Preparation method of wastewater biochemical treatment accelerator with sepiolite as carrier

Abstract

The application provides a preparation method of a wastewater biochemical treatment accelerator with sepiolite as a carrier, sepiolite powder is prepared, sepiolite powder with 150-200 meshes and acidification activation is selected to ensure that the sepiolite powder has good pore structure and surface activity; manganese dioxide powder is added, 200 mesh manganese dioxide powder is added into the sepiolite powder, and the two are fully mixed to enhance the trace element adsorption capacity of the sepiolite and promote the formation of free ammonia; a metal salt solution is added, and ferrous sulfate, zinc sulfate, copper sulfate, nickel sulfate, potassium iodide, sodium molybdate, cobalt sulfate, sodium selenite and potassium fluoride are sequentially added to react, and the proportion of each component is ensured to be within a specified range. The product has excellent adsorption performance and long-acting slow-release characteristics, can significantly improve the growth environment of microorganisms, enhance the impact resistance and stability of the system, and is especially suitable for wastewater treatment scenes containing trace heavy metal pollutants or trace toxic substances, such as livestock and poultry breeding wastewater.

Description

Technical Field

[0001] This invention relates to the field of water treatment technology, and in particular to a method for preparing a wastewater biochemical treatment accelerator using sepiolite as a carrier. Background Technology

[0002] With the acceleration of industrial development and urbanization, water pollution has become increasingly serious, placing higher demands on wastewater treatment technologies. While traditional methods such as chemical precipitation and biological treatment can purify water to some extent, they suffer from low removal efficiency, high operating costs, and secondary pollution. In water treatment, trace elements are crucial for the growth and metabolism of microorganisms in the water. Current technologies typically rely on chemical additives to provide trace elements, but these methods are costly, have short-lasting effects, and cause secondary pollution. Therefore, developing a water treatment accelerator with long-term slow-release capabilities for trace elements and the ability to improve the stability of water treatment systems is of great significance.

[0003] In recent years, research on using natural mineral materials as carriers to adsorb heavy metal ions and other harmful substances has gradually increased. Among them, sepiolite, due to its unique physicochemical properties such as porous structure, large specific surface area, and good cation exchange capacity, has become one of the research hotspots. Sepiolite possesses excellent adsorption capacity due to its porous structure and large specific surface area. After acidification and activation treatment, sepiolite can enhance its adsorption capacity for trace elements, thereby playing a role in promoting microbial growth and system stability in water treatment. However, the efficiency of using sepiolite alone for water treatment still needs to be improved. Therefore, how to further optimize the application effect of sepiolite and develop a highly efficient composite water treatment promoter has become an urgent problem to be solved. Summary of the Invention

[0004] This invention provides a method for preparing a wastewater biochemical treatment promoter using sepiolite as a carrier, in order to overcome the deficiencies in the prior art.

[0005] This invention provides a method for preparing a wastewater biochemical treatment promoter using sepiolite as a carrier, comprising: preparing sepiolite powder, selecting 150-200 mesh sepiolite powder that has been acid-activated to ensure that it has good pore structure and surface activity;

[0006] Add manganese dioxide powder: Add 200-mesh manganese dioxide powder to sepiolite powder and mix them thoroughly to enhance the trace element adsorption capacity of sepiolite and promote the formation of free ammonia.

[0007] Add a metal salt solution, and then add ferrous sulfate, zinc sulfate, copper sulfate, nickel sulfate, potassium iodide, sodium molybdate, cobalt sulfate, sodium selenite, potassium fluoride and other metal salts in sequence to react, ensuring that the proportion of each component is within the specified range, so as to enhance the supply of trace elements.

[0008] According to the present invention, a method for preparing a wastewater biochemical treatment promoter using sepiolite as a carrier is provided, wherein the specific proportions of ferrous sulfate, zinc sulfate, copper sulfate, nickel sulfate, potassium iodide, sodium molybdate, cobalt sulfate, sodium selenite, and potassium fluoride are as follows:

[0009] Ferrous sulfate: 200-300 parts

[0010] Zinc sulfate: 150-250 parts

[0011] Copper sulfate: 100-150 parts

[0012] Nickel sulfate: 50-100 parts

[0013] Potassium iodide: 30-50 parts

[0014] Sodium molybdate: 20-30 parts

[0015] Cobalt sulfate: 10-20 parts

[0016] Sodium selenite: 3-5 parts

[0017] Potassium fluoride: 2-3 parts.

[0018] According to the present invention, a method for preparing a wastewater biochemical treatment promoter using sepiolite as a carrier is provided. After adding a metal salt solution, stirring and reaction are carried out. The mixture is placed in a reaction vessel and stirred for 4 hours to ensure that all components react fully.

[0019] According to the present invention, a method for preparing a wastewater biochemical treatment promoter using sepiolite as a carrier is provided. After the reaction is completed, the mixture is subjected to a secondary activation treatment with steam to further increase the hydrophilicity of its surface and promote the stability of trace elements.

[0020] According to the present invention, a method for preparing a wastewater biochemical treatment accelerator using sepiolite as a carrier is provided, wherein after activation treatment, a drying treatment is performed to remove excess water, thereby obtaining the final water treatment accelerator product.

[0021] According to the present invention, a method for preparing a wastewater biochemical treatment accelerator using sepiolite as a carrier is provided. The accelerator is used in wastewater treatment, especially in the treatment of wastewater containing trace amounts of heavy metal pollutants or trace amounts of toxic substances. The accelerator is added as powder to the influent tank, mixed with the wastewater, and then pumped or gravity-fed into the anaerobic tank / reservoir.

[0022] According to the present invention, a method for preparing a wastewater biochemical treatment promoter using sepiolite as a carrier is provided, wherein the proportion of 150-200 mesh acid-activated sepiolite component added is 5000-10000 parts.

[0023] According to the present invention, a method for preparing a wastewater biochemical treatment promoter using sepiolite as a carrier is provided, wherein the proportion of 200-mesh manganese dioxide powder added is 500-1000 parts.

[0024] This invention provides a method for preparing a water treatment accelerator using sepiolite as a carrier. The accelerator mainly consists of 150-200 mesh acid-activated sepiolite powder, supplemented with appropriate amounts of manganese dioxide powder and other trace elements (such as ferrous sulfate, zinc sulfate, copper sulfate, nickel sulfate, potassium iodide, sodium molybdate, cobalt sulfate, sodium selenite, and potassium fluoride). Through reasonable formulation design and process control, the product is fully mixed in a reaction vessel to obtain the final product. This product exhibits excellent adsorption performance and long-lasting sustained-release characteristics, significantly improving the microbial growth environment and enhancing the system's shock resistance and stability. It is particularly suitable for wastewater treatment scenarios containing trace amounts of heavy metal pollutants or trace amounts of toxic substances. The obtained accelerator has the following beneficial effects:

[0025] Improving the living environment of microorganisms: The porous structure of sepiolite itself gives it a huge specific surface area, which not only helps it to adsorb a large number of trace elements, but also allows these elements to be slowly released during subsequent applications, maintaining an effective supply for a long time and providing ideal living conditions for microorganisms.

[0026] Enhanced ammonia nitrogen removal capacity: The presence of manganese dioxide helps promote the formation of free ammonia, which is crucial for the activity of ammonia-oxidizing bacteria in anaerobic environments, and can also indirectly support the adsorption function of sepiolite for micronutrients.

[0027] Enhancing system stability: Even in the face of sudden heavy metal pollution incidents, sepiolite can quickly capture these harmful substances with its strong adsorption capacity, reducing their harm to the microbial community in the ecosystem, thereby improving the overall treatment system's resilience and the possibility of long-term stable operation. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown herein can generally be arranged and designed in various different configurations.

[0029] Therefore, the detailed description of the embodiments of the present invention is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0030] It should be noted that the terms "first," "second," etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0031] In the description of the embodiments of the present invention, it should be noted that the terms "inner", "outer", "upper", etc., indicating the orientation or positional relationship, or the orientation or positional relationship in which the product of the invention is usually placed when in use, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0032] This application provides a novel water treatment accelerator and its preparation method. The accelerator mainly consists of 150-200 mesh acid-activated sepiolite powder, supplemented with appropriate amounts of manganese dioxide powder and other trace elements (such as ferrous sulfate, zinc sulfate, copper sulfate, nickel sulfate, potassium iodide, sodium molybdate, cobalt sulfate, sodium selenite, and potassium fluoride). Through reasonable formulation design and process control, the product is fully mixed in a reaction vessel to obtain the final product. This product exhibits excellent adsorption performance and long-lasting slow-release characteristics, significantly improving the microbial growth environment and enhancing the system's shock resistance and stability. It is particularly suitable for wastewater treatment scenarios containing heavy metal pollution.

[0033] Composition and Proportion: The water treatment accelerator comprises the following components in parts by weight:

[0034] 5000-10000 parts of 150-200 mesh acid-activated sepiolite powder.

[0035] 500-1000 parts of 200-mesh manganese dioxide powder

[0036] Ferrous sulfate: 200-300 parts

[0037] Zinc sulfate: 150-250 parts

[0038] Copper sulfate: 100-150 parts

[0039] Nickel sulfate: 50-100 parts

[0040] Potassium iodide: 30-50 parts

[0041] Sodium molybdate: 20-30 parts

[0042] Cobalt sulfate: 10-20 parts

[0043] Sodium selenite: 3-5 parts

[0044] Potassium fluoride: 2-3 parts

[0045] Preparation method: The preparation method provided by this invention includes the following steps:

[0046] Step 1: Prepare the raw materials

[0047] Select raw materials that meet the above specifications and ensure their purity meets the corresponding standards. In particular, sepiolite powder should be acidified first to enhance its surface activity and thus better exert its adsorption effect.

[0048] Step 2: Preliminary mixing

[0049] Add a measured amount of sepiolite powder to the mixing container, followed by an appropriate amount of manganese dioxide powder, ensuring that the two materials are evenly dispersed. During this process, the rotation speed and time can be adjusted as needed to ensure sufficient contact between the materials.

[0050] Step 3: Prepare the solution

[0051] Prepare aqueous solutions of all other trace elements according to the predetermined ratio, and slowly pour them into the premixed solid matrix. Carefully control the addition rate to avoid excessively high local concentrations that could affect the final product quality.

[0052] Step 4: Reaction Process

[0053] Transfer the mixture to a sealed reactor and stir continuously for approximately 4 hours under controlled temperature conditions (e.g., around 60°C). During this time, the reaction progress can be assessed by monitoring pH changes, and the conditions can be fine-tuned as needed to achieve optimal results.

[0054] Step 5: Secondary activation and drying

[0055] After the above reaction is completed, the steam heating system is turned on to carry out a second activation treatment on the product. Then, the excess moisture is removed by natural air drying or low-temperature drying until the moisture content is lower than a certain set threshold.

[0056] Example 1

[0057] Preparation of water treatment accelerator under standard formulation

[0058] Raw material preparation

[0059] Select sepiolite powder with a mesh size of 150-200, ensuring it has undergone acid-activated treatment. Use 7500 parts by weight.

[0060] Prepare 200-mesh manganese dioxide powder, and take 750 parts by weight.

[0061] Weigh out 250 parts by weight of ferrous sulfate, 200 parts by weight of zinc sulfate, 125 parts by weight of copper sulfate, 75 parts by weight of nickel sulfate, 40 parts by weight of potassium iodide, 25 parts by weight of sodium molybdate, 15 parts by weight of cobalt sulfate, 4 parts by weight of sodium selenite, and 2.5 parts by weight of potassium fluoride.

[0062] For initial mixing, add sepiolite powder to the mixing container, turn on the mixer and gradually add manganese dioxide powder, adjust the speed to 30 rpm, and continue mixing for 30 minutes to ensure uniform dispersion.

[0063] Prepare solutions by dissolving the trace elements in aqueous solutions according to predetermined proportions. For example, dissolve each of the trace elements mentioned above in an appropriate amount of distilled water (the specific amount depends on the solubility), and then slowly pour the solution into the premixed solid matrix, controlling the addition rate at 50 ml per minute while stirring to prevent excessively high local concentrations.

[0064] During the reaction, the mixture was transferred to a sealed reactor and stirred continuously at 60°C for 4 hours. The pH was monitored throughout the process, with the initial pH set at approximately 6.0. If necessary, diluted acid or alkali could be used to fine-tune the pH to maintain stability.

[0065] After the above reactions are completed, the product undergoes a secondary activation and drying process using a steam heating system for 1 hour at a temperature controlled at 80°C. Subsequently, a low-temperature drying method is used to remove excess moisture until the moisture content is below 5%.

[0066] Example 2

[0067] Preparation of water treatment accelerators with optimized formulation

[0068] This embodiment is similar to Embodiment 1, but the proportions of some components have been adjusted to explore better performance.

[0069] Take 9000 parts by weight of sepiolite powder.

[0070] Take 800 parts by weight of manganese dioxide powder.

[0071] The mass fractions of other trace elements are as follows: 280 parts ferrous sulfate, 230 parts zinc sulfate, 130 parts copper sulfate, 80 parts nickel sulfate, 45 parts potassium iodide, 28 parts sodium molybdate, 18 parts cobalt sulfate, 4 parts sodium selenite, and 3 parts potassium fluoride.

[0072] The same steps as in Example 1 were followed for raw material preparation, preliminary mixing, solution preparation, reaction process, secondary activation, and drying. The only difference was that, due to the increased proportion of certain components, it might be necessary to appropriately extend the reaction time and adjust the pH monitoring strategy to ensure optimal results.

[0073] For each step in each of the above embodiments, environmental conditions (such as temperature and humidity) and process parameters (such as stirring rate and liquid addition rate) should be strictly controlled to ensure consistent quality and performance of the final product. Furthermore, detailed experimental data should be recorded after each experiment, including but not limited to changes in time, temperature, and pH at each stage, to facilitate subsequent analysis and optimization of the formulation design.

[0074] Performance testing:

[0075] Adsorption performance test: The adsorption capacity of this water treatment accelerator for wastewater containing heavy metals (such as lead, cadmium, chromium, etc.) was measured through experimental testing. The test results show that the accelerator has a significant adsorption effect on heavy metal ions, and the adsorption efficiency remains stable during use.

[0076] Slow-release performance test: A dissolution test was used to test the ability of the accelerator to slowly release trace elements in water. The experiment showed that the accelerator can slowly release trace elements, continuously improve the microbial growth environment, and enhance the stability and shock resistance of the wastewater treatment system.

[0077] Treatment of wastewater containing trace heavy metals: The prepared water treatment accelerator was applied to a livestock and poultry breeding wastewater treatment plant to treat wastewater containing zinc, arsenic, and copper. After treatment, the concentration of heavy metals in the wastewater was significantly reduced, the removal rates of anaerobic and aerobic pollutants were significantly improved, and the system's shock resistance and stability were significantly enhanced.

[0078] Implementation results:

[0079] This water treatment accelerator not only effectively removes heavy metal pollution from wastewater but also improves the system's biodegradation efficiency, adapts to complex and changing water quality conditions, and has long-lasting slow-release properties, significantly improving the growth environment for microorganisms and enhancing treatment efficiency. The product's preparation process is simple and economical, making it suitable for large-scale applications.

[0080] Optimization of large-scale production

[0081] To improve production efficiency and reduce costs, the following aspects can be further optimized in large-scale production:

[0082] Selection and optimization of reaction vessels

[0083] Reactor selection: Choose a reactor of appropriate capacity that is corrosion-resistant and high-temperature resistant to ensure it can handle large quantities of raw materials and adapt to long-term, high-temperature reactions. Stainless steel or other corrosion-resistant materials are recommended, and the lining should have good acid and alkali resistance.

[0084] Temperature control and stirring system optimization: Equipped with a high-efficiency temperature control system, it can automatically adjust the reaction temperature to ensure the reaction is within a suitable temperature range (e.g., 60℃). The stirring system should use an adjustable-speed, high-efficiency stirring device to ensure uniform mixing of materials and avoid sedimentation or excessively high local concentrations. It is recommended to use a spiral stirrer on the inner wall of the reactor, which can effectively promote material mixing.

[0085] Pressure and atmosphere control: If necessary, the reaction environment can be controlled by applying a slight amount of inert gas (such as nitrogen) to avoid oxidation or decomposition of certain components.

[0086] Optimization of secondary activation treatment

[0087] Multi-stage hot air circulation system: A multi-stage hot air circulation drying system is recommended for the second activation process. This system utilizes circulating hot air to improve drying efficiency and ensure uniform heating of the material. It accelerates moisture evaporation and makes the drying process more uniform.

[0088] Low-temperature drying technology: In order to avoid the loss or decomposition of certain trace elements caused by high temperature, low-temperature drying (temperature controlled between 40℃ and 50℃) can be used to gradually remove moisture and ensure the stability of the final product's composition.

[0089] Humidity control: Special attention should be paid to humidity monitoring during the drying process. Introducing a humidity sensor can be considered to monitor and adjust the airflow in real time, ensuring that the material does not absorb moisture or become over-dried during the drying process.

[0090] Quality control and production process monitoring

[0091] Raw material quality control: The source of all raw materials should be strictly verified to ensure that their purity and composition meet the standards. In particular, for sepiolite powder, it is necessary to confirm whether its acidification treatment has achieved the expected results. Random sampling inspection of raw materials can be carried out before production to ensure their performance consistency.

[0092] Ingredient and mixing process optimization: When adding each component (such as manganese dioxide powder, ferrous sulfate, etc.), it is essential to ensure precise dosage. To avoid uneven dispersion or agglomeration of manganese dioxide powder, ultrasonic-assisted dispersion technology can be considered to enable the powder to be more evenly distributed in the sepiolite powder, thereby improving the overall activity of the product.

[0093] Real-time reaction monitoring and data recording: During the reaction process, devices such as temperature sensors and pH meters can be used for real-time monitoring to ensure the reaction is under ideal conditions and to allow for timely parameter adjustments. Furthermore, it is recommended to record data for each production batch for subsequent traceability and quality management.

[0094] Improve reaction conditions

[0095] Solution addition method: During solution preparation, it is recommended to add the ingredients gradually and stir slowly to avoid the solution becoming too concentrated or local precipitation. Simultaneously, adjusting the pH of the solution can ensure the effectiveness of each substance in the reaction and prevent the reaction from being too rapid or incomplete.

[0096] Environmental impact and production efficiency

[0097] Green production concept: In the production process, consideration can be given to reducing the use of environmentally harmful chemicals, using more environmentally friendly solvents and cleaning agents, reducing waste emissions, and meeting the requirements of modern sustainable production. Environmental pollution during production can be reduced through circulating water systems and waste gas treatment devices.

[0098] Energy conservation and consumption reduction: Optimize energy consumption in the production process and use energy-saving equipment as much as possible. In addition to optimizing the hot air circulation system, energy waste can also be reduced by optimizing the steam heating system and selecting a high-efficiency steam generator.

[0099] Product Packaging and Storage

[0100] Packaging Design: Finished products should be packaged in moisture-proof and oxidation-resistant materials to prevent ingredient degradation due to dampness or oxidation. Aluminum foil bags, plastic drums, or vacuum packaging are recommended to ensure product stability.

[0101] Storage conditions: The product should be stored in a cool, dry environment, avoiding high temperatures and humidity that could affect its quality. Ideally, a suitable temperature and humidity control system should be provided to ensure the product's effectiveness during long-term storage.

[0102] The accelerator obtained according to the method of the embodiments of this application has the following beneficial effects:

[0103] Improving the living environment of microorganisms: The porous structure of sepiolite itself gives it a huge specific surface area, which not only helps it to adsorb a large number of trace elements, but also allows these elements to be slowly released during subsequent applications, maintaining an effective supply for a long time and providing ideal living conditions for microorganisms.

[0104] Enhanced ammonia nitrogen removal capacity: The presence of manganese dioxide helps promote the formation of free ammonia, which is crucial for the activity of ammonia-oxidizing bacteria in anaerobic environments, and can also indirectly support the adsorption function of sepiolite for micronutrients.

[0105] Enhancing system stability: Even in the face of sudden heavy metal pollution incidents, sepiolite can quickly capture these harmful substances with its strong adsorption capacity, reducing their harm to the microbial community in the ecosystem, thereby improving the overall treatment system's resilience and the possibility of long-term stable operation.

[0106] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for preparing a wastewater biochemical treatment accelerator using sepiolite as a carrier, characterized by, The application relates to a water treatment accelerator, which comprises the following steps: Preparing sepiolite powder, selecting 150-200 mesh sepiolite powder which is acidified and activated, and ensuring that the sepiolite powder has good pore structure and surface activity; Adding manganese dioxide powder, adding 200 mesh manganese dioxide powder into the sepiolite powder, and fully mixing the two, so as to enhance the trace element adsorption capacity of the sepiolite and promote the formation of free ammonia; The component proportion of the 150-200 mesh sepiolite which is acidified and activated is 5000-10000 parts; the component proportion of the 200 mesh manganese dioxide powder is 500-1000 parts; Adding metal salt solution, adding ferrous sulfate, zinc sulfate, copper sulfate, nickel sulfate, potassium iodide, sodium molybdate, cobalt sulfate, sodium selenite and potassium fluoride in sequence to carry out reaction, and ensuring that the proportion of each component is within the specified range, so as to enhance the supply of trace elements; After the metal salt solution is added, stirring and reaction are carried out, the mixture is put into a reaction kettle, and stirring reaction is carried out for 4 hours, so as to ensure that the components fully react; after the reaction is completed, the mixture is subjected to secondary activation treatment by using steam, so that the surface of the mixture is further increased in hydrophilicity, and the stability of the trace elements is promoted.

2. The method for preparing a wastewater biochemical treatment accelerator using sepiolite as a carrier according to claim 1, characterized in that, The specific proportion of the ferrous sulfate, zinc sulfate, copper sulfate, nickel sulfate, potassium iodide, sodium molybdate, cobalt sulfate, sodium selenite and potassium fluoride is as follows: Ferrous sulfate: 200-300 parts Zinc sulfate: 150-250 parts Copper sulfate: 100-150 parts Nickel sulfate: 50-100 parts Potassium iodide: 30-50 parts Sodium molybdate: 20-30 parts Cobalt sulfate: 10-20 parts Sodium selenite: 3-5 parts Potassium fluoride: 2-3 parts.

3. The method for preparing a wastewater biochemical treatment accelerator using sepiolite as a carrier according to claim 1, characterized in that, After the activation treatment, drying treatment is carried out, the dry method is adopted to remove excess water, and the final water treatment accelerator product is obtained.

4. The method for preparing a wastewater biochemical treatment promoter using sepiolite as a carrier according to claim 3, characterized in that, The accelerator is used in sewage treatment, especially in treatment of wastewater containing trace heavy metal pollutants or trace toxic substances, the powder is added into an inlet pool, mixed with sewage, and then pumped or self-flowed into an anaerobic tank.