CN114275882B - Nitrifying liquid reflux pulse water distribution device and wastewater biochemical treatment unit comprising same - Google Patents
Nitrifying liquid reflux pulse water distribution device and wastewater biochemical treatment unit comprising same Download PDFInfo
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- CN114275882B CN114275882B CN202111660174.7A CN202111660174A CN114275882B CN 114275882 B CN114275882 B CN 114275882B CN 202111660174 A CN202111660174 A CN 202111660174A CN 114275882 B CN114275882 B CN 114275882B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 216
- 239000007788 liquid Substances 0.000 title claims abstract description 101
- 230000001546 nitrifying effect Effects 0.000 title claims abstract description 38
- 238000010992 reflux Methods 0.000 title claims description 38
- 239000002351 wastewater Substances 0.000 title claims description 15
- 238000007667 floating Methods 0.000 claims abstract description 61
- 230000004044 response Effects 0.000 claims abstract description 48
- 238000004065 wastewater treatment Methods 0.000 claims description 6
- 239000010865 sewage Substances 0.000 description 24
- 230000009471 action Effects 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 239000010802 sludge Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The invention relates to a nitrifying liquid backflow pulse water distribution device, which comprises: the box body is connected with a nitrifying liquid backflow water inlet pipe, a total water inlet pipe and a water outlet pipe; the pipe orifice of the water outlet pipe is positioned at the bottom of the box body; the pulse control unit comprises a floating ball, a guide rod, a float valve and a connecting rod. According to the water outlet control device, the floating ball is arranged, the control of water outlet is achieved through the connecting rod and the float valve which are in response to movement of the floating ball, and particularly, after the floating ball is connected with the connecting rod through the connecting rope and the lever, the pulse control of water outlet can be achieved, and the problem of uneven water distribution in a biological pond is solved.
Description
Technical Field
The invention belongs to the field of wastewater treatment, and particularly relates to a nitrifying liquid backflow pulse water distribution device and a wastewater biochemical treatment unit comprising the same.
Background
The integrated domestic sewage treatment equipment biochemical section mainly adopts an AAO process (anaerobic-anoxic-aerobic), and the AAO method can remove organic carbon pollutants and simultaneously remove nitrogen and phosphorus in sewage. Aiming at the increasingly severe environmental protection pressure at present, the total nitrogen drainage requirement in sewage is more and more strict, and the total nitrogen drainage requirement in partial areas is implemented by three-level standards of surface water environment quality standard (GB 3838-2002), wherein the total nitrogen is 1.0mg/L. The standard provides a great test for the denitrification capacity of the biochemical section. Accordingly, an inverted AAO process (anoxic-anaerobic-aerobic) having an excellent denitrification process is increasingly favored by an integrated domestic sewage treatment system.
Because the inverted AAO technology has three pipelines with different functions, namely, sludge reflux (also known as external reflux), nitrifying liquid reflux (also known as internal reflux), total sewage inflow and the like, the three pipelines in the anoxic tank need to ensure uniform water distribution, otherwise, the subsequent sewage treatment is greatly influenced, and the general sludge reflux enters the end of the anaerobic tank or the anoxic tank.
At present, there are 2 main schemes for solving the problem: a scheme adopts a submersible mixer to uniformly mix water discharged from each pipeline, but has the defects of dead angle in mixing, difficult shape selection of the mixer when the treatment capacity is small, high energy consumption and the like; in addition, the scheme adopts air stirring, namely an air pipe is introduced into the bottom of the anoxic tank, and a perforation stirring mode is adopted, so that the air pipe is blocked, the anoxic tank is excessively high in dissolved oxygen, the denitrification process is influenced, the air quantity of a fan is required to be consumed, and certain energy consumption is increased.
The field needs to develop a water distribution mode of a biochemical treatment unit with low energy consumption and uniform water distribution so as to solve the adverse effect on a sewage treatment system caused by non-uniform water distribution in the prior art.
Disclosure of Invention
The invention aims at providing a nitrifying liquid reflux pulse water distribution device, which comprises the following components:
the box body is connected with a nitrifying liquid backflow water inlet pipe, a total water inlet pipe and a water outlet pipe; the pipe orifice of the water outlet pipe is positioned at the bottom of the box body;
the floating ball can move up or down along with the liquid level position and is used for sensing the liquid level position in the box body, and a through hole is formed in the floating ball;
the pulse control unit comprises a floating ball, a guide rod, a float valve and a connecting rod;
the floating ball can move up or down along with the liquid level position and is used for sensing the liquid level position in the box body, and a through hole is formed in the floating ball; the guide rod is arranged in the box body, penetrates through the through hole of the floating ball and is used for limiting the movement direction of the floating ball; the guide rod is arranged at the bottom and the top of the box body; the float valve is arranged to switch the orifice of the water outlet pipe; the connecting rod penetrates through the valve body of the float valve and is in sliding connection with the float valve; a first end of the connecting rod is provided with a limiting protrusion, and a second end of the connecting rod responds to the upward or downward movement of the floating ball; the connecting rod is designed in such a way that the floating ball ascends to the highest position, the second end of the connecting rod is positioned at the highest position, the floating ball is pulled away from the pipe orifice of the water outlet pipe through the limiting protrusion, the floating ball descends to the lowest position, the second end of the connecting rod is positioned at the lowest position, and the floating ball valve can freely slide to the pipe orifice of the water outlet pipe to close the water outlet pipe.
In the nitrified liquid reflux pulse water distribution device provided by the invention, the float valve is controlled by sensing the liquid level position in the box body through the floating ball, so that the water outlet control of the water outlet pipe is realized. The design can premix the nitrifying liquid backflow water and the total inflow water, and solves the problem that the nitrifying liquid backflow water is easy to mix unevenly.
Preferably, the response of the second end of the connecting rod and the upward or downward movement of the floating ball is realized through the following structure:
the nitrifying liquid reflux pulse water distribution device further comprises a lever, and a rod body of the lever is rotatably and movably connected with the second end of the connecting rod so as to ensure that the connecting rod is always in a vertical state; the first end of the lever is connected with the floating ball through a connecting rope, and the second end of the lever is movably connected with the box body at a fixed point and can rotate around the fixed point.
The first end of the lever is connected with the floating ball through the connecting rope, so that the pulse control of the water outlet pipe can be realized.
Preferably, the float valve is a cake-shaped float valve matched with the orifice of the water outlet pipe, and the density of the cover is less than that of water.
After the float valve is pulled up through the bulge of the connecting rod, the float valve can float to the highest position of the connecting rod through self buoyancy.
In an alternative technical scheme, a first electromagnetic response component is arranged on the float valve, and a second electromagnetic response component is arranged at the orifice of the water outlet pipe;
the first electromagnetic response component and the second electromagnetic response component are designed to generate repulsive magnetic force, the repulsive magnetic force is started after the water outlet pipe is opened, the power supply is cut off after the pipe orifice of the water outlet pipe is in no water circulation for a preset time, and the repulsive magnetic force disappears;
the predetermined time is preferably 2 to 10 seconds.
In the alternative technical scheme, the first electromagnetic response component of the float valve and the second electromagnetic response component of the orifice of the water outlet pipe are set to be repulsive magnetic force, so that the closing action of the float valve can be delayed, part of air can be brought into the water outlet pipe, and oxygen can be brought to a subsequent biological pool; meanwhile, the repulsive magnetic force can also accelerate the opening speed of the float valve at the orifice of the water outlet pipe, so that the water outlet speed of the water outlet pipe is higher, and the disturbance to the biological pool is more severe.
In a further alternative technical scheme, a third electromagnetic response component is arranged on the float valve, and a fourth electromagnetic response component is arranged at the orifice of the water outlet pipe;
the third electromagnetic response component and the fourth electromagnetic response component are designed to generate attractive magnetic force, the attractive magnetic force is started when the liquid level in the box body passes through a preset position, and the attractive magnetic force is closed when the liquid level in the box body is higher than the preset position of the pipe orifice of the water outlet pipe; the preset position is higher than the pipe orifice of the water outlet pipe; the attractive magnetic force is less than the buoyancy of the float valve;
the preset position is 1-5 cm higher than the pipe orifice of the water outlet pipe.
In the further alternative technical scheme, the third electromagnetic response component of the float valve and the fourth electromagnetic response component of the pipe orifice of the water outlet pipe are set to be attractive magnetic force, so that when the liquid level is lower than the preset position, the closing of the float valve can be accelerated, and the air is prevented from entering the water outlet pipe, and the air is prevented from being brought into the following biological pond and other adverse factors.
Of course, the attractive magnetic force needs to be smaller than the buoyancy of the float valve so as to ensure that the float valve can float normally after being opened, and the orifice of the water outlet pipe is opened to the maximum.
The second purpose of the application is to provide a biochemical treatment unit of wastewater, comprising the nitrifying liquid reflux pulse water distribution device according to one of the purposes and a biochemical tank communicated with the water outlet pipe; in the biochemical tank, a water outlet of the water outlet pipe is arranged at a position close to the bottom of the biochemical tank.
The nitrifying liquid backflow pulse water distribution device has the advantages that the inflow water instantaneously enters the biochemical tank in a large quantity in a pulse mode, the stirring of the biochemical tank is completed, and the problem of uneven water distribution is solved.
Preferably, the nitrifying liquid backflow pulse water distribution device is connected with more than 2 water outlet pipes, and each water outlet pipe is correspondingly provided with a pulse control unit; and each water outlet pipe is in different water outlet directions of the biochemical tank close to the bottom.
Preferably, the biochemical tank is an anoxic tank and/or an anaerobic tank, the third electromagnetic response component arranged on the float valve and the fourth electromagnetic response component arranged on the pipe orifice of the water outlet pipe are designed to generate attractive magnetic force, when the liquid level in the tank body passes through a preset position, the attractive magnetic force is started, and when the liquid level in the tank body is higher than the preset position of the pipe orifice of the water outlet pipe, the attractive magnetic force is closed; the preset position is higher than the pipe orifice of the water outlet pipe;
the preset position is 1-5 cm higher than the pipe orifice of the water outlet pipe.
For the anoxic tank and/or the anaerobic tank, the arrangement of the attractive magnetic force can ensure that the oxygen-containing gas cannot enter the biological tank through the water outlet pipe.
Preferably, the biochemical tank is an aerobic tank, the first electromagnetic response component arranged on the float valve and the second electromagnetic response component arranged on the pipe orifice of the water outlet pipe are designed to generate repulsive magnetic force, the repulsive magnetic force is started after the water outlet pipe is opened, the pipe orifice of the water outlet pipe is free of water circulation and is cut off from a power supply for a preset time, and the repulsive magnetic force disappears;
the predetermined time is preferably 2 to 10 seconds.
For the aerobic tank, the arrangement of the repulsive magnetic force can enable part of air to enter the connected biological tank from the water inlet pipe.
A third object of the present application is to provide a wastewater treatment system, which includes the second object of the biochemical wastewater treatment unit.
Compared with the prior art, the application has the following beneficial effects:
according to the water outlet control device, the floating ball is arranged, the control of water outlet is achieved through the connecting rod and the float valve which are in response to movement of the floating ball, and particularly, after the floating ball is connected with the connecting rod through the connecting rope and the lever, the pulse control of water outlet can be achieved, and the problem of uneven water distribution in a biological pond is solved.
Drawings
FIG. 1 is a schematic diagram of the front view structure of the nitrified liquid reflux pulse water distribution device provided in example 1;
fig. 2 is a schematic top view of the nitrified liquid reflux pulse water distribution device provided in embodiment 1;
fig. 3 is a schematic structural diagram of a pulse control unit of the nitrified liquid reflux pulse water distribution device provided in embodiment 1;
fig. 4 is a schematic structural diagram of the nitrified liquid reflux pulse water distribution device provided in embodiment 2;
fig. 5 is a schematic structural diagram of the nitrified liquid reflux pulse water distribution device provided in example 2.
Detailed Description
The following description of the present invention will further illustrate the technical solution of the present invention in conjunction with the specific embodiments, but should be construed as merely embodying the spirit and explanation of the technical solution of the present invention, and should not be construed as limiting the scope of the present invention.
Example 1
As shown in fig. 1 to 3 (fig. 1 is a schematic front view of a nitrifying liquid reflux pulse water distribution device provided in embodiment 1, fig. 2 is a schematic top view of a nitrifying liquid reflux pulse water distribution device provided in embodiment 1, and fig. 3 is a schematic structure of a pulse control unit of a nitrifying liquid reflux pulse water distribution device provided in embodiment 1), embodiment 1 provides a nitrifying liquid reflux pulse water distribution device, including:
the box body 100 is connected with a nitrifying liquid backflow water inlet pipe 110, a total water inlet pipe 120 and a water outlet pipe 130; the orifice of the water outlet pipe 130 is positioned at the bottom of the box body 100; the water outlet pipe 130 is connected with the rest biological pond 300.
The pulse control unit includes a floating ball 210, a guide rod 220, a float valve 230, a link 240, and a lever 250.
The floating ball 210 can move up or down along with the liquid level position, and is used for sensing the liquid level position inside the box 100, and a through hole 211 is arranged inside the floating ball 210; the guide rod 220 is disposed inside the case 100 and passes through the through hole 211 of the floating ball 210, for limiting the movement direction of the floating ball 210; the guide rod 220 is vertically arranged at the bottom and the top of the box 100; the float valve 230 is configured to switch the orifice of the water outlet pipe 130; the connecting rod 240 passes through the valve body of the float valve 230 and is slidably connected to the float valve 230; the first end 241 of the connecting rod 240 is provided with a limiting protrusion 243, and the rod body of the lever 250 is rotatably and movably connected with the second end 242 of the connecting rod 240, so as to ensure that the connecting rod 240 is always in a vertical state; the first end 251 of the lever 250 is connected with the floating ball 210 through a connecting rope 260, and the second end 252 of the lever 250 is movably connected with the box body 100 at a fixed point 101 and can rotate around the fixed point 101; the second end 242 of the connecting rod 240 is hinged with the rod body of the lever 250; the second end 252 of the lever 250 is hingedly connected to the fixed point 101 of the housing 100.
The connecting rod 240 is designed such that the floating ball 210 moves upward to the highest position, the second end 242 of the connecting rod 240 is located at the highest position, the floating ball 210 moves downward to the lowest position by pulling the float valve 230 away from the pipe orifice of the water outlet pipe 130 through the limit protrusion 243, the second end 242 of the connecting rod 240 is located at the lowest position, and the float valve 230 can freely slide down to the pipe orifice of the water outlet pipe 130 to close the water outlet pipe 130.
Preferably, the float valve 230 is a pie-shaped float valve that mates with the outlet pipe orifice, and the cap density is less than the water density. The exemplary float valve 230 is preferably a rubber-sealed float valve, and more preferably a pie-shaped rubber-sealed float valve.
In fig. 1, 10 is the highest position of the liquid surface in the tank 100, and 20 is the lowest position of the liquid surface in the tank 100.
Embodiment 1 also provides a wastewater biochemical treatment unit, which comprises the nitrified liquid reflux pulse water distribution device and a biochemical tank 300 communicated with the water outlet pipe; in the biochemical tank 300, the water outlet of the water outlet pipe 300 is disposed at a position close to the bottom of the biochemical tank 300.
The working principle of the nitrifying liquid reflux pulse water distribution device provided in the embodiment 1 is as follows:
(1) When the tank 100 is not in water, the float valve 230 is closed with the orifice of the water outlet pipe 130, the water outlet pipe 130 is in a closed state, the floating ball 210 is in a low liquid level state (the liquid level is 20, the floating ball is in a solid line 210), the connecting rope 260 is in a loose state, and the mixed sewage cannot enter the biochemical tank 300.
(2) As the nitrifying liquid backflow water inlet pipe 110 and the sewage total water inlet pipe 120 are continuously injected into the water inlet, the liquid level in the tank body 100 is continuously increased, the floating ball 210 is gradually in a tensioning state along with the rising of the liquid level, and the connecting rope 260 is slowly in a tensioning state; as water pressure continues to act on the float valve 230, the float valve is always closed and the outlet pipe 130 is always closed.
(3) As the nitrified liquid backflow water inlet pipe 110 and the sewage total water inlet pipe 120 are continuously injected into the water inlet, the liquid level is continuously increased, after being higher than the set liquid level, the floating ball 210 is continuously increased until the first end 251 of the lever 250 is pulled up, the lever 250 lifts the connecting rod 240 together, the float valve 230 overcomes the water pressure under the action of the limit protrusion 243 of the connecting rod 240, breaks away from the pipe orifice of the water outlet pipe 130, floats to the lower part of the lever 250 under the action of buoyancy, and the mixed sewage in the tank 100 instantaneously enters the biochemical tank 300 through the water outlet pipe 130; because the wastewater belongs to instantaneous inflow and has larger flow velocity, the sewage and the deposited sludge in the biochemical tank can be uniformly mixed.
(4) When the sewage in the tank 100 flows out, the float valve 230 descends to the pipe orifice of the water outlet pipe 130 under the action of gravity, and the valve is closed; at the same time, as the liquid level drops, the floating ball 210 also returns to the low liquid level state (the floating ball is at the solid line 210), the connecting rope 260 returns to the relaxed state, and the system returns to the state of (1).
Example 2
As shown in fig. 4 (fig. 4 is a schematic structural diagram of a nitrifying liquid reflux pulse water distribution device provided in embodiment 2), embodiment 2 provides another nitrifying liquid reflux pulse water distribution device, and the specific structure is that, on the basis of the nitrifying liquid reflux pulse water distribution device provided in embodiment 1, the following structure is further provided:
the float valve 230 is provided with a first electromagnetic response component 310, and the orifice of the water outlet pipe 130 is provided with a second electromagnetic response component 320;
the first electromagnetic response component 310 and the second electromagnetic response component 320 are designed to generate a repulsive magnetic force, the repulsive magnetic force is started after the water outlet pipe 130 is opened, the electromagnetic signal is cut off after the water outlet pipe 130 pipe orifice is free from water circulation for a preset time, and the repulsive magnetic force disappears; the predetermined time is preferably 2 to 10 seconds.
The magnetic forces of the first electromagnetic response unit 310 and the second electromagnetic response unit 320 may be controlled by signals, which belongs to the prior art in the field, and an internal power supply may be exemplarily disposed inside the first electromagnetic response unit 310 (or the second electromagnetic response unit 320), and an infinite signal starting device may be configured. The sensing device of the wireless signal starting device is arranged at the pipe orifice of the water outlet pipe 130 and is used for sensing whether water flows or not.
The working principle of the nitrifying liquid reflux pulse water distribution device provided in the embodiment 2 is as follows:
(1) When the tank 100 is not in water, the float valve 230 is closed with the orifice of the water outlet pipe 130, the water outlet pipe 130 is in a closed state, the floating ball 210 is in a low liquid level state (the liquid level is 20, the floating ball is in a solid line 210), the connecting rope 260 is in a loose state, and the mixed sewage cannot enter the biochemical tank 300.
(2) As the nitrifying liquid backflow water inlet pipe 110 and the sewage total water inlet pipe 120 are continuously injected into the water inlet, the liquid level in the tank body 100 is continuously increased, the floating ball 210 is gradually in a tensioning state along with the rising of the liquid level, and the connecting rope 260 is slowly in a tensioning state; as water pressure continues to act on the float valve 230, the float valve is always closed and the outlet pipe 130 is always closed.
(3) As the nitrified liquid backflow water inlet pipe 110 and the sewage total water inlet pipe 120 are continuously injected into water, the liquid level is continuously increased, after being higher than the set liquid level, the buoyancy of the floating ball 210 is increased until the first end 251 of the lever 250 is pulled up, the lever 250 lifts the connecting rod 240 together, the float valve 230 overcomes the water pressure under the action of the limit protrusion 243 of the connecting rod 240, breaks away from the pipe orifice of the water outlet pipe 130, floats to the lower part of the lever 250 under the action of buoyancy, the mixed sewage in the tank 100 instantaneously enters the biochemical tank 300 through the water outlet pipe 130, meanwhile, the power is switched on, and the first electromagnetic response part 310 and the second electromagnetic response part 320 generate repulsive magnetic force to promote the float valve 230 to rapidly rise; because the wastewater belongs to instantaneous inflow and has larger flow velocity, the sewage and the deposited sludge in the biochemical tank can be uniformly mixed.
(4) When the sewage in the tank 100 flows out, the pipe orifice of the water outlet pipe 130 still keeps the existence of the repulsive magnetic force (the existence duration is preset 2-10 s) after no water flows out, at this time, the water inlet pipe 130 keeps an open state and is incorporated with partial air until the power supply is cut off, the repulsive magnetic force disappears, the float valve 230 descends to the pipe orifice of the water outlet pipe 130 under the action of gravity, and the valve is closed; at the same time, as the liquid level drops, the floating ball 210 also returns to the low liquid level state (the floating ball is at the solid line 210), the connecting rope 260 returns to the relaxed state, and the system returns to the state of (1).
In the state of (1), a small amount of air is always contained in the water outlet pipe 130, so that the nitrified liquid reflux pulse water distribution device provided in embodiment 2 is suitable for water distribution in an aerobic biological tank.
Embodiment 2 further provides a wastewater biochemical treatment unit, which comprises the nitrifying liquid reflux pulse water distribution device and a biochemical tank 300 communicated with the water outlet pipe; in the biochemical tank 300, the water outlet of the water outlet pipe 300 is disposed at a position close to the bottom of the biochemical tank 300. The biochemical tank 300 is an aerobic tank.
Example 3
As shown in fig. 5 (fig. 5 is a schematic structural diagram of a nitrifying liquid reflux pulse water distribution device provided in embodiment 2), embodiment 3 provides another nitrifying liquid reflux pulse water distribution device, and the specific structure is that, on the basis of the nitrifying liquid reflux pulse water distribution device provided in embodiment 1, the following structure is further provided:
the third electromagnetic response component 330 is arranged on the float valve 230, and the fourth electromagnetic response component 340 is arranged on the orifice of the water outlet pipe;
the third electromagnetic response component 330 and the fourth electromagnetic response component 340 are designed to generate a magnetic attraction force, when the liquid level in the tank 100 passes through a preset position, the magnetic attraction force is started, and when the liquid level in the tank 100 is higher than the preset position of the pipe orifice of the water outlet pipe 130, the magnetic attraction force is closed; the preset position is higher than the orifice of the water outlet pipe 130; the attractive magnetic force is less than the buoyancy of the float valve;
the preset position is 1-5 cm higher than the pipe orifice of the water outlet pipe.
The magnetic forces of the third electromagnetic response unit 330 and the fourth electromagnetic response unit 340 can be controlled by signals, which belongs to the prior art in the field, and an internal power supply can be disposed inside the third electromagnetic response unit 330 (or the fourth electromagnetic response unit 340) by way of example, and an infinite signal starting device can be configured. The sensing device of the wireless signal starting device is arranged at a position of the liquid level in the box 100 higher than the preset position of the pipe orifice of the water outlet pipe 130 and is used for sensing whether the liquid level is higher than the preset position of the pipe orifice of the water outlet pipe 130.
The working principle of the nitrifying liquid reflux pulse water distribution device provided in the embodiment 3 is as follows:
(1) When the tank 100 is not in water, the float valve 230 and the pipe orifice of the water outlet pipe 130 are closed, the water outlet pipe 130 is in a closed state, the floating ball 210 is in a low liquid level state (the liquid level is 20, the floating ball is in a dotted line 210), the connecting rope 260 is in a loose state, and the mixed sewage cannot enter the biochemical tank 300; the third electromagnetic response member 330 and the fourth electromagnetic response member 340 have attractive magnetic forces at this time;
(2) When the liquid level in the tank body 100 passes through a preset position (1-5 cm higher than the pipe orifice of the water outlet pipe), the attractive magnetic force is cut off, and when the liquid level in the tank body 100 continuously rises, the floating ball 210 slowly rises along with the liquid level, and the connecting rope 260 is in a tensioning state; as water pressure continues to act on the float valve 230, the float valve is always closed and the outlet pipe 130 is always closed.
(3) As the nitrified liquid backflow water inlet pipe 110 and the sewage total water inlet pipe 120 are continuously injected into the water inlet, the liquid level is continuously increased, after the liquid level is higher than the set liquid level, the buoyancy of the floating ball 210 is increased until the first end 251 of the lever 250 is pulled up, the lever 250 lifts the connecting rod 240 together, the float valve 230 overcomes the water pressure and the attraction magnetic force under the action of the limit protrusion 243 of the connecting rod 240, breaks away from the pipe orifice of the water outlet pipe 130, and floats to the lower part of the lever 250 under the action of the buoyancy, and the sewage mixed in the tank 100 instantaneously enters the biochemical tank 300 through the water outlet pipe 130; because the wastewater belongs to instantaneous inflow and has larger flow velocity, the sewage and the deposited sludge in the biochemical tank can be uniformly mixed.
(4) When the sewage in the tank 100 flows out to the liquid level to reach the preset position (1-5 cm higher than the pipe orifice of the water outlet pipe), the third electromagnetic response component 330 and the fourth electromagnetic response component 340 are started, the float valve 230 is quickly sucked by the attraction magnetic force, and the valve is closed, and at the moment, the liquid level does not reach the pipe orifice of the water outlet pipe 130 yet, so that the air is prevented from entering; at the same time, as the liquid level drops, the floating ball 210 also returns to the low liquid level state (the floating ball is at the solid line 210), the connecting rope 260 returns to the relaxed state, and the system returns to the state of (1).
Embodiment 3 further provides a wastewater biochemical treatment unit, which comprises the nitrified liquid reflux pulse water distribution device and a biochemical tank 300 communicated with the water outlet pipe; in the biochemical tank 300, the water outlet of the water outlet pipe 300 is disposed at a position close to the bottom of the biochemical tank 300. The biochemical tank 300 is an anaerobic tank and/or an anoxic tank.
In an optional specific embodiment, the nitrifying liquid backflow pulse water distribution device is connected with more than 2 water outlet pipes, and each water outlet pipe is correspondingly provided with a pulse control unit; and each water outlet pipe is in different water outlet directions of the biochemical tank close to the bottom. The sludge at the bottom of the biochemical pool is disturbed by different water outlet modes.
In alternative embodiments, there is also provided a wastewater treatment system comprising one or a combination of at least two of the wastewater biochemical treatment units described in examples 1-3.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (8)
1. The utility model provides a nitrifying liquid backward flow pulse water distribution device which characterized in that, nitrifying liquid backward flow pulse water distribution device includes:
the box body is connected with a nitrifying liquid backflow water inlet pipe, a total water inlet pipe and a water outlet pipe; the pipe orifice of the water outlet pipe is positioned at the bottom of the box body;
the pulse control unit comprises a floating ball, a guide rod, a float valve and a connecting rod;
the floating ball can move up or down along with the liquid level position and is used for sensing the liquid level position in the box body, and a through hole is formed in the floating ball; the guide rod is arranged in the box body, penetrates through the through hole of the floating ball and is used for limiting the movement direction of the floating ball; the guide rod is arranged at the bottom and the top of the box body; the float valve is arranged to switch the orifice of the water outlet pipe; the connecting rod penetrates through the valve body of the float valve and is in sliding connection with the float valve; a first end of the connecting rod is provided with a limiting protrusion, and a second end of the connecting rod responds to the upward or downward movement of the floating ball; the connecting rod is designed in such a way that the floating ball ascends to the highest position, the second end of the connecting rod is positioned at the highest position, the floating ball is pulled away from the pipe orifice of the water outlet pipe through the limiting protrusion, the floating ball descends to the lowest position, the second end of the connecting rod is positioned at the lowest position, the floating ball valve can freely slide to the pipe orifice of the water outlet pipe, and the water outlet pipe is closed;
the float valve is provided with a first electromagnetic response component, and the orifice of the water outlet pipe is provided with a second electromagnetic response component;
the first electromagnetic response component and the second electromagnetic response component are designed to generate repulsive magnetic force, the repulsive magnetic force is started after the water outlet pipe is opened, the power supply is cut off after the water outlet pipe orifice is free from water circulation for a preset time, and the repulsive magnetic force disappears.
2. The nitrified liquid reflux pulse water distribution device according to claim 1, wherein the response of the second end of the connecting rod and the upward or downward movement of the floating ball is realized by the following structure:
the nitrifying liquid reflux pulse water distribution device further comprises a lever, and a rod body of the lever is rotatably and movably connected with the second end of the connecting rod so as to ensure that the connecting rod is always in a vertical state; the first end of the lever is connected with the floating ball through a connecting rope, and the second end of the lever is movably connected with the box body at a fixed point and can rotate around the fixed point.
3. The nitrified liquid reflux pulse water distribution device according to claim 1, wherein the float valve is a cake-shaped float valve matched with the orifice of the water outlet pipe, and the density of the float valve is less than that of water.
4. The nitrifying liquid reflux pulse water distribution device according to claim 1, wherein the predetermined time is 2-10 s.
5. A wastewater biochemical treatment unit, which is characterized by comprising the nitrified liquid reflux pulse water distribution device according to one of claims 1-4 and a biochemical tank communicated with the water outlet pipe; in the biochemical tank, a water outlet of the water outlet pipe is arranged at a position close to the bottom of the biochemical tank;
the biochemical pool is an aerobic pool, a first electromagnetic response component arranged on the float valve and a second electromagnetic response component arranged on the pipe orifice of the water outlet pipe are designed to generate repulsive magnetic force, the water outlet pipe is started after being opened, the pipe orifice of the water outlet pipe is free of water circulation for a preset time, a power supply is cut off, and the repulsive magnetic force disappears.
6. The biochemical treatment unit for wastewater according to claim 5, wherein the nitrifying liquid backflow pulse water distribution device is connected with more than 2 water outlet pipes, and each water outlet pipe is correspondingly provided with a pulse control unit; and each water outlet pipe is in different water outlet directions of the biochemical tank close to the bottom.
7. The biochemical treatment unit for wastewater according to claim 5, wherein the predetermined time is 2 to 10 seconds.
8. A wastewater treatment system, characterized in that the wastewater treatment system comprises a wastewater biochemical treatment unit according to any one of claims 5 to 7.
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| CN202111660174.7A CN114275882B (en) | 2021-12-30 | 2021-12-30 | Nitrifying liquid reflux pulse water distribution device and wastewater biochemical treatment unit comprising same |
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| CN101864789A (en) * | 2010-06-08 | 2010-10-20 | 王耀堂 | Volume type rain early-stage split-flow device |
| JP5126337B2 (en) * | 2010-10-04 | 2013-01-23 | 株式会社フクハラ | Float type drain trap and drain water discharge method |
| CN203373168U (en) * | 2013-06-24 | 2014-01-01 | 东莞道汇环保科技有限公司 | Quantitative dosing device of water treatment equipment |
| CN109356232B (en) * | 2018-11-28 | 2020-05-05 | 厦门理工学院 | Self-cleaning water tank |
| CN110526407B (en) * | 2019-09-06 | 2021-09-28 | 重庆大学 | Pulse water distribution device |
| CN113280120B (en) * | 2021-07-22 | 2021-09-28 | 江苏沃泰冶金设备有限公司 | Dual float valve, drainer, control method, and computer-readable storage medium |
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