A reaction device for treating coking wastewater by using coke powder-based iron-carbon material coupled with bacteria-algae system
Patent Information
- Application Number
- CN202521927524.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-08
- Publication Date
- 2026-09-11
- Estimated Expiration
- 2035-09-08
AI Technical Summary
但是，将菌藻混合物从处理后的废水中分离比较困难，这些藻类排入到水体后会引发额外的环境问题
本实用新型通过焦粉基铁碳材料固定化菌藻体系，同步达成污染物高效降解、ROS胁迫缓解及系统稳定性提升，为焦化废水处理与资源回收提供了创新解决方案。
Smart Images
Figure CN224740867U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a reaction device for treating coking wastewater by coupling a coke powder-based iron-carbon material with a bacterial and algal system. Background Technology
[0002] The highly toxic coking wastewater generated during coke production, when directly discharged into waterways, causes serious environmental problems, and traditional biological treatment technologies struggle to effectively treat it. In this context, algae-bacterial symbiotic systems are considered a green and efficient alternative to traditional activated sludge processes. However, separating the algae-bacterial mixture from the treated wastewater is challenging, and the algae's release into water bodies can trigger additional environmental issues. During co-cultivation, bacteria and algae promote electron transfer through various interactions, effectively activating O2 to generate reactive oxygen species (ROS). While ROS helps degrade and mineralize various organic pollutants, excessive levels can damage the algae-bacterial system itself. Coke powder is produced during the coking process when coal is dry-distilled at high temperatures under air-isolated conditions. After quenching, crushing, and screening, the coke particles are separated into coke powder. If not effectively treated, this powder can pollute the atmosphere, soil, and water resources, endangering human health. Therefore, coke powder can be used as a raw material to prepare coke powder-based iron-carbon materials as immobilization carriers for co-cultivation with bacteria and algae. This improves system stability and efficiency while achieving waste utilization. Utility Model Content
[0003] This invention addresses the technical problems of how to effectively treat wastewater from coke powder and how to improve the wastewater treatment effect of bacteria and algae systems by providing a reaction device that uses coke powder-based iron-carbon materials coupled with a bacteria and algae system to treat coking wastewater.
[0004] A reaction device for treating coking wastewater using coke powder-based iron-carbon materials coupled with a bacterial and algal system includes a stirrer, a microporous aeration disc, an LED light strip, and a reaction tank. The stirrer is installed inside the reaction tank, and the LED light strip is evenly spirally wound around the outside of the reaction tank. An inlet is provided on one side of the lower part of the reaction tank, and an outlet is provided on the other side. The microporous aeration disc is located at the bottom of the reaction tank.
[0005] A method for treating coking wastewater using a reaction device coupled with a microbial-algae system based on coke powder-based iron-carbon materials is specifically carried out according to the following steps: 1. A magnetic coke powder-based iron-carbon material is prepared by mixing coke powder, FeCl3 and FeCl2 and then using a hydrothermal synthesis method. 2. The remaining sludge after sieving is acclimated, and after acclimation, it is concentrated by gravity. The supernatant is discarded, and then co-cultured with microalgae to obtain a bacterial-algae symbiotic system; the microalgae are... Scenedesmus sp. R-16; 3. Using actual coking wastewater, the bacterial-algae symbiotic system obtained in step 2 was inoculated into the coking wastewater, and the coke powder-based iron-carbon material prepared in step 1 was simultaneously added into the coking wastewater. After cultivation for a certain period of time, the pollutant indicators and active oxygen content were measured. Fourth, actual coking wastewater was injected into a reaction device that uses a coke powder-based iron-carbon material coupled with a bacterial-algae system to treat coking wastewater. The bacterial-algae symbiotic system from step two and the coke powder-based iron-carbon material prepared in step one were added to the reaction device for long-term operation testing. Pollutant indicators were measured daily to complete the treatment of coking wastewater.
[0006] The coke powder in step one has a particle size in the micrometer range, and the particle size of the coke powder-based iron-carbon material obtained is 5-15 micrometers.
[0007] The beneficial effects of this utility model are as follows: This invention utilizes a coke powder-based iron-carbon material to immobilize a bacterial and algal system, simultaneously achieving efficient pollutant degradation, ROS stress mitigation, and improved system stability, providing an innovative solution for coking wastewater treatment and resource recovery.
[0008] (1) This utility model uses coke powder generated during the coking process as raw material to prepare coke powder-based iron-carbon material, which is used to improve the efficiency of the bacterial-algae symbiotic system, thus achieving the purpose of waste utilization and providing assistance for low-carbon production.
[0009] (2) The coke powder-based iron-carbon material of this invention can act as an immobilization carrier in the system, improving the stability of bacteria and algae, and the material's own properties can also effectively adsorb pollutants. In addition, the magnetic properties of the material can also enable bacteria and algae to be effectively separated from the water after they are attached to the material, avoiding secondary pollution after discharge. At the same time, since the particle size of the prepared coke powder-based iron-carbon material is in the micron range, it is suspended in the wastewater. Through aeration, its movement trajectory in the reaction device is consistent with that of bacteria and algae, and the binding is tight, which is conducive to the formation of effective adsorption.
[0010] (3) The hybrid system in this invention can reduce the reactive oxygen generated inside the bacteria and algae through the electron transfer capability of the material surface, thus avoiding damage to the bacteria and algae themselves due to excessive reactive oxygen.
[0011] (4) The reactor in this utility model is illuminated by LED light strips covering the surface, which provides comprehensive coverage and uniform illumination inside the reactor; the stirring paddle speed is controlled by a motor, which is uniform and gentle; a microporous aeration disc is used for aeration at the bottom, which ensures uniform gas diffusion and does not produce excessively large bubbles; the stirring structure composed of the stirring paddle and the microporous aeration disc can achieve a good mixing effect without damaging the symbiotic system of bacteria and algae and the adhesion effect on the fixed carrier.
[0012] This invention relates to a method for treating coking wastewater. Attached Figure Description
[0013] Figure 1 This is a comparison chart of the removal rates of phenolic substances after cultivation in Example 1 and Comparative Examples 1 and 2; Figure 2 This is a comparison chart of COD removal rates after cultivation for Example 1 and Comparative Examples 1 and 2; Figure 3 This is a comparison chart of the reactive oxygen species production after cultivation in Example 1 and Comparative Examples 1 and 2; Figure 4 This is a comparison diagram of the activities of various antioxidant enzymes after culture in Example 1 and Comparative Examples 1 and 2; Figure 5 This is a comparison chart of ammonia nitrogen removal rates after cultivation in Example 1 and Comparative Examples 1 and 2; Figure 6 This is a comparison chart of the total phosphorus removal rate of phenolic substances after cultivation in Example 1 and Comparative Examples 1 and 2; Figure 7 This is a mass balance analysis diagram of phenolic substances after cultivation in Example 1 and Comparative Examples 1 and 2; Figure 8 This is a schematic diagram of a reaction device for treating coking wastewater using a coke powder-based iron-carbon material coupled with a bacterial-algae system, as described in Example 2. Figure 9 This is a schematic diagram of an LED light strip for a reaction device that uses coke powder-based iron-carbon materials coupled with a bacterial-algae system to treat coking wastewater, as described in Example 2. Figure 10 This is a comparison chart of the COD of the influent and effluent from the reaction apparatus of Example 2 and Comparative Example 3; Figure 11 This is a comparison diagram of ammonia nitrogen levels in the inlet and outlet water of the reaction apparatus in Example 2 and Comparative Example 3; Figure 12 This is a comparison chart of the total phosphorus in the influent and effluent of the reaction apparatus in Example 2 and Comparative Example 3; Figure 13 XPS image of the coke powder-based iron-carbon material prepared in Example 1; Figure 14 VSM diagrams of the coke powder-based iron-carbon material prepared in Example 1, the coke powder-based iron-carbon material after water treatment in Example 1, and the coke powder-based iron-carbon material after water treatment in Example 2. Detailed Implementation
[0014] Specific Implementation Method 1: This implementation method is a reaction device for treating coking wastewater using a coke powder-based iron-carbon material coupled with a bacterial and algal system. The reaction device includes a stirrer 1, a microporous aeration disc 2, an LED light strip 6, and a reaction tank 3. The stirrer 1 is installed inside the reaction tank 3, and the LED light strip 6 is evenly spirally wound around the outside of the reaction tank 3. An inlet 5 is provided on one side of the lower part of the reaction tank 3, and an outlet 4 is provided on the other side. The microporous aeration disc 2 is located at the bottom of the reaction tank 3.
[0015] Specific Implementation Method Two: This implementation method differs from Specific Implementation Method One in that the reaction vessel 3 is made of a translucent wall material. Everything else is the same as in Specific Implementation Method One.
[0016] Specific Implementation Method Three: This implementation method differs from Specific Implementation Method One or Two in that the spacing between the LED light strips 6 is 1-5cm. Everything else is the same as in Specific Implementation Method One or Two.
[0017] Specific Implementation Method Four: This implementation method differs from Specific Implementation Methods One through Three in that a flow guide tube is installed inside the reaction vessel 3. Everything else is the same as Specific Implementation Methods One through Three.
[0018] Installing a vertical flow guide in the reaction vessel can guide the fluid to form a clear and controllable circulation path, improving the directionality and efficiency of mixing.
[0019] Specific Implementation Method 5: This implementation method differs from Specific Implementation Methods 1 to 4 in that a longitudinal baffle is installed inside the reaction vessel 3. Everything else is the same as Specific Implementation Methods 1 to 4.
[0020] Baffles can effectively disrupt fluid swirl, converting tangential flow into radial and axial flow, thereby improving overall mixing and mass transfer efficiency.
[0021] The scope of this utility model is not limited to the above-described embodiments; a combination of one or more specific embodiments can also achieve the purpose of this utility model.
[0022] Example 1
[0023] A method for treating coking wastewater using coke powder-based iron-carbon materials coupled with a microbial-algae system, specifically comprising the following steps: 1. Coke powder, FeCl3 and FeCl2 were mixed in 100 mL of pure water system. The mass of coke powder was 50 g, the total mass of FeCl3 and FeCl2 was 24 g, and the molar ratio of FeCl3 to FeCl2 was 2:1. After stirring at 80℃ for 1 h, sodium hydroxide solution was added to adjust the pH to 10-11, and stirring was continued for another 1 h. Stirring was then stopped, and the mixture was left at room temperature for 24 h. The mixture was then washed alternately with pure water and anhydrous ethanol, filtered, and dried in an oven at 60℃ for 12 h to obtain a magnetic coke powder-based iron-carbon material. 2. The residual sludge taken from the Harbin Wenchang Wastewater Treatment Plant was acclimated using actual coking wastewater, and after removing the supernatant, it was mixed with... Scenedesmus sp. R-16 was cultured at a volume ratio of 1:5 in a light incubator (25±1 ℃, 150 r / min, light-dark ratio of 12 h:12 h, light intensity of 3500 lux) for 3 days to obtain a bacterial-algal symbiotic system. 3. Using 300 mL of actual coking wastewater, the bacterial-algae symbiotic system obtained in step 2 was inoculated into the coking wastewater at a volume ratio of 10%, and the coke powder-based iron-carbon material prepared in step 1 was simultaneously added to the coking wastewater at a dosage of 10 g / L. The wastewater was placed in a light incubator (25±1 ℃, 150 r / min, light-dark ratio of 12 h:12 h, light intensity of 3500 lux) for pollutant removal. After the pollutants were degraded to a certain extent, the bacteria and algae were collected, and the content of active oxygen in the bacteria and algae was measured. Step 3, determining the reactive oxygen species (ROS) content in bacteria and algae, is as follows: Take 2 mL of cultured bacteria and algae solution, centrifuge at 8000 r / min for 5 min, discard the supernatant, and wash the resulting bacterial-algae mixture 2-3 times with 0.05 M PBS solution. After centrifugation, discard the supernatant and add 1 mL of diluted DCFH-DA probe (10 mM DCFH-DA: 0.1 M PBS (pH=7.0) = 1:1000) to resuspend the bacterial-algae mixture. Incubate at 37 ℃ with shaking for 30 min to allow the probe to fully penetrate the cells. Then centrifuge at 8000 r / min for 5 min, discard the supernatant, add 1 mL of 0.1 M PBS solution to resuspend the cells, and measure the fluorescence intensity at an excitation wavelength (EX) of 488 nm and an emission wavelength (EW) of 525 nm.
[0024] The results showed that, under the conditions of phenolic concentration of 300±20 g / L and COD concentration of 700±50 mg / L, after 5 days of cultivation, the bacterial-algae system containing coke powder-based iron-carbon material achieved a degradation rate of 53.6% for the main pollutants in coking wastewater on the first day and more than 99% on the fifth day, with an active oxygen intensity of 616.23.
[0025] Example 2
[0026] A reaction device for treating coking wastewater using coke powder-based iron-carbon materials coupled with a bacterial and algal system, the reaction device includes a stirrer 1, a microporous aeration disc 2, an LED light strip and a reaction tank 3, wherein the stirrer 1 is installed inside the reaction tank 3, the LED light strip 6 is evenly spirally wound on the outside of the reaction tank 3, an inlet 5 is provided on one side of the lower part of the reaction tank 3 and an outlet 4 is provided on the other side, and the microporous aeration disc 2 is located at the bottom of the reaction tank 3.
[0027] A method for treating coking wastewater using a reaction device coupled with a microbial-algae system based on coke powder-based iron-carbon materials. 1. Coke powder, FeCl3 and FeCl2 were mixed in 100 mL of pure water system. The mass of coke powder was 50 g, the total mass of FeCl3 and FeCl2 was 24 g, and the molar ratio of FeCl3 to FeCl2 was 2:1. After stirring at 80℃ for 1 h, sodium hydroxide solution was added to adjust the pH to 10-11, and stirring was carried out for another 1 h. Then it was placed at room temperature for 24 h. Then it was washed alternately with pure water and anhydrous ethanol, filtered, and then dried in an oven at 60℃ to prepare magnetic coke powder-based iron-carbon material. 2. The residual sludge taken from the Harbin Wenchang Wastewater Treatment Plant was acclimated using actual coking wastewater, and after removing the supernatant, it was mixed with... Scenedesmus sp. R-16 was cultured at a volume ratio of 1:5 in a light incubator (25±1 ℃, 150 r / min, light-dark ratio of 12 h:12 h, light intensity of 3500 lux) for 3 days to obtain a bacterial-algal symbiotic system. 3. 5L of actual coking wastewater was injected into a reaction device that uses a coke powder-based iron-carbon material coupled with a bacterial-algae system to treat coking wastewater. The bacterial-algae symbiotic system obtained in step 2 was inoculated into the coking wastewater at a volume ratio of 10%, and the coke powder-based iron-carbon material prepared in step 1 was simultaneously added to the reaction device at a dosage of 1 g / L. An aeration pump was used for air supply at a rate of 0.6±0.1 mL / min, with an aeration time ratio of 12h:12h. LED light strips were used for illumination at a light-dark ratio of 12h:12h. A mechanical stirrer was used for stirring at a speed of 150 r / min, with a daily exchange volume of 50%. The wastewater parameters for the first ten days were 550±50 mg / L COD, 35±5 mg / L ammonia nitrogen, and 5±0.5 mg / L total phosphorus. The wastewater parameters for the next ten days were 800±50 mg / L COD, 80±5 mg / L ammonia nitrogen, and 10±0.5 mg / L total phosphorus.
[0028] The results showed that, under both wastewater concentrations, after 20 days of cultivation, the bacterial-algae system containing coke powder-based iron-carbon materials exhibited stable degradation of major pollutants in coking wastewater, with COD and ammonia nitrogen reductions exceeding 90%.
[0029] Comparative Example 1: This comparative method for treating coking wastewater includes the following steps: 1. The residual sludge taken from the Harbin Wenchang Wastewater Treatment Plant was acclimated using actual coking wastewater. After removing the supernatant, it was mixed with... Scenedesmus sp. R-16 was cultured at a volume ratio of 1:5 in a light incubator (25±1 ℃, 150 r / min, light-dark ratio of 12 h:12 h, light intensity of 3500 lux) for 3 days to obtain a bacterial-algal symbiotic system. 2. Using 300 mL of actual coking wastewater, the bacterial-algae symbiotic system obtained in step 1 was inoculated into the wastewater at a volume ratio of 10%, and placed in a light incubator (25±1 ℃, 150 r / min, light-dark ratio of 12 h:12 h, light intensity of 3500 lux) for pollutant removal. After the pollutants were degraded to a certain extent, the bacteria and algae were collected, and the content of active oxygen in the bacteria and algae was measured. Step 2, determining the reactive oxygen species (ROS) content in bacteria and algae, is as follows: Take 2 mL of cultured bacteria and algae solution, centrifuge at 8000 r / min for 5 min, discard the supernatant, and wash the resulting bacterial-algae mixture 2-3 times with 0.05 M PBS solution. After centrifugation, discard the supernatant and add 1 mL of diluted DCFH-DA probe (10 mM DCFH-DA: 0.1 M PBS (pH=7.0) = 1:1000) to resuspend the bacterial-algae mixture. Incubate at 37 ℃ with shaking for 30 min to allow the probe to fully penetrate the cells. Then centrifuge at 8000 r / min for 5 min, discard the supernatant, add 1 mL of 0.1 M PBS solution to resuspend the cells, and then centrifuge at an excitation wavelength (E). X The emission wavelength is 488 nm. W The fluorescence intensity was measured at 525 nm.
[0030] The results showed that, under the conditions of phenolic concentration of 300±20 g / L and COD concentration of 700±50 mg / L, after 5 days of cultivation, the pure bacterial-algae system achieved a degradation rate of 18.4% for the main pollutants in coking wastewater on the first day and more than 98% on the fifth day, with an active oxygen intensity of 1612.49.
[0031] Comparative Example 2: This comparative method for treating coking wastewater includes the following steps: 1. The residual sludge taken from the Harbin Wenchang Wastewater Treatment Plant was acclimated using actual coking wastewater. After removing the supernatant, it was mixed with... Scenedesmus sp. R-16 was cultured at a volume ratio of 1:5 in a light incubator (25±1 ℃, 150 r / min, light-dark ratio of 12 h:12 h, light intensity of 3500 lux) for 3 days to obtain a bacterial-algal symbiotic system. 2. Using 300 mL of actual coking wastewater, the bacterial-algae symbiotic system obtained in step 1 was inoculated into the wastewater at a volume ratio of 10%, and polyurethane sponge filler accounting for 20% of the total volume of the system was added. The system was placed in a light incubator (25±1 ℃, 150 r / min, light-dark ratio of 12 h:12 h, light intensity of 3500 lux) to remove pollutants. After the pollutants were degraded to a certain extent, the bacteria and algae were collected and the content of active oxygen in the bacteria and algae was measured.
[0032] Step 2: Determination of reactive oxygen species (ROS) content in bacteria and algae. Take 2 mL of cultured bacteria and algae solution, centrifuge at 8000 r / min for 5 min, discard the supernatant, and wash the resulting bacterial-algae mixture 2-3 times with 0.05 M PBS solution. After centrifugation, discard the supernatant and add 1 mL of diluted DCFH-DA probe (10 mM DCFH-DA: 0.1 M PBS (pH=7.0) = 1:1000) to resuspend the bacterial-algae mixture. Incubate at 37℃ with shaking for 30 min to allow the probe to fully penetrate the cells. Then centrifuge at 8000 r / min for 5 min, discard the supernatant, add 1 mL of 0.1 M PBS solution to resuspend the cells, and then centrifuge at an excitation wavelength (E). X The emission wavelength is 488 nm. W The fluorescence intensity was measured at 525 nm.
[0033] The results showed that, under the conditions of phenolic concentration of 300±20 g / L and COD concentration of 700±50 mg / L, after 5 days of cultivation, the system with polyurethane sponge filler achieved a degradation rate of 36.3% for the main pollutants in coking wastewater on the first day and more than 99% on the fifth day, with an active oxygen intensity of 914.49.
[0034] Comparative Example 3: This comparative method for treating coking wastewater includes the following steps: I. Excess sludge taken from the Harbin Wenchang Wastewater Treatment Plant was acclimated using actual coking wastewater. After acclimation, gravity thickening was performed, the supernatant was discarded, and the sludge was co-cultured with microalgae. The volume ratio of microalgae to excess sludge was controlled at 5:1 during the co-culture process. The co-culture temperature was 25 ℃, the rotation speed was 150 r / min, the light-dark ratio was 12 h:12 h, the light intensity was 3500 lux, and the culture period was 3 days to obtain a bacterial-algae symbiotic system. The microalgae were... Scenedesmus sp. R-16; 2. The bacterial-algae symbiotic system obtained in step 1 was inoculated into 300 mL of actual coking wastewater. The inoculation amount of the bacterial-algae symbiotic system was controlled to be 10% of the volume of coking wastewater. After cultivation, the bacterial-algae liquid was collected to determine the pollutant index and active oxygen content. The cultivation process was carried out at a temperature of 25℃, a rotation speed of 150 r / min, a light-dark ratio of 12 h:12 h, and a light intensity of 3500 lux. The treatment was then completed. 3. 5L of actual coking wastewater was injected into a reaction device that uses a coke powder-based iron-carbon material coupled with a bacterial-algae system to treat coking wastewater. The bacterial-algae symbiotic system obtained in step 1 was inoculated into the wastewater at a volume ratio of 10%. An aeration pump was used to supply air at a rate of 0.6±0.1 mL / min, with an aeration time ratio of 12h:12h. LED light strips were used for illumination, with a light-to-dark ratio of 12h:12h. A mechanical stirrer was used for stirring at a speed of 150 r / min, with a daily volume exchange rate of 50%. The wastewater parameters for the first ten days were 550±50 mg / L COD, 35±5 mg / L ammonia nitrogen, and 5±0.5 mg / L total phosphorus. The wastewater parameters for the next ten days were 800±50 mg / L COD, 80±5 mg / L ammonia nitrogen, and 10±0.5 mg / L total phosphorus.
[0035] The results showed that, under both wastewater concentrations, after 20 days of cultivation, the bacterial-algae system maintained stable degradation of the main pollutants in the coking wastewater, but the effect was slightly lower than that of the cultivation system after the addition of materials.
[0036] The above results indicate that, compared with the systems using pure bacteria and algae and polyurethane filler in Comparative Examples 1 and 2, the treatment group in Example 1 with added coke powder-based iron-carbon material showed improved efficiency in wastewater treatment, with all pollutant indicators reaching their lowest values on the first day. Regarding reactive oxygen species (ROS) generation, the ROS generation in the pure bacteria and algae symbiotic system was significantly higher than that in the group with added coke powder-based iron-carbon material and the group with added polyurethane filler. This suggests that the addition of the carrier can effectively reduce ROS generation without compromising treatment effectiveness.
[0037] Therefore, through Figure 1 , 2 In groups 3, 4, 5, and 6, considering the removal efficiency of phenolic substances, COD removal efficiency, reactive oxygen species content, and antioxidant enzyme content, although all treatment groups ultimately achieved a COD removal rate of over 99%, the material group exhibited a faster degradation rate. For ammonia nitrogen and total phosphorus, the material group reached lower concentration levels by day 2; the removal effect of the packing material group was also superior to the pure bacterial-algae group. At the end of the cultivation, the difference in ammonia nitrogen concentration among the treatment groups was small, while the material group had the highest TP removal rate. Meanwhile, Figure 7 Mass balance analysis showed that the introduction of immobilized carriers significantly improved the adsorption contribution of pollutants. Figure 10 , Figure 11 and Figure 12 The reactor pollutant removal performance showed that the removal of COD and total phosphorus was improved after the addition of the material, while the removal efficiency of ammonia nitrogen was not significantly different. Figure 13 as well as Figure 14 To characterize the properties of the material. Figure 13The XPS images show that the main components of coke powder-based iron-carbon materials are carbon, iron, and oxygen. Iron can enhance the denitrification and phosphorus removal effects to a certain extent, and some iron can participate in algal photosynthesis and microbial respiration, improving the activity of bacteria and algae. The carbon skeleton plays a supporting role and can adsorb certain pollutants through surface pores. The presence of oxygen can regulate the surface redox environment, providing a suitable living space for bacteria. Figure 14 The VSM plot shows that although the treatment time is negatively correlated with the magnetic effect, the magnetic properties are still quite considerable. In summary, the addition of coke powder-based iron-carbon materials can significantly improve the removal efficiency of bacteria and algae for coking wastewater and effectively separate it from the water.
Claims
1. A reaction device for treating coking wastewater using coke powder-based iron-carbon materials coupled with a bacterial-algae system, characterized in that... The reaction device includes a stirrer (1), a microporous aeration disc (2), an LED light strip (6), and a reaction tank (3). The stirrer (1) is installed inside the reaction tank (3), and the LED light strip (6) is evenly spirally wound around the outside of the reaction tank (3). An inlet (5) is provided on one side of the lower part of the reaction tank (3), and an outlet (4) is provided on the other side. The microporous aeration disc (2) is located at the bottom of the reaction tank (3).
2. The reaction device for treating coking wastewater using a coke powder-based iron-carbon material coupled with a bacterial-algae system according to claim 1, characterized in that... The reaction vessel (3) is made of a translucent wall material.
3. The reaction device for treating coking wastewater using a coke powder-based iron-carbon material coupled with a microbial-algae system according to claim 1, characterized in that... The spacing between the LED light strips (6) is 1-5cm.
4. The reaction device for treating coking wastewater using a coke powder-based iron-carbon material coupled with a bacterial-algae system according to claim 1, characterized in that... A flow guide tube is installed inside the reaction vessel (3).
5. The reaction device for treating coking wastewater using a coke powder-based iron-carbon material coupled with a bacterial-algae system according to claim 1, characterized in that... A longitudinal baffle is installed inside the reaction vessel (3).