Apparatus and method for degrading manganese and SMZ in surface water by using light-irradiation reinforced aeration fluidization of sodium manganite and algal substance coexisting system

Abstract

The application discloses a device and method for degrading manganese and SMZ in surface water in a light-irradiation reinforced aeration fluidized water-sodium-manganese-ore-and-algal-substance coexisting system, which comprises a raw water tank, a membrane bioreactor, an aeration strip, an aeration pump and a water outlet collecting tank; the raw water tank provides raw water to the membrane bioreactor; the membrane bioreactor comprises a box body, a ceramic membrane, water sodium manganese ore and a light source; the aeration strip is arranged in the box body; the ceramic membrane is vertically arranged in the box body and located above the aeration strip; the ceramic membrane is internally provided with a cavity, which is a purification zone; the water sodium manganese ore is dispersedly arranged in a raw water zone; and the light source illuminates the box body; the bubbles generated by the aeration strip drive the water flow to flow upwards; in the process, the water sodium manganese ore contacts and adsorbs and oxidizes the raw water; the light irradiation is combined to remove the manganese and SMZ; after the raw water is purified, the raw water enters the cavity of the ceramic membrane; and the cavity is communicated with the water outlet collecting tank. The application has good removal effect on manganese ions and SMZ; the effluent can be used for a decentralized drinking water facility; and the application has practical significance.

Description

Technical Field

[0001] This invention relates to the field of surface water purification technology, specifically to an apparatus and method for degrading manganese and SMZ in surface water using a light-enhanced aeration system where sodium manganese ore and algae coexist. Background Technology

[0002] Excessive manganese in water may be one of the causes of certain endemic diseases. Sodium manganese ore has a strong adsorption capacity for divalent metal ions, especially Mn. 2+ The affinity for Mn is extremely high. Water-sodium manganese ore has a strong affinity for Mn. 2+ The adsorption reaction is very fast, and the entire process takes less than 1 second.

[0003] To address the aforementioned technical problems, existing patent application CN117985846A discloses a manganese removal device and method for a solid-bed ceramic membrane bioreactor using high-pressure gas dispersion of sodium manganese hydrate. This method employs an air compressor combined with a high-pressure air gun to flush the ceramic particles and sodium manganese hydrate particles within the bioreactor. However, this technical solution is designed for groundwater treatment, while surface water contains algae, humus, SMZ, and other substances, making this solution unsuitable for surface water treatment. Furthermore, this technical solution generates high pressure and exhibits unstable gas flow, failing to provide a continuous and stable bubble flow.

[0004] Furthermore, SMZ, a widely used sulfonamide antibiotic, can cause persistent toxicity to aquatic organisms, and its residues can promote the development of drug-resistant bacteria. It also poses a long-term, low-dose exposure risk to human health through drinking water. Current purification processes have not been able to completely remove SMZ from water. Summary of the Invention

[0005] To address the serious membrane fouling problems and poor manganese and SMZ removal effects in existing surface water purification devices and methods, this invention proposes a device and method for degrading manganese and SMZ in surface water using a light-enhanced aeration system where sodium manganese ore and algae coexist.

[0006] The objective of this invention is achieved through the following technical solution: a device for degrading manganese and SMZ in surface water using a light-enhanced aeration system of sodium manganese ore and algae, comprising a raw water tank, a membrane bioreactor, aeration strips, an aeration pump, and an effluent collection tank; the raw water tank provides raw water to the membrane bioreactor, which includes a tank body, a ceramic membrane, sodium manganese ore, and a light source; the aeration strips are disposed within the tank body, and the aeration pump is connected to the aeration strips via an air pipe; the ceramic membrane is vertically disposed within the tank body and above the aeration strips, with a cavity inside serving as a purification zone and a raw water zone outside; the sodium manganese ore is dispersed within the raw water zone; and the light source illuminates the tank body; the bubbles generated by the aeration strips drive the water flow upwards, thereby bringing the sodium manganese ore into contact with the raw water for adsorption and oxidation, combined with the removal of manganese and SMZ by the light, and the purified raw water enters the cavity of the ceramic membrane, which is connected to the effluent collection tank.

[0007] Compared with existing technologies, this invention introduces sodium manganese ore into a ceramic membrane bioreactor. The raw water interacts with the activated membrane of the sodium manganese ore to remove manganese, resulting in effluent quality that meets national standards. Furthermore, addressing the membrane fouling problem during long-term use of ceramic membranes, this invention utilizes the friction generated on the membrane surface during aeration to effectively flush away contaminants, thus effectively controlling membrane fouling. Moreover, under sunlight, algae-derived organic matter (EOM) in surface water acts as a photosensitizer, producing superoxide, which enhances the oxidation of manganese ions, the degradation of SMZ, and other pollutants. Simultaneously, the abundant active Mn(III) in the sodium manganese ore complexes with the algal EOM, and the complex directly degrades SMZ. This invention utilizes a light-enhanced aeration system of gaseous sodium manganese ore and algae to degrade manganese and SMZ in surface water. Compared to existing devices and methods, this invention significantly reduces membrane fouling, extends membrane lifespan, has high water production efficiency, and exhibits excellent removal effects for manganese ions and SMZ. The treated effluent can be used in decentralized drinking water facilities, demonstrating practical significance.

[0008] Preferably, the concentration of sodium manganese ore loaded in the membrane bioreactor is 2 g / L.

[0009] Specifically, the aeration rate of the aeration strip is 25 ml / min, corresponding to an aeration intensity of 0.375 m³ / (m²). 2 ·h), so that the sodium manganese ore is completely fluidized.

[0010] Furthermore, it also includes a gas flow meter, which is installed on the gas pipe.

[0011] Furthermore, it also includes a peristaltic pump, a steady-flow tank, and an inlet valve. The raw water tank is connected to the steady-flow tank through the peristaltic pump, and the steady-flow tank is connected to the membrane bioreactor through the inlet valve.

[0012] Furthermore, the membrane bioreactor also includes a raw water inlet and a purified water outlet. The raw water inlet is located at the bottom of the tank, and the steady flow tank is connected to the raw water inlet through the inlet valve. The purified water outlet is connected to the cavity of the ceramic membrane, and the effluent collection tank is connected to the purified water outlet through the effluent pipe.

[0013] To address the aforementioned technical problems, this invention also provides another technical solution: a method for degrading manganese and SMZ in surface water using a light-enhanced aeration system of water-sodium manganese ore and algae. This method utilizes the aforementioned device for degrading manganese and SMZ in surface water using the same system. The method involves: controlling the upward flow of raw water into the membrane bioreactor; the aeration pump delivering gas to the aeration strips; and activating the light source to illuminate the tank. The bubbles generated by the aeration strips drive the water upward, thereby bringing the water-sodium manganese ore into contact with the raw water for adsorption and oxidation. Combined with the illumination for manganese and SMZ removal, the purified raw water enters the cavity of the ceramic membrane, and the purified water flows to the effluent collection tank.

[0014] Specifically, the aeration rate is 25 ml / min, corresponding to an aeration intensity of 0.375 m³ / (m²). 2 ·h).

[0015] Preferably, the concentration of sodium manganese ore loaded in the membrane bioreactor is 2 g / L.

[0016] Preferably, the lamp source is controlled to illuminate for 12 hours and turn off for 12 hours to ensure the reproduction and growth of algae.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects: 1. This invention utilizes a light-enhanced aeration system for the coexistence of sodium manganese ore and algae to degrade manganese and SMZ in surface water. Adding sodium manganese ore at a concentration of 2 g / L to the reactor has a good synergistic removal effect on manganese ions and SMZ in surface water.

[0018] 2. This invention utilizes aeration gas to flush the surface of the ceramic membrane, while simultaneously achieving algal symbiosis through light irradiation. This significantly reduces membrane fouling, extends the membrane's lifespan, and reduces energy consumption.

[0019] 3. This invention determines the optimal dosage of sodium manganese ore and the most suitable aeration rate, achieving efficient synergistic removal of manganese and SMZ.

[0020] 4. This invention utilizes aeration to disperse sodium manganese ore in the reactor, increasing its interaction time and area with the raw water, thereby improving the performance of manganese and SMZ removal. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the device of the present invention.

[0022] Figure 2 This is a schematic diagram of the structure of the ceramic membrane bioreactor of the present invention.

[0023] Figure 3 The chart shows the experimental results of treating SMZ with sodium manganese ore at different concentrations using the device of this invention; the original algae content was 2×10⁻⁶. 5 cell / ml.

[0024] Figure 4 The chart shows the experimental results of manganese removal from sodium manganese ore using the device of the present invention at different concentrations of water.

[0025] Figure 5 This is an experimental flux diagram comparing the present invention with the control group.

[0026] Figure 6 This is the final stable flux diagram for the present invention and the control group.

[0027] Figure 7 The diagram shows the manganese removal effect of the present invention compared to the control group.

[0028] Figure 8 The diagram shows the SMZ removal effect of the present invention compared to the control group.

[0029] in, Figure 5-8 In the study, Birnessite and Light represent a light-enhanced aeration system in which hydrous sodium manganese ore and algae coexist. Control is the blank control group, Birnessite is the group with hydrous sodium manganese ore but no light, and Light is the group with hydrous sodium manganese ore but no light.

[0030] In the picture: 10-Raw water tank; 20-Peristaltic pump; 30-Steady flow tank; 31-Inlet valve; 40-Membrane bioreactor; 41-Tank body; 42-Raw water inlet; 43-Clean water outlet; 45-Ceramic membrane; 46-Water sodium manganese ore; 47-Light source; 50-Aeration strip; 60-Aeration pump; 68-Gas flow meter; 70-Effluent collection tank; 79-Effluent pipe. Detailed Implementation

[0031] The figures are for illustrative purposes only and should not be construed as limiting the invention: To better illustrate this embodiment, some components in the figures may be omitted, enlarged, or reduced, and do not represent the actual product dimensions; it is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the figures. The positional relationships described in the figures are for illustrative purposes only and should not be construed as limiting the invention.

[0032] like Figure 1-2As shown, the device for degrading manganese and SMZ in surface water using a light-enhanced aeration system for the coexistence of sodium manganese ore and algae in this embodiment includes a raw water tank 10, a peristaltic pump 20, a steady-flow water tank 30, a membrane bioreactor 40, an aeration strip 50, an aeration pump 60, and an effluent collection tank 70.

[0033] Specifically, the raw water tank 10 is connected to the steady-flow water tank 30 via a peristaltic pump 20. The peristaltic pump 20 drives the raw water from the raw water tank 10 into the steady-flow water tank 30. The steady-flow water tank 30 is connected to the membrane bioreactor 40 via an inlet valve 31, thereby driving the raw water from the steady-flow water tank 30 into the membrane bioreactor 40 and ensuring a constant liquid level in the membrane bioreactor 40. Aeration strips 50 are installed in the cavity of the membrane bioreactor 40. An aeration pump 60 is connected to the aeration strips 50 via an air pipe. The aeration pump 60 generates continuous and stable bubbles in the water of the membrane bioreactor 40 through the aeration strips 50. A gas flow meter 68 is also installed on the air pipe to stably control the flow rate of the aeration gas.

[0034] The membrane bioreactor 40 includes a tank 41, a raw water inlet 42, a purified water outlet 43, a ceramic membrane 45, a sodium manganese oxide membrane 46, and a light source 47. The raw water inlet 42 is located at the bottom of the tank 41. The steady flow tank 30 is connected to the raw water inlet 42 through the inlet valve 31, allowing raw water to flow into the membrane bioreactor 40 from the bottom, generating an upward water flow.

[0035] The ceramic membrane 45 is vertically installed inside the tank 41 and immersed in the raw water within the tank 41. The interior of the ceramic membrane 45 is a cavity, which serves as the purification zone. The area inside the tank 41 and outside the ceramic membrane 45 is the raw water zone. The purified water outlet 43 is connected to the cavity of the ceramic membrane 45. The effluent collection tank 70 is connected to the purified water outlet 43 of the membrane bioreactor 40 via an effluent pipe 79. The raw water in the raw water zone, after being purified by the ceramic membrane 45, enters the cavity of the ceramic membrane 45 and then flows from the purified water outlet 43 through the effluent pipe 79 to the effluent collection tank 70. Furthermore, the ceramic membrane 45 is located above the aeration strips 50, and the aeration strips 50 drive the water flow to wash the surface of the ceramic membrane 45.

[0036] Sodium manganese ore 46 was dispersed in the raw water area, with an aeration rate of 25 ml / min, corresponding to an aeration intensity of 0.375 m³ / (m²). 2 When the concentration of sodium manganese ore 46 reaches a certain level (h), it can be completely fluidized, as shown in Table 1 below. Influenced by the bubbles generated by the aeration strip 50, the water flows upwards uniformly. During this process, the sodium manganese ore 46 contacts the raw water and adsorbs, oxidizes, and removes manganese and SMZ. Preferably, in this embodiment, the concentration of sodium manganese ore 46 loaded in the membrane bioreactor 40 is 2 g / L.

[0037] 15 0.225 8 Solid-liquid separation 20 0.3 12 Solid-liquid separation 25 0.375 2 fluidized state Table 1. Aeration Volume Test Experiment Table Light source 47 illuminates the tank 41. This light source can be a standard ambient light source; in this embodiment, a power of 2500 Lux is preferred to maintain normal algal cell growth in the reactor. In eutrophic waters, the ubiquitous extracellular organic matter (EOM) of algae is a potential photosensitizer, playing a crucial role in the oxidation of Mn(II). Simultaneously, EOM can be photochemically generated through reactive intermediates (primarily O2). - This accelerates the photodegradation of SMZ. If Mn(II) is also present in the water, this process is further enhanced by the photogeneration of active Mn(III). Water-sodium manganese ore 46 contains a large amount of active Mn(III). In this embodiment, the lamp source 47 is controlled to illuminate for 12 hours and then turn off for 12 hours to ensure algal reproduction and growth.

[0038] In the initial stage of the experiment, a syringe plunger is used to connect the outlet pipe 79. The outlet pipe 79 connects to the outlet of the effluent collection tank 70 (hereinafter referred to as the collection port) to the purified water outlet 43 located within the membrane bioreactor 40, creating a one-meter height difference. The syringe plunger is used to pump water from the membrane bioreactor 40 to the collection port. Subsequently, water from the membrane bioreactor 40 continuously enters the cavity of the ceramic membrane 45 under the influence of gravity (one meter head) and flows out through the purified water outlet 43. Finally, it flows through the outlet pipe 79 into the effluent collection tank 70. Due to the principle of communicating vessels, the steady-flow tank 30 maintains a constant liquid level in the membrane bioreactor 40.

[0039] The method and principle of the membrane filtration device for degrading manganese and SMZ in surface water using the light-enhanced aeration system for coexisting sodium manganese ore and algae in this embodiment are as follows: The collected surface water is stored in the raw water tank 10. Under the transport of the peristaltic pump 20, the raw water flows upwards from the raw water inlet 42 into the membrane bioreactor 40. During this process, the aeration pump 60 delivers gas to the aeration strips 50 through the air pipe, and the gas flow meter 68 controls the aeration rate at 25 ml / min, with an aeration intensity of 0.375 m³ / (m²). 2 (·h), light source 47 provides 12 hours of illumination and is turned off after 12 hours to allow algae to reproduce and grow.

[0040] During this process, the raw water in the membrane bioreactor 40 comes into full contact with the fluidized sodium manganese ore 46 for oxidation, thereby removing manganese. Simultaneously, algal extracellular organic matter (EOM), acting as a natural photosensitizer, undergoes electron transitions under light irradiation, prompting dissolved oxygen to accept electrons and generate O2. - Furthermore, reducing substances released by algal photosynthesis (such as NAD(P)H) may promote the metabolic activity of symbiotic bacteria, causing "electron leakage" in the electron transport chain and further exacerbating O2. -The generation of endogenous free radicals. These endogenous free radicals can not only directly oxidize Mn(II) to higher valence manganese oxides, but also attack the molecular structure of SMZ, achieving synergistic degradation of pollutants; in addition, EOM will complex with Mn(III), and this complex can directly attack and degrade SMZ. Algae in the raw water are trapped on the surface of the ceramic membrane. Under the action of gravity, water in the membrane bioreactor 40 enters the cavity inside the ceramic membrane 45 through the surface of the ceramic membrane, and flows into the effluent collection tank 70 from the effluent pipe 79. The effluent collection tank 70 flows out naturally by gravity flow (atmospheric pressure).

[0041] The sodium manganese ore loaded within the membrane bioreactor not only serves as a primary carrier for biofilms and microorganisms, but also as an autocatalytic oxide of manganese ions in water and provides a large amount of active Mn(III) for the degradation of SMZ. The applicant found that the concentration of sodium manganese ore has a positive correlation with the effectiveness of manganese and SMZ removal, as shown in the corresponding experimental results. Figure 3 and Figure 4 As shown, in the concentration range of 0.5-3.0 g / L, the removal efficiency of manganese and SMZ increased with the increase of sodium manganese ore concentration; when the concentration reached 4.0 g / L, the SMZ removal efficiency no longer improved, almost the same as that at the concentration of 2.0-3.0 g / L, while the manganese removal efficiency decreased, even lower than that at the concentration of 2.0-3.0 g / L, possibly due to insufficient contact caused by agglomeration.

[0042] Therefore, it can be seen that when the concentration of sodium manganese ore is 2.0-3.0 g / L, it has a good synergistic removal effect on manganese ions and SMZ in surface water. Considering the economic efficiency, we selected sodium manganese ore with a concentration of 2 g / L.

[0043] Through the above treatment, the raw water had a manganese ion concentration of 0.98-1.10 mg / L and a SMZ concentration of 390-410 μg / L. After treatment by the membrane bioreactor, the effluent manganese ion concentration was below 0.1 mg / L, meeting the water quality standards of the "Standards for Drinking Water Quality" (GB / T 5750-2006), and SMZ was not detected. The treated effluent can be used in decentralized drinking water facilities, which is of practical significance.

[0044] In addition, after gas aeration and biological action by bacteria and algae, the fouled ceramic membrane effectively controlled and mitigated membrane fouling. Under the action pressure of 1m water head, the membrane bioreactor could operate at a constant flux of 29LMH, improving water production efficiency.

[0045] Therefore, this embodiment can treat surface water including manganese ions and SMZ, and the concentration of manganese ions treated is twice that of the manganese ion concentration in the prior art patent application CN117985846A. The device and method of this embodiment have practical significance.

[0046] To assess the processing effect of this embodiment, a control group was set up for comparison, such as... Figure 5-8 As shown, Control is the blank control group, Birnessite is the light-free group with hydrated sodium manganese ore, Light is the light-bearing group with anhydrous sodium manganese ore, and Birnessite and Light is a light-enhanced aeration system for the coexistence of hydrated sodium manganese ore and algae. The apparatus used in the blank control group, the light-free group with hydrated sodium manganese ore, and the light-bearing group with anhydrous sodium manganese ore is the same as in this embodiment, the difference being whether hydrated sodium manganese ore is added and whether a light source is provided. The parameters of the hydrated sodium manganese ore added to the light-free group are the same as those in this embodiment, while the parameters of the light source in the light-bearing group with anhydrous sodium manganese ore are the same as those in this embodiment.

[0047] from Figure 5 and Figure 6 As can be seen, after the experiment began, the membrane flux of each group decreased rapidly within 0–3 days. This was mainly attributed to the rapid adsorption and deposition of algal cells, extracellular organic matter (EOM), and microorganisms on the membrane surface in the early stages, forming an initial fouling layer, leading to membrane pore blockage and flux decline. During days 3–12, the membrane flux fluctuated significantly, exhibiting a "high one day, low the next" characteristic. This phenomenon may be closely related to the dynamic adaptation process of the algal and bacterial communities in the system: the diurnal variation of algal photosynthetic activity under light conditions affects the secretion of its metabolites (such as polysaccharides and proteins); simultaneously, aeration has a certain physical flushing effect on the fouling layer on the membrane surface, but the periodic growth of microorganisms, the release and degradation of EPS, and the formation and shedding of biofilms may have jointly led to flux instability. In the following 12–28 days, the membrane flux entered a slow decline phase, indicating that the system gradually stabilized, the fouling layer structure gradually became denser, and the membrane resistance continued to accumulate but remained within a controllable range. By days 28–42, the membrane flux of each group had basically reached a stable state. Stable membrane flux is shown in [the table below]. Figure 6 Notably, the stable flux of the illuminated groups (3# and 4#) was significantly higher than that of the unilluminated groups (1# and 2#). Specifically, 4# (with light and sodium manganese ore) had the highest flux (29.33 LMH), followed by 3# (22.47 LMH), while the unilluminated groups only had 17.54 LMH (2#) and 13.80 LMH (1#), respectively. This difference indicates that light plays a positive role in maintaining the membrane flux of the system. Possible mechanisms include: light promotes algal photosynthesis and metabolic activity, enhances dissolved oxygen levels within the system, which is beneficial for aerobic microbial metabolism and organic matter degradation, reducing organic pollution; light may promote EOM conversion through photocatalysis or photosensitization, reducing the accumulation of viscous macromolecules on the membrane surface; and the aggregates formed by algae and microorganisms in the illuminated groups have a more porous structure (as shown in subsequent particle size analysis), mitigating membrane pore blockage.

[0048] from Figure 7and Figure 8 It is evident that the efficient removal of Mn²⁺ primarily relies on the presence of manganese hydroxide. Both HF-GDCM 2 (with manganese hydroxide, no light) and HF-GDCM 4 (with manganese hydroxide, with light) exhibited rapid and sustained removal capabilities for Mn²⁺, attributed to the strong adsorption and surface oxidation effects of manganese hydroxide on Mn²⁺. Notably, HF-GDCM 4 (with manganese hydroxide + light) showed superior removal efficiency and rate compared to HF-GDCM 2, indicating that light further enhances this process. HF-GDCM 1 (without manganese hydroxide, no light) had a lower initial manganese content compared to HF-GDCM 4 (without manganese hydroxide, with light), possibly due to the complexation of EOM released by algal death with divalent manganese ions in the water under dark conditions, resulting in a more significant manganese treatment effect in the initial stages of the experiment. The degradation mechanism of SMZ is more complex, primarily resulting from advanced oxidation processes. HF-GDCM 1 (no light, anhydrous sodium manganese ore) showed the lowest removal rate, indicating that simple biodegradation or physical adsorption filtration has limited effect. HF-GDCM 3 (with light, anhydrous sodium manganese ore) exhibited significant SMZ removal, confirming that in the presence of algae, light itself can effectively degrade SMZ by stimulating algal EOM to generate superoxide radicals. However, the HF-GDCM 4 group (with sodium manganese ore + light) showed the fastest and most thorough SMZ removal, strongly demonstrating a significant synergistic effect between sodium manganese ore and the light / algae system. Sodium manganese ore not only may itself catalyze the degradation of SMZ, but more importantly, it is likely to act as a highly efficient catalyst, significantly enhancing the generation and utilization efficiency of reactive oxygen species produced by the light / algae system, thereby achieving efficient oxidative decomposition of SMZ.

[0049] Compared with existing technologies, this invention introduces sodium manganese hydrate into a solid-bed ceramic membrane bioreactor. The raw water contacts and oxidizes the sodium manganese hydrate to remove manganese, and aeration further disperses the sodium manganese hydrate adhering to the ceramic membrane and deposited at the bottom of the membrane bioreactor. The aerated sodium manganese hydrate has a wider dispersion range, increasing the contact time between the hydrate and the raw water, thereby improving manganese removal performance and ultimately improving the quality of the effluent.

[0050] Furthermore, this invention controls the aeration rate at 25 ml / min. During aeration, the airflow causes friction between the particles in the reactor and the membrane surface, effectively flushing away pollutants from the membrane surface. Simultaneously, light significantly promotes bacterial and algal aggregation, forming larger bioflocs, which helps improve removal efficiency. It also forms a loose filter cake layer on the ultrafiltration membrane, delaying membrane pore clogging and thus effectively controlling membrane fouling.

[0051] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection claimed by the present invention.

Claims

1. A device for degrading manganese and SMZ in surface water using a light-enhanced aeration system where sodium manganese ore and algae coexist, characterized in that, The system includes a raw water tank, a membrane bioreactor (MBR), aeration strips, an aeration pump, and an effluent collection tank. The raw water tank supplies raw water to the MBR. The MBR includes a tank body, a ceramic membrane, sodium manganese ore, and a light source. The aeration strips are located within the tank body, and the aeration pump is connected to the aeration strips via an air pipe. The ceramic membrane is vertically positioned within the tank body above the aeration strips. The interior of the ceramic membrane is a cavity, serving as the purification zone, while the exterior is the raw water zone. The sodium manganese ore is dispersed within the raw water zone. The light source illuminates the tank body. The bubbles generated by the aeration strips drive the water upwards, thereby bringing the sodium manganese ore into contact with the raw water for adsorption and oxidation. Combined with the illumination for manganese and SMZ removal, the purified raw water enters the cavity of the ceramic membrane, which is connected to the effluent collection tank. The concentration of sodium manganese ore loaded in the MBR is 2 g / L. The aeration rate of the aeration strips is 25 ml / min, corresponding to an aeration intensity of 0.375 m³ / min. 3 / m 2 h, so that the sodium manganese ore is completely fluidized.

2. The apparatus for degrading manganese and SMZ in surface water using a light-enhanced aeration system for the coexistence of sodium manganese ore and algae, as described in claim 1, is characterized in that... It also includes a gas flow meter, which is installed on the gas pipe.

3. The apparatus for degrading manganese and SMZ in surface water using a light-enhanced aeration system for the coexistence of sodium manganese ore and algae, as described in claim 1, is characterized in that... It also includes a peristaltic pump, a steady-flow tank, and an inlet valve. The raw water tank is connected to the steady-flow tank through the peristaltic pump, and the steady-flow tank is connected to the membrane bioreactor through the inlet valve.

4. The apparatus for degrading manganese and SMZ in surface water using a light-enhanced aeration system for the coexistence of sodium manganese ore and algae, as described in claim 3, is characterized in that... The membrane bioreactor also includes a raw water inlet and a purified water outlet. The raw water inlet is located at the bottom of the tank, and the steady flow tank is connected to the raw water inlet through the inlet valve. The purified water outlet is connected to the cavity of the ceramic membrane, and the effluent collection tank is connected to the purified water outlet through the effluent pipe.

5. A method for degrading manganese and SMZ in surface water using a light-enhanced aeration system where sodium manganese ore and algae coexist, characterized in that... An apparatus for degrading manganese and SMZ in surface water using the light-enhanced aeration fluidized bed of sodium manganese ore and algae coexistence system as described in any one of claims 1-4 is provided. The method is as follows: raw water is controlled to flow upward into the membrane bioreactor; the aeration pump delivers gas to the aeration strips; and the lamp source is activated to illuminate the tank. The bubbles generated by the aeration strips drive the water flow upward, thereby causing the sodium manganese ore to come into contact with the raw water and be adsorbed and oxidized. Combined with the lamp illumination to remove manganese and SMZ, the purified raw water enters the cavity of the ceramic membrane and flows to the effluent collection tank.

6. The method for degrading manganese and SMZ in surface water using the light-enhanced aeration flow-mode water sodium manganese ore and algal coexistence system as described in claim 5, characterized in that... The aeration rate is 25 ml / min, corresponding to an aeration intensity of 0.375 m. 3 / m 2 ·h.

7. The method for degrading manganese and SMZ in surface water using the light-enhanced aeration system for the coexistence of sodium manganese ore and algae as described in claim 5, characterized in that... The concentration of sodium manganese ore loaded in the membrane bioreactor is 2 g / L.

8. The method for degrading manganese and SMZ in surface water using the light-enhanced aeration system for the coexistence of sodium manganese ore and algae as described in claim 5, characterized in that... The light source is controlled to illuminate for 12 hours and turn off for 12 hours.

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