Short-cut nitrification and denitrification integrated sewage treatment equipment

Abstract

The utility model discloses short-cut nitrification and denitrification integrated sewage treatment equipment, and relates to the technical field of sewage treatment. The short-cut nitrification and denitrification integrated sewage treatment equipment comprises an anoxic tank, an aerobic tank, a sedimentation tank and a biological filter, a liquid inlet of the aerobic tank is communicated with a liquid outlet of the anoxic tank, a liquid return port of the aerobic tank is communicated with the anoxic tank, and a liquid inlet of the sedimentation tank is communicated with a liquid outlet of the aerobic tank; and a liquid inlet of the biological filter is communicated with a liquid outlet of the sedimentation tank. According to the short-cut nitrification and denitrification integrated sewage treatment equipment, a nitrification and denitrification system is integrated in the nitrification chamber and the denitrification chamber, meanwhile, sewage self-flow is realized by virtue of the height difference between the nitrification chamber and the denitrification chamber, continuous sewage treatment operation can be carried out, the sewage treatment speed is increased, and the sewage treatment efficiency is improved. Meanwhile, air in the nitrification chamber can be effectively prevented from entering the denitrification chamber along with the sewage to damage the low-oxygen environment in the denitrification chamber.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a short-range nitrification and denitrification integrated sewage treatment equipment. Background Art

[0002] In the field of sewage treatment, traditional nitrification and denitrification processes usually require a long treatment time and a large amount of treatment equipment to effectively remove nitrogen pollutants in sewage; however, with the acceleration of urbanization and the increase in demand for sewage treatment, the demand for efficient and compact sewage treatment equipment is also growing.

[0003] The invention discloses a synchronous nitrification and denitrification MBBR sewage treatment equipment with publication number CN212269586U, which relates to the field of environmental protection and comprises an anoxic tank, an aerobic tank, a sedimentation tank and a biological filter tank. The liquid inlet of the aerobic tank is connected with the liquid outlet of the anoxic tank, the liquid return port of the aerobic tank is connected with the anoxic tank, the liquid inlet of the sedimentation tank is connected with the liquid outlet of the aerobic tank; the liquid inlet of the biological filter tank is connected with the liquid outlet of the sedimentation tank; because of the addition of carriers in the anoxic tank and the aerobic tank, the microorganisms in the tanks are mainly on the biofilm, and there is no need to use the method of returning sludge, so the total amount of microorganisms in the biochemical tank is maintained, which reduces equipment investment, makes operation easier, and reduces the operation cost of sewage.

[0004] The above-mentioned nitrification and denitrification MBBR sewage treatment equipment adopts a horizontal structural design, and the equipment used in each process step is separated and arranged in parallel, which is large in size and not conducive to promotion and use. Therefore, a new type of short-range nitrification and denitrification integrated sewage treatment equipment is provided to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a short-range nitrification and denitrification integrated sewage treatment equipment, which can solve the problems raised by the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a short-range nitrification and denitrification integrated sewage treatment equipment, comprising a nitrification chamber, a denitrification chamber and a water supply pipe, the nitrification chamber and the denitrification chamber are both horizontal hollow cylindrical structures and are parallel to each other, the horizontal position of the denitrification chamber is lower than that of the nitrification chamber, a water supply pipe is connected between the adjacent side walls of the nitrification chamber and the denitrification chamber to connect the two, a valve member for controlling the opening and closing of the water supply pipe is arranged on the water supply pipe, the connection between the nitrification chamber and the water supply pipe is located in the middle section of the nitrification chamber, and the connection between the denitrification chamber and the water supply pipe is located near the top of the denitrification chamber;

[0007] It also includes a filling system and an oxygen extraction pump. The filling system is arranged at the top of the nitrification chamber and is connected with the interior of the nitrification chamber. The filling system is used to oxygenate the interior of the nitrification chamber and add nitrifying bacteria. The oxygen extraction pump is arranged at the top of the denitrification chamber and the input end of the oxygen extraction pump is connected with the interior of the denitrification chamber. The oxygen extraction pump is used to extract oxygen from the denitrification chamber.

[0008] Preferably, the filling system includes a distribution box, a connecting pipe and a material box. A horizontal distribution box is arranged at a position inside the nitrification chamber near the top thereof. The bottom of the distribution box is provided with densely distributed and penetrating discharge holes. The top of the distribution box is connected to a connecting pipe communicating with the interior thereof. The top end of the connecting pipe extends to the top of the nitrification chamber and is connected to a material box communicating with the interior thereof.

[0009] Preferably, the filling system further comprises an oxygenation pump and a delivery pipe. The oxygenation pump is arranged at the outer wall of the nitrification chamber, the output end of the oxygenation pump is connected to the delivery pipe, and the end of the delivery pipe is connected and communicated with the material box.

[0010] Preferably, the inner bottom of the nitrification chamber and the denitrification chamber are rotatably connected to a vertically arranged rotating shaft, the outer wall of the rotating shaft is connected to multiple groups of blades distributed in a circular array, and a transmission mechanism that can drive the inner rotating shaft to rotate is arranged between the nitrification chamber and the denitrification chamber.

[0011] Preferably, the transmission mechanism includes a U-shaped seat, a transmission rod and bevel gears. The bottom of the nitrification chamber and the denitrification chamber is connected to a U-shaped seat at a position directly below the rotating shaft. A horizontally arranged transmission rod is rotatably connected to the U-shaped seat. The bottom end of the rotating shaft extends to the inner side of the U-shaped seat and is fixedly connected to a group of bevel gears. A group of bevel gears meshing with the bevel gears at the end of the rotating shaft are installed on the outer wall of the transmission rod.

[0012] Preferably, the transmission mechanism also includes a motor, a sprocket and a chain, wherein a motor is arranged on the outer wall of one group of U-shaped seats, the output shaft of the motor is fixedly connected to the end of the transmission rod in the group of U-shaped seats through a coupling, a group of sprockets are fixedly connected to the outer walls of the two groups of transmission rods, and a chain is installed between the two groups of sprockets to connect the two groups of transmission rods.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] (1) The short-range nitrification and denitrification integrated sewage treatment equipment integrates the nitrification and denitrification systems in the nitrification chamber and the denitrification chamber through the coordinated design of the nitrification chamber, the denitrification chamber, the filling system, the oxygen extraction pump and the water supply pipeline. At the same time, the height difference between the nitrification chamber and the denitrification chamber is used to realize the gravity flow of sewage, and continuous sewage treatment operations can be carried out, which is beneficial to improve the sewage treatment speed. At the same time, it can also effectively prevent the air in the nitrification chamber from entering the denitrification chamber with the sewage to damage the low oxygen environment in the denitrification chamber, thereby providing a guarantee for the denitrification treatment effect.

[0015] (2) The short-range nitrification and denitrification integrated sewage treatment equipment can evenly deliver oxygen and nitrifying bacteria to the nitrification chamber through the setting of the filling system, thereby improving the effect and efficiency of sewage nitrification treatment. In addition, the coordinated design of the shaft, blades and transmission mechanism further improves the effect of sewage nitrification and denitrification treatment, ensures the quality of sewage treatment, and is conducive to promotion and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the front view of the utility model;

[0017] Figure 2 It is a cross-sectional view of the utility model;

[0018] Figure 3 It is a side structural diagram of the utility model.

[0019] In the figure: 1. Nitrification chamber; 2. Denitrification chamber; 3. Filling system; 31. Material box; 32. Connecting pipe; 33. Material box; 34. Oxygen pump; 35. Delivery pipe; 4. Oxygen extraction pump; 5. Water supply pipe; 6. Valve parts; 7. Rotating shaft; 8. Blades; 9. Transmission mechanism; 91. U-shaped seat; 92. Transmission rod; 93. Bevel gear; 94. Motor; 95. Sprocket; 96. Chain. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-3The utility model provides a technical solution: a short-range nitrification and denitrification integrated sewage treatment equipment, including a nitrification chamber 1, a denitrification chamber 2 and a water supply pipe 5, the nitrification chamber 1 and the denitrification chamber 2 are both horizontal hollow cylindrical structures and are parallel to each other, the horizontal position of the denitrification chamber 2 is lower than the horizontal position of the nitrification chamber 1, the adjacent side walls of the nitrification chamber 1 and the denitrification chamber 2 are connected with a water supply pipe 5 to connect the two, and a valve member 6 for controlling the opening and closing of the water supply pipe 5 is arranged on the water supply pipe 5, the connection between the nitrification chamber 1 and the water supply pipe 5 is located in the middle section of the nitrification chamber 1, and the connection between the denitrification chamber 2 and the water supply pipe 5 is located near the top of the denitrification chamber 2; it also includes a filling system 3 and an oxygen pump 4 The filling system 3 is arranged at the top of the nitrification chamber 1 and is connected with the interior of the nitrification chamber 1. The filling system 3 is used for oxygenating the interior of the nitrification chamber 1 and adding nitrifying bacteria. The oxygen pump 4 is arranged at the top of the denitrification chamber 2 and the input end of the oxygen pump 4 is connected with the interior of the denitrification chamber 2. The oxygen pump 4 is used for extracting oxygen from the denitrification chamber 2. The nitrification and denitrification system is integrated into the nitrification chamber 1 and the denitrification chamber 2. At the same time, the height difference between the nitrification chamber 1 and the denitrification chamber 2 is used to realize the gravity flow of sewage, and continuous sewage treatment operations can be carried out, which is beneficial to improving the sewage treatment speed. At the same time, it can also effectively prevent the air in the nitrification chamber 1 from entering the denitrification chamber 2 with the sewage and causing damage to the low oxygen environment in the denitrification chamber 2.

[0022] Among them, the filling system 3 includes a distribution box 31, a connecting pipe 32 and a material box 33. A horizontal distribution box 31 is arranged at a position near the top of the inner side of the nitrification chamber 1. The bottom of the distribution box 31 is provided with densely distributed and penetrating discharge holes. The top of the distribution box 31 is connected to the connecting pipe 32 connected to the interior thereof. The top of the connecting pipe 32 extends to the top of the nitrification chamber 1 and is connected to the material box 33 connected to the interior thereof. The filling system 3 also includes an aeration pump 34 and a delivery pipe 35. An aeration pump 34 is arranged on the outer wall of the nitrification chamber 1. The output end of the aeration pump 34 is connected to the delivery pipe 35. The end of the delivery pipe 35 is connected and communicated with the material box 33. The inner bottoms of the nitrification chamber 1 and the denitrification chamber 2 are both rotatably connected with a vertically arranged rotating shaft 7. The outer wall of the rotating shaft 7 is connected with multiple groups of blades 8 distributed in a circular array. A transmission mechanism 9 that can drive the internal rotating shaft 7 to rotate is arranged between the nitrification chamber 1 and the denitrification chamber 2.

[0023] Secondly, the transmission mechanism 9 includes a U-shaped seat 91, a transmission rod 92 and a bevel gear 93. The bottom of the nitrification chamber 1 and the denitrification chamber 2 is connected to the U-shaped seat 91 at a position directly below the rotating shaft 7. The U-shaped seat 91 is rotatably connected to the transmission rod 92 arranged horizontally. The bottom end of the rotating shaft 7 extends to the inner side of the U-shaped seat 91 and is fixedly connected to a group of bevel gears 93. A group of bevel gears 93 meshing with the bevel gear 93 at the end of the rotating shaft 7 is installed on the outer wall of the transmission rod 92. The transmission mechanism 9 also includes a motor 94, a sprocket 95 and a chain 96. One group of U-shaped seats 91 is connected to the transmission rod 92. A motor 94 is arranged at the outer wall of 1, and the output shaft of the motor 94 is fixedly connected to the end of the transmission rod 92 in the U-shaped seat 91 through a coupling, and a group of sprockets 95 are fixedly connected to the outer walls of the two groups of transmission rods 92, and a chain 96 for connecting the two groups of sprockets 95 is installed between the two groups of sprockets 95, so as to evenly transport oxygen and nitrifying bacteria into the nitrification chamber 1, thereby improving the effect and efficiency of sewage nitrification treatment, and the coordinated design of the rotating shaft 7, the blades 8 and the transmission mechanism 9 further improves the effect of sewage nitrification and denitrification treatment, thereby ensuring the quality of sewage treatment.

[0024] Working principle: The sewage to be treated is transported into the nitrification chamber 1 through the side port thereof, the oxygenation pump 34 is controlled to start, and then nitrifying bacteria are added into the material box 33, and the nitrifying bacteria and oxygen enter the material distribution box 31 through the connecting pipe 32, and then enter the nitrification chamber 1 evenly through the bottom opening of the material distribution box 31 to nitrify the sewage; the motor 94 is controlled to start, and the shaft 7 and the blades 8 are driven to rotate through the transmission of the sprocket 95, the chain 96 and the two sets of bevel gears 93, and the blades 8 stir the sewage; after the sewage is nitrified, the valve member 6 is controlled to be opened, and the sewage after nitrification flows into the denitrification chamber 2 through the water supply pipe 5 under the action of the head difference, and the oxygen extraction pump 4 is controlled to be turned on, and the oxygen extraction pump 4 extracts oxygen in the denitrification chamber 2 to denitrify the sewage.

[0025] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A short-cut nitrification and denitrification integrated sewage treatment equipment, characterized in that: include: The nitrification chamber (1), the denitrification chamber (2) and the water supply pipe (5) are both horizontal hollow cylindrical structures and are parallel to each other. The horizontal position of the denitrification chamber (2) is lower than the horizontal position of the nitrification chamber (1). A water supply pipe (5) is connected between the adjacent side walls of the nitrification chamber (1) and the denitrification chamber (2) to connect the two. A valve member (6) is provided on the water supply pipe (5) to control the opening and closing of the water supply pipe. The connection between the nitrification chamber (1) and the water supply pipe (5) is located in the middle of the nitrification chamber (1), and the connection between the denitrification chamber (2) and the water supply pipe (5) is located near the top of the denitrification chamber (2). A filling system (3) and an oxygen extraction pump (4), wherein the filling system (3) is arranged at the top of the nitrification chamber (1) and is in communication with the interior of the nitrification chamber (1), and the filling system (3) is used to increase oxygen and add nitrifying bacteria to the interior of the nitrification chamber (1); the oxygen extraction pump (4) is arranged at the top of the denitrification chamber (2) and the input end of the oxygen extraction pump (4) is in communication with the interior of the denitrification chamber (2), and the oxygen extraction pump (4) is used to extract oxygen from the denitrification chamber (2).

2. A short-cut nitrification and denitrification integrated sewage treatment equipment according to claim 1, characterized in that: The filling system (3) comprises a material distribution box (31), a connecting pipe (32) and a material box (33); a horizontal material distribution box (31) is arranged at a position near the top of the inner side of the nitrification chamber (1); the bottom of the material distribution box (31) is provided with densely distributed and penetrating material discharge holes; the top of the material distribution box (31) is connected to a connecting pipe (32) communicating with the interior thereof; the top end of the connecting pipe (32) extends to the top of the nitrification chamber (1) and is connected to a material box (33) communicating with the interior thereof.

3. A short-cut nitrification and denitrification integrated sewage treatment equipment according to claim 2, characterized in that: The filling system (3) further comprises an oxygenation pump (34) and a delivery pipe (35). The oxygenation pump (34) is arranged on the outer wall of the nitrification chamber (1). The output end of the oxygenation pump (34) is connected to the delivery pipe (35). The end of the delivery pipe (35) is connected to and communicates with the material box (33).

4. A short-cut nitrification and denitrification integrated sewage treatment equipment according to claim 3, characterized in that: The inner bottoms of the nitrification chamber (1) and the denitrification chamber (2) are both rotatably connected to a vertically arranged rotating shaft (7), and the outer wall of the rotating shaft (7) is connected to a plurality of groups of blades (8) distributed in a circular array, and a transmission mechanism (9) is arranged between the nitrification chamber (1) and the denitrification chamber (2) to drive the inner rotating shaft (7) to rotate.

5. The short-cut nitrification and denitrification integrated sewage treatment equipment according to claim 4, characterized in that: The transmission mechanism (9) comprises a U-shaped seat (91), a transmission rod (92) and a bevel gear (93); the bottom of the nitrification chamber (1) and the denitrification chamber (2) is connected to the U-shaped seat (91) at a position directly below the rotating shaft (7); a horizontally arranged transmission rod (92) is rotatably connected to the U-shaped seat (91); the bottom end of the rotating shaft (7) extends to the inner side of the U-shaped seat (91) and is fixedly connected to a group of bevel gears (93); a group of bevel gears (93) meshing with the bevel gears (93) at the end of the rotating shaft (7) are installed on the outer wall of the transmission rod (92).

6. The short-cut nitrification and denitrification integrated sewage treatment equipment according to claim 5, characterized in that: The transmission mechanism (9) further comprises a motor (94), a sprocket (95) and a chain (96), wherein a motor (94) is arranged at the outer wall of one set of U-shaped seats (91), an output shaft of the motor (94) is fixedly connected to the end of a transmission rod (92) in the set of U-shaped seats (91) through a coupling, a set of sprockets (95) are fixedly connected to the outer walls of the two sets of transmission rods (92), and a chain (96) is sleeved and installed between the two sets of sprockets (95) to transmit and connect the two sets of sprockets.

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