Negative carbon plate tower type stainless steel membrane bacteria-algae water treater

Abstract

The invention discloses a negative carbon plate tower type stainless steel membrane bacteria and algae water treater which comprises a solar photovoltaic cell assembly, a circuit control device, an upper water tank, a three-dimensional plate tower type algae pool, an LED light-emitting plate assembly, a stainless steel membrane filtering assembly, a shading algae sedimentation pool, a peristaltic pump, a dredge pump and a water outlet pipe. The three-dimensional plate-type tower-shaped algae pool is arranged above the ground surface and below the upper water tank, and the upper water tank is used for receiving sewage to be treated and enabling the sewage to flow into the three-dimensional plate-type tower-shaped algae pool through gravity; the shading algae sedimentation tank is arranged to be of a buried bucket-shaped structure by utilizing the characteristic that algae naturally settles in a shading environment, and the stainless steel membrane filtering assembly is arranged at the upper part of the shading algae sedimentation tank; the method not only improves the treatment efficiency and quality, but also realizes negative emission of carbon dioxide, provides a new thought for benefit increase of sewage technical treatment in the carbon economy era, and makes a contribution to relieving global climate warming.

Description

Technical Field

[0001] The present invention relates to the technical field of decentralized sewage and farmland sewage treatment, specifically a negative carbon plate tower type water treatment device based on bacteria-algae symbiosis and stainless steel membrane filtration technology, which is suitable for the efficient purification and resource utilization of low-concentration sewage. Background Art

[0002] With the acceleration of global population growth, industrialization, and urbanization, the rate of managed treatment of industrial and domestic wastewater is increasing. However, the traditional physical, chemical, and biological treatment technologies currently used in large-scale wastewater treatment plants are often associated with high energy consumption, low efficiency, and secondary pollution. Low-concentration wastewater, particularly wastewater treatment plant tailwater, presents a major challenge in the current wastewater treatment industry. The unique composition of this type of wastewater presents significant challenges to treatment processes. Its relatively low carbon content and high nitrogen and phosphorus contents result in a severely imbalanced carbon-nitrogen ratio, making traditional biological treatment methods ineffective.

[0003] For example, the patent application number CN202410195491.3 discloses a bacteria-algae-grass symbiotic purification system for agricultural non-point source pollution control, which includes a pool body, which is a shallow water pool body or a deep water pool body. The shallow water pool body is built based on ditches, and the deep water pool body is built based on ponds. When working, aquatic plants are planted in the pool body, which provides a better living space for bacteria and algae, and at the same time assimilates and absorbs part of the nitrogen and phosphorus; the hydraulic propulsion device is started to realize the flow of water, create a favorable environment for the proliferation of bacteria and algae, increase the number of bacteria and algae, make them better combined with water pollution, and deepen the biochemical reaction rate. However, it relies on natural light and lacks the ability to accurately control, and the system stability is insufficient. In addition, the problems of low algae-water separation efficiency and serious membrane pollution in traditional processes need to be solved urgently. Summary of the Invention

[0004] In response to the problems existing in the existing technology, the present invention provides a negative carbon plate tower stainless steel membrane bacteria-algae water treatment device with zero external energy consumption, strong pollution resistance and precise control, aiming to improve the efficiency of low-concentration sewage treatment and simultaneously achieve negative carbon emissions and algae resource recovery.

[0005] The technical solution of the present invention is: a negative carbon plate tower stainless steel membrane bacteria algae water processor, comprising a solar photovoltaic cell assembly, a circuit control device, an upper water tank, a three-dimensional plate tower algae pool, an LED light-emitting panel assembly, a stainless steel membrane filtration assembly, a light-shielding algae sedimentation tank, a peristaltic pump, a sludge suction pump and a water outlet pipe;

[0006] The solar photovoltaic cell assembly is connected to the circuit control device, peristaltic pump, LED light-emitting panel assembly and sludge suction pump to provide clean energy for the water processor, thereby achieving zero external energy consumption operation of the entire system;

[0007] The LED light-emitting panel assembly includes a plurality of color-adjustable U-shaped LED lamp tubes;

[0008] The three-dimensional plate tower algae pond is arranged above the ground surface and below the upper water tank, and the upper water tank is used to receive the sewage to be treated and flow into the three-dimensional plate tower algae pond by gravity;

[0009] The three-dimensional plate-shaped algae pond comprises multiple layers of vertically stacked rectangular thin-plate trays made of transparent engineering plastic. Each layer of these trays is spaced apart from the adjustable color spectrum U-shaped LED light tubes, and each layer is inoculated with a high concentration of algae, helping the algae absorb light energy 360 degrees for photosynthesis. The U-shaped LED tubes, distributed between the thin-plate trays, can adjust the spectrum and the ratio of red and blue light to suit the algae's growth characteristics. The illumination period is 24 hours to maintain continuous photosynthesis within the tower. The U-shaped layout provides uniform illumination for the algae.

[0010] A tray water inlet is provided at the top of one end of each layer of rectangular thin trays, and a tray water outlet is provided at the bottom of the other end. The tray water inlet of this layer of rectangular thin trays is connected to the tray water outlet of the upper layer of rectangular thin trays via a pipe, and the tray water outlet of this layer of rectangular thin trays is connected to the tray water inlet of the lower layer of rectangular thin trays via a pipe; the tray water inlet of the topmost rectangular thin tray is connected to the water outlet of the upper water tank via a pipe, and the tray water outlet of the bottommost rectangular thin tray is connected to the water inlet of the light-shielding algae sedimentation tank via a pipe, forming an S-shaped flow path that can realize liquid gravity flow;

[0011] The light-shielding algae sedimentation tank is configured as an underground bucket-shaped structure by utilizing the natural sedimentation characteristics of algae in a light-shielding environment. The stainless steel membrane filter assembly is disposed on the upper portion of the light-shielding algae sedimentation tank. The liquid inlet of the peristaltic pump is connected to the liquid outlet of the stainless steel membrane filter assembly, and the liquid outlet of the peristaltic pump is connected to the outlet pipe. After the initially purified water flows through the stainless steel membrane filter assembly, the filter membrane intercepts the algae and suspended matter, and then the water is sucked out of the water through the peristaltic pump to the outlet pipe.

[0012] The lower part of the light-shielding algae sedimentation tank is a bucket-shaped tank, and the sludge suction pump is arranged at the bottom of the bucket-shaped tank and can suck out the concentrated algae slurry.

[0013] Furthermore, it also includes an electromagnetic diverter, an algae return pipe, a mud delivery pipe and a mud discharge pipe;

[0014] The outlet of the mud suction pump is connected to the inlet of the mud delivery pipe, the outlet of the mud delivery pipe is connected to the inlet of the electromagnetic diverter, the first outlet of the electromagnetic diverter is connected to the inlet of the top-layer rectangular thin disk tower plate through the algae return pipe, and the second outlet of the electromagnetic diverter is connected to the inlet of the mud discharge pipe.

[0015] Furthermore, the inlet of the electromagnetic diverter is connected to a liquid separation hopper made of magnetic material through a hose, an electromagnet is attached to the side wall of the electromagnetic diverter, and a funnel-shaped reflux port and a discharge port are arranged side by side at the bottom of the electromagnetic diverter;

[0016] The reflux port is connected to the algae reflux pipe, and the discharge port is connected to the mud discharge pipe; in a natural state, the liquid separation bucket naturally droops, and the algae liquid flows into the reflux pipe after entering the reflux port; after the electromagnet is turned on to adsorb and tilt the liquid separation bucket made of magnetic material, the algae liquid enters the discharge port and flows into the mud discharge pipe.

[0017] Furthermore, the stainless steel membrane filtration assembly includes a plurality of stainless steel tubes made of stainless steel microfiltration membranes, and the average pore size of the stainless steel microfiltration membranes is 0.25 microns.

[0018] Furthermore, the algae are Scenedesmus and Chlorella.

[0019] Furthermore, a water level control weir with a weir height adjustment plate is installed at the water outlet of the rectangular thin-plate tray. The height of the water level control weir is adjustable between 6 and 10 cm. The water level within the tray is adjusted by the weir height according to the designed hydraulic retention time. The water depth generally does not exceed 10 cm to ensure sufficient carbon dioxide absorption by the algae.

[0020] Furthermore, a silicone algae scraper brush is provided in each layer of the rectangular thin plate tower plate, and the two end surfaces of the silicone algae scraper brush are in contact with the inner side surfaces of the two long side walls of the rectangular thin plate tower plate. The bottom surface of the silicone algae scraper brush is designed to be wavy, which is used to scrape off most of the attached algae, while retaining a small amount of attached algae at the bottom of the rectangular thin plate tower plate to maintain a balance in the concentration of attached algae and suspended algae.

[0021] The multiple silicone algae scraping brushes can be controlled manually by simply moving them by hand. They can also be controlled in electric mode, where the motor drives the gears and chains to push the multiple silicone algae scraping brushes from top to bottom to move simultaneously.

[0022] Furthermore, the solar photovoltaic cell assembly is composed of several solar crystalline silicon panels, an inverter and a battery. The solar crystalline silicon panels are installed on the top of the water treatment device through adjustable columns or directly on the roof of a building, and are connected to the inverter through wires; the inverter is connected to the battery, and the inverter converts the direct current generated by solar energy through the solar crystalline silicon panels into alternating current; the battery is connected to the circuit control device.

[0023] Furthermore, a detachable stainless steel grille is provided in the middle of the light-shielding algae sedimentation tank, and the stainless steel membrane filtration assembly is placed above the grille.

[0024] Furthermore, the stainless steel membrane filtration module adopts intermittent operation, with 9 minutes of filtration and 1 minute of backwashing. The membrane material has both high mechanical strength and anti-fouling properties.

[0025] In this application, multi-layer transparent engineering plastic tower plates are stacked vertically, and highly active algae species such as Scenedesmus and Chlorella are inoculated in the tower plates. 360° uniform lighting is provided by adjustable spectrum U-shaped LED lamps (the ratio of red light to blue light is adjustable) to promote algae photosynthesis and carbon fixation; a water level control weir (water depth ≤ 10 cm) is set at the water outlet of the tower plate, and a wavy silicone algae scraper brush is configured at the bottom to automatically scrape off excessively attached algae to maintain a balanced algae concentration.

[0026] The light-shading algae sedimentation tank is an underground bucket-type structure with a removable stainless steel grid in the middle of the tank and a sludge suction pump at the bottom. The light-shading sedimentation characteristics of the algae are used to achieve efficient solid-liquid separation, and the electromagnetic separator is used to regulate the algae slurry reflux ratio (reflux to the first tower plate) and the sludge discharge ratio to achieve algae-water separation, further improving the removal rate of pollutants.

[0027] In-ground bucket-shaped algae sedimentation tanks utilize algae's natural tendency to settle in darkness, concentrating them at the bottom. After the algae is extracted using a sludge pump, an electromagnetic diverter can be used to set the system to full or partial reflux mode. The reflux ratio is typically set to 4:1 to ensure the appropriate amount of sludge is discharged and the overall algae concentration within the system remains stable.

[0028] After the algae are concentrated and discharged, they can be subsequently processed into algae powder for use in high-quality feed processing and protein extraction.

[0029] The thin-disk algae plate tower can be operated in two modes, indoor mode and outdoor mode. Both modes can achieve zero carbon emissions throughout the entire operating cycle. The indoor mode uses a 24-hour LED spectrum-adjustable artificial light source. The solar photovoltaic panels are installed on the roof of the structure to provide it with energy. The outdoor mode means that the solar photovoltaic panels are supported at their four corners by vertical poles, forming the roof structure of the device, using natural light during the day and artificial light at night. In addition to providing power, the solar photovoltaic panels can also serve as a shelter from rain during rainfall. This prevents rainwater from bringing impact loads to the thin-disk algae plate tower.

[0030] To ensure a balanced algae population structure and stable activity, the thin-plate algae tower is inoculated with a mixed algae population, primarily Scenedesmus and Chlorella from the Chlorophyta. Cyanobacteria may be added to enhance denitrification capacity. Algae naturally tend to adhere to the walls and bottom of the thin plates. Long-term attachment can affect algae activity and block external light sources. A soft silicone algae scraper installed within the tray regularly removes some of the attached algae, while retaining approximately a quarter to maintain a balanced population.

[0031] The water depth of each plate in the thin-disk algae tray is controlled at approximately 10 cm to ensure that the top light source can still reach the bottom of the pond even when the algae concentration is high. The spectrum of the LED artificial light source is adjusted according to the algae's habits. Scenedesmus and Chlorella (Chlorophyta) preferentially utilize red and blue light. A slightly higher red light ratio (e.g., 7:3) optimizes growth. Cyanobacteria (such as Spirulina) respond more strongly to blue light. When enhanced denitrification is required, the blue light ratio can be increased to enhance nitrogen fixation.

[0032] The membrane assembly is a stainless steel microfiltration membrane assembly. It achieves an algae-water separation rate exceeding 95%, far exceeding that of other processes such as mesh separation and flocculation flotation. The stainless steel membrane is durable, overcoming the mechanical weakness of organic membranes, which are prone to damage. Furthermore, at the same pressure, the filtration flux of the stainless steel membrane is dozens of times higher than that of organic microfiltration membranes. The number of filter modules can be freely adjusted, making replacement and cleaning easy.

[0033] Compared with the prior art, the present invention has at least one of the following beneficial effects:

[0034] 1. The present invention provides a "negative carbon" decentralized sewage deep purification technology, which not only improves treatment efficiency and quality, but also achieves negative carbon dioxide emissions. It provides a new approach to increasing the benefits of sewage treatment technology in the carbon economy era and contributes to alleviating global warming.

[0035] 2. Stainless steel membrane components exhibit excellent anti-pollution properties and can maintain stable performance even when treating highly polluted water bodies, thereby extending the service life of the equipment and providing a guarantee for the water output rate to meet the standards for algae water treatment technology.

[0036] 3. The entire device provided by the present invention can realize automatic operation, does not require on-duty supervision, and is simple to maintain.

[0037] 4. The number of filter module groups can be freely set, which is convenient for replacement and cleaning.

[0038] 5. Thin plate towers are stacked vertically, which greatly saves land and infrastructure costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is a structural diagram of a negative carbon plate tower stainless steel membrane bacteria-algae water processor;

[0040] Figure 2 This is a cross-sectional view of the interior of a rectangular thin-plate tray (with a focus on the silicone algae scraper);

[0041] Figure 3 This is a schematic diagram of the structure of an underground light-shielding algae sedimentation tank;

[0042] Figure 4 Schematic diagram of the membrane module structure;

[0043] Figure 5 It is a working diagram of the electromagnetic shunt when the electromagnet is closed;

[0044] Figure 6 Schematic diagram of the electromagnetic shunt working when the electromagnet is turned on.

[0045] In the figure: 1 is the upper water tank, 2 is the three-dimensional plate tower type algae pool, 3 is the LED light-emitting panel assembly, 4 is the stainless steel membrane filtration assembly, 5 is the light-shielding algae sedimentation tank, 6 is the algae return pipe, 7 is the silicone algae scraper brush, 8 is the water level control weir, 9 is the electromagnetic diverter, 10 is the mud discharge pipe, 11 is the peristaltic pump, 12 is the water outlet pipe, 13 is the grille, 14 is the mud suction pump, 15 is the mud delivery pipe, 16 is, 17 is the adjustable column. DETAILED DESCRIPTION

[0046] The present invention will be further described below with reference to the accompanying drawings.

[0047] like Figure 1-4 As shown, a negative carbon plate tower type stainless steel membrane bacteria algae water treatment device is characterized by: including a solar photovoltaic cell assembly, a circuit control device, an upper water tank 1, a three-dimensional plate tower type algae pool 2, an LED light-emitting panel assembly 3, a stainless steel membrane filtration assembly 4, a light-shielding algae sedimentation tank 5, a peristaltic pump 11, a mud suction pump 14, an outlet pipe 12, an electromagnetic diverter 9, an algae return pipe 6, a mud delivery pipe 15 and a mud discharge pipe 10.

[0048] The solar photovoltaic cell assembly is connected to the circuit control device, peristaltic pump 11, LED light panel assembly 3, and sludge suction pump 14, providing clean energy for the water treatment system and achieving zero external energy consumption for the entire system. Specifically, the solar photovoltaic cell assembly is composed of several solar crystalline silicon panels 16, an inverter, and a battery. The solar crystalline silicon panels 16 are mounted on the top of the water treatment device or directly on the roof of a building via adjustable columns 17 and are connected to the inverter via wires. The inverter is connected to the battery, which converts the direct current generated by solar energy through the solar crystalline silicon panels 16 into alternating current. The battery is connected to the circuit control device.

[0049] The LED light-emitting panel assembly 3 includes a plurality of color spectrum adjustable U-shaped LED lamp tubes.

[0050] The three-dimensional plate tower-shaped algae pool 2 is arranged above the ground surface and below the upper water tank 1. The upper water tank 1 is used to receive sewage to be treated and flow into the three-dimensional plate tower-shaped algae pool 2 by gravity.

[0051] The three-dimensional plate tower algae pool 2 includes multiple layers of vertically stacked rectangular thin-plate trays, which are made of transparent engineering plastics. Each layer of rectangular thin-plate trays is spaced apart from the adjustable color spectrum U-shaped LED lamp tubes, and each layer of rectangular thin-plate trays is inoculated with high-concentration algae, mainly Scenedesmus and Chlorella of the Chlorophyta. This helps algae absorb light energy at 360 degrees for photosynthesis. The U-shaped LED lamp tubes are distributed between the thin-plate trays, and can adjust the spectrum and the ratio of red light to blue light according to the characteristics of the algae to suit its growth. The illumination time is 24 hours to maintain continuous photosynthesis of the algae in the tower. The U-shaped layout provides uniform illumination for the algae.

[0052] Each layer of rectangular thin trays has a tray inlet at the top of one end and a tray outlet at the bottom of the other end. The tray inlet of this layer of rectangular thin trays is connected to the tray outlet of the upper layer of rectangular thin trays via a pipe, and the tray outlet of this layer of rectangular thin trays is connected to the tray inlet of the lower layer of rectangular thin trays via a pipe. The tray inlet of the topmost rectangular thin tray is connected to the outlet of the upper water tank 1 via a pipe, and the tray outlet of the bottommost rectangular thin tray is connected to the inlet of the light-shielding algae sedimentation tank 5 via a pipe, forming an S-shaped flow path that enables liquid gravity flow.

[0053] Preferably, a water level control weir 8 with a weir height adjustment plate is installed at the water outlet of the rectangular thin tray. The height of the water level control weir 8 is adjustable between 6 and 10 cm. The water level within the tray can be adjusted by adjusting the weir height according to the designed hydraulic retention time. The water depth generally does not exceed 10 cm to ensure sufficient carbon dioxide absorption by the algae.

[0054] like Figure 2 As shown, each rectangular thin tray is equipped with a silicone algae scraper 7. The two end faces of the silicone algae scraper 7 fit into the inner side surfaces of the two long side walls of the rectangular thin tray. The bottom surface of the silicone algae scraper 7 has a wavy design, which is used to scrape away most of the attached algae while retaining a small amount of attached algae at the bottom of the rectangular thin tray to maintain a balance between the attached and suspended algae concentrations. The silicone algae scrapers can be manually controlled by simply moving them by hand. Alternatively, they can be electrically controlled, with a motor driving gears and chains to push the multiple silicone algae scrapers from top to bottom, moving them simultaneously.

[0055] like Figure 3As shown, the light-shielding algae sedimentation tank 5 is set as an underground bucket-shaped structure by utilizing the natural sedimentation characteristics of algae in a light-shielding environment. The stainless steel membrane filter assembly 4 is set on the upper part of the light-shielding algae sedimentation tank 5. The liquid inlet of the peristaltic pump 11 is connected to the liquid outlet of the stainless steel membrane filter assembly 4, and the liquid outlet of the peristaltic pump 11 is connected to the outlet pipe 12. After the initially purified water flows through the stainless steel membrane filter assembly, the filter membrane intercepts the algae and suspended matter and then the water is sucked out of the outlet pipe through the peristaltic pump. Specifically, as Figure 4 As shown, the stainless steel membrane filtration assembly 4 comprises multiple stainless steel tubes made of stainless steel microfiltration membranes with an average pore size of 0.25 microns. The stainless steel membrane filtration assembly 4 operates intermittently, with a 9-minute filtration cycle and a 1-minute backwash cycle. The membrane material combines high mechanical strength with high contamination resistance.

[0056] Preferably, a detachable stainless steel grille 13 is provided in the middle of the light-shielding algae sedimentation tank 5 , and the stainless steel membrane filtration assembly 4 is placed above the grille 13 .

[0057] The lower portion of the light-shielding algae sedimentation tank 5 is a bucket-shaped tank. The sludge suction pump 14 is disposed at the bottom of the bucket-shaped tank and is capable of sucking out the concentrated algae slurry. The outlet of the sludge suction pump 14 is connected to the inlet of the sludge delivery pipe 15, and the outlet of the sludge delivery pipe 15 is connected to the inlet of the electromagnetic diverter 9. The first outlet of the electromagnetic diverter 9 is connected to the inlet of the topmost rectangular thin disk tray through the algae return pipe 6, and the second outlet of the electromagnetic diverter 9 is connected to the inlet of the sludge discharge pipe 10.

[0058] like Figure 5 、 6 As shown, the inlet of the electromagnetic diverter 9 is connected to a liquid separator hopper made of magnetic material via a flexible hose. Electromagnets are attached to the sidewalls of the electromagnetic diverter 9. A funnel-shaped return port and discharge port are positioned side by side at the bottom of the electromagnetic diverter 9. The return port connects to the algae return pipe 6, and the discharge port connects to the mud discharge pipe 10. In its natural state, the liquid separator hopper naturally droops, and the algae liquid enters the return port and flows into the return pipe. When the electromagnet is turned on, it tilts the magnetic liquid separator hopper, allowing the algae liquid to enter the discharge port and flow into the mud discharge pipe.

[0059] Preferably, the thin-disk algae plate tower can be operated in two modes, indoor mode and outdoor mode. Both modes can achieve zero carbon emissions throughout the entire operating cycle. The indoor mode uses a 24-hour LED adjustable spectrum artificial light source. The solar photovoltaic panels are installed on the roof of the structure to provide it with energy. The outdoor mode means that the solar photovoltaic panels are supported at their four corners by vertical poles to form the roof structure of the device, using natural light during the day and artificial light at night. In addition to providing power, the solar photovoltaic panels can also serve as a rain shelter during rainfall. This is to prevent rainwater from bringing impact loads to the thin-disk algae plate tower.

[0060] The negative carbon plate tower stainless steel membrane algae water treatment process includes the following steps:

[0061] Step S1: The sewage enters the thin-plate algae plate tower through the upper water tank. The algae in the multiple plates absorb dioxygen through efficient photosynthesis and release oxygen to supply aerobic microorganisms in the tower, while decomposing and removing pollutants in the sewage.

[0062] Step S2: The preliminarily purified water flows through the stainless steel membrane filter assembly. The filter membrane intercepts algae and suspended matter. The effluent meets the surface water standard and can be discharged directly.

[0063] Step S3: The concentrated algae mixture enters the light-shielding sedimentation tank, and the concentrated algae slurry is refluxed to the top tray or sludge discharge according to the reflux ratio.

[0064] Example 1

[0065] like Figure 1 As shown in the figure, the sewage to be treated is stored in the upper water tank and flows into the plate tower composed of multiple transparent plates by gravity. Each plate is inoculated with Scenedesmus (concentration ≥ 5×10 6 cells / mL). LED tubes provide 24-hour illumination at a red:blue ratio of 7:3. Algae scrapers automatically scrape the algae film off the tower walls every hour. The treated water is filtered through a stainless steel membrane assembly (upstream pore size 50 μm, downstream pore size 5 μm), reducing the COD to below 20 mg / L. The algae slurry in the sedimentation tank is returned to the tower plates through a reflux pipe at a 4:1 ratio. The remaining algae sludge discharged has a moisture content of approximately 80% and can be directly used for biogas fermentation.

[0066] Example 2

[0067] To address high-nitrogen and phosphorus-rich wastewater, the tower plates are inoculated with cyanobacteria, denitrifying bacteria, and phosphate-accumulating bacteria. The LED spectrum is adjusted to a red:blue ratio of 6:4 to enhance algae denitrification and phosphorus removal. After treatment, the effluent has total nitrogen levels below 5 mg / L and total phosphorus below 0.5 mg / L, meeting agricultural irrigation standards.

[0068] The device can be modularly expanded, and the processing capacity of a single set of equipment can reach 50 m³ / d. It is suitable for village and town sewage treatment plants, aquaculture wastewater and river ecological restoration scenarios.

[0069] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A negative carbon plate tower type stainless steel membrane bacteria and algae water treatment device, characterized by: It includes a solar photovoltaic cell assembly, a circuit control device, an upper water tank (1), a three-dimensional plate tower algae pool (2), an LED light-emitting panel assembly (3), a stainless steel membrane filter assembly (4), a light-shielding algae sedimentation tank (5), a peristaltic pump (11), a sludge suction pump (14) and a water outlet pipe (12); The solar photovoltaic cell assembly is connected to the circuit control device, the peristaltic pump (11), the LED light-emitting panel assembly (3) and the sludge suction pump (14), providing clean energy for the water processor, thereby achieving zero external energy consumption operation of the entire system; The LED light-emitting panel assembly (3) comprises a plurality of adjustable color spectrum U-shaped LED lamp tubes; The three-dimensional plate-shaped tower-shaped algae pond (2) is arranged above the ground surface and below the upper water tank (1); the upper water tank (1) is used to receive sewage to be treated and flow into the three-dimensional plate-shaped tower-shaped algae pond (2) by gravity; The three-dimensional plate tower algae pool (2) comprises a plurality of vertically stacked rectangular thin plate trays, wherein the rectangular thin plate trays are made of transparent engineering plastics, each layer of rectangular thin plate trays is arranged at intervals with the adjustable color spectrum U-shaped LED lamp tube, and each layer of rectangular thin plate trays is inoculated with high concentration algae; A tray water inlet is provided at the top of one end of each layer of rectangular thin trays, and a tray water outlet is provided at the bottom of the other end. The tray water inlet of the rectangular thin trays of this layer is connected to the tray water outlet of the upper rectangular thin trays via a pipe, and the tray water outlet of the rectangular thin trays of this layer is connected to the tray water inlet of the lower rectangular thin trays via a pipe; the tray water inlet of the topmost rectangular thin tray is connected to the outlet of the upper water tank (1) via a pipe, and the tray water outlet of the bottommost rectangular thin tray is connected to the inlet of the light-shielding algae sedimentation tank (5) via a pipe, forming an S-shaped flow path capable of realizing liquid gravity flow; The light-shielding algae sedimentation tank (5) is configured as an underground bucket-shaped structure by utilizing the characteristic of algae naturally settling in a light-shielding environment. The stainless steel membrane filter assembly (4) is arranged on the upper part of the light-shielding algae sedimentation tank (5). The liquid inlet of the peristaltic pump (11) is connected to the liquid outlet of the stainless steel membrane filter assembly (4), and the liquid outlet of the peristaltic pump (11) is connected to the outlet pipe (12). After the initially purified water flows through the stainless steel membrane filter assembly, the filter membrane intercepts the algae and suspended matter, and then the water is sucked out through the peristaltic pump to the outlet pipe; The lower part of the light-shielding algae sedimentation tank (5) is a bucket-shaped tank, and the sludge suction pump (14) is arranged at the bottom of the bucket-shaped tank and can suck out the concentrated algae slurry.

2. The negative carbon plate tower stainless steel membrane bacteria-algae water treatment device according to claim 1, characterized in that: It also includes an electromagnetic diverter (9), an algae return pipe (6), a mud delivery pipe (15) and a mud discharge pipe (10); The outlet of the mud suction pump (14) is connected to the inlet of the mud delivery pipe (15), the outlet of the mud delivery pipe (15) is connected to the inlet of the electromagnetic diverter (9), the first outlet of the electromagnetic diverter (9) is connected to the inlet of the topmost rectangular thin disk tower plate through the algae return pipe (6), and the second outlet of the electromagnetic diverter (9) is connected to the inlet of the mud discharge pipe (10).

3. The negative carbon plate tower stainless steel membrane bacteria-algae water treatment device according to claim 2, characterized in that: The inlet of the electromagnetic diverter (9) is connected to a liquid separation hopper made of magnetic material through a hose, an electromagnet is attached to the side wall of the electromagnetic diverter (9), and a funnel-shaped reflux port and a discharge port are arranged side by side at the bottom of the electromagnetic diverter (9); The reflux port is connected to the algae reflux pipe (6), and the discharge port is connected to the mud discharge pipe (10); in a natural state, the liquid separation bucket naturally droops, and the algae liquid enters the reflux port and flows into the reflux pipe; after the electromagnet is turned on to adsorb and tilt the liquid separation bucket made of magnetic material, the algae liquid enters the discharge port and flows into the mud discharge pipe.

4. The negative carbon plate tower stainless steel membrane bacteria-algae water treatment device according to claim 1, characterized in that: The stainless steel membrane filtration assembly (4) comprises a plurality of stainless steel tubes made of stainless steel microfiltration membranes, wherein the average pore size of the stainless steel microfiltration membranes is 0.25 microns.

5. The negative carbon plate tower stainless steel membrane bacteria-algae water treatment device according to claim 1, characterized in that: The algae are Scenedesmus and Chlorella.

6. The negative carbon plate tower stainless steel membrane bacteria-algae water treatment device according to claim 1, characterized in that: A water level control weir (8) with a weir height adjustment plate is provided at the water outlet of the rectangular thin disc tray.

7. The negative carbon plate tower stainless steel membrane bacteria-algae water treatment device according to claim 1, characterized in that: A silica gel algae scraping brush (7) is provided in each layer of the rectangular thin plate tray. The two end surfaces of the silica gel algae scraping brush (7) are in contact with the inner side surfaces of the two long side walls of the rectangular thin plate tray. The bottom surface of the silica gel algae scraping brush (7) is designed in a wavy shape and is used to scrape off most of the attached algae while retaining a small amount of attached algae at the bottom of the rectangular thin plate tray to maintain a balance in the concentration of attached algae and suspended algae.

8. The negative carbon plate tower stainless steel membrane bacteria-algae water treatment device according to claim 1, characterized in that: The solar photovoltaic cell assembly is composed of a plurality of solar crystalline silicon panels (16), an inverter and a storage battery. The solar crystalline silicon panels (16) are installed on the top of the water treatment device or directly on the roof of a building through an adjustable column (17) and are connected to the inverter through an electric wire; the inverter is connected to the storage battery, and the inverter converts the direct current generated by solar energy through the solar crystalline silicon panels (16) into alternating current; the storage battery is connected to the circuit control device.

9. The negative carbon plate tower stainless steel membrane bacteria-algae water treatment device according to claim 1, characterized in that: A detachable stainless steel grille (13) is provided in the middle of the light-shielding algae sedimentation tank (5), and the stainless steel membrane filter assembly (4) is placed above the grille (13).

10. The negative carbon plate tower stainless steel membrane bacteria-algae water treatment device according to claim 1, characterized in that: The stainless steel membrane filtration assembly (4) is operated intermittently, with 9 minutes of filtration and 1 minute of backwashing.

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