Integrated sewage denitrification treatment equipment

Abstract

The application discloses an integrated sewage denitrification treatment equipment and relates to the technical field of sewage treatment.The technical problem that the sludge pretreatment of a traditional purification equipment is not complete, the purification filler function is single, the denitrification effect is limited, the floating scum is inconvenient to treat, and secondary pollution is easily caused is solved.The equipment comprises a sludge filtering mechanism, a purification mechanism is arranged on the right side of the sludge filtering mechanism, and a floating scum scraping mechanism is arranged at the top of the inside of the purification mechanism.Through mutual cooperation of the above-mentioned mechanisms, sludge can be filtered and directionally discharged when sewage is subjected to denitrification and purification treatment, subsequent purification is guaranteed, the purification link is cooperated with the iron-carbon filler through the huo bo rock, efficient denitrification and phosphorus removal are realized, the activity is maintained through the backwashing function, the floating scum is automatically scraped and discharged, secondary pollution is avoided, and the equipment is suitable for deep denitrification of various sewage and is efficient and reliable.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and more specifically to an integrated wastewater denitrification treatment device. Background Technology

[0002] Existing wastewater denitrification equipment often separates sludge filtration from wastewater purification into independent processes. Filtration mechanisms typically employ simple grids or screens, which can only intercept large particles, while fine sludge easily enters the purification system with the wastewater. Furthermore, the purification process often uses a single type of packing material, such as traditional ceramsite or zeolite, which can only remove some nitrogen through microbial metabolism and has a weak ability to remove phosphorus, organic matter, and heavy metals. For complex industrial wastewater or combined wastewater, multiple devices need to be connected in series for treatment, resulting in a cumbersome process and high costs. In addition, after long-term use, the packing material easily traps suspended solids and aging biofilms. If not maintained in time, this can lead to a rapid decline in treatment capacity. During wastewater purification, a large amount of phosphorus- and organic-containing foam is generated. If not removed in time, it will float on the water surface, creating an anaerobic environment, breeding bacteria, releasing odors, and even causing secondary pollution when discharged with the effluent. Summary of the Invention

[0003] The purpose of this invention is to provide an integrated wastewater denitrification treatment device to solve the following technical problems:

[0004] Traditional purification equipment suffers from incomplete sludge pretreatment and limited purification packing functions, resulting in limited denitrification effects and difficulty in treating scum, which can easily cause secondary pollution.

[0005] The objective of this invention can be achieved through the following technical solution: an integrated wastewater denitrification treatment device, including a filter mud mechanism, a purification mechanism is provided on the right side of the filter mud mechanism, and a foam scraping mechanism is provided at the top of the interior of the purification mechanism.

[0006] The sludge filtration mechanism includes a filtration tank. A sewage inlet is provided at the top left side of the filtration tank. A drive motor is threadedly connected to the right side of the front surface of the filtration tank via a motor frame. A drive wheel is fixed to the outer wall of the output shaft on the front surface of the drive motor. Two first belts are sleeved on the front end of the outer wall of the drive wheel. A large pulley is sleeved on the left side inside the two first belts. A sludge filtration component is provided inside the filtration tank.

[0007] As a further embodiment of the present invention, the sludge filtration component includes a support plate, a sludge collection trough fixedly connected to the top left side of the support plate, a wedge block fixedly connected to the top right side of the support plate, a grid plate provided on the right side of the wedge block, a filter plate fixedly connected to the top right side of the sludge collection trough, two blocking covers symmetrically fixedly connected to the front and rear ends of the top of the sludge collection trough, a guide block fixedly connected to the right side of the two blocking covers, sludge discharge pipes fixedly connected to the front and rear ends of the sludge collection trough, threaded push rods rotatably connected inside the two sludge discharge pipes, a sludge discharge trough fixedly connected to the left side of the two sludge discharge pipes, the support plate fixedly connected inside the filtration tank, the bottom and left top of the grid plate fixedly connected to the top of the support plate and the right top of the filter plate respectively, the right sides of the two guide blocks abutting the bottom left side of the filter plate, the front surface of the sludge discharge pipe located at the front end rotatably connected to the back of the large pulley, and the front end of the threaded push rod fixedly connected to the back of the large pulley.

[0008] As a further embodiment of the present invention, the spiral directions of the front and rear spiral blades of the threaded push rod are symmetrical, and the outer sides of the two spiral blades are in contact with the inner walls of the mud collection trough, the two blocking covers and the two mud discharge pipes.

[0009] As a further embodiment of the present invention, the purification mechanism includes a purification tank, a drain outlet is provided at the bottom back of the purification tank, a purification component is provided at the bottom left side of the purification tank, a foam removal component is provided at the bottom right side of the purification tank, a foam removal outlet is provided at the bottom right side of the purification tank, and the left side of the purification tank is fixedly connected to the right side of the filter tank.

[0010] As a further embodiment of the present invention, the purification component includes an aeration pipe. An air source interface is provided on the left rear end of the aeration pipe, and a backwash interface is provided on the right rear end of the aeration pipe. Multiple support seats are equidistantly fixed to the bottom of the outer wall of the aeration pipe. An aeration disc is fixed to the top of each support seat, and the bottom of each aeration disc is connected to the aeration pipe. The bottoms of the multiple support seats are attached to the bottom left side of the interior of the purification tank. The air source interface and the backwash interface are connected to an external aeration pump and backwash pump respectively via connecting pipes. A filter media box is provided at the top of the aeration pipe. Fixed mesh plates are fixed to the left and right sides of the interior of the filter media box. Two symmetrical sliding mesh plates are slidably connected to the top of the two fixed mesh plates. A support frame is fixed to the top of the inner wall of the filter media box. Stoppers are rotatably connected to the four corners of the top of the filter media box. A buckle plate is snapped onto the top of the support frame. The filter media box is snapped together with the inner wall of the purification tank.

[0011] As a further embodiment of the present invention, the bottom and top of the filter media box are respectively filled with a number of shale rock fillers and micro-electrolytic iron-carbon fillers, and the shale rock fillers and micro-electrolytic iron-carbon fillers are separated by a fixed grid plate and a sliding grid plate.

[0012] As a further embodiment of the present invention, the foam removal component includes a baffle plate, a guide plate fixedly connected to the right side of the baffle plate, two adapters fixedly connected to the right side of the inner wall of the guide plate, a shaft rotatably connected to the inner side of the two adapters, a plurality of cams fixedly fixedly at equal intervals to the outer wall of the shaft, a driven wheel fixedly connected to the outer wall of the shaft near the front end, a second belt sleeved on the outer wall of the driven wheel, a driving wheel sleeved on the inner bottom end of the second belt, a transmission rod fixedly connected to the front surface of the driving wheel, a shaft seat sleeved on the rear end of the outer wall of the transmission rod, a support sleeve sleeved on the front end of the outer wall of the transmission rod, a small pulley fixedly connected to the front surface of the transmission rod, two third belts sleeved on the outer wall of the small pulley, the baffle plate fixedly connected to the inner right side of the purification tank, the bottom of the guide plate fixedly connected to the inner bottom end of the purification tank, the bottom of the shaft seat fixedly connected to the bottom front end of the inner wall of the guide plate, the back of the support sleeve fixedly connected to the bottom right side of the front surface of the purification tank, and the left sides of the two third belts sleeved on the rear end of the outer wall of the transmission wheel.

[0013] As a further aspect of the present invention, a layer of rubber protective pads is machined on the right side of the inner wall of the guide plate at the position corresponding to the landing point of the multiple cams.

[0014] As a further embodiment of the present invention, the foam removal mechanism includes a servo motor. A lead screw is locked to the outer wall of the left output shaft of the servo motor via a coupling. A guide rod is provided at the front and rear ends of the lead screw. A slider is slidably connected to the outer walls of the two guide rods. An adapter rod is fixedly connected to the bottom of the slider. A shaft head is rotatably connected to the front surface and back of the adapter rod. A fixing plate is fixedly connected to the bottom of the two shaft heads. A scraping basket is fixedly connected to the bottom of the fixing plate. The servo motor is threadedly connected to the top right side of the purification tank via a motor frame. The left side of the lead screw is rotatably connected to the bottom right side of the grid plate. The left and right sides of the two guide rods are respectively fixedly connected to the bottom right side of the grid plate and the top right side of the inner wall of the purification tank. The center of the slider is threadedly connected to the outer wall of the lead screw.

[0015] As a further embodiment of the present invention, a torsion spring is machined at the connection between the adapter rod and the two shaft heads, and a number of fine filter holes are evenly opened at the bottom of the scraping basket.

[0016] The beneficial effects of this invention are:

[0017] (1) Through the operation of the sludge filter mechanism, the filter plate intercepts the sludge in the sewage. Combined with the threaded push rod with symmetrical spiral blade design, the sludge in the sludge collection tank can be automatically pushed to the sludge discharge pipe and discharged through the sludge discharge tank, avoiding the accumulation of sludge in the filter tank and preventing the sludge from entering the purification mechanism with the sewage and affecting the denitrification effect. The guide block can guide the intercepted sludge to fall accurately into the sludge collection tank. The wedge block ensures that the filtered sewage enters the purification tank smoothly, improving the separation efficiency of sludge and sewage.

[0018] (2) Through the operation of the purification mechanism, the combined packing enhances the denitrification effect on wastewater. The glutarite packing and micro-electrolysis iron-carbon packing in the filter box form a synergistic effect. The glutarite, as an efficient microbial carrier, can deeply solve nitrogen and phosphorus pollution. The iron-carbon packing degrades organic pollutants through electrochemical reaction. At the same time, the generated iron ions can coagulate and adsorb suspended solids and phosphorus, thus broadening the range of pollutant treatment. It is especially suitable for industrial wastewater with complex composition. The aeration pipe connects the aeration pump and the backwash pump. During normal operation, the aeration disc provides oxygen evenly to meet the metabolic needs of microorganisms. When maintenance is required, the backwash pump inputs an air-water mixture, which thoroughly washes the filter box and packing through the aeration disc, effectively removing the trapped suspended solids and aging biofilm, maintaining the activity of the packing, and extending the effective operating cycle of the equipment.

[0019] (3) Through the cooperation of the foam scraping mechanism and the foam discharge component, the servo motor drives the scraping basket to move horizontally along the smooth rod, which can collect the foam on the water surface in a comprehensive manner. The fine filter holes at the bottom reduce the amount of water carried. When the scraping basket touches the baffle plate, it automatically tilts and pushes the foam to the guide plate. With the continuous knocking of the cam of the foam discharge component, the foam is accelerated to flow along the guide plate to the foam discharge port and is discharged, thus avoiding the accumulation of foam and the deterioration of water quality.

[0020] (4) Through the cooperation of the above-mentioned mechanisms, when the wastewater is denitrified and purified, the sludge can be filtered out and discharged in a directional manner to ensure subsequent purification. The purification process uses the synergy of slag and iron-carbon filler to efficiently remove nitrogen and phosphorus. The backwashing function maintains the activity, and the foam is automatically scraped off and discharged to avoid secondary pollution. It is suitable for deep denitrification of various wastewaters and is highly efficient and reliable. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the connection structure of the integrated wastewater denitrification treatment equipment of the present invention;

[0022] Figure 2 This is the present invention. Figure 1 Another isometric connection structure diagram;

[0023] Figure 3 This is the present invention. Figure 1 A schematic diagram of the rear-view connection structure;

[0024] Figure 4 This is the present invention. Figure 1A partial sectional view of the connection structure;

[0025] Figure 5 This is the present invention. Figure 4 Another isometric connection structure diagram;

[0026] Figure 6 This is the present invention. Figure 4 Schematic diagram of the connection structure of the sludge filter component;

[0027] Figure 7 This is the present invention. Figure 4 A schematic diagram of the connection structure of components such as aeration pipes in the purification system;

[0028] Figure 8 This is the present invention. Figure 4 A schematic diagram of the connection structure of components such as the filter media box in the purification system;

[0029] Figure 9 This is the present invention. Figure 8 A schematic diagram of the connection structure with the snap-on panel removed;

[0030] Figure 10 This is the present invention. Figure 4 Schematic diagram of the connection structure of the middle foam drainage component without the baffle plate;

[0031] Figure 11 This is the present invention. Figure 1 Schematic diagram of the connection structure of the foam removal mechanism;

[0032] Figure 12 This is the present invention. Figure 11 A partially enlarged schematic diagram of the connection structure of the foam removal mechanism.

[0033] In the diagram: 1. Sludge filtration mechanism; 101. Filter tank; 102. Wastewater inlet; 103. Drive motor; 104. Drive wheel; 105. First belt; 106. Large pulley; 107. Sludge filtration component; 1071. Support plate; 1072. Sludge collection trough; 1073. Wedge block; 1074. Grid plate; 1075. Filter plate; 1076. Baffle cover; 1077. Guide block; 1078. Sludge discharge pipe; 1079. Threaded push rod; 10710. Sludge discharge trough; 2. Purification mechanism; 201. Purification tank; 202. Drain outlet; 203. Purification component; 2031. Aeration pipe; 2032. Air source interface; 2033. Backwash interface; 2034. Support base; 2035. Aeration disc; 2036. Filter media box; 20 37. Fixed grid plate; 2038. Sliding grid plate; 2039. Support frame; 20310. Stop block; 20311. Buckle plate; 204. Foam removal component; 2041. Barrier plate; 2042. Guide plate; 2043. Adapter; 2044. Shaft; 2045. Cam; 2046. Driven wheel; 2047. Second belt; 2048. Drive wheel; 2049. Transmission rod; 20410. Shaft seat; 20411. Support sleeve; 20412. Small pulley; 20413. Third belt; 205. Foam discharge port; 3. Foam scraping mechanism; 301. Servo motor; 302. Lead screw; 303. Smooth rod; 304. Slider; 305. Adapter rod; 306. Shaft head; 307. Fixed plate; 308. Scraping basket. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Example 1, please refer to Figures 1-6 As shown, the present invention is an integrated wastewater denitrification treatment device, including a sludge filter mechanism 1, which is used to continuously filter the sludge contained in the wastewater and discharge the filtered sludge. A purification mechanism 2 is provided on the right side of the sludge filter mechanism 1, which is used to purify the wastewater after it has been filtered by the sludge filter mechanism 1. A foam scraping mechanism 3 is provided at the top of the interior of the purification mechanism 2, which is used to scrape off the foam generated when the purification mechanism 2 purifies the wastewater.

[0036] The sludge filtering mechanism 1 includes a filter tank 101 for storing wastewater. A wastewater inlet 102 is located at the top left side of the filter tank 101, connected to an external wastewater pipe. Wastewater requiring denitrification is discharged into the filter tank 101 through the wastewater inlet 102. A drive motor 103 is threadedly connected to the right side of the front surface of the filter tank 101 via a motor frame. The drive motor 103 provides power to a drive wheel 104. The drive wheel 104 is fixedly attached to the outer wall of the output shaft on the front surface of the drive motor 103. The drive wheel 104 is used for... The first belt 105 and the third belt 20413 are driven to rotate. Two first belts 105 are sleeved on the front end of the outer wall of the transmission wheel 104. The first belts 105 are used to drive the large pulley 106 to rotate. The large pulley 106 is sleeved on the left side inside the two first belts 105. The large pulley 106 is used to drive the threaded push rod 1079 to rotate. The filter tank 101 is equipped with a sludge filter component 107. The sludge filter component 107 is used to filter out the sludge in the sewage and can discharge the filtered sludge from the inside of the filter tank 101.

[0037] In this embodiment, preferably, the sludge filtration component 107 includes a support plate 1071, which supports the sludge collection tank 1072 and encloses the left side of the purification tank 201. The sludge collection tank 1072 is fixedly connected to the top left side of the support plate 1071. The sludge collection tank 1072 is used to collect the sludge filtered by the filter plate 1075. A wedge block 1073 is fixedly connected to the top right side of the support plate 1071. The wedge block 1073 is used to guide the filtered wastewater so that the filtered wastewater can flow smoothly into the purification tank 201. A grid plate 1074 is provided on the right side of the wedge block 1073. The grid plate 1074 is used for... The filter plate 1075 is supported on its right top edge and also supports the lead screw 302 and polished rod 303 in the foam scraping mechanism 3. The filter plate 1075 is fixedly connected to the right top edge of the sludge collection tank 1072. The filter plate 1075 is used to filter sewage and remove sludge from the sewage. Two blocking covers 1076 are symmetrically fixed to the front and rear ends of the top of the sludge collection tank 1072. The blocking covers 1076 are used to seal the front and rear ends of the top of the sludge collection tank 1072, thereby blocking the outer wall of the threaded push rod 1079. A guide block 1077 is fixedly connected to the right side of the two blocking covers 1076. Used to guide the filtered sludge into the sludge collection tank 1072, the sludge collection tank 1072 has sludge discharge pipes 1078 fixed to both its front and rear ends. The sludge discharge pipes 1078 support threaded push rods 1079 and discharge sludge pushed into them by the threaded push rods 1079. Threaded push rods 1079 are rotatably connected inside the two sludge discharge pipes 1078. The threaded push rods 1079 push the sludge entering the sludge collection tank 1072, pushing the sludge accumulated at the center of the sludge collection tank 1072 towards the sludge discharge pipes 1078, allowing the filtered sludge to flow out through the sludge discharge pipes 1078. The sludge is discharged from the left side of the 078. The left side of the two sludge discharge pipes 1078 is fixedly connected to the sludge discharge trough 10710, which is used to transport the sludge discharged from the sludge discharge pipes 1078. The support plate 1071 is fixedly connected to the inside of the filter tank 101. The bottom and left top of the grid plate 1074 are fixedly connected to the top of the support plate 1071 and the right top of the filter plate 1075, respectively. The right side of the two guide blocks 1077 is attached to the left bottom of the filter plate 1075. The front surface of the front sludge discharge pipe 1078 is rotatably connected to the back of the large pulley 106. The front end of the threaded push rod 1079 is fixedly connected to the back of the large pulley 106.

[0038] In this embodiment, preferably, the spiral directions of the front and rear spiral blades of the threaded push rod 1079 are symmetrical, and the outer sides of the two spiral blades are in contact with the inner walls of the sludge collection tank 1072, the two blocking covers 1076, and the two sludge discharge pipes 1078. By symmetrically arranging the front and rear spiral blades of the threaded push rod 1079, when the threaded push rod 1079 rotates, the sludge originally gathered in the center of the sludge collection tank 1072 can be pushed into the interior of the two sludge discharge pipes 1078.

[0039] In summary, during the denitrification treatment of wastewater, the wastewater to be treated first flows into the wastewater inlet 102 on the left side of the filter tank 101. Under the action of gravity, it flows to the right and, when it flows through the filter plate 1075, the sludge is intercepted on the left side of the filter plate 1075. The wastewater that has been filtered out of sludge then flows through the filter plate 1075 and is guided by the wedge block 1073 to the purification mechanism 2. The intercepted sludge falls into the sludge collection tank 1072 under the guidance of the guide block 1077, achieving preliminary separation and concentration. At this time, the drive motor 103 drives the large pulley 1 through the drive wheel 104 and the first belt 105. The rotation of the screw rod 1079 causes the screw to rotate. Since the screw rod 1079 has a symmetrical design and is tightly fitted to the inner wall, it generates a thrust at both ends when it rotates, pushing the sludge in the center of the sludge collection tank 1072 into the front and rear sludge discharge pipes 1078 respectively, and finally discharging it through the sludge discharge tank 10710. This achieves continuous filtration, automatic collection and directional discharge of sludge in the sewage, ensuring that sludge does not accumulate in the filter tank 101 and preventing sludge from entering the purification mechanism 2 along with the sewage, thereby improving the denitrification and purification effect of the purification mechanism 2 on the sewage.

[0040] Please see Figures 1-5 and Figures 7-10 As shown, based on Embodiment 1, the purification mechanism 2 includes a purification tank 201, which is used to hold the wastewater after the sludge has been filtered out. A drain outlet 202 is provided at the bottom back of the purification tank 201, which is used to discharge the water inside the purification tank 201 after denitrification treatment. A purification component 203 is provided at the bottom left side of the purification tank 201, which is used to denitrify and purify the wastewater inside the purification tank 201. A foam removal component 204 is provided at the bottom right side of the purification tank 201, which is used to discharge the foam generated during the denitrification and purification of the wastewater by the foam removal mechanism 3. A foam discharge port 205 is provided at the bottom right side of the purification tank 201, which is used to discharge the foam scraped to the right side of the purification tank 201. The left side of the purification tank 201 is fixed to the right side of the filter tank 101.

[0041] In this embodiment, preferably, the purification component 203 includes an aeration pipe 2031. An air source interface 2032 is provided on the left rear end of the aeration pipe 2031, and a backwash interface 2033 is provided on the right rear end of the aeration pipe 2031. Multiple support seats 2034 are equidistantly fixed to the bottom of the outer wall of the aeration pipe 2031. The support seats 2034 support the aeration discs 2035. An aeration disc 2035 is fixed to the top of each support seat 2034, and the bottom of each aeration disc 2035 is connected to the aeration pipe 2031. The aeration discs 2035 are used to transport air to the bottom of the purification tank 201. This design ensures even air distribution within the filter media box 2036, providing the necessary oxygen for microbial growth and metabolism. Multiple support bases 2034 are attached to the bottom left side of the interior of the purification tank 201. The air source interface 2032 and backwash interface 2033 are connected to an external aeration pump and backwash pump respectively via connecting pipes. The aeration pump delivers air through the aeration pipe 2031 to the aeration disc 2035. When the backwash pump starts operating, it draws both external air and water into the aeration disc 2035, which is then discharged, facilitating the cleaning of the purification tank 201 and the filter media box 2036. Backwashing of the purification packing material inside the filter box 2036 removes trapped suspended solids and aged biofilm, thereby restoring the treatment capacity of the packing material. A filter box 2036 is located at the top of the aeration pipe 2031. The filter box 2036 is used to hold the packing material for wastewater denitrification. Fixed mesh plates 2037 are fixedly connected to both the left and right sides of the interior of the filter box 2036. Two symmetrical sliding mesh plates 2038 are slidably connected to the top of the two fixed mesh plates 2037. The sliding mesh plates 2038 can open and close at the top of the fixed mesh plates 2037. The cooperation between the 7 and the sliding grid plate 2038 can separate the different dephosphorization and phosphorus removal fillers filled in the filter box 2036. The top of the inner wall of the filter box 2036 is fixed with a support frame 2039, which is used to support the buckle plate 20311. The top four corners of the filter box 2036 are rotatably connected with a stop block 20310, which is used to snap the buckle plate 20311. The top of the support frame 2039 is snapped with a buckle plate 20311, which is used to cover the filter box 2036. The filter box 2036 is snapped together with the inner wall of the purification tank 201.

[0042] In this embodiment, preferably, the bottom and top of the filter media box 2036 are filled with a plurality of shale rock fillers and micro-electrolytic iron-carbon fillers, respectively, and the shale rock fillers and micro-electrolytic iron-carbon fillers are separated by a fixed grid plate 2037 and a sliding grid plate 2038. The shale rock filler can serve as a biomass carrier for functional microorganisms, providing a place for microorganisms to attach and grow, enabling them to better decompose pollutants, thereby adsorbing and removing phosphorus and nitrogen from wastewater, reducing the nitrogen and phosphorus content of wastewater. Compared with traditional fillers such as crushed stone, gravel, ceramsite, and zeolite, the application of shale rock fillers achieves an ammonia nitrogen removal rate of over 60%, a total nitrogen removal rate of over 50%, and a total phosphorus removal rate of over 70% in wastewater, with a phosphorus adsorption capacity greater than 150 mg / kg. This system effectively removes pollutants such as nitrogen and phosphorus, as well as heavy metal ions, from wastewater, improving water quality. The micro-electrolysis iron-carbon packing generates ferrous ions and hydrogen through electrochemical corrosion, which can reduce and degrade organic pollutants. At the same time, iron ions can act as a coagulant to adsorb suspended solids and phosphorus. Through the operation of the aeration disc 2035, suspended solids and phosphorus can form foam and float to the water surface. Through the cooperation of the foam scraping mechanism 3 and the foam discharge component 204, the foam can be scraped off and discharged from the purification tank 201. Through the cooperation of the hulled rock packing and the micro-electrolysis iron-carbon packing, the hulled rock packing solves nitrogen and phosphorus pollution, while the iron-carbon packing treats organic pollutants and some heavy metals. The combination of the two can achieve multi-dimensional removal of nitrogen, phosphorus, and organic matter in wastewater, and is especially suitable for complex industrial wastewater or combined wastewater.

[0043] In this embodiment, preferably, the defoaming component 204 includes a baffle plate 2041, which is used to block sewage discharged into the left side of the purification tank 201. A guide plate 2042 is fixedly connected to the right side of the baffle plate 2041. The guide plate 2042 is used to guide the foam scraped to its top by the foam removal mechanism 3, so that the foam can flow to the right side of the purification tank 201 and be discharged from the purification tank 201 through the defoaming outlet 205. Two adapters 2043 are fixedly connected to the right side of the inner wall of the guide plate 2042. The adapters 2043 are used to support the shaft 2044, so that the shaft 2044 can rotate inside the adapters 2043. The shaft 2044 is rotatably connected to the inner side of the two adapters 2043. 4. The shaft 2044 is used to fix the cam 2045 and the driven wheel 2046. Multiple cams 2045 are equidistantly fixed to the outer wall of the shaft 2044. When the cams 2045 rotate, they continuously tap the right side of the inner wall of the guide plate 2042, thereby causing the foam adhering to the right side of the outer wall of the guide plate 2042 to flow down more quickly and preventing foam from adhering to the outer wall of the guide plate 2042. A driven wheel 2046 is fixed to the outer wall of the shaft 2044 near the front end. The driven wheel 2046 drives the shaft 2044 to rotate. A second belt 2047 is sleeved on the outer wall of the driven wheel 2046, connecting the driven wheel 2046 to the driving wheel 2048. A drive wheel 2048 is sleeved on the inner bottom end of belt 2047. Drive wheel 2048 drives driven wheel 2046 to rotate via second belt 2047, which in turn drives shaft 2044 to rotate. This rotation of shaft 2044 continuously drives cam 2045 to rotate, causing cam 2045 to continuously strike the right side of the inner wall of guide plate 2042. A transmission rod 2049 is fixed to the front surface of drive wheel 2048, driving drive wheel 2048 to rotate. A bearing seat 20410 is sleeved on the rear end of the outer wall of transmission rod 2049, and a support sleeve 20411 is sleeved on the front end of the outer wall of transmission rod 2049. Both bearing seat 20410 and support sleeve 20411 are used to support transmission rod 2049. For support, a small pulley 20412 is fixed to the front surface of the transmission rod 2049, which drives the transmission rod 2049 to rotate. Two third belts 20413 are sleeved on the outer wall of the small pulley 20412, which drive the small pulley 20412 to rotate. The baffle plate 2041 is fixed to the right side of the inside of the purification tank 201. The bottom of the guide plate 2042 is fixedly connected to the bottom of the inside of the purification tank 201. The bottom of the bearing seat 20410 is fixedly connected to the front end of the bottom of the inner wall of the guide plate 2042. The back of the support sleeve 20411 is fixed to the right side of the bottom of the front surface of the purification tank 201. The left side of the two third belts 20413 is sleeved on the rear end of the outer wall of the transmission wheel 104.

[0044] In this embodiment, preferably, a layer of rubber protective pads is processed on the right side of the inner wall of the guide plate 2042 at the position corresponding to the landing point of the multiple cams 2045, which can protect the inner wall of the guide plate 2042 and prevent the guide plate 2042 from deforming due to the continuous impact of the cams 2045 on the inner wall of the guide plate 2042.

[0045] In summary, through the coordinated operation of purification component 203 and defoaming component 204 in purification mechanism 2, denitrification and purification of filtered wastewater can be achieved while simultaneously removing foam. The left side of purification tank 201 receives wastewater after sludge is filtered out from filter tank 101, and the wastewater enters the tank for initial storage. In purification component 203, an external aeration pump delivers air through air source interface 2032 of aeration pipe 2031, which is then evenly released into filter media box 2036 via aeration disc 2035, providing oxygen for microorganisms. The rammed earth packing at the bottom of filter media box 2036 serves as a microbial carrier, efficiently removing nitrogen and phosphorus from the wastewater through microbial metabolism. The micro-electrolytic iron-carbon packing at the top generates ferrous ions and hydrogen through electrochemical action to degrade organic pollutants, while iron ions coagulate and adsorb suspended solids and phosphorus to form foam. When the packing needs maintenance, a backwash pump inputs an air-water mixture through backwash interface 2033, which is then released into the aeration disc 2035. 035 backwashes the filter media box 2036 and packing to remove suspended solids and aged biofilm to restore treatment capacity. While the wastewater is being treated for denitrification and purification and the filter media box 2036 and its internal packing are being backwashed, the foam scraping mechanism 3 scrapes the foam floating on the water surface to the right side of the foam discharge component 204. The guide plate 2042 guides the foam to the foam discharge port 205. The transmission wheel 104 drives the small pulley 20412, transmission rod 2049, driving wheel 2048, driven wheel 2046 and shaft 2044 to rotate through the third belt 20413. The cam 2045 on the shaft 2044 continuously strikes the inner wall of the guide plate 2042, accelerating the foam to detach and be discharged through the foam discharge port 205. Finally, the qualified wastewater after denitrification, phosphorus removal and organic matter degradation is discharged through the drain outlet 202 at the bottom back of the purification tank 201, completing the entire purification process.

[0046] Example 3, please refer to Figures 1-5 and Figures 11-12As shown, based on Embodiments 1 and 2, the foam removal mechanism 3 includes a servo motor 301, which drives a lead screw 302 to rotate. The lead screw 302 is locked to the outer wall of the output shaft on the left side of the servo motor 301 via a coupling. The lead screw 302 drives a slider 304 to slide. Smooth rods 303 are provided at the front and rear ends of the lead screw 302. The smooth rods 303 limit the movement trajectory of the slider 304, keeping it horizontal. The slider 304 is slidably connected to the outer walls of the two smooth rods 303. The slider 304 drives a connecting rod 305 to move. The connecting rod 305 is fixed to the bottom of the slider 304 and supports the shaft head 306. The front and back surfaces of the connecting rod 305 are rotatably connected. There is a shaft head 306, which is used to fix the fixing plate 307 and enable the fixing plate 307 and the shaft head 306 to rotate around the axis. The bottom of the two shaft heads 306 is fixedly connected to the fixing plate 307, which is used to fix the scraping basket 308. The bottom of the fixing plate 307 is fixedly connected to the scraping basket 308, which is used to scrape the foam floating on the top of the purification tank 201. The servo motor 301 is threadedly connected to the top right side of the purification tank 201 through the motor frame. The left side of the lead screw 302 is rotatably connected to the bottom right side of the grid plate 1074. The left and right sides of the two light rods 303 are respectively fixedly connected to the bottom right side of the grid plate 1074 and the top right side of the inner wall of the purification tank 201. The center of the slider 304 is threadedly connected to the outer wall of the lead screw 302.

[0047] In this embodiment, preferably, a torsion spring is machined at the connection between the adapter rod 305 and the two shaft heads 306 to reset the shaft heads 306. The bottom of the scraping basket 308 is evenly provided with several fine filter holes. After the scraping basket 308 slides to the top of the baffle plate, it will continue to slide a short distance to the right. The top left side of the baffle plate surrounds the right side of the scraping basket 308, causing the scraping basket 308 to tilt to the right. This pushes the foam collected inside to the top of the guide plate 2042, thereby scraping off the foam floating on the sewage. After the foam is discharged, the servo motor 301 drives the lead screw 302 to reverse, thereby resetting the scraping basket 308 so that the foam can be scraped off again in the future.

[0048] In summary, the servo motor 301, acting as the power source, drives the lead screw 302 to rotate when it rotates forward. Since the slider 304 is threadedly connected to the lead screw 302 and is limited by the guide rod 303, the slider 304 slides horizontally to the left along the guide rod 303. This, in turn, drives the scraping basket 308 to move to the left synchronously through the adapter rod 305, the shaft head 306, and the fixing plate 307. At this time, the scraping basket 308 collects the foam on the top of the purification tank 201 into its interior. When the scraping basket 308 slides to the top of the baffle plate, it continues to slide a short distance to the right. The top left side of the baffle plate forms a barrier on the right side of the scraping basket 308, forcing the scraping basket 308 to tilt to the right as a whole, thereby pushing the foam collected inside to the top of the guide plate 2042 to complete the foam discharge. After the foam is discharged, the servo motor 301 reverses, driving the lead screw 302 to rotate in the opposite direction. The slider 304 drives the scraping basket 308 to move to the right and reset. Simultaneously, the torsion spring at the connection between the adapter rod 305 and the shaft head 306 activates, causing the shaft head 306 to drive the fixing plate 307 and the scraping basket 308 back to a horizontal state, ready for the next foam removal operation. During this process, the fine filter holes at the bottom of the scraping basket 308 reduce the wastewater carried during scraping, improving foam removal efficiency.

[0049] Example 4, please refer to Figures 1-12 As shown, this embodiment combines Embodiment 1, Embodiment 2, and Embodiment 3. This integrated wastewater denitrification treatment equipment achieves denitrification of wastewater through the coordinated operation of the sludge filter mechanism 1, the purification mechanism 2, and the foam removal mechanism 3. Wastewater enters the filtration tank 101 of the sludge filter mechanism 1 through the wastewater inlet 102 at the top left side of the filtration tank 101. Under the action of gravity, the wastewater flows to the right and passes through the filter plate 1075. The sludge in the wastewater is intercepted by the filter plate 1075. The filtered wastewater then passes through the wedge block 107. 3. The sludge is guided into the purification tank 201 of the purification mechanism 2. The intercepted sludge falls into the sludge collection tank 1072 under the guidance of the guide block 1077. At the same time, the drive motor 103 drives the large pulley 106 to rotate through the drive wheel 104 and the first belt 105, which drives the threaded push rod 1079 to rotate. Since the spiral blade of the threaded push rod 1079 is symmetrically designed, it will push the sludge in the center of the sludge collection tank 1072 to the sludge discharge pipes 1078 at both ends, and finally discharge it through the sludge discharge tank 10710, realizing the continuous filtration and discharge of sludge.

[0050] Wastewater entering the purification tank 201 undergoes denitrification and purification treatment in the purification unit 2. In the purification component 203, an external aeration pump delivers air through the air source interface 2032 of the aeration pipe 2031, which is then evenly released into the filter media box 2036 via the aeration disc 2035 to provide oxygen for microorganisms. The rammed earth packing at the bottom of the filter media box 2036 serves as a carrier for microorganisms, using microbial metabolism to remove nitrogen and phosphorus from the wastewater. The micro-electrolytic iron-carbon packing at the top generates ferrous ions and hydrogen through electrochemical action, degrading organic pollutants. At the same time, iron ions coagulate and adsorb suspended solids and phosphorus to form foam. When the packing needs maintenance, the backwash pump inputs an air-water mixture through the backwash interface 2033, which backwashes the filter media box 2036 and the packing via the aeration disc 2035 to remove suspended solids and aging biofilm to restore treatment capacity.

[0051] During the purification process, the foam removal mechanism 3 works synchronously. The servo motor 301 drives the lead screw 302 to rotate, and the slider 304 moves horizontally under the limitation of the light rod 303, which drives the scraping basket 308 to collect the foam on the water surface. When the scraping basket 308 slides to the top of the baffle plate and continues to move, it will tilt to the right due to the action of the baffle plate, pushing the foam to the guide plate 2042 of the foam discharge component 204. Afterwards, the servo motor 301 reverses, and the scraping basket 308 resets under the action of the torsion spring, waiting for the next scraping. After the foam is scraped into the foam discharge component 204, the transmission wheel 104 drives the small pulley 20412, transmission rod 2049 and other components to rotate through the third belt 20413, so that the cam 2045 on the shaft 2044 continuously hits the guide plate 2042, causing the foam to flow through the guide plate 2042 to the foam discharge port 205 for discharge. After the sewage is treated by the filtration mud mechanism 1, the purification mechanism 2 and the foam scraping mechanism 3, the sewage will be denitrified and purified, so that the qualified sewage will be discharged through the drain port 202 at the bottom of the back of the purification tank 201.

[0052] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the present invention should still fall within the scope of the present invention.

Claims

1. An integrated wastewater denitrification treatment device, characterized in that, It includes a sludge filtering mechanism, a purification mechanism is provided on the right side of the sludge filtering mechanism, and a foam scraping mechanism is provided at the top of the interior of the purification mechanism. The sludge filtration mechanism includes a filtration tank. A sewage inlet is provided at the top left side of the filtration tank. A drive motor is threadedly connected to the right side of the front surface of the filtration tank via a motor frame. A drive wheel is fixed to the outer wall of the output shaft on the front surface of the drive motor. Two first belts are sleeved on the front end of the outer wall of the drive wheel. A large pulley is sleeved on the left side inside the two first belts. A sludge filtration component is provided inside the filtration tank. The sludge filtration component includes a support plate, a sludge collection trough fixedly connected to the top left side of the support plate, a wedge block fixedly connected to the top right side of the support plate, a grid plate provided on the right side of the wedge block, a filter plate fixedly connected to the top right side of the sludge collection trough, two blocking covers symmetrically fixedly connected to the front and rear ends of the top of the sludge collection trough, a guide block fixedly connected to the right side of the two blocking covers, sludge discharge pipes fixedly connected to the front and rear ends of the sludge collection trough, threaded push rods rotatably connected inside the two sludge discharge pipes, a sludge discharge trough fixedly connected to the left side of the two sludge discharge pipes, the support plate fixedly connected inside the filtration tank, the bottom and top left side of the grid plate fixedly connected to the top of the support plate and the top right side of the filter plate respectively, the right side of the two guide blocks abutting the bottom left side of the filter plate, the front surface of the sludge discharge pipe located at the front end rotatably connected to the back of the large pulley, and the front end of the threaded push rod fixedly connected to the back of the large pulley. The purification mechanism includes a purification tank, a drain outlet is provided at the bottom back of the purification tank, a purification component is provided at the bottom left side of the purification tank, a foam removal component is provided at the bottom right side of the purification tank, a foam removal outlet is provided at the bottom right side of the purification tank, and the left side of the purification tank is fixed to the right side of the filter tank. The purification component includes an aeration pipe. An air source interface is located on the left rear end of the aeration pipe, and a backwash interface is located on the right rear end of the aeration pipe. Multiple support seats are equidistantly fixed to the bottom of the outer wall of the aeration pipe. An aeration disc is fixed to the top of each support seat, and the bottom of each aeration disc is connected to the aeration pipe. The bottoms of the multiple support seats are attached to the bottom left side of the interior of the purification tank. The air source interface and the backwash interface are connected to an external aeration pump and backwash pump respectively via connecting pipes. A filter media box is installed at the top of the aeration pipe. Fixed mesh plates are fixed to the left and right sides of the interior of the filter media box. Two symmetrical sliding mesh plates are slidably connected to the top of the two fixed mesh plates. A support frame is fixed to the top of the inner wall of the filter media box. Stoppers are rotatably connected to the four corners of the top of the filter media box. A buckle plate is snapped onto the top of the support frame. The filter media box is snapped together with the inner wall of the purification tank. The bottom and top of the filter media box are filled with a number of shale rock fillers and micro-electrolytic iron-carbon fillers, respectively. The shale rock fillers and micro-electrolytic iron-carbon fillers are separated by a fixed grid plate and a sliding grid plate. The shale rock fillers serve as a microbial carrier.

2. The integrated wastewater denitrification treatment equipment according to claim 1, characterized in that, The spiral blades at the front and rear ends of the threaded push rod are symmetrical in spiral direction, and the outer sides of the two spiral blades are in contact with the inner walls of the mud collection trough, the two blocking covers and the two mud discharge pipes.

3. The integrated wastewater denitrification treatment equipment according to claim 1, characterized in that, The foam removal component includes a baffle plate, a guide plate fixed to the right side of the baffle plate, two adapters fixed to the right side of the inner wall of the guide plate, shafts rotatably connected to the inner sides of the two adapters, multiple cams fixed at equal intervals to the outer wall of the shafts, a driven wheel fixed to the outer wall of the shaft near the front end, a second belt sleeved on the outer wall of the driven wheel, a driving wheel sleeved on the inner bottom end of the second belt, a transmission rod fixed to the front surface of the driving wheel, a shaft seat sleeved on the rear end of the outer wall of the transmission rod, a support sleeve sleeved on the front end of the outer wall of the transmission rod, a small pulley fixed to the front surface of the transmission rod, two third belts sleeved on the outer wall of the small pulley, the baffle plate fixed to the inner right side of the purification tank, the bottom of the guide plate fixedly connected to the inner bottom end of the purification tank, the bottom of the shaft seat fixedly connected to the bottom front end of the inner wall of the guide plate, the back of the support sleeve fixedly connected to the bottom right side of the front surface of the purification tank, and the left sides of the two third belts sleeved on the rear end of the outer wall of the transmission wheel.

4. The integrated wastewater denitrification treatment equipment according to claim 3, characterized in that, A layer of rubber protective pads is machined on the right side of the inner wall of the guide plate at the positions corresponding to the landing points of multiple cams.

5. The integrated wastewater denitrification treatment equipment according to claim 1, characterized in that, The foam removal mechanism includes a servo motor. A lead screw is locked to the outer wall of the left output shaft of the servo motor via a coupling. Smooth rods are provided at the front and rear ends of the lead screw. A slider is slidably connected to the outer wall of the two smooth rods. An adapter rod is fixedly connected to the bottom of the slider. A shaft head is rotatably connected to the front surface and back of the adapter rod. A fixing plate is fixedly connected to the bottom of the two shaft heads. A scraping basket is fixedly connected to the bottom of the fixing plate. The servo motor is threadedly connected to the top right side of the purification tank via a motor frame. The left side of the lead screw is rotatably connected to the bottom right side of the grid plate. The left and right sides of the two smooth rods are respectively fixedly connected to the bottom right side of the grid plate and the top right side of the inner wall of the purification tank. The center of the slider is threadedly connected to the outer wall of the lead screw.

6. An integrated wastewater denitrification treatment device according to claim 5, characterized in that, A torsion spring is machined at the connection between the adapter rod and the two shaft heads, and several fine filter holes are evenly opened at the bottom of the scraping basket.

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