CN215161997U

CN215161997U - Biological denitrification sewage treatment plant

Info

Publication number: CN215161997U
Application number: CN202121501460.4U
Authority: CN
Inventors: 张万锋
Original assignee: Ankang University
Current assignee: Ankang University
Priority date: 2021-07-02
Filing date: 2021-07-02
Publication date: 2021-12-14
Anticipated expiration: 2031-07-02

Abstract

A biological denitrification sewage treatment device, which relates to the technical field of sewage treatment; the left side and the right side of the sewage treatment box are both provided with a base; connecting rods are symmetrically arranged on the left side and the right side of the top wall of the sewage treatment tank, limiting plates are fixedly connected to the upper ends of the connecting rods, the connecting rods are movably arranged in the fixed plates in a penetrating mode, motors are fixedly connected to the left side and the right side of the top wall of the fixed plates, the output ends of the motors penetrate through the fixed plates and then are fixedly connected with lead screws, the lower ends of the lead screws are rotatably connected to the base through bearings, and nut blocks are rotatably connected to the lead screws; the upper sides of the left side wall and the right side wall of the sewage treatment box are fixedly connected with fixed blocks, and the inner side walls of the left and the right nut blocks are respectively and fixedly connected with the outer side walls of the left and the right fixed blocks; can the mobile device make sewage directly flow into the device, reduce the time that sewage enters into the device, improve sewage treatment's speed, improve work efficiency.

Description

Biological denitrification sewage treatment plant

Technical Field

The utility model relates to the technical field of sewage treatment, concretely relates to biological denitrification sewage treatment plant.

Background

Biological denitrification refers to a process of converting organic nitrogen and ammonia nitrogen in sewage into nitrogen finally through ammoniation, nitration reaction and denitrification reaction under the combined action of microorganisms. The method has the characteristics of economy, effectiveness, easy operation, no secondary pollution and the like, is recognized as a method with development prospect, and has continuously reported new achievements on the technical research of the aspect.

When the biological denitrification sewage treatment device in the prior art is used for sewage treatment, sewage is often required to be pumped into the device through a water pipe and a suction pump, the flow of the water pipe is limited, the pumping time is long, the reaction speed of sewage denitrification is influenced, and the working efficiency is low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a reasonable in design's biological denitrogenation sewage treatment plant to prior art's defect and not enough, can make sewage directly flow into the device by the mobile device, reduce the time that sewage enters into the device, improve sewage treatment's speed, improve work efficiency.

In order to achieve the above purpose, the utility model adopts the following technical proposal: the device comprises a first clapboard, a settling tank, a second clapboard, a fourth clapboard, a third clapboard, an aerobic tank, an anoxic tank, a transmission tank, a gas collection tank and a sewage treatment tank; a first partition plate, a second partition plate and a third partition plate are fixedly arranged between the left inner side wall and the right inner side wall of the sewage treatment tank from top to bottom in sequence, a plurality of fourth partition plates are fixedly connected between the first partition plate and the second partition plate, and a space between the first partition plate and the second partition plate is divided into a settling tank on the left side and a transmission tank in the middle by the fourth partition plate; the inner space of the sewage treatment box is divided into an aerobic box and an anoxic box by a first partition plate, a second partition plate and a third partition plate; the device also comprises a first suction pump, a baffle, a connecting shaft, a first turntable, a second motor and a filter box; the left side and the right side of the sewage treatment box are both provided with a base; connecting rods are symmetrically arranged on the left side and the right side of the top wall of the sewage treatment tank, limiting plates are fixedly connected to the upper ends of the connecting rods, the connecting rods are movably arranged in the fixed plates in a penetrating mode, motors are fixedly connected to the left side and the right side of the top wall of the fixed plates, the output ends of the motors penetrate through the fixed plates and then are fixedly connected with lead screws, the lower ends of the lead screws are rotatably connected to the base through bearings, and nut blocks are rotatably connected to the lead screws; the upper sides of the left side wall and the right side wall of the sewage treatment box are fixedly connected with fixed blocks, and the inner side walls of the left and the right nut blocks are respectively and fixedly connected with the outer side walls of the left and the right fixed blocks; the sewage treatment box is characterized in that an arc-shaped hole is formed in the bottom wall of the sewage treatment box, a plurality of connecting shafts are rotatably connected between the front side wall and the rear side wall of the arc-shaped hole through bearings, a first turntable is fixedly sleeved on each connecting shaft, a plurality of baffles are fixedly connected on the first turntable, a plurality of first through holes are formed in the baffles, and the baffles are movably arranged in the arc-shaped holes; the inner top wall of the transmission case is fixedly connected with a second suction pump, the input end of the second suction pump is connected with a flow divider in a through way, the left end and the right end of the flow divider are connected with a second liquid inlet pipe in a through way, the second liquid inlet pipe is connected with a fourth valve in a rotating way, and the other end of the second liquid inlet pipe on the left side and the other end of the second liquid inlet pipe on the right side extend into the settling tank after respectively penetrating through a fourth partition plate on the left side and the right side; the output end of the second suction pump is connected with a second liquid outlet pipe in a run-through manner, the second liquid outlet pipe is rotatably connected with a fifth valve, and the other end of the second liquid outlet pipe penetrates through the first partition plate and then extends into the anoxic box; a plurality of second through holes are formed in the bottom wall of the transmission case; the inner bottom wall of the transmission box is fixedly provided with a built-in power supply and a second motor from left to right in sequence, the output end of the second motor penetrates through a second partition plate and then is fixedly connected with a transmission shaft, the lower end of the transmission shaft is rotatably connected onto a third partition plate through a bearing, a second rotary table is fixedly sleeved on the transmission shaft, a plurality of first liquid inlet holes are formed in the second rotary table, a plurality of second liquid inlet holes are formed in the third partition plate, the central line of the first liquid inlet holes and the central line of the second liquid inlet holes are alternately and intermittently aligned, and the bottom wall of the second rotary table is in contact with the top wall of the second liquid inlet holes; a filter box is fixedly connected between the left inner side wall and the right inner side wall of the aerobic box, a plurality of filter screens are fixedly connected in the filter box, and a transmission shaft is rotatably connected in the filter box through a bearing; the left side wall and the right side wall of the sewage treatment box are both fixedly connected with a first suction pump, the input end of the first suction pump is both connected with a first liquid inlet pipe in a run-through manner, the first liquid inlet pipe is rotatably connected with a second valve, and the other end of the first liquid inlet pipe on the left side and the other end of the first liquid inlet pipe on the right side respectively penetrate through the left side wall and the right side wall of the sewage treatment box and then extend into the aerobic box; the output end of the first suction pump is connected with a first liquid outlet pipe in a run-through manner, the first liquid outlet pipe is rotationally connected with a first valve, and the other ends of the first liquid outlet pipes on the left side and the right side respectively penetrate through the left side wall and the right side wall of the sewage treatment box and then respectively extend into the left sedimentation box and the right sedimentation box; the front side of the transmission box is movably provided with a box door through a hinge, and the box door is blocked with a plurality of air holes; the first suction pump, the second motor and the second suction pump are all connected with a built-in power supply through leads, and the first motor is externally connected with the power supply through leads.

Preferably, the bottom walls of the bases on the left side and the right side are fixedly connected with anti-slip pads.

Preferably, a plurality of strip-shaped grooves are formed on the top wall of the sewage treatment box, an air inlet pipe is arranged on the bottom wall of each strip-shaped groove in a penetrating manner, an air inlet valve is rotatably connected onto the air inlet pipe, the lower end of the air inlet pipe extends into the anoxic box, the top wall of the sewage treatment tank is fixedly provided with a plurality of gas collecting tanks, the inner top wall of each gas collecting tank is fixedly connected with a touch switch, the outer of the touch switch is sleeved with a spring, the upper ends of the springs are fixedly connected to the inner top wall of the gas collecting tanks, guide posts are fixedly connected to the inner top walls of the gas collecting tanks on the left side and the right side of the spring and movably penetrate through guide blocks, the lower end of the spring is fixedly connected to the top wall of the guide block, a moving rod is fixedly arranged in the guide block in a penetrating way, the lower end of the moving rod is fixedly connected with a piston, the piston is movably arranged in the strip-shaped groove, the upper end of the moving rod is movably arranged in the spring, and the upper end of the moving rod is intermittently contacted with the touch switch; an exhaust pipe is arranged on the left side of the top wall of the gas collection box in a penetrating manner, the lower end of the exhaust pipe extends into the gas collection box, the exhaust pipe is rotatably connected with an exhaust valve, and the upper end of the exhaust pipe is rotatably connected with a sealing plug; the right side of the top wall of the gas collection box is fixedly connected with a buzzer; the buzzer and the touch switch are connected with the built-in power supply through wires.

Preferably, the fixed block on right side is provided with the feed inlet in a penetrating way, the lower extreme of feed inlet is provided with the filling tube in a penetrating way, the last swivelling joint of filling tube has No. three valves, the other end of filling tube passes behind the right side wall of sewage treatment case, stretches to locate in the oxygen deficiency case.

Compared with the prior art, the beneficial effects of the utility model are that: a biological denitrogenation sewage treatment plant, can mobile device make sewage directly flow in the device, reduce the time that sewage enters into the device, improve sewage treatment's speed, improve work efficiency, the utility model has the advantages of it is reasonable to set up, the practicality is high.

Description of the drawings:

fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic diagram of the internal structure of the present invention.

Fig. 3 is an enlarged view of a portion a in fig. 2.

Fig. 4 is an enlarged view of a portion B in fig. 2.

Fig. 5 is an enlarged view of a portion C in fig. 2.

Fig. 6 is a schematic structural diagram of the connection relationship between the first liquid inlet hole, the second rotary plate, the second liquid inlet hole and the third partition plate.

Description of reference numerals:

the device comprises a first motor 1, a fixed block 2, a screw rod 3, a nut block 4, a first partition plate 5, a first valve 6, a first liquid outlet pipe 7, a base 8, an anti-slip pad 9, a first suction pump 10, a first liquid inlet pipe 11, a second valve 12, a transmission shaft 13, a baffle 14, a first through hole 15, a connecting shaft 16, a first rotary table 17, an arc hole 18, a second through hole 19, a second motor 20, an internal power supply 21, a feeding pipe 22, a third valve 23, a feed inlet 24, a sealing plug 25, an exhaust pipe 26, an exhaust valve 27, a settling tank 28, a guide block 29, a moving rod 30, an air inlet pipe 31, an air inlet valve 32, a strip-shaped groove 33, a piston 34, a guide pillar 35, a buzzer 36, a spring 37, a touch switch 38, a second partition plate 39, a limiting plate 40, a connecting rod 41, a fixed plate 42, a fourth partition plate 43, a fourth valve 44, a second liquid inlet pipe 45, a shunt 46, a second suction pump 47, a fifth valve 48, a fourth valve, A second liquid outlet pipe 49, a filter box 50, a filter screen 51, a first liquid inlet hole 52, a second rotary disc 53, a second liquid inlet hole 54, a third partition plate 55, a box door 56, a vent hole 57, an aerobic box 58, an anoxic box 59, a transmission box 60, a gas collection box 61 and a sewage treatment box 62.

The specific implementation mode is as follows:

the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.

As shown in fig. 1 to fig. 6, the following technical solutions are adopted in the present embodiment: the device comprises a first clapboard 5, a settling tank 28, a second clapboard 39, a fourth clapboard 43, a third clapboard 55, an aerobic tank 58, an anoxic tank 59, a transmission tank 60, a gas collection tank 61 and a sewage treatment tank 62; a first clapboard 5, a second clapboard 39 and a third clapboard 55 are sequentially welded between the left inner wall and the right inner wall of the sewage treatment box 62 from top to bottom, a plurality of fourth clapboards 43 are welded between the first clapboard 5 and the second clapboard 39, and the space between the first clapboard 5 and the second clapboard 39 is divided into a sedimentation box 28 at the left side and a sedimentation box 60 at the right side and a transmission box 60 at the middle by the fourth clapboard 43; the internal space of the sewage treatment tank 62 is divided into an aerobic tank 58 and an anoxic tank 59 by a first partition 5, a second partition 39 and a third partition 55; the device also comprises a first suction pump 10, a baffle 14, a connecting shaft 16, a first rotating disc 17, a second motor 20 and a filter box 50; the left side and the right side of the sewage treatment box 62 are both provided with a base 8, and the bottom walls of the base 8 at the left side and the right side are both fixedly glued with anti-skid pads 9; the top wall of the sewage treatment box 62 is symmetrically provided with connecting rods 41 at left and right sides, the upper ends of the connecting rods 41 are welded with limiting plates 40, the connecting rods 41 are movably arranged in a fixing plate 42 in a penetrating manner, the left side and the right side of the top wall of the fixing plate 42 are fixed with a first motor 1 through bolts and a bracket, the output end of the first motor 1 is connected with a screw rod 3 through a coupling after penetrating through the fixing plate 42, the lower end of the screw rod 3 is rotatably connected onto a base 8 through a bearing, and a screw nut block 4 is rotatably connected onto the screw rod 3; the upper sides of the left side wall and the right side wall of the sewage treatment box 62 are respectively welded with the fixed blocks 2, and the inner side walls of the left and the right nut blocks 4 are respectively welded with the outer side walls of the left and the right fixed blocks 2; a feed inlet 24 is arranged on the right fixed block 2 in a penetrating way, the lower end of the feed inlet 24 is provided with a feed pipe 22 in a penetrating way, the upper part of the feed pipe 22 is rotatably connected with a third valve 23, and the other end of the feed pipe 22 passes through the right side wall of the sewage treatment box 62 and then extends into the anoxic box 59; an arc-shaped hole 18 is formed in the bottom wall of the sewage treatment box 62, two connecting shafts 16 are rotatably connected between the front side wall and the rear side wall of the arc-shaped hole 18 through bearings, a first turntable 17 is fixedly sleeved on each connecting shaft 16, a plurality of baffles 14 are welded on the first turntable 17, a plurality of first through holes 15 are formed in each baffle 14, and each baffle 14 is movably arranged in the arc-shaped hole 18; a second suction pump 47 is fixed on the inner top wall of the transmission case 60 through bolts and a bracket, the input end of the second suction pump 47 is connected with a flow divider 46 in a through way, the left end and the right end of the flow divider 46 are connected with a second liquid inlet pipe 45 in a through way, the second liquid inlet pipe 45 is connected with a fourth valve 44 in a rotating way, and the other ends of the second liquid inlet pipes 45 on the left side and the right side respectively penetrate through a fourth partition plate 43 on the left side and the right side and then extend into the settling tank 28; the output end of the second suction pump 47 is connected with a second liquid outlet pipe 49 in a through way, the second liquid outlet pipe 49 is rotatably connected with a fifth valve 48, and the other end of the second liquid outlet pipe 49 penetrates through the first partition plate 5 and then extends into the anoxic box 59; the bottom wall of the transmission case 60 is provided with a plurality of second through holes 19; the inner bottom wall of the transmission box 60 is riveted with a built-in power supply 21 and a second motor 20 through bolts from left to right in sequence, the output end of the second motor 20 penetrates through a second partition plate 39 and then is connected with a transmission shaft 13 through a coupler, the lower end of the transmission shaft 13 is rotatably connected onto a third partition plate 55 through a bearing, a second rotary table 53 is fixedly sleeved on the transmission shaft 13, a plurality of first liquid inlet holes 52 are formed in the second rotary table 53, a plurality of second liquid inlet holes 54 are formed in the third partition plate 55, the central line of the first liquid inlet holes 52 and the central line of the second liquid inlet holes 54 are alternately aligned in an intermittent mode, and the bottom wall of the second rotary table 53 is in contact with the top wall of the second liquid inlet holes 54; the left inner side wall and the right inner side wall of the aerobic tank 58 are riveted with a filter tank 50 through bolts, four filter screens 51 are embedded and fixed in the filter tank 50, and the transmission shaft 13 is rotatably connected in the filter tank 50 through a bearing; a first suction pump 10 is fixed on the left side wall and the right side wall of the sewage treatment box 62 through bolts and brackets, a first liquid inlet pipe 11 is connected on the input end of the first suction pump 10 in a penetrating way, a second valve 12 is connected on the first liquid inlet pipe 11 in a rotating way, and the other end of the first liquid inlet pipe 11 on the left side and the right side respectively penetrates through the left side wall and the right side wall of the sewage treatment box 62 and then extends into the aerobic box 58; the output end of the first suction pump 10 is connected with a first liquid outlet pipe 7 in a run-through manner, the first liquid outlet pipe 7 is rotatably connected with a first valve 6, and the other ends of the first liquid outlet pipes 7 on the left and right sides respectively penetrate through the left and right side walls of the sewage treatment box 62 and then respectively extend into the left and right sedimentation boxes 28; the front side of the transmission box 60 is movably hinged with a box door 56 through a hinge, and the box door 56 is blocked with a plurality of air holes 57; the top wall of the sewage treatment box 62 is provided with a plurality of strip-shaped grooves 33, the bottom wall of the strip-shaped grooves 33 is provided with an air inlet pipe 31 in a penetrating way, the air inlet pipe 31 is rotatably connected with an air inlet valve 32, the lower end of the air inlet pipe 31 extends into the anoxic box 59, the top wall of the sewage treatment box 62 is welded with two gas collecting boxes 61, the inner top wall of the gas collecting boxes 61 is riveted with a touch switch 38 through bolts, the outer of the touch switch 38 is sleeved with a spring 37, the upper end of the spring 37 is welded on the inner top wall of the gas collecting boxes 61, guide posts 35 are welded on the inner top walls of the gas collecting boxes 61 positioned at the left side and the right side of the spring 37, the guide posts 35 are movably arranged in guide blocks 29, the lower end of the spring 37 is welded on the top wall of the guide blocks 29, a movable rod 30 is fixedly arranged in the guide blocks 29 in a penetrating way, the lower end of the movable rod 30 is fixed with a piston 34, the piston 34 is movably arranged in the strip-shaped grooves 33, the upper end of the movable rod 30 is movably arranged in the spring 37, the upper end of the moving bar 30 is intermittently contacted with the touch switch 38; an exhaust pipe 26 is arranged on the left side of the top wall of the gas collection box 61 in a penetrating manner, the lower end of the exhaust pipe 26 extends into the gas collection box 61, an exhaust valve 27 is rotatably connected to the exhaust pipe 26, and a sealing plug 25 is rotatably connected to the upper end of the exhaust pipe 26; the buzzer 36 is riveted on the right side of the top wall of the gas collection box 61 through a bolt; the first suction pump 10, the second motor 20, the buzzer 36, the touch switch 38 and the second suction pump 47 are all connected with the built-in power supply 21 through leads, and the first motor 1 is externally connected with the power supply through leads.

The working principle of the specific embodiment is as follows: when the biological denitrification sewage treatment device is required to be used for sewage treatment, the first motor 1 is turned on, the first motor 1 drives the screw rod 3 to rotate, the screw rod 3 drives the nut block 4 to move downwards, the nut block 4 drives the fixing block 2 to move downwards, the fixing block 2 drives the sewage treatment box 62 to move downwards, the lower side of the sewage treatment box 62 enters sewage, the sewage enters the sewage treatment box 62 through the arc-shaped hole 18, the sewage drives the baffle plate 14 to rotate, the flow of the sewage is accelerated, and the speed of the sewage entering the device is improved; the sewage enters the aerobic tank 58 through the second liquid inlet hole 54 and the first liquid inlet hole 52 in sequence, after the water level of the sewage in the aerobic tank 58 is higher than that of the filter tank 50, the second motor 20 is turned on, the second motor 20 drives the transmission shaft 13 to rotate, the transmission shaft 13 drives the second turntable 53 to rotate, so that the first liquid inlet hole 52 and the second liquid inlet hole 54 are staggered, the sewage stops flowing into the aerobic tank 58, the second motor 20 is turned off, and aerobic autotrophic microorganisms in the filter tank 50 convert nitrogen substances in the sewage into nitrite nitrogen and nitrate nitrogen; after the reaction is finished, opening a first valve 6, a first suction pump 10 and a second valve 12, sucking the sewage after the reaction in the aerobic tank 58 into the left and right settling tanks 28 through the first suction pump 10 for standing and settling, after the settling is finished, opening a fourth valve 44, a second suction pump 47 and a fifth valve 48, sucking the settled sewage into the anoxic tank 59 through the second suction pump 47, filling sufficient denitrifying bacteria in the anoxic tank 59, opening a third valve 23, adding a carbon source such as methanol into the anoxic tank 59 through the feed inlet 24 to provide sufficient electron acceptors for denitrification reaction, reducing nitrite nitrogen and nitrate nitrogen into gaseous nitrogen through the denitrifying bacteria, increasing the pressure in the anoxic tank 59 after the nitrogen is generated, opening the air inlet valve 32, pushing the piston 34 to rise, removing the piston 34 from the strip-shaped groove 33, continuing to move upwards, and enabling the nitrogen to enter the gas collection tank 61, the moving rod 30 drives the guide block 29 to move upwards along the guide post 35, the spring 37 is compressed by the thrust of the guide block 29, when the upper end of the moving rod 30 touches the touch switch 38, the buzzer 36 gives an alarm to indicate that the gas collection box 61 is filled with nitrogen, at the moment, the air inlet valve 32 is closed, and the sealing plug 25 and the exhaust valve 27 are opened to further process the nitrogen in the gas collection box 61, so that the environmental pollution is avoided.

After adopting above-mentioned structure, this embodiment's beneficial effect is as follows:

1. the first motor 1, the fixed block 2, the screw rod 3, the nut block 4, the base 8 and the non-slip mat 9 are arranged, so that the device can be driven to move up and down, and sewage can be guaranteed to normally enter the device;

2. by arranging the feeding pipe 22, the third valve 23 and the feeding port 24, sufficient carbon sources such as methanol and the like can be added into the anoxic box 59 so as to provide sufficient electron acceptors for denitrification reaction;

3. by arranging the guide block 29, the moving rod 30, the air inlet pipe 31, the air inlet valve 32, the strip-shaped groove 33, the piston 34, the guide pillar 35, the buzzer 36, the spring 37 and the touch switch 38, nitrogen generated by reaction can be collected, and alarm reminding can be performed when the collection is full.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. A biological denitrification sewage treatment device comprises a first clapboard (5), a settling tank (28), a second clapboard (39), a fourth clapboard (43), a third clapboard (55), an aerobic tank (58), an anoxic tank (59), a transmission box (60), a gas collection box (61) and a sewage treatment box (62); a first clapboard (5), a second clapboard (39) and a third clapboard (55) are fixedly arranged between the left inner side wall and the right inner side wall of the sewage treatment box (62) from top to bottom in sequence, a plurality of fourth clapboards (43) are fixedly connected between the first clapboard (5) and the second clapboard (39), and the space between the first clapboard (5) and the second clapboard (39) is divided into a sedimentation box (28) at the left side and a sedimentation box (60) at the right side and a transmission box (60) in the middle by the fourth clapboard (43); the inner space of the sewage treatment tank (62) is divided into an aerobic tank (58) and an anoxic tank (59) by a first partition plate (5), a second partition plate (39) and a third partition plate (55); the method is characterized in that: the device also comprises a first suction pump (10), a baffle (14), a connecting shaft (16), a first rotary table (17), a second motor (20) and a filter box (50); the left side and the right side of the sewage treatment box (62) are both provided with a base (8); connecting rods (41) are symmetrically arranged on the left side and the right side of the top wall of the sewage treatment box (62), limiting plates (40) are fixedly connected to the upper ends of the connecting rods (41), the connecting rods (41) are movably arranged in a fixing plate (42) in a penetrating mode, a first motor (1) is fixedly connected to the left side and the right side of the top wall of the fixing plate (42), a lead screw (3) is fixedly connected to the output end of the first motor (1) after the output end of the first motor (1) penetrates through the fixing plate (42), the lower end of the lead screw (3) is rotatably connected to a base (8) through a bearing, and a nut block (4) is rotatably connected to the lead screw (3); the upper sides of the left side wall and the right side wall of the sewage treatment box (62) are fixedly connected with fixed blocks (2), and the inner side walls of the left and the right nut blocks (4) are respectively and fixedly connected with the outer side walls of the left and the right fixed blocks (2); an arc-shaped hole (18) is formed in the bottom wall of the sewage treatment box (62), a plurality of connecting shafts (16) are rotatably connected between the front side wall and the rear side wall of the arc-shaped hole (18) through bearings, a first turntable (17) is fixedly sleeved on each connecting shaft (16), a plurality of baffles (14) are fixedly connected on the first turntable (17), a plurality of first through holes (15) are formed in each baffle (14), and the baffles (14) are movably arranged in the arc-shaped holes (18); a second suction pump (47) is fixedly connected to the inner top wall of the transmission box (60), a flow divider (46) is connected to the input end of the second suction pump (47) in a penetrating manner, a second liquid inlet pipe (45) is connected to the left end and the right end of the flow divider (46) in a penetrating manner, a second liquid inlet pipe (44) is connected to the second liquid inlet pipe (45) in a rotating manner, and the other ends of the second liquid inlet pipes (45) on the left side and the right side penetrate through a fourth partition plate (43) on the left side and the right side respectively and then extend into the settling box (28); the output end of the second suction pump (47) is connected with a second liquid outlet pipe (49) in a run-through manner, the second liquid outlet pipe (49) is rotatably connected with a fifth valve (48), and the other end of the second liquid outlet pipe (49) penetrates through the first partition plate (5) and then extends into the anoxic box (59); a plurality of second through holes (19) are formed in the bottom wall of the transmission case (60); the inner bottom wall of the transmission box (60) is fixedly provided with a built-in power supply (21) and a second motor (20) from left to right in sequence, the output end of the second motor (20) penetrates through a second partition plate (39) and then is fixedly connected with a transmission shaft (13), the lower end of the transmission shaft (13) is rotatably connected onto a third partition plate (55) through a bearing, the transmission shaft (13) is fixedly sleeved with a second rotary plate (53), the second rotary plate (53) is provided with a plurality of first liquid inlet holes (52), the third partition plate (55) is provided with a plurality of second liquid inlet holes (54), the central line of the first liquid inlet holes (52) and the central line of the second liquid inlet holes (54) are alternately aligned in an intermittent manner, and the bottom wall of the second rotary plate (53) and the top wall of the second liquid inlet holes (54) are arranged in a contact manner; a filter box (50) is fixedly connected between the left inner side wall and the right inner side wall of the aerobic box (58), a plurality of filter screens (51) are fixedly connected in the filter box (50), and the transmission shaft (13) is rotatably connected in the filter box (50) through a bearing; the left side wall and the right side wall of the sewage treatment box (62) are both fixedly connected with a first suction pump (10), the input end of the first suction pump (10) is both connected with a first liquid inlet pipe (11) in a run-through manner, the first liquid inlet pipe (11) is rotatably connected with a second valve (12), and the other end of the first liquid inlet pipe (11) on the left side and the right side respectively penetrates through the left side wall and the right side wall of the sewage treatment box (62) and then extends into the aerobic box (58); the output end of the first suction pump (10) is connected with a first liquid outlet pipe (7) in a run-through manner, the first liquid outlet pipe (7) is rotatably connected with a first valve (6), and the other ends of the first liquid outlet pipes (7) on the left and right sides respectively penetrate through the left and right side walls of the sewage treatment box (62) and then respectively extend into the left and right sedimentation boxes (28); a box door (56) is movably arranged at the front side of the transmission box (60) through a hinge, and a plurality of air holes (57) are clamped on the box door (56); the first suction pump (10), the second motor (20) and the second suction pump (47) are connected with the built-in power supply (21) through leads, and the first motor (1) is externally connected with the power supply through leads.

2. The apparatus for treating biological denitrification sewage as recited in claim 1, wherein: the bottom walls of the left and right bases (8) are fixedly connected with non-slip pads (9).

3. The apparatus for treating biological denitrification sewage as recited in claim 1, wherein: a plurality of strip-shaped grooves (33) are formed in the top wall of the sewage treatment box (62), an air inlet pipe (31) is arranged on the bottom wall of each strip-shaped groove (33) in a penetrating manner, an air inlet valve (32) is connected to the air inlet pipe (31) in a rotating manner, the lower end of the air inlet pipe (31) extends into the anoxic box (59), a plurality of gas collecting boxes (61) are fixedly arranged on the top wall of the sewage treatment box (62), a touch switch (38) is fixedly connected to the inner top wall of each gas collecting box (61), a spring (37) is sleeved outside each touch switch (38), the upper end of each spring (37) is fixedly connected to the inner top wall of each gas collecting box (61), guide posts (35) are fixedly connected to the inner top walls of the gas collecting boxes (61) on the left side and the right side of each spring (37), the guide posts (35) are movably arranged in the guide blocks (29), the lower ends of the springs (37) are fixedly connected to the top walls of the guide blocks (29), a moving rod (30) is fixedly arranged in the guide blocks (29), the lower end of the moving rod (30) is fixedly connected with a piston (34), the piston (34) is movably arranged in the strip-shaped groove (33), the upper end of the moving rod (30) is movably arranged in the spring (37), and the upper end of the moving rod (30) is arranged in intermittent contact with the touch switch (38); an exhaust pipe (26) is arranged on the left side of the top wall of the gas collection box (61) in a penetrating manner, the lower end of the exhaust pipe (26) extends into the gas collection box (61), an exhaust valve (27) is rotatably connected onto the exhaust pipe (26), and a sealing plug (25) is rotatably connected onto the upper end of the exhaust pipe (26); the right side of the top wall of the gas collection box (61) is fixedly connected with a buzzer (36); the buzzer (36) and the touch switch (38) are both connected with the built-in power supply (21) through leads.

4. The apparatus for treating biological denitrification sewage as recited in claim 1, wherein: the fixed block (2) on the right side is provided with a feed inlet (24) in a penetrating manner, the lower end of the feed inlet (24) is provided with a feed pipe (22) in a penetrating manner, the feed pipe (22) is rotatably connected with a third valve (23), and the other end of the feed pipe (22) extends into the anoxic box (59) after penetrating through the right side wall of the sewage treatment box (62).