Efficient internal circulation photobioreactor for sewage treatment
By designing a high-efficiency internal circulation photobioreactor, utilizing vortex tubes and built-in lamps to increase the contact time between microalgae and pollutants, and combining solar panels and perforated partition separation technology, the problems of low resource utilization and high energy consumption in traditional wastewater treatment have been solved, achieving efficient pollutant treatment and resource utilization.
Patent Information
- Application Number
- CN202422963106.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-03
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-12-03
AI Technical Summary
Traditional wastewater treatment processes are difficult to utilize pollutants as resources, have low treatment efficiency, high energy consumption, are difficult to separate algae from liquid, have poor pollutant treatment effects, and photobioreactors consume a large amount of electricity.
Design a high-efficiency internal circulation photobioreactor, using vortex tubes and built-in lamps to improve the contact time and photosynthetic efficiency between microalgae and pollutants, combined with solar panels to provide power, and equipped with perforated baffles and microalgae reflux pumps to achieve algal liquid sedimentation separation and microalgae reflux, and equipped with membrane modules to improve algal liquid separation efficiency.
It improves the treatment effect of microalgae on sewage, prolongs the biological retention time of microalgae, enhances resource utilization, reduces energy consumption, and enhances the efficiency of pollutant treatment and resource utilization, thus saving energy and protecting the environment.
Smart Images
Figure CN223509738U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bioreactor technology, and in particular to a high-efficiency internal circulation photobioreactor for wastewater treatment. Background Technology
[0002] In traditional wastewater treatment plants, the organic matter in wastewater is mainly converted into small molecules such as carbon dioxide, water, and organic acids through the respiration of microorganisms. Inorganic substances such as nitrogen and phosphorus are primarily removed through a combination of physicochemical and biological treatment processes. After treatment, nitrogen is released into the air as nitrogen gas, and phosphorus is removed as phosphate. However, traditional biological and physicochemical treatment processes struggle to achieve resource utilization of pollutants, resulting in low treatment efficiency. Traditional nitrogen and phosphorus removal processes require extended reaction times or increased wastewater recirculation to improve nitrogen and phosphorus removal efficiency, making it difficult to maintain long-term stability. Furthermore, achieving good nitrogen and phosphorus removal requires consuming more energy. In the 1950s, new technologies emerged on the market... This study established a biological treatment system based on microalgae, laying the foundation for microalgae biological treatment technology. To address issues such as low treatment efficiency, susceptibility to environmental factors, and low resource utilization in actual wastewater treatment processes, a novel photobioreactor system was designed. This extends the light contact time of microalgae in the photobioreactor, thereby improving pollutant treatment efficiency, shortening hydraulic retention time, and increasing the resource utilization rate of heavy pollutants in the system. Therefore, based on microalgae wastewater biological treatment technology, a circulating photobioreactor was designed to enhance the photosynthetic utilization rate of microalgae and strengthen the system's wastewater treatment effect. In addition, it is necessary to solve the problems of difficult algae-liquid separation, poor pollutant treatment effect, and the large amount of electricity required for the photobioreactor. Summary of the Invention
[0003] To address the aforementioned problems, this invention provides a high-efficiency internal circulation photobioreactor for wastewater treatment that can improve the utilization of light by microalgae, promote microalgae growth, reduce energy consumption, and increase the contact time between microalgae and pollutants, thereby enhancing the system's pollutant treatment effect.
[0004] The technical solution of this utility model is as follows: A high-efficiency internal circulation photobioreactor for sewage treatment includes a reactor shell, a water distributor connected to the reactor shell, a vortex tube connected to the reactor shell, a vortex circulation pump connected to the vortex tube, a built-in lamp connected to the reactor shell, an external power supply connected to the built-in lamp, a stirrer connected to the reactor shell, an outlet pipe connected to the reactor shell, and an outlet pump connected to the outlet pipe. The reactor shell is provided with an inlet and an outlet. One end of the water distributor is connected to the inlet, and one end of the outlet pipe is connected to the outlet. The outlet is located above the inlet. The vortex tube is spiral-shaped and is arranged around the central axis of the built-in lamp. The stirrer is located directly above the vortex tube.
[0005] Using the above technical solution, when wastewater treatment is required, firstly, wastewater flows into the distributor through the inlet, and then the distributor evenly distributes the wastewater across the reactor shell. Next, a vortex circulation pump powers the vortex tubes, circulating and lifting the wastewater sprayed from the distributor upwards. Then, the agitator is activated, allowing the wastewater and microalgae to mix thoroughly, thereby improving the microalgae's treatment effect on the wastewater. Furthermore, since the vortex tubes are arranged around the central axis of the built-in lamp tube, not only can the residence time of the microalgae in the vortex tubes be increased, but the growth efficiency of the microalgae can also be improved through the built-in light source, further enhancing the microalgae's treatment effect on the wastewater, and thus improving the system's overall pollutant treatment efficiency. A further feature of this invention is the inclusion of a solar panel, which is electrically connected to an external power source.
[0006] By adopting the above technical solution, since the solar panel is electrically connected to an external power source, it can absorb solar energy and convert it into electrical energy, which is then stored in an external power source and used to power the built-in light source. This improves the resource utilization rate of the device and plays a role in energy conservation and environmental protection.
[0007] A further feature of this invention is as follows: a perforated partition plate is provided on the reactor shell, which divides the reactor shell into a first reaction zone and a second reaction zone. The water distributor, built-in lamp tube, and vortex tube are located in the first reaction zone, and the water outlet, water outlet pipe, stirrer, and water pump are located in the second reaction zone. A microalgae reflux pipe and a microalgae reflux pump connected to the microalgae reflux pipe are provided between the first and second reaction zones. The positions of the two ends of the microalgae reflux pipe correspond to the positions of the end of the water distributor and the bottom of the stirrer, respectively.
[0008] By adopting the above technical solution, since the perforated baffle divides the reactor shell into a first reaction zone and a second reaction zone, when microalgae pass through the perforated baffle, the perforated baffle will separate the microalgae by sedimentation. Then, the microalgae return pump will provide power to the microalgae return pipe, so that the microalgae will return to the first reaction zone. This can effectively achieve full mixing of microalgae and pollutants in the algal solution, while promoting the homogenization of pollutants, prolonging the biological residence time of microalgae in the reactor, and improving the wastewater treatment efficiency of microalgae.
[0009] A further feature of this invention is that a membrane assembly is provided on the second reaction zone, and the membrane assembly is located between the stirrer and the water outlet.
[0010] By adopting the above technical solution, since a membrane module is provided in the second reaction zone, the problem of difficult algae separation in the reactor shell can be solved. At the same time, the utilization rate of microalgae can be further improved, and the treatment efficiency of wastewater can be further improved. Attached Figure Description
[0011] Appendix Figure 1 This is a schematic diagram of the structure of a high-efficiency internal circulation photobioreactor for wastewater treatment, according to a specific embodiment of the present invention.
[0012] 1-Reactor shell, 2-Water distributor, 3-Vortex tube, 4-Vortex circulation pump, 5-Built-in lamp, 6-External power supply, 7-Agitator, 8-Outlet pipe, 9-Outlet pump, 10-Inlet, 11-Outlet, 12-Solar panel, 13-Perforated baffle, 14-First reaction zone, 15-Second reaction zone, 16-Microalgae reflux pipe, 17-Microalgae reflux pump, 18-Membrane module. Detailed Implementation
[0013] like Figure 1 As shown, a high-efficiency internal circulation photobioreactor for wastewater treatment includes a reactor shell 1, a water distributor 2 connected to the reactor shell 1, a vortex tube 3 connected to the reactor shell 1, a vortex circulation pump 4 connected to the vortex tube 3, an internal lamp 5 connected to the reactor shell 1, an external power supply 6 connected to the internal lamp 5, a stirrer 7 connected to the reactor shell 1, an outlet pipe 8 connected to the reactor shell 1, and an outlet pump 9 connected to the outlet pipe 8. The reactor shell 1 is provided with an inlet 10 and an outlet 11. One end of the water distributor 2 is connected to the inlet 10, and one end of the outlet pipe 8 is connected to the outlet 11. The outlet 11 is located above the inlet 10. The vortex tube 3 is spiral-shaped and is arranged around the central axis of the internal lamp 5. The stirrer 7 is located directly above the vortex tube 3.
[0014] When wastewater treatment is required, wastewater first flows into the distributor 2 through the inlet 10. The distributor 2 then evenly distributes the wastewater across the reactor shell 1. A vortex circulation pump 4 powers the vortex tube 3, circulating and lifting the wastewater sprayed from the distributor 2 upwards. The agitator 7 is then activated, ensuring thorough mixing of the wastewater and microalgae, thus improving the microalgae's treatment effect. Furthermore, since the vortex tube 3 is arranged around the central axis of the built-in lamp tube 5, it not only increases the residence time of the microalgae within the vortex tube 3 but also enhances their growth efficiency through the built-in light source, further improving the microalgae's wastewater treatment effect and ultimately enhancing the system's overall pollutant treatment efficiency. The system also includes a solar panel 12, which is electrically connected to an external power source. Because the solar panel 12 is connected to an external power source, it absorbs solar energy and converts it into electrical energy, which is then stored in the external power supply 6. This external power supply 6 then powers the built-in light source, improving the device's resource utilization and contributing to energy conservation and environmental protection.
[0015] The reactor shell 1 is provided with a perforated partition 13 connected to the reactor shell 1. The perforated partition 13 divides the reactor shell 1 into a first reaction zone 14 and a second reaction zone 15. The water distributor 2, the built-in lamp tube 5 and the vortex tube 3 are arranged in the first reaction zone 14. The water outlet 11, the water outlet pipe 8, the stirrer 7 and the water pump 9 are arranged in the second reaction zone 15. A microalgae return pipe 16 and a microalgae return pump 17 connected to the microalgae return pipe 16 are provided between the first reaction zone 14 and the second reaction zone 15. The positions of the two ends of the microalgae return pipe 16 correspond to the positions of the ends of the water distributor 2 and the bottom of the stirrer 7, respectively. Since the perforated baffle 13 divides the reactor shell 1 into a first reaction zone 14 and a second reaction zone 15, when microalgae pass through the perforated baffle 13, the perforated baffle 13 will separate the microalgae by sedimentation. Then, the microalgae return pump 17 will provide power to the microalgae return pipe 16, so that the microalgae will return to the first reaction zone 14. This can effectively achieve full mixing of microalgae and pollutants in the algal solution, while promoting the homogenization of pollutants, prolonging the biological residence time of microalgae in the reactor, and improving the wastewater treatment efficiency of microalgae.
[0016] The second reaction zone 15 is provided with a membrane module 18, which is located between the stirrer 7 and the outlet 11.
[0017] Since the membrane module 18 is provided on the second reaction zone 15, the problem of difficult algae separation in the reactor shell 1 can be solved. At the same time, the utilization rate of microalgae can be further improved, and the treatment efficiency of sewage can be further improved.
Claims
1. A high-efficiency internal circulation photobioreactor for wastewater treatment, characterized in that: The reactor includes a reactor shell, a water distributor connected to the reactor shell, a vortex tube connected to the reactor shell, a vortex circulation pump connected to the vortex tube, a built-in lamp connected to the reactor shell, an external power supply connected to the built-in lamp, a stirrer connected to the reactor shell, a water outlet pipe connected to the reactor shell, and a water outlet pump connected to the water outlet pipe. The reactor shell is provided with an inlet and an outlet. One end of the water distributor is connected to the inlet, and one end of the water outlet pipe is connected to the outlet. The outlet is located above the inlet. The vortex tube is spiral-shaped and is arranged around the central axis of the built-in lamp. The stirrer is located directly above the vortex tube.
2. A high-efficiency internal circulation photobioreactor for wastewater treatment according to claim 1, characterized in that: It also includes solar panels, which are electrically connected to an external power source.
3. A high-efficiency internal circulation photobioreactor for wastewater treatment according to claim 1, characterized in that: The reactor shell is provided with a perforated partition plate connected to the reactor shell, which divides the reactor shell into a first reaction zone and a second reaction zone. The water distributor, built-in lamp tube and vortex tube are arranged in the first reaction zone, and the water outlet, water outlet pipe, stirrer and water pump are arranged in the second reaction zone. A microalgae return pipe and a microalgae return pump connected to the microalgae return pipe are provided between the first reaction zone and the second reaction zone. The positions of the two ends of the microalgae return pipe correspond to the positions of the end of the water distributor and the bottom of the stirrer, respectively.
4. A high-efficiency internal circulation photobioreactor for wastewater treatment according to claim 3, characterized in that: A membrane module is provided on the second reaction zone, and the membrane module is located between the agitator and the water outlet.