtain the polymer remover.

8. The method for preparing a polymer remover for removing harmful ions in sewage according to claim 7, characterized in that: During the polymerization reaction in S6, the temperature of the reactor is 55-60° C., and the mixing time in the reactor is 4-5 hours.

9. The method for preparing a polymer remover for removing harmful ions in sewage according to claim 7, characterized in that: The temperature of the vacuum condition in S7 is 60-65° C., and the drying time is 12 hours.

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