Sewage treatment equipment based on sulfur autotrophic denitrification technology

Abstract

The utility model relates to the technical field of sewage treatment, in particular to sewage treatment equipment based on a sulfur autotrophic denitrification technology, which comprises a machine body, an aerobic zone is arranged on the upper surface of the machine body, and a solar panel for supplying power is fixedly mounted on the upper surface of the machine body through a bracket; a gas collecting box is fixedly installed on the surface of the machine body through a supporting rod, a gas outlet communicated with the interior of the gas collecting box is formed in the surface of the gas collecting box, a pressure valve is arranged in the gas outlet, a hollow rod is fixedly installed on the surface of the gas collecting box, one end of the hollow rod covers the gas outlet, and an inserting rod is inserted into the hollow rod in a sliding and sealing mode. Air holes are formed in the surface of the hollow rod, a scraping strip is fixedly installed at one end of the inserting rod, and an electric adjusting valve is arranged on the surface of the air collecting box. And the scraping strip can automatically clean the surface of the solar cell panel, so that the working stability of the solar cell panel is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewage treatment technical field especially, relates to a sewage treatment equipment based on sulfur autotrophic denitrification technology. BACKGROUND

[0002] In the field of sewage treatment, sulfur autotrophic denitrification technology has shown significant advantages in removing nitrogen pollutants in sewage due to its high efficiency and environmental protection, and has become one of the current hotspots of sewage treatment technology research and application. With the increasing environmental protection requirements, the application of sewage treatment equipment based on sulfur autotrophic denitrification technology is becoming more and more widespread. Solar energy, as a clean and renewable energy source, can effectively reduce the operating cost of the equipment and reduce the dependence on traditional energy sources by applying solar panels to the power supply of the sewage treatment equipment, which meets the development concept of green environmental protection.

[0003] Currently, the solar panels in the sewage treatment equipment are exposed to the outdoor environment for a long time, which is easily affected by dust, leaves, bird droppings and other pollutants. These pollutants covering the surface of the panels will reduce the light transmittance and reduce the absorption of solar energy by the panels, thereby causing a decrease in power generation efficiency and affecting the stable operation of the sewage treatment equipment. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving the following shortcomings in the prior art: the traditional sewage treatment equipment is difficult to adapt to the characteristics of large fluctuations in rural sewage pollutant concentration and complex water quality when treating rural sewage, resulting in excessive concentration of grey water pollutants, which cannot meet the reuse standard, causing waste of water resources. At the same time, the structure is complex, the volume is large, and the self-weight is high, which leads to inconvenient transportation and installation, high construction cost and long construction period, high energy consumption, easy blockage, and a sewage treatment equipment based on sulfur autotrophic denitrification technology is proposed.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A sewage treatment equipment based on sulfur autotrophic denitrification technology, comprising a machine body, an aerobic zone is formed on the upper surface of the machine body, a water inlet pipe is arranged on the surface of the machine body and communicates with the aerobic zone, a filter device is arranged between the water inlet pipe and the aerobic zone, a first filler unit, a second filler unit and a water collecting zone communicating with the second filler unit are formed on the upper surface of the machine body, a sulfur autotrophic treatment unit is arranged inside the machine body and connected with the second filler unit through a perforated flower wall, a solar panel for power supply is fixedly installed on the upper surface of the machine body through a support, and the shell of the machine body is integrally formed by FRPP;

[0007] The body surface is fixedly installed with a gas collecting box through a support rod, a gas outlet communicating with the inside of the gas collecting box is formed in the surface of the gas collecting box, a pressure valve is arranged in the gas outlet, a hollow rod is fixedly installed on the surface of the gas collecting box, the hollow rod covers the gas outlet at one end, a plug rod is slidingly and sealingly arranged in the hollow rod, air holes are formed in the surface of the hollow rod, a scraping strip is fixedly installed at one end of the plug rod, the scraping strip slidingly contacts the solar cell panel, the scraping strip is connected with the body through a reset assembly, and an electric regulating valve for controlling the gas pressure in the gas collecting box is arranged on the surface of the gas collecting box.

[0008] Preferably, the filtering device comprises a half-circular arc-shaped grid and a scraper, one side of the body is fixedly installed with a mounting shell, a driving motor is fixedly installed in the mounting shell, the output shaft of the driving motor penetrates out of the mounting shell and is fixedly installed with a rotating shaft, the scraper is fixedly installed on the surface of the rotating shaft and slidingly contacts the inner wall of the grid, an embedding groove is formed in the upper surface of the body, a collecting frame is slidingly embedded in the embedding groove, and a flow meter for counting flow is arranged on the water inlet pipe.

[0009] Preferably, a voltage sensor is connected to the input circuit of the solar cell panel, a microcontroller for receiving the signal of the voltage sensor is arranged on the surface of the support, the microcontroller is electrically connected with the electric regulating valve and the voltage sensor, a protective cover is fixedly installed on the surface of the support, and the microcontroller is located in the protective cover.

[0010] Preferably, the sulfur autotrophic treatment unit is filled with sulfur autotrophic filler, the sulfur autotrophic treatment unit is connected with the outside through an air pipe, the bottom of the sulfur autotrophic treatment unit and the aerobic zone is provided with an aeration disc, and the side wall of the sulfur autotrophic treatment unit is provided with a water overflow port communicating with the first filler unit.

[0011] Preferably, a net frame is vertically and slidingly arranged in the first filler unit and the second filler unit, the net frame is filled with polyurethane filler, the top of the first filler unit and the second filler unit is provided with a cover plate, and the cover plate located in the second filler unit is slidingly sleeved on the air pipe.

[0012] Preferably, the top of the water collecting area is provided with a baffle, and a water outlet pipe communicating with the water collecting area is fixedly installed on the surface of the body.

[0013] Preferably, the upper surface of the body is provided with a mounting opening between the water collecting area and the first filler unit, a mounting groove is formed in the bottom wall of the mounting opening, a spring rod is vertically rotatably arranged in the mounting groove, a clamping block is fixedly arranged at the top end of the spring rod, the upper surfaces of the cover plate at the top of the first filler unit and the baffle are provided with clamping openings, the positions of the two clamping openings correspond and are used for clamping the clamping block, a T-shaped lifting block is fixedly arranged on the upper surface of the clamping block, a dust cover is threadedly sleeved with the top of the air pipe, and the bottom of the dust cover abuts against the upper surface of the cover plate at the top of the second filler unit.

[0014] Preferably, the reset assembly comprises a round rod and a moving rod, the back surface of the body is fixedly provided with an L-shaped plate, the round rod is horizontally fixedly arranged on the surface of the L-shaped plate and is provided with a round groove at one end, the moving rod is slidingly inserted into the round groove and is fixedly connected with the surface of the scraping strip at one end, and a telescopic spring is arranged in the round groove and is fixedly connected with one end of the moving rod and the groove wall of the round groove.

[0015] Preferably, the surface of the moving rod is communicated with the water collecting area through a water inlet pipe, a drain pipe is fixedly arranged on the surface of the moving rod, an inclined plate is fixedly arranged at the top end of the drain pipe, the bottom end of the inclined plate faces the solar cell panel, a water cavity in communication with the drain pipe is formed in the inclined plate, a plurality of water outlets are formed in the bottom of the inclined plate, one-way valves are arranged in the water inlet pipe and the drain pipe, and the moving rod is slidingly and sealingly inserted into the round groove.

[0016] Preferably, a plurality of placing holes are formed in the upper surface of the cover plate at the top of the first filler unit, and aquatic plant nutrient pots are arranged in the placing holes.

[0017] Compared with the prior art, the utility model has the advantages that:

[0018] Through cooperation between the electric regulating valve, the voltage sensor and the microcontroller, when dust falls on the surface of the solar cell panel and the output voltage of the solar cell panel is reduced by 30%, the scraping strip can clean the surface of the solar cell panel, thereby improving the working stability of the solar cell panel.

[0019] The filtering device can effectively filter grease, vegetable leaves and floating scum and the like solid pollutants in the grey water, and the flowmeter can intermittently control the rotation of the rotating shaft with the scraping plate to clean the inner wall of the grid.

[0020] The water collecting area can be used for collecting treated tail water, so that the problem of insufficient available water for rural residents can be solved, and the organic combination of sewage treatment and irrigation reuse can be realized.

[0021] When the wiper strip is moving, the tail water in the catchment area flows out from the multiple water outlets and flows on the surface of the solar cell panel, so that the cleaning effect of the wiper strip on the solar cell panel can be improved;

[0022] Light and easy to install, low cost, FRPP body shell is integrally formed, with a household three people type calculation, single device transportation weight < 120 kg, reduce the previous rural sewage treatment equipment due to the weight of the transportation installation problem;

[0023] The polyurethane filler and the mesh frame are designed in the first filler unit I area and the second filler unit II area, so that the biological membrane blockage in the equipment can be significantly reduced, the polyurethane filler can be directly replaced, the biological membrane blockage in the equipment can be effectively prevented, the mesh frame is designed to be quickly and conveniently replaced during the running period, and the problem of rainwater backflow caused by extreme abnormal weather such as heavy rain can be effectively prevented. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 A front perspective structural schematic view of a sewage treatment equipment based on sulfur autotrophic denitrification technology is provided for the utility model;

[0025] Figure 2 A top perspective structural schematic view of a sewage treatment equipment based on sulfur autotrophic denitrification technology is provided for the utility model;

[0026] Figure 3 A back perspective structural schematic view of a sewage treatment equipment based on sulfur autotrophic denitrification technology is provided for the utility model;

[0027] Figure 4 A front cross-sectional structural schematic view of a sewage treatment equipment based on sulfur autotrophic denitrification technology is provided for the utility model;

[0028] Figure 5 A top structural schematic view of a sewage treatment equipment based on sulfur autotrophic denitrification technology is provided for the utility model;

[0029] Figure 6 A side structural schematic view of a sewage treatment equipment based on sulfur autotrophic denitrification technology is provided for the utility model;

[0030] Figure 7 A local top perspective structural schematic view of a sewage treatment equipment based on sulfur autotrophic denitrification technology at a middle platform is provided for the utility model;

[0031] Figure 8 A partial three-dimensional cross-sectional structural schematic view of a sewage treatment equipment based on sulfur autotrophic denitrification technology at a filter device is provided for the utility model;

[0032] Figure 9 A partial three-dimensional structure schematic view of a spring rod and a clamping block in the sewage treatment equipment based on sulfur autotrophic denitrification technology is provided in the utility model;

[0033] Figure 10 A partial three-dimensional structure schematic view of a gas collecting box in the sewage treatment equipment based on sulfur autotrophic denitrification technology is provided in the utility model;

[0034] Figure 11 A Figure 2 structure enlarged view in A of the utility model;

[0035] Figure 12 A Figure 2 structure enlarged view in B of the utility model;

[0036] Figure 13 A Figure 3 structure enlarged view in C of the utility model;

[0037] Figure 14 A Figure 3 structure enlarged view in D of the utility model;

[0038] Figure 15 A Figure 7 structure enlarged view in E of the utility model;

[0039] Figure 16 A comparison table of water quality of the sewage treatment equipment based on sulfur autotrophic denitrification technology is provided in the utility model;

[0040] Figure 17 A comparison table of pollutant reduction load of the sewage treatment equipment based on sulfur autotrophic denitrification technology and a subsurface flow artificial wetland is provided in the utility model;

[0041] Figure 18 A table of multiple specifications and working parameters of the sewage treatment equipment based on sulfur autotrophic denitrification technology is provided in the utility model.

[0042] In the figure: 1 body, 2 aerobic zone, 3 water inlet pipe, 4 filter device, 41 grid, 42 scraper, 43 drive motor, 44 rotating shaft, 45 collection frame, 46 flow meter, 5 first filler unit, 6 sulfur autotrophic treatment unit, 61 sulfur autotrophic filler, 62 air pipe, 7 second filler unit, 8 water collecting area, 81 baffle, 82 water outlet pipe, 9 perforated wall, 10 solar cell panel, 11 gas collecting box, 12 hollow rod, 13 insertion rod, 14 scraping strip, 15 air hole, 16 electric regulating valve, 17 microcontroller, 18 protective cover, 19 aerator, 20 net frame, 21 cover plate, 22 spring rod, 23 clamping block, 24 bayonet, 25 pulling block, 26 dust cover, 27 round rod, 28 moving rod, 29 water outlet hole, 30 water inlet pipe, 31 drain pipe, 32 inclined plate, 33 polyurethane filler, 34 aquatic plant nutrient pot. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments.

[0044] The terms such as "up", "down", "left", "right", "middle" and "one" cited in the present application are only for the convenience of clear description, not to limit the scope of the present application, and the change or adjustment of the relative relationship is also considered as the scope of the present application without substantial change of the technical content.

[0045] In a certain village and town in Shandong Province, the equipment is operated in the field, the permanent population of a certain household in the village and town is 3, the collected grey water volume is 0.09 m 3 / d in summer and 0.03 m 3 / d in winter, and the grey water quality is COD≤250 mg / L and TN≤45 mg / L.

[0046] Reference Figures 1-15The utility model provides a kind of sewage treatment equipment based on sulfur autotrophic denitrification technology, including body 1, the upper surface of body 1 is equipped with aerobic zone 2, the surface of body 1 is equipped with with the water inlet pipe 3 being communicated with aerobic zone 2, the material of water inlet pipe 3 is 304 stainless steel, and the filter device 4 is equipped between water inlet pipe 3 and aerobic zone 2, the filter device 4 includes the grid 41 of semicircular arc design and the scraper 42, one side of body 1 is fixedly installed with installation shell, drive motor 43 is fixedly installed in installation shell, the output shaft of drive motor 43 is worn out installation shell, and fixedly installed with rotating shaft 44, the scraper 42 is fixedly installed on the surface of rotating shaft 44, and one end is slidably contacted with the inner wall of grid 41, the upper surface of body 1 is equipped with recess, and the collection frame 45 is slidably embedded in recess, and flowmeter 46 is equipped on water inlet pipe 3 for counting flow, the upper surface of body 1 is also equipped with first packing unit 5, second packing unit 7 and water collecting area 8 being communicated with second packing unit 7, and the sulfur autotrophic treatment unit 6 being connected with second packing unit 7 is arranged in the inside of body 1 by perforated wall 9, and the water inlet (the water inlet is marked as b in the description appendix Figure 4 For the sewage treated by first packing unit 5 enters sulfur autotrophic treatment unit 6, the upper surface of body 1 is fixedly installed with solar cell panel 10 for power supply by support, the shell of body 1 is FRPP integrally formed, and the transportation weight of single device is less than 120 kg, which reduces the transportation and installation problems caused by weight of previous rural sewage treatment equipment, is portable and easy to install, and is low in cost.

[0047] Flowmeter 46 is used for measuring the flow entering from water inlet pipe 3, when flow reaches 25L, flowmeter 46 sends start signal to drive motor 43, drive motor 43 is signal connected with flowmeter 46, after receiving start signal, the output shaft of drive motor 43 rotates, flowmeter 46 is connected with drive motor 43 by controller, flowmeter 46 transmits monitored flow data to controller, and controller judges whether flow data reaches 25L, when reaching 25L, controller sends start instruction to drive motor 43, and the output shaft of drive motor 43 will rotate with rotating shaft 44 and scraper 42, and the scraper 42 will clean the inner wall located in grid 41, and impurities are scraped into collection frame 45, when impurities in collection frame 45 need to be cleaned, just take out collection frame 45 from recess, and after cleaning impurities in it completely, it can be slidably embedded in recess again.

[0048] The surface of the body 1 is fixedly installed with a gas collecting box 11 through a support rod. The gas collecting box 11 is used for collecting gas in the outside world. The surface of the gas collecting box 11 is provided with a gas outlet which is connected with the inside of the gas collecting box 11. The gas outlet is provided with a pressure valve. The surface of the gas collecting box 11 is fixedly installed with a hollow rod 12. One end of the hollow rod 12 covers the gas outlet. The hollow rod 12 is slidingly and sealingly provided with a plug rod 13. The hollow part of the hollow rod 12 and the longitudinal section of the plug rod 13 are of the same shape and are both not circular. The surface of the hollow rod 12 is provided with a gas hole 15. One end of the plug rod 13 is fixedly installed with a scraping strip 14. The scraping strip 14 is in sliding contact with the solar cell panel 10. The scraping strip 14 is connected with the body 1 through a reset assembly. The reset assembly is used for controlling the reset of the scraping strip 14 after movement. The reset assembly comprises a round rod 27 and a moving rod 28. The back surface of the body 1 is fixedly installed with an L-shaped plate. The round rod 27 is horizontally fixedly installed on the surface of the L-shaped plate and is provided with a circular groove at one end. The moving rod 28 is slidingly inserted into the circular groove and is fixedly connected with the surface of the scraping strip 14 at one end. The circular groove is provided with a telescopic spring. The two ends of the telescopic spring are respectively fixedly connected with one end of the moving rod 28 and the groove wall of the circular groove. The surface of the gas collecting box 11 is provided with an electric regulating valve 16 which is used for controlling the gas pressure in the inside of the gas collecting box 11. The input circuit of the solar cell panel 10 is connected with a voltage sensor. The surface of the support is provided with a microcontroller 17 which is used for receiving the signal of the voltage sensor. The microcontroller 17 is electrically connected with the electric regulating valve 16 and the voltage sensor. The surface of the support is fixedly installed with a protective cover 18. The microcontroller 17 is located in the protective cover 18. The protective cover 18 is used for protecting the microcontroller 17 and can play the effect of waterproofing and sun protection.

[0049] The voltage sensor is used to monitor the output voltage of the solar panel 10 in real time, collect voltage data, and convert the collected voltage signal into an electrical signal that can be recognized by the microcontroller 17. The microcontroller 17 is pre-set to reduce the voltage by 30% as the cleaning trigger threshold. The microcontroller 17 continuously receives the signal from the voltage sensor and compares it with the set threshold. When the output voltage of the solar panel 10 is detected to be reduced to 70% of the initial voltage, the microcontroller 17 determines that the cleaning condition is met and sends a control command. The electrically operated regulating valve 16 receives the control signal from the microcontroller 17 and opens, causing the gas pressure in the gas collection box 11 to gradually increase until it reaches the critical value of the pressure valve at the gas outlet, triggering the pressure valve to open. The gas in the gas collection box 11 enters the hollow rod 12 and pushes the plug rod 13 with the scraper 14 to slide on the surface of the solar panel 10. The scraper 14 removes the dust and impurities on the surface of the solar panel 10. In this process, the moving rod 28 moves in the circular groove, the extension spring in the circular groove contracts, and then the plug rod 13 gradually moves back to its original position under the elastic potential energy of the extension spring. The gas in the hollow rod 12 is squeezed out through the multiple gas holes 15. When the cleaning process is completed, the microcontroller 17 can control the electrically operated regulating valve 16 to close, preventing gas from continuing to enter the gas collection box 11 and maintaining system stability.

[0050] The sulfur autotrophic treatment unit 6 is filled with sulfur autotrophic filler 61, and the sulfur autotrophic treatment unit 6 is connected to the outside through the air pipe 62. The sulfur autotrophic treatment unit 6 and the bottom of the aerobic zone 2 are both provided with aeration discs 19. The side wall of the sulfur autotrophic treatment unit 6 is provided with a water overflow port connected to the first filler unit 5. The sulfur autotrophic filler 61 has a sulfur content of > 90%, a particle size of 1-3 cm, a spherical or ellipsoidal shape, a uniform particle size, no dense non-porous surface rock or other impurities, full particles, a rough surface, a dry whole, no obvious water content, no obvious mud content, a non-uniformity coefficient ≤ 1.5, and a diameter of the air pipe 502 of 5 cm and a height of 0.6 m, which can be used as a supplementary hole for the sulfur autotrophic filler 61. The aeration disc 19 located in the sulfur autotrophic treatment unit 6 is located at the bottom of the sulfur autotrophic filler 61 and is used for periodic short-time aeration to prevent the generation of hydrogen sulfide inside the sulfur autotrophic filler 61. The aeration disc 19 located at the bottom of the aerobic zone 2 is used for aeration to increase oxygen and improve the treatment effect of COD and ammonia nitrogen.

[0051] The first filler unit 5 and the second filler unit 7 are both vertically slidably provided with a net frame 20, and the net frame 20 is filled with polyurethane filler 33. The top of the first filler unit 5 and the second filler unit 7 is provided with a cover plate 21, and the cover plate 21 located in the second filler unit 7 is slidably sleeved on the air pipe 62.

[0052] The polyurethane filler 33 in the first filler unit 5 is divided into three layers from top to bottom in the screen frame 20, the first layer is 0.2m height of 1-3cm particle size of ordinary polyurethane filler 33, the second layer is 0.4m height of 1-3cm particle size of denitrification functional bacteria agent immobilized ordinary polyurethane filler 33, the third layer is 0.2m height of 3-5cm particle size of ordinary polyurethane filler 33, the polyurethane filler 33 in the second filler unit 7 is 0.6m high and 1-3cm in particle size.

[0053] The top of the water collecting area 8 is provided with a baffle 81, and the surface of the machine body 1 is fixedly provided with a water outlet pipe 82 communicated with the water collecting area 8.

[0054] The upper surface of the machine body 1 is provided with a mounting hole between the water collecting area 8 and the first filler unit 5, the bottom wall of the mounting hole is provided with a mounting groove, a spring rod 22 is vertically rotatably installed in the mounting groove, a clamping block 23 is fixedly installed at the top end of the spring rod 22, the upper surfaces of the cover plate 21 at the top of the first filler unit 5 and the baffle 81 are both provided with a clamping opening 24, the positions of the two clamping openings 24 correspond and are used for clamping the clamping block 23, a T-shaped lifting block 25 is fixedly installed on the upper surface of the clamping block 23, a dust cover 26 is threadedly sleeved on the top of the air pipe 62, and the bottom of the dust cover 26 abuts against the upper surface of the cover plate 21 at the top of the second filler unit 7.

[0055] When the clamping block 23 is clamped into the two clamping openings 24, the baffle 81 and the cover plate 21 at the top of the first filler unit 5 are locked, when the dust cover 26 is threadedly installed on the top of the air pipe 62 and the bottom end abuts against the upper surface of the cover plate 21 at the top of the second filler unit 7, the cover plate 21 at the top of the second filler unit 7 is locked, when it is needed to unlock, the spring rod 22 is stretched by pulling the lifting block 25, the clamping block 23 is moved out of the two clamping openings 24, then the spring rod 22 is rotated, the clamping block 23 is rotated to be no longer above the baffle 81 and the cover plate 21, then the dust cover 26 is rotated and taken off from the top of the air pipe 62, and then the cover plate 21 at the top of the second filler unit 7 is also taken off from the air pipe 62.

[0056] The surface of the moving rod 28 is communicated with the water collecting area 8 through the water inlet pipe 30, the surface of the moving rod 28 is fixedly provided with a drain pipe 31, the top end of the drain pipe 31 is fixedly provided with an inclined plate 32, the bottom end of the inclined plate 32 faces the solar cell panel 10, the inclined plate 32 is provided with a water cavity communicated with the drain pipe 31, the bottom of the inclined plate 32 is provided with a plurality of water outlets 29, the water inlet pipe 30 and the drain pipe 31 are both provided with a one-way valve, the one-way valve in the water inlet pipe 30 is communicated from the water collecting area 8 to the circular groove, the one-way valve in the drain pipe 31 is communicated from the circular groove to the water cavity, and the moving rod 28 is slidingly and sealingly inserted into the circular groove.

[0057] When the moving rod 28 moves towards the inner part of the circular groove, the volume of the circular groove decreases, the pressure increases, and the water in the circular groove will flow into the water cavity from the drain pipe 31 and then flow out from the multiple water outlets 29 along the inclined surface of the water cavity, which can improve the cleaning effect of the wiper strip 14 on the surface of the solar panel 10. Then, when the moving rod 28 moves towards the outer part of the circular groove, the volume of the circular groove increases, the pressure decreases, and the treated water in the water collection area 8 will flow into the circular groove from the water inlet pipe 30.

[0058] The flow direction of the sewage in the machine body 1 is as follows: the aerobic zone 2, the first filler unit 5, the sulfur autotrophic treatment unit 6, the second filler unit 7, the water collection area 8, and the water outlet pipe 82.

[0059] The bottom of the sulfur autotrophic treatment unit 6 is provided with a gravity sensor (marked as a in the description and drawings) for sensing the weight of the sulfur autotrophic filler 61. When the sulfur autotrophic filler 61 is consumed to only 20%, the gravity sensor will send a prompt to remind manual addition of the sulfur autotrophic filler 61 from the top of the air pipe 62. Figure 4

[0060] The surface of the cover plate 21 located at the top of the first filler unit 5 is provided with multiple placing holes, and the placing holes are installed with emergent aquatic plant nutrient pots 34. The hole diameter of the placing holes is 10 cm, which is used for planting the emergent aquatic plant nutrient pots 34, increasing the treatment effect of the filler area and the landscape effect. The height of the plant grown in the emergent aquatic plant nutrient pot 34 is greater than 20 cm.

[0061] Referring to Figures 16-18 , the types of pollutants include chemical oxygen demand (COD, unit: mg / L), total nitrogen (TN, unit: mg / L), and total phosphorus (TP, unit: mg / L). In the influent water quality, COD is 250 mg / L, TN is 30 mg / L, and TP is 3 mg / L. The effluent water quality requires that COD is reduced to 60 mg / L, TN is reduced to 8 mg / L, and TP is reduced to 1.5 mg / L, which clearly defines the target values of the sewage treatment equipment in water quality purification.

[0062] The removal loads (unit: g / (m³ / d)) of different pollutants of the present equipment and the subsurface constructed wetland are compared, and the pollutants involved are also COD, TN, and TP. The removal load of COD of the present equipment is 30 g / (m³ / d), the removal load of TN is 16.5 g / (m³ / d), and the removal load of TP is 0.237 g / (m³ / d). The removal load of COD of the subsurface constructed wetland ranges from 0.5 g / (m³ / d) to 10 g / (m³ / d), the removal load of TN ranges from 1.5 g / (m³ / d) to 5 g / (m³ / d), and the removal load of TP ranges from 0.2 g / (m³ / d) to 0.5 g / (m³ / d), which reflects the difference in pollutant reduction capacity between the present equipment and the subsurface constructed wetland.

[0063] ​The working parameters of the device are listed for different use scales (3 people in a family, 4 people in a family, 5 people in a family), including maximum flow (unit: m³ / d), which is 0.09 m³ / d when 3 people in a family, 0.12 m³ / d when 4 people in a family, and 0.15 m³ / d when 5 people in a family; hydraulic retention time (HRT, unit: d) is 2.66 d, 2.81 d and 2.63 d respectively; external dimensions (unit: m) are 1.25*0.6*0.9, 1.65*0.6*0.9 and 1.7*0.75*0.9 respectively; installation weight (unit: kg) is 116.39 kg, 148.79 kg and 184.79 kg respectively, which shows the specifications and operating parameters of the device in different use scenarios.

[0064] In summary, the device has the advantages of strong decontamination capacity (meeting the first level standard of Shandong Province Rural Domestic Sewage Treatment and Disposal Facilities Water Pollutant Discharge Standard (DB37 / 3693-2019)), high pollutant reduction load (the device relies on subsurface constructed wetland technology, but the pollutant reduction load is significantly higher than the treatment capacity of subsurface constructed wetland), low installation weight, and low operation and maintenance cost.

[0065] In the utility model, the gas pressure in the gas collecting box 11 can be controlled through the electric regulating valve 16, and when the dust on the surface of the solar cell panel 10 causes the output voltage of the solar cell panel 10 to decrease by 30%, the gas pressure in the gas collecting box 11 is increased until the critical value of the pressure valve is reached, the gas in the gas collecting box 11 is sprayed out and pushes the scraping strip 14 to move and clean the surface of the solar cell panel 10, thereby improving the working stability of the solar cell panel 10.

[0066] In the utility model, unless otherwise specified and limited, the terms "installation", "connection", "connection", "fixing" and the like should be broadly understood.

[0067] The above is only a preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited thereto, any skilled person in the art can make equivalent replacement or change according to the technical scheme and utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A sewage treatment apparatus based on sulfur autotrophic denitrification technology, comprising a machine body (1), characterized in that, The upper surface of the machine body (1) is provided with an aerobic zone (2), the surface of the machine body (1) is provided with a water inlet pipe (3) communicated with the aerobic zone (2), the water inlet pipe (3) and the aerobic zone (2) are provided with a filter device (4), the upper surface of the machine body (1) is also provided with a first filler unit (5), a second filler unit (7) and a water collecting area (8) communicated with the second filler unit (7), the inside of the machine body (1) is provided with a sulfur autotrophic treatment unit (6) connected with the second filler unit (7) through a perforated flower wall (9), the upper surface of the machine body (1) is fixedly installed with a solar cell panel (10) for power supply through a support, and the shell of the machine body (1) is integrally formed by FRPP; The surface of the machine body (1) is fixedly installed with a gas collecting box (11) through a support rod, the surface of the gas collecting box (11) is provided with a gas outlet communicated with the inside thereof, the gas outlet is provided with a pressure valve, the surface of the gas collecting box (11) is fixedly installed with a hollow rod (12), one end of the hollow rod (12) covers the gas outlet, the hollow rod (12) is slidably and sealingly provided with a plug rod (13) inserted therein, the surface of the hollow rod (12) is provided with a gas hole (15), one end of the plug rod (13) is fixedly installed with a scraping strip (14), the scraping strip (14) is in sliding contact with the solar cell panel (10), the scraping strip (14) is connected with the machine body (1) through a reset assembly, and the surface of the gas collecting box (11) is provided with an electric regulating valve (16) for controlling the gas pressure in the inside thereof.

2. The wastewater treatment apparatus based on sulfur autotrophic denitrification technology according to claim 1, characterized in that, The filter device (4) comprises a half-circular arc-shaped grid (41) and a scraper (42), one side of the machine body (1) is fixedly installed with a mounting shell, the mounting shell is fixedly installed with a driving motor (43) therein, the output shaft of the driving motor (43) penetrates out of the mounting shell and is fixedly installed with a rotating shaft (44), the scraper (42) is fixedly installed on the surface of the rotating shaft (44) and is in sliding contact with the inner wall of the grid (41), the upper surface of the machine body (1) is provided with an embedding groove, the embedding groove is slidably and embeddedly provided with a collecting frame (45), and the water inlet pipe (3) is provided with a flow meter (46) for counting flow.

3. The wastewater treatment apparatus based on sulfur autotrophic denitrification technology according to claim 2, characterized in that, The input circuit of the solar cell panel (10) is connected with a voltage sensor, the surface of the support is provided with a microcontroller (17) for receiving the signal of the voltage sensor, the microcontroller (17) is electrically connected with the electric regulating valve (16) and the voltage sensor, the surface of the support is fixedly installed with a protective cover (18), and the microcontroller (17) is located in the protective cover (18).

4. The wastewater treatment apparatus based on sulfur autotrophic denitrification technology according to claim 1, characterized in that, The sulfur autotrophic treatment unit (6) is filled with sulfur autotrophic filler (61), the sulfur autotrophic treatment unit (6) is communicated with the outside through an air pipe (62), the bottom of the sulfur autotrophic treatment unit (6) and the aerobic zone (2) are provided with an aeration disc (19), and the side wall of the sulfur autotrophic treatment unit (6) is provided with a water passing opening communicated with the first filler unit (5).

5. The wastewater treatment apparatus based on sulfur autotrophic denitrification technology according to claim 4, characterized in that, The first packing unit (5) and the second packing unit (7) are both vertically slidably provided with a mesh frame (20), and the mesh frame (20) is filled with polyurethane filler (33). The top of the first packing unit (5) and the second packing unit (7) are both provided with a cover plate (21), and the cover plate (21) located in the second packing unit (7) is slidably sleeved on the vent pipe (62).

6. The wastewater treatment apparatus based on sulfur autotrophic denitrification technology according to claim 5, characterized in that, The top of the water collection area (8) is provided with a baffle (81), and the surface of the body (1) is fixedly installed with a water outlet pipe (82) that is connected to the water collection area (8).

7. The wastewater treatment apparatus based on sulfur autotrophic denitrification technology according to claim 6, characterized in that, The upper surface of the body (1) is provided with an installation port, which is located between the water collection area (8) and the first packing unit (5). The bottom wall of the installation port is provided with an installation groove, and a spring rod (22) is vertically and rotatably installed in the installation groove. A locking block (23) is fixedly installed at the top of the spring rod (22). The upper surfaces of the cover plate (21) and the baffle (81) at the top of the first packing unit (5) are provided with locking slots (24). The positions of the two locking slots (24) are corresponding and used for locking the locking block (23). A T-shaped lifting block (25) is fixedly installed on the upper surface of the locking block (23). The top of the vent pipe (62) is threaded with a dust cover (26). The bottom of the dust cover (26) abuts against the upper surface of the cover plate (21) at the top of the second packing unit (7).

8. The wastewater treatment apparatus based on sulfur autotrophic denitrification technology according to claim 1, characterized in that, The reset assembly includes a round rod (27) and a moving rod (28). An L-shaped plate is fixedly installed on the back of the body (1). The round rod (27) is horizontally fixedly installed on the surface of the L-shaped plate, and a round groove is opened at one end. The moving rod (28) is slidably inserted into the round groove, and one end is fixedly connected to the surface of the scraper (14). A telescopic spring is provided in the round groove, and the two ends of the telescopic spring are fixedly connected to one end of the moving rod (28) and the groove wall of the round groove, respectively.

9. The wastewater treatment apparatus based on sulfur autotrophic denitrification technology according to claim 8, characterized in that, The surface of the movable rod (28) is connected to the water collection area (8) through the water inlet pipe (30). A drain pipe (31) is fixedly installed on the surface of the movable rod (28). An inclined plate (32) is fixedly installed at the top of the drain pipe (31). The bottom end of the inclined plate (32) faces the solar panel (10). A water cavity connected to the drain pipe (31) is opened in the inclined plate (32). Multiple water outlet holes (29) are opened at the bottom of the inclined plate (32). A one-way valve is provided in both the water inlet pipe (30) and the drain pipe (31). The movable rod (28) is slidably and sealed in the circular groove.

10. The wastewater treatment apparatus based on sulfur autotrophic denitrification technology according to claim 4, characterized in that, Multiple placement holes are provided on the upper surface of the cover plate (21) located at the top of the first filler unit (5), and emergent plant nutrient pots (34) are installed in the placement holes.

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