CN116282606B - Efficient integrated medical wastewater treatment method - Google Patents
Efficient integrated medical wastewater treatment method Download PDFInfo
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- CN116282606B CN116282606B CN202310379696.2A CN202310379696A CN116282606B CN 116282606 B CN116282606 B CN 116282606B CN 202310379696 A CN202310379696 A CN 202310379696A CN 116282606 B CN116282606 B CN 116282606B
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- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 305
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 236
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 236
- 239000001301 oxygen Substances 0.000 claims abstract description 236
- 239000007788 liquid Substances 0.000 claims abstract description 203
- 230000000694 effects Effects 0.000 claims abstract description 131
- 238000005276 aerator Methods 0.000 claims abstract description 56
- 238000000034 method Methods 0.000 claims abstract description 55
- 239000012530 fluid Substances 0.000 claims abstract description 8
- 239000011259 mixed solution Substances 0.000 claims abstract description 7
- 239000007791 liquid phase Substances 0.000 claims abstract description 6
- 239000007921 spray Substances 0.000 claims description 15
- 230000002093 peripheral effect Effects 0.000 claims description 13
- 239000002351 wastewater Substances 0.000 claims description 7
- 230000003993 interaction Effects 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 238000005507 spraying Methods 0.000 abstract description 14
- 230000015556 catabolic process Effects 0.000 abstract description 3
- 238000006731 degradation reaction Methods 0.000 abstract description 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 10
- 239000003344 environmental pollutant Substances 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000005273 aeration Methods 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 244000000010 microbial pathogen Species 0.000 description 1
- 238000006213 oxygenation reaction Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F7/00—Aeration of stretches of water
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/20—Jet mixers, i.e. mixers using high-speed fluid streams
- B01F25/21—Jet mixers, i.e. mixers using high-speed fluid streams with submerged injectors, e.g. nozzles, for injecting high-pressure jets into a large volume or into mixing chambers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/20—Jet mixers, i.e. mixers using high-speed fluid streams
- B01F25/28—Jet mixers, i.e. mixers using high-speed fluid streams characterised by the specific design of the jet injector
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/003—Wastewater from hospitals, laboratories and the like, heavily contaminated by pathogenic microorganisms
-
- 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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Abstract
The invention provides a high-efficiency integrated medical wastewater treatment method, which comprises the following steps: step 10), installing a regulator in a runner of the submersible centrifugal aerator; step 20), installing a submersible centrifugal aerator into an aerobic tank; step 30) starting the submerged motor pump, dividing the steam-water mixed liquid in the flow channel into two fluid flows by the flow dividing plate after entering the regulator, respectively spraying the two fluid flows outwards along the inclined directions of the first flow dividing surface and the second flow dividing surface, gradually increasing the pressure of the two steam-water mixed liquid in the flowing process, and moving a certain distance after spraying; moreover, two steam-water mixed liquids obliquely sprayed by a single flow channel collide and cut with the steam-water mixed liquid phases obliquely sprayed by two adjacent flow channels respectively; and (3) oxygen transfer is carried out after the steam-water mixed solution enters the water body, so that the water body is oxygenated. The high-efficiency integrated medical wastewater treatment method provided by the invention improves the dissolved oxygen in the aerobic tank, thereby improving the degradation effect of organic matters and improving the quality of effluent.
Description
Technical Field
The invention belongs to the technical field of wastewater treatment, and particularly relates to a high-efficiency integrated medical wastewater treatment method.
Background
The medical wastewater has complex components and contains a large amount of toxic and harmful substances such as pathogenic microorganisms, chemical pollutants and radioactive pollutants, and the chemical pollutants must be strictly controlled, otherwise, the water, the soil and the environment near the medical institution are adversely affected. For medical wastewater, integrated medical wastewater treatment equipment is generally adopted for treatment, and comprises a grid tank, a regulating tank, an anaerobic tank, an aerobic tank, a sedimentation tank, a disinfection tank and a sludge tank. Wherein, the aerobic tank is a key process of the integrated medical wastewater treatment equipment, and an aerator is arranged in the aerobic tank to oxygenate the medical wastewater, so that oxygen is dissolved in the medical wastewater and fully contacts with the biomembrane, and organic matters are further decomposed into inorganic matters through biological adsorption, thereby achieving the effect of removing pollutants. However, the existing submerged centrifugal aerator is utilized to carry out oxygenation, so that the phenomenon of unbalanced dissolved oxygen exists, and the quality of effluent water is reduced, which is mainly characterized in the following aspects:
1. because the aerator is arranged at the bottom of the tank, the dissolved oxygen effect of the bottom of the tank is better, the dissolved oxygen effect close to the liquid level is poorer, and the dissolved oxygen amount difference at different depths is larger.
2. When different working conditions, such as water depth changes, the dissolved oxygen distribution in the depth direction can be influenced, and the expected dissolved oxygen effect can not be achieved.
3. The conventional submerged centrifugal aerator cannot adjust the dissolved oxygen in different depths, different positions or spaces.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the high-efficiency integrated medical wastewater treatment method is provided, and the dissolved oxygen in the aerobic tank is improved, so that the degradation effect of organic matters is improved, and the quality of effluent is improved.
In order to solve the technical problems, the embodiment of the invention provides a high-efficiency integrated medical wastewater treatment method, which comprises the following steps:
step 10), installing a regulator in a flow channel of the submerged centrifugal aerator, wherein the regulator comprises a hollow cylindrical body and a splitter plate, and the splitter plate is axially arranged in the body along the body; the splitter plate is provided with a first split surface and a second split surface, and the included angle between the first split surface and the interface is alpha 1 The included angle between the second flow dividing surface and the interface is alpha 2 And alpha is 1 ＞0°，α 2 ＞0°；
Step 20), installing a submersible centrifugal aerator into an aerobic tank;
step 30) starting a submerged motor pump, wherein the submerged motor pump drives an impeller to rotate, and steam-water mixed liquid formed in a mixing disc enters a peripheral flow channel of the mixing disc; the steam-water mixed liquid flows to the outlet end of the flow channel, enters the regulator and is divided into two fluid flows by the flow dividing plate, and the two fluid flows along the first flow dividing surface and the second flow dividing surface respectively towards the outlet end of the flow channel and is sprayed outwards along the inclined directions of the first flow dividing surface and the second flow dividing surface respectively; simultaneously, the speed of the two steam-water mixed liquids is gradually increased in the process of flowing to the outlet end of the flow channel, and the two steam-water mixed liquids can move for a certain distance after being sprayed out of the flow channel; moreover, two steam-water mixed liquids obliquely sprayed by a single flow channel collide and cut with the steam-water mixed liquid phases obliquely sprayed by two adjacent flow channels respectively, so that water drops and bubbles become finer; oxygen transfer is carried out after the steam-water mixed solution enters the water body, so that the water body is oxygenated; for a single flow passage provided with the regulator, the oxygen dissolving effect in the direction perpendicular to the dividing plane interface is improved; if all the flow passages distributed circumferentially are provided with the regulators, the oxygen dissolving effect of each circumferential direction perpendicular to the corresponding interface direction is improved, and then the oxygen dissolving effect in the three-dimensional space in the aerobic tank is improved.
As a further improvement of the embodiment of the invention, in the step 10), if the process needs to improve the oxygen dissolving effect of one or more directions of the circumferential direction of the submerged centrifugal aerator in the aerobic tank above and below the horizontal plane of the axis of the runner, alpha is installed in the runner of the submerged centrifugal aerator in the corresponding direction 1 ＝α 2 Setting the interface of the splitter plate of the regulator to a horizontal state;
in the step 30), the flow channel is sprayed out of two steam-water mixed liquids which are obliquely upward and downward and are distributed in the vertical direction by taking the interface of the flow distribution plate as a boundary, and the two steam-water mixed liquids interact with the surrounding water body, so that oxygen in the steam-water mixed liquid is fused into the water body, the oxygen dissolving effect of the bottom, the middle and the upper part of the pool in the corresponding direction is enhanced, and the oxygen dissolving coverage range and the oxygen dissolving effect in the depth direction are improved; if all flow passages distributed circumferentially are provided with regulators, the dissolved oxygen coverage and dissolved oxygen effect on each vertical surface in the circumferential direction are improved.
As a further improvement of the embodiment of the invention, in the step 10), if the process needs to improve the oxygen dissolving effect of one or more directions of the circumferential direction of the submerged centrifugal aerator in the aerobic tank on the horizontal plane of the axis of the runner, installing alpha in the runner in the corresponding direction of the submerged centrifugal aerator 1 ＝α 2 Setting the interface of the splitter plate of the regulator to a vertical state;
in the step 30), the flow channel is sprayed out of two steam-water mixed liquids which are distributed in the horizontal direction and incline to the left and right by taking the interface of the flow distribution plate as a boundary, and the two steam-water mixed liquids interact with the surrounding water body, so that oxygen in the steam-water mixed liquid is fused into the water body, and the dissolved oxygen coverage and the dissolved oxygen effect on the horizontal plane where the axis of the flow channel in the corresponding direction is positioned are improved; if all flow passages distributed circumferentially are provided with regulators, the dissolved oxygen coverage range and the dissolved oxygen effect of all directions on the horizontal plane where the flow passage axes are positioned are improved.
As a further improvement of the embodiment of the invention, in the step 10), if the process needs to improve the oxygen dissolving effect of one or more directions of the circumferential direction of the submerged centrifugal aerator in the aerobic tank on a plane inclined to the horizontal plane, alpha is installed in a runner of the submerged centrifugal aerator in the corresponding direction 1 ＝α 2 Setting the interface of the splitter plate of the regulator to an inclined state;
in the step 30), the flow channel sprays two steam-water mixed liquids which are distributed in the direction perpendicular to the interface by taking the inclined interface as a boundary, and the two steam-water mixed liquids interact with the surrounding water body, so that oxygen in the steam-water mixed liquids is fused into the water body, and the dissolved oxygen coverage range and the dissolved oxygen effect in the direction perpendicular to the inclined interface are improved; if all flow passages distributed circumferentially are provided with regulators, the coverage range of dissolved oxygen and the dissolved oxygen effect of each circumferential direction perpendicular to the corresponding inclined interface direction are improved.
As a further improvement of the embodiment of the invention, in the step 10), if the process needs to improve the oxygen dissolving effect of one or more directions of the circumferential direction of the submerged centrifugal aerator in the aerobic tank between the axes of the adjacent flow channels, installing alpha in the two adjacent flow channels in the corresponding directions of the submerged centrifugal aerator 1 ＝α 2 Setting the interface of the regulators to be inclined, and the inclination directions of the interfaces of the two regulators are opposite;
in the step 30), two steam-water mixed liquids which are symmetrically distributed by taking the inclined interfaces as boundaries are sprayed out from two adjacent flow channels, the two steam-water mixed liquids on the inner side collide and cut under the interaction of the two steam-water mixed liquids, the water drops and the air bubbles of the steam-water mixed liquids are cut into finer states, the contact area between the air bubbles and the water drops is increased, so that internal oxygen transfer is firstly carried out between the two steam-water mixed liquids to realize part of internal dissolved oxygen, then the steam-water mixed liquids and the peripheral water body are subjected to external oxygen transfer, and the dissolved oxygen effect between the axes of the adjacent flow channels is improved; the two steam-water mixed liquids at the outer side directly act with the surrounding water body, so that oxygen in the steam-water mixed liquid is fused into the water body.
As a further improvement of the embodiment of the invention, in the step 10), if the process needs to improve the oxygen dissolving effect of one or more directions of the submerged centrifugal aerator in the aerobic tank above or below the horizontal plane where the axis of the runner is located, alpha is installed in the runner of the submerged centrifugal aerator in the corresponding direction 1 ＜α 2 Setting the interface of the flow dividing plate of the regulator to be in a horizontal state, and setting the side of the second flow dividing surface at the side of the dissolved oxygen effect to be increased;
in the step 30), the flow channel is sprayed out of two steam-water mixed liquids which are obliquely downwards and obliquely upwards and are distributed in the vertical direction by taking the interface of the flow distribution plate as a boundary, the flow velocity and coverage area of the steam-water mixed liquid sprayed on the second flow distribution surface side are larger than those of the first flow distribution surface side, so that the oxygen dissolving effect of the second flow distribution surface side is obviously better than that of the first flow distribution surface side, and the oxygen dissolving effect above or below the horizontal plane where the axis of the flow channel is positioned is enhanced; if the dissolved oxygen effect does not meet the required dissolved oxygen requirement, alpha is replaced 2 Larger regulators until the desired dissolved oxygen demand is met.
As a further improvement of the embodiment of the invention, in the step 10), if the process needs to improve the oxygen dissolving effect of one or more directions of the submerged centrifugal aerator in the aerobic tank on one side of the flow channel axis on the horizontal plane of the flow channel axis, alpha is installed in the flow channel of the submerged centrifugal aerator in the corresponding direction 1 ＜α 2 Setting the interface of the flow dividing plate of the regulator to be vertical, and setting the second flow dividing surface side at the side of the dissolved oxygen effect to be improved;
In step 30), the flow channels are ejected to divide the plateThe interface is a boundary, two steam-water mixed liquids which are positioned on the horizontal plane where the axis of the flow channel is positioned and are respectively inclined towards two sides far away from the interface, the flow speed and the coverage area of the steam-water mixed liquid sprayed by the second flow diversion surface side are larger than those of the first flow diversion surface side, so that the oxygen dissolving effect of the second flow diversion surface side is obviously better than that of the first flow diversion surface side, and the oxygen dissolving effect of the side of the axis of the flow channel on the horizontal plane where the axis of the flow channel is positioned is enhanced; if the dissolved oxygen effect does not meet the required dissolved oxygen requirement, alpha is replaced 2 Larger regulators until the desired dissolved oxygen demand is met.
As a further improvement of the embodiment of the invention, in the step 10), if the process needs to improve the oxygen dissolving effect of one or more directions of the circumferential direction of the submerged centrifugal aerator in the aerobic tank on one side of the axis of the runner on a plane inclined to the horizontal plane, alpha is installed in the runner in the corresponding direction of the submerged centrifugal aerator 1 ＜α 2 Setting the interface of the flow dividing plate of the regulator to be inclined, and setting the second flow dividing surface side to the side of improving the dissolved oxygen effect;
in the step 30), the flow channel is sprayed out of two steam-water mixed liquids taking the inclined interface as a boundary, and the two steam-water mixed liquids are respectively inclined towards two sides far away from the interface in the direction vertical to the interface, and the flow speed and the coverage area of the steam-water mixed liquid sprayed on the second flow diversion surface side are larger than those of the first flow diversion surface side, so that the dissolved oxygen effect of the second flow diversion surface side is obviously better than that of the first flow diversion surface side, and the dissolved oxygen effect of the side, which is positioned on the axis of the flow channel, of a plane inclined to the horizontal plane is enhanced; if the dissolved oxygen effect does not meet the required dissolved oxygen requirement, alpha is replaced 2 Larger regulators until the desired dissolved oxygen demand is met.
As a further improvement of the embodiment of the invention, in step 10), if the process needs to improve the oxygen dissolving effect of one or more directions of the submerged centrifugal aerator in the aerobic tank between the axes of the adjacent flow channels, installing alpha in the two adjacent flow channels in the corresponding directions of the submerged centrifugal aerator 1 ＜α 2 The regulator of the regulator is characterized in that the interface of the splitter plate of the regulator is set to be inclined, and the inclination directions of the interfaces of the two regulators are oppositeThe second shunt surfaces of the two regulators are adjacently arranged;
in the step 30), two adjacent flow channels are both sprayed with two steam-water mixed liquids which are asymmetrically distributed by taking the inclined interfaces as boundaries, and the flow velocity and coverage area of the steam-water mixed liquid at the side of the second flow dividing surface are larger than those of the steam-water mixed liquid at the side of the first flow dividing surface; the two steam-water mixed liquids at the side of the second flow dividing surface are interacted to collide and cut, so that the water drops and the air bubbles of the steam-water mixed liquid are cut into finer states, the contact area between the air bubbles and the water drops is increased, the two steam-water mixed liquids firstly carry out internal oxygen transfer to realize partial internal dissolved oxygen, then the steam-water mixed liquid carries out external oxygen transfer with the peripheral water body, and the dissolved oxygen effect between the axes of adjacent flow channels is improved; the two steam-water mixed liquids at the side of the first diversion surface directly act with the surrounding water body, so that oxygen in the steam-water mixed liquid is fused into the water body.
As a further improvement of the embodiment of the invention, in the step 10), if the process needs to improve the oxygen dissolving effect in the whole space in the aerobic tank, alpha is installed in all flow channels of the submersible centrifugal aerator 1 ＝α 2 Or alpha 1 ＜α 2 Setting the interface of the regulators in each flow passage to be vertical, horizontal or inclined respectively, and the interface states of the flow dividing plates of the regulators of adjacent flow passages are different;
in step 30), firstly, two steam-water mixed liquids ejected from each flow channel interact with the surrounding water body, so that the moving path and the ejection coverage range of the steam-water mixed liquid are enlarged; secondly, all the steam-water mixed liquids in the directions perpendicular to the interfaces of the flow dividing plates in the flow channels in different directions in the circumferential direction of the mixing disk interact, so that all the steam-water mixed liquids are mutually fused, flow fields formed by all the steam-water mixed liquids interact, and all the steam-water mixed liquids in the whole space interact; finally, all the vapor-water mixed liquid is mixed with the surrounding water body to drive the vapor-water mixed liquid in the whole space to flow, thereby increasing the coverage area and the oxygen transfer rate and uniformly improving the dissolved oxygen effect of the whole space.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
(1) The regulator with the flow dividing plate is arranged in the flow channel of the submersible centrifugal aerator, the flow dividing plate divides the inner cavity of the body into two channels, and after entering the regulator, the steam-water mixed liquid in the flow channel is divided into two streams which respectively flow along the first flow dividing surface and the second flow dividing surface towards the outlet end direction of the flow channel, and as the first flow dividing surface and the second flow dividing surface incline away from the interface in the flow direction, the two streams of steam-water mixed liquid are sprayed outwards along the inclined directions of the first flow dividing surface and the second flow dividing surface respectively, so that the spraying range of the steam-water mixed liquid of a single flow channel is increased, and the dissolved oxygen range is improved; meanwhile, the cross sectional areas of the two channels in the inner cavity of the body are gradually reduced from the inlet end to the outlet end, so that the pressure of the two steam-water mixed liquids is gradually increased, the moving path of the steam-water mixed liquid of a single flow channel is increased, and the oxygen dissolving effect is improved. Two steam-water mixed liquids obliquely sprayed from a single flow passage collide with steam-water mixed liquid phases obliquely sprayed from two adjacent flow passages respectively, so that water drops and air become finer, the oxygen transfer rate is improved, and the dissolved oxygen effect is improved.
(2) If the interface of the flow dividing plate of the regulator is vertical to the horizontal plane, the oxygen dissolving effect in the horizontal direction is improved; if the interface of the flow dividing plate of the regulator is parallel to the horizontal plane, the oxygen dissolving effect in the depth direction is improved; if the included angle between the interface of the flow dividing plate of the regulator and the horizontal plane is larger than 0 DEG and smaller than 90 DEG, the oxygen dissolving effect in the inclined direction is improved.
(3) The regulator is not fixedly arranged in the flow channel, a plurality of regulating holes for fixing are formed in the circumferential direction of the body of the regulator, and the regulator can be rotated to fix according to process requirements, so that the included angle between the interface of the flow distribution plate and the horizontal plane is adjusted, and the required dissolved oxygen effect is obtained.
Drawings
FIG. 1 is a schematic view of an integrated medical wastewater treatment facility in an embodiment of the present invention;
FIG. 2 is a schematic view of the submersible centrifugal aerator of FIG. 1;
FIG. 3 is a schematic view of the structure of the mixing disk of FIG. 2;
fig. 4 is a cross-sectional view of the regulator of fig. 2.
The drawings are as follows: aerobic tank 10, submerged centrifugal aerator 20, air inlet pipe 201, submerged electric pump 202, air inlet disk 203, mixing disk 204, base 205, impeller 206, mixing chamber 2041, runner 2042, regulator 207, body 2071, splitter plate 2072, first splitter face 20721, second splitter face 20722, adjustment holes 2073, fastener 2074, length h of splitter plate extension body end, first splitter plate slope alpha 1 Inclination alpha of second flow dividing plate 2 。
Detailed Description
The technical scheme of the invention is described in detail below with reference to the accompanying drawings.
The embodiment of the invention provides a high-efficiency integrated medical wastewater treatment method, which comprises the following steps of:
Step 10) a regulator 207 is installed in the flow path of the submersible centrifugal aerator 20.
As shown in fig. 2, the submersible centrifugal aerator 20 includes a submersible electric pump 202, an air inlet disc 203, a mixing disc 204, a base 205, an air inlet pipe 201, and an impeller 206, which are sequentially connected from top to bottom. The rotor shaft end of the submersible pump 202 passes through the inlet disk 203 and is connected to an impeller 206 located in the mixing disk 204 for driving the impeller 206 in rotation. The air inlet plate 203 is provided with a cavity, the lower end of the air inlet pipe 201 is communicated with the cavity of the air inlet plate 203, and when in use, the upper end of the air inlet pipe 201 is exposed out of the water surface. The mixing disk 204 is provided with a mixing cavity 2041 with a circular cross section, as shown in fig. 3, a plurality of flow channels 2042 communicated with the mixing cavity are tangentially arranged along the periphery of the mixing cavity, the flow channels 2042 are smooth circular through holes, and the number of the flow channels 2042 is 6-12. The mixing chamber communicates with the cavity of the inlet disk 203.
The regulator 207 includes a hollow cylindrical body 2071 and a baffle 2072, the baffle 2072 being disposed in the body 2071 in the body axial direction. The baffle 2072 has a first baffle 20721 and a second baffle 20722, the interface of the baffle 2072 being the plane of intersection of the body axis with the first and second baffle. As shown in FIG. 4, the longitudinal section of the regulator is taken in the longitudinal direction, where the longitudinal section is the plane containing the longitudinal cut of the body axis, the splitter plate The longitudinal section of the splitter plate is triangular, and the longitudinal section of the splitter plate is perpendicular to the interface of the splitter plate. The included angle between the first flow dividing surface and the interface is alpha 1 The included angle between the second flow dividing surface and the interface is alpha 2 And alpha is 1 ＞0°，α 2 > 0 deg.. In fig. 4, the inlet end of the body is located below, the outlet end of the body is located above, and the first and second flow dividing surfaces are gradually inclined outwards in the flow direction, i.e. the distance between the first and second flow dividing surfaces gradually increases from the inlet end to the outlet end. The splitter plate 2072 divides the interior cavity of the body 2071 into two channels with the cross-sectional area of the two channels decreasing from the inlet end to the outlet end. Preferably, the outer diameter of the body 2071 is adapted to the inner diameter of the mixing disk 204 flow passage. In order to install the body in the flow channel, the inner diameter of the flow channel at the position of the installation body is slightly increased, the outer diameter of the body is equal to the inner diameter of the flow channel at the position of the installation body in the flow channel, and the inner diameter of the body is equal to the inner diameter of the flow channel at the position of the non-installation body, so that no gap exists between the outer wall of the body and the inner wall of the flow channel, and all the steam-water mixed liquid in the flow channel enters the inner cavity of the body after reaching the regulator 207. Preferably, the outlet end of the body 2071 is flush with the outlet end of the mixing disk 204 flow passage. The regulator is installed at the runner end, and the exit end of body is not located the runner, can prevent from the sprayed soda mixed solution of body slope to touch the runner wall back again and be on a parallel with the axis blowout, guarantees the adjustment effect that makes the outwards slope of soda mixed solution spray, increases the spray coverage of soda mixed solution, improves dissolved oxygen effect.
Step 20) the submerged centrifugal aerator 20 is installed into the aerobic tank 10 as shown in fig. 1.
Step 30), the submersible pump 202 is started, the submersible pump 202 drives the impeller 206 to rotate, negative pressure is formed in the mixing disc 204 by high-speed water flow, air is sequentially sucked into the mixing disc 204 through the air inlet pipe 201 and the air inlet disc 203 to be mixed with water, steam-water mixed liquid is formed, and the steam-water mixed liquid enters the peripheral flow channels of the mixing disc 204. The steam-water mixed liquid flows toward the outlet end of the flow passage, and enters the regulator 207 and is divided into two streams by the dividing plate 2072, and the two streams respectively flow toward the outlet end of the flow passage along the first dividing surface 20721 and the second dividing surface 20722, and are respectively ejected outward in the inclined directions of the first dividing surface and the second dividing surface. Simultaneously, the speed of the two steam-water mixed liquids is gradually increased in the process of flowing to the outlet end of the flow channel, and the two steam-water mixed liquids can move for a certain distance after being sprayed out of the flow channel. Moreover, two steam-water mixed liquids obliquely sprayed from a single flow channel collide and cut with the steam-water mixed liquid phases obliquely sprayed from two adjacent flow channels respectively, so that water drops and bubbles become finer. And (3) oxygen transfer is carried out after the steam-water mixed solution enters the water body, so that the water body is oxygenated.
According to the high-efficiency integrated medical wastewater treatment method, the submersible centrifugal aerator arranged in the aerobic tank is provided with the regulator with the flow dividing plate in the flow channel of the mixing disc, the flow dividing plate divides the inner cavity of the body into two channels, the steam-water mixed liquid in the flow channel enters the regulator and is divided into two streams of fluid, the two streams of fluid respectively flow along the first flow dividing surface and the second flow dividing surface towards the outlet end direction of the flow channel, and as the first flow dividing surface and the second flow dividing surface are gradually inclined away from the interface in the flow direction, the two streams of steam-water mixed liquid are respectively sprayed outwards along the inclined directions of the first flow dividing surface and the second flow dividing surface, so that the spraying coverage range of the steam-water mixed liquid of a single flow channel in the direction perpendicular to the interface is increased, and the dissolved oxygen area is increased, thereby the dissolved oxygen effect is improved; meanwhile, the cross sectional areas of the two channels in the inner cavity of the body are gradually reduced from the inlet end to the outlet end, so that the speed of the two steam-water mixed liquid is gradually increased, the moving path of the steam-water mixed liquid of a single flow channel is increased, the dissolved oxygen area is increased, and the dissolved oxygen effect is improved. Two steam-water mixed liquids obliquely sprayed from a single flow passage collide with steam-water mixed liquid phases obliquely sprayed from two adjacent flow passages respectively, so that water drops and air become finer, the oxygen transfer rate is improved, and the dissolved oxygen effect is improved. According to the high-efficiency integrated medical wastewater treatment method, the dissolved oxygen in the aerobic tank is increased, so that the degradation effect of organic matters is improved, and the quality of effluent is improved.
Preferably, the dividing surface of the dividing plate 2072 of the regulator is perpendicular to the horizontal plane, so that the steam-water mixed liquid in the flow channel is divided into two left and right inclined steam-water mixed liquids distributed in the horizontal direction, the spraying coverage in the horizontal direction is increased, and the oxygen dissolving effect in the horizontal direction is improved. Or, the dividing surface of the dividing plate 2072 of the regulator is parallel to the horizontal plane, and divides the vapor-water mixed liquid in the flow channel into two vapor-water mixed liquids which are distributed in the vertical direction and incline up and down, so that the spraying coverage range in the vertical direction is increased, and the oxygen dissolving effect in the vertical direction is improved. Or, the included angle between the interface of the splitter plate 2072 of the regulator and the horizontal plane is larger than 0 ° and smaller than 90 °, so that the vapor-water mixed liquid in the flow channel is divided into two vapor-water mixed liquids distributed in the inclined direction, the spraying coverage range in the inclined direction is increased, and the oxygen dissolving effect in the inclined direction is improved.
Preferably, 3 DEG alpha or less 1 ≤15°，3°≤α 2 Less than or equal to 15 degrees. The larger the inclination angle of the first flow dividing surface and the second flow dividing surface is, the larger the speed of the sprayed soda water mixed liquid is, the larger the spraying range to the outside is, and the larger the moving path and the service range of the soda water mixed liquid are, the better the oxygen dissolving effect is.
As a preferred example, alpha 1 ＝α 2 . The first split surface 20721 and the second split surface 20722 are symmetrically arranged at the interface, the two channels divided by the split plate to the inner cavity of the body are symmetrically arranged, two steam-water mixed liquids which are symmetrical to each other are generated, and the spraying coverage area of the two steam-water mixed liquids is also symmetrical at the interface of the split plate, so that the dissolved oxygen is effectively improved.
When the interface of the flow dividing plate is in a horizontal state, the flow channel sprays two steam-water mixed liquids which are symmetrically distributed in the vertical direction (taking the interface of the flow dividing plate as the interface) and obliquely upwards and downwards, and the two steam-water mixed liquids interact with the peripheral water body, so that oxygen in the steam-water mixed liquids is fused into the water body, the coverage range in the depth direction and the oxygen dissolving effect are improved, and the oxygen dissolving effect of the bottom, the middle and the upper part of the pool is enhanced. All the flow channels are circumferentially distributed on the horizontal plane, so that the coverage range and the dissolved oxygen effect on each circumferential vertical plane are improved. When the interface of the flow distribution plate is in a vertical state, the flow channel sprays two steam-water mixed liquids which are symmetrically distributed in the horizontal direction (taking the interface of the flow distribution plate as the interface) and incline to the left and right, and the two steam-water mixed liquids interact with the surrounding water body, so that oxygen in the steam-water mixed liquid is fused into the water body, and the coverage range and the dissolved oxygen effect in the horizontal direction are improved. All the flow channels are circumferentially distributed on the horizontal plane, so that the circumferential coverage range and the dissolved oxygen effect on the horizontal plane are improved. When the dividing plane of the dividing plate is in an inclined state, namely the dividing plane forms a certain angle with the horizontal plane, the inclined angle is determined according to the dissolved oxygen requirement of the process. The flow channel sprays two steam-water mixed liquids which are symmetrically distributed by taking the interface of the inclined flow distribution plate as a boundary, and the two steam-water mixed liquids interact with the surrounding water body, so that oxygen in the steam-water mixed liquids is fused into the water body, and the dissolved oxygen effect in the direction perpendicular to the inclined interface is improved. All the flow channels are circumferentially distributed on the horizontal plane, so that the oxygen dissolving effect of each circumferential direction perpendicular to the corresponding inclined interface direction is improved.
Two steam-water mixed liquids inclined by taking the dividing plate interface as a boundary are sprayed out by adjacent flow channels, collision and cutting can occur due to interaction, water drops and bubbles of the steam-water mixed liquids are cut into finer states, the contact area of the bubbles and the water drops is increased, internal oxygen transfer is firstly carried out between the two steam-water mixed liquids, partial internal dissolved oxygen is realized, then the steam-water mixed liquids and peripheral water bodies are subjected to external oxygen transfer, and therefore oxygen transfer efficiency is improved, namely the dissolved oxygen effect is improved.
Alternatively, as a preferred example, alpha 1 ＜α 2 . The inclination angle of the second split surface 20722 is larger than that of the first split surface 20721, and the passage outlet cross-sectional area on the side of the second split surface 20722 is smaller than that on the side of the first split surface 20721. Therefore, the velocity of the soda liquid mixture ejected from the second flow-dividing surface side passage is larger than that of the other side, the ejection path is also larger than that of the other side, and the longer the moving path of the soda liquid mixture is, the more oxygen is incorporated into the water body, so that the oxygen dissolution efficiency of the second flow-dividing surface side is higher. Meanwhile, the spraying coverage area of the steam-water mixed liquid sprayed from the channel at the side of the second flow dividing surface is larger than that of the other side, the larger the coverage area is, the better the oxygen dissolving effect is, and more oxygen is fused into the water body, so that the oxygen dissolving efficiency at the side of the second flow dividing surface is higher.
When the interface of the flow dividing plate is in a horizontal state, the flow channel sprays two vapor-water mixed liquids which are distributed in the vertical direction (taking the interface of the flow dividing plate as the interface) and are obliquely upwards and downwards, and the moving path and the spraying coverage of the vapor-water mixed liquid on the second flow dividing surface side are larger than those of the vapor-water mixed liquid on the first flow dividing surface side. The two steam-water mixed liquids interact with the surrounding water body, so that oxygen in the steam-water mixed liquids is fused into the water body, the oxygen dissolving effect in the depth direction is improved, and the oxygen dissolving effect on the side of the second flow dividing surface is better. All the flow channels are circumferentially distributed on the horizontal plane, so that the oxygen dissolving effect on each circumferential vertical plane is improved. When the dividing surface of the dividing plate is in a vertical state, the flow channel sprays two steam-water mixed liquids which are asymmetrically distributed in the horizontal direction (taking the dividing surface of the dividing plate as the dividing surface) and incline to the left and right, and the moving path and the spraying coverage of the steam-water mixed liquid on the side of the second dividing surface are larger than those of the steam-water mixed liquid on the side of the first dividing surface. The two steam-water mixed liquids interact with the surrounding water body, so that oxygen in the steam-water mixed liquids is fused into the water body, the oxygen dissolving effect in the horizontal direction is improved, and the oxygen dissolving effect on the side of the second flow dividing surface is better. All the flow channels are circumferentially distributed on the horizontal plane, so that the circumferential oxygen dissolving effect on the horizontal plane is improved. When the dividing plane of the dividing plate is in an inclined state, namely the dividing plane forms a certain angle with the horizontal plane, the inclined angle is determined according to the dissolved oxygen amount required by the process. The flow channel sprays two steam-water mixed liquids which are asymmetrically distributed by taking an inclined interface as a boundary, and the moving path and the spraying coverage of the steam-water mixed liquid at the side of the second diversion surface are larger than those of the steam-water mixed liquid at the side of the first diversion surface. The two steam-water mixed liquids interact with the surrounding water body, so that oxygen in the steam-water mixed liquids is fused into the water body, the oxygen dissolving effect in the direction perpendicular to the inclined interface is improved, and the oxygen dissolving effect on the side of the second flow dividing surface is better. All the flow channels are circumferentially distributed on the horizontal plane, so that the oxygen dissolving effect of each circumferential direction perpendicular to the corresponding inclined interface direction is improved.
Two steam-water mixed liquids inclined by taking the dividing plate interface as a boundary are sprayed out by adjacent flow channels, collision and cutting can occur due to interaction, water drops and bubbles of the steam-water mixed liquids are cut into finer states, the contact area of the bubbles and the water drops is increased, internal oxygen transfer is firstly carried out between the two steam-water mixed liquids, partial internal dissolved oxygen is realized, then the steam-water mixed liquids and peripheral water bodies are subjected to external oxygen transfer, and therefore oxygen transfer efficiency is improved, namely the dissolved oxygen effect is improved.
As a preferred example, the body 2071 is provided with an adjusting hole 2073, the side wall of the flow channel of the mixing disk 204 is provided with a fixing hole, and the adjuster 207 is fixed in the flow channel of the mixing disk 204 by penetrating the fastener 2074 into the adjusting hole 2073 and the fixing hole. Further preferably, the number of the adjustment holes 2073 is 4 to 12, and the adjustment holes are equally spaced in the circumferential direction of the body 2071. The adjusting holes are all used for being fixed with the flow channel, and the adjusting holes respectively correspond to the states of the interfaces of the various flow dividing plates, so that two steam-water mixed liquids in various directions can be formed, and the space oxygen dissolving effect is improved. The regulator 207 is rotated to place the dividing plane of the dividing plate in a desired orientation according to the process requirement, and is fixed through the corresponding regulating holes, thereby obtaining the oxygen dissolving effect required by different positions.
Specifically, there may be nine preferred examples as follows:
first preferred embodiment
In step 10), if the process requires an increase in the oxygen dissolution efficiency in one or more directions in the circumferential direction of the mixing disk above and below the level of the flow path axis, i.e., in the depth direction, then a may be installed in the flow path 1 ＝α 2 The regulator of (2) sets the interface of the flow dividing plate of the regulator to a horizontal state.
In step 30), the flow channel sprays two vapor-water mixed liquids which are distributed in the vertical direction (taking the interface of the flow dividing plate as a boundary) and obliquely upwards and downwards, and the two vapor-water mixed liquids interact with the peripheral water body, so that oxygen in the vapor-water mixed liquids is fused into the water body, and the dissolved oxygen effect of the bottom, the middle part and the upper part of the pool is enhanced. The coverage range in the depth direction and the dissolved oxygen effect are improved. If all flow passages distributed circumferentially are provided with regulators, the coverage area and the dissolved oxygen effect on each vertical surface in the circumferential direction are improved.
Second preferred embodiment
Step 10) In the process, if the process needs to increase the dissolved oxygen amount of one or more directions in the circumferential direction of the mixing disk on the horizontal plane of the axis of the flow channel, namely, the dissolved oxygen efficiency in the horizontal direction is improved, alpha can be installed in the flow channel 1 ＝α 2 The interface of the splitter plate of the regulator is set to be in a vertical state.
In step 30), the flow channel sprays two vapor-water mixed liquids which are distributed in the horizontal direction (taking the interface of the flow distribution plate as a boundary) and incline to the left and right, and the two vapor-water mixed liquids interact with the surrounding water body, so that oxygen in the vapor-water mixed liquid is fused into the water body, and the coverage area and the dissolved oxygen effect in the horizontal direction are improved. If all flow channels distributed circumferentially are provided with regulators, the coverage range and the dissolved oxygen effect of all directions on the horizontal plane where the axis of the flow channel is located are improved.
Third preferred embodiment
In step 10), if the process requires an increase in the amount of dissolved oxygen in the plane of the mixing disk where one or more directions in the circumference of the mixing disk are inclined to the horizontal, i.e., an increase in the efficiency of dissolved oxygen in the inclined direction, then a may be installed in the flow channel 1 ＝α 2 The interfaces of the flow dividing plates of the regulators in all the flow channels are set to be inclined, namely, the interfaces form a certain angle with the horizontal plane, and the inclination angle is determined according to the dissolved oxygen requirement required by the process.
In the step 30), two steam-water mixed liquids distributed on two sides of the inclined interface are sprayed out of the flow channel, and the two steam-water mixed liquids interact with the surrounding water body, so that oxygen in the steam-water mixed liquids is fused into the water body, and the oxygen dissolving effect in the direction perpendicular to the inclined interface is improved. If all flow passages distributed circumferentially are provided with regulators, the coverage area and the dissolved oxygen effect of each circumferential direction perpendicular to the corresponding inclined interface direction are improved.
Fourth preferred embodiment
In step 10), if the process requires an increase in the dissolved oxygen effect of one or more of the mixing disk circumferential directions between the axes of adjacent flow channels, a may be installed in two adjacent flow channels in that direction 1 ＝α 2 Is arranged to tilt the interface of the regulatorThe inclined state, that is, the interface forms a certain angle with the horizontal plane, the inclined angle is determined according to the dissolved oxygen requirement required by the process, and the inclined directions of the interfaces of the two regulators are opposite.
In step 30), two steam-water mixed liquids which are symmetrically distributed by taking the inclined interfaces as boundaries are sprayed out from two adjacent flow channels, the two steam-water mixed liquids at the inner side collide and cut under interaction, water drops and air bubbles of the steam-water mixed liquids are cut into finer states, the contact area of the air bubbles and the water drops is increased, internal oxygen transfer is firstly carried out between the two steam-water mixed liquids, part of internal dissolved oxygen is realized, then the steam-water mixed liquids and peripheral water bodies are subjected to external oxygen transfer, and the dissolved oxygen effect between the axes of the adjacent flow channels is improved. The two steam-water mixed liquids at the outer side directly act with the surrounding water body, so that oxygen in the steam-water mixed liquid is fused into the water body.
Fifth preferred embodiment
In step 10), if the process requires an increase in the dissolved oxygen effect of one or more of the mixing disk circumferences above or below the level of the aerator flow path axis, a may be installed in the flow path 1 ＜α 2 Regulator (alpha) 1 Unchanged), the interface is set to a horizontal state, and the second split surface side is set to the side where the dissolved oxygen effect is to be increased.
In the step 30), the flow channel sprays two steam-water mixed liquids which are obliquely downward and obliquely upward, and the flow speed and the coverage range of the steam-water mixed liquid sprayed on the second flow distribution surface side are larger than those of the first flow distribution surface side, so that the oxygen dissolving effect of the second flow distribution surface side is obviously better than that of the first flow distribution surface side, and the oxygen dissolving efficiency above or below the aerator is enhanced. If the aeration effect does not meet the required dissolved oxygen requirement, the second inclination angle alpha is changed 2 Larger regulator until the desired requirements are met.
Sixth preferred embodiment
In step 10), if the process requires an increase in the oxygen dissolving effect of one or more of the mixing disk circumferential directions on the horizontal plane of the flow channel axis and on one side of the flow channel axis, a may be installed in the flow channel 1 ＜α 2 (α 1 Unchanged), the interface is set to a vertical state, and the second split surface side is set to a side where the dissolved oxygen effect is to be increased.
In step 30), the flow channel sprays two steam-water mixed liquids which are on the horizontal plane where the axis of the flow channel is located and are respectively inclined towards two sides far away from the axis of the flow channel, and the flow speed and coverage area of the steam-water mixed liquid sprayed on the second flow diversion surface side are larger than those of the first flow diversion surface side, so that the oxygen dissolving effect of the second flow diversion surface side is obviously better than that of the first flow diversion surface side, and the oxygen dissolving efficiency of the flow channel side is enhanced. If the aeration effect does not meet the required dissolved oxygen requirement, the second inclination angle alpha is changed 2 Larger regulator until the desired requirements are met.
Seventh preferred embodiment
In step 10), if the process needs to increase the oxygen dissolving effect of one or more directions of the circumferential direction of the submerged centrifugal aerator 20 in the aerobic tank 10 on the side of the flow passage axis on the plane inclined to the horizontal plane, installing alpha in the flow passage of the submerged centrifugal aerator 20 in the corresponding direction 1 ＜α 2 The regulator of (2) is configured such that the interface of the flow dividing plate of the regulator is set in an inclined state, and the second flow dividing surface side is disposed on the side where the dissolved oxygen effect is to be improved.
In the step 30), the flow channel sprays two steam-water mixed liquids which are inclined by taking the inclined interface as a boundary, are respectively inclined to two sides far away from the interface in the direction vertical to the interface, and the flow speed and coverage range of the steam-water mixed liquid sprayed on the second flow diversion surface side are larger than those of the first flow diversion surface side, so that the dissolved oxygen effect of the second flow diversion surface side is obviously better than that of the first flow diversion surface side, and the dissolved oxygen effect of the interface side on the plane inclined to the horizontal plane is enhanced. If the dissolved oxygen effect does not meet the required dissolved oxygen requirement, alpha is replaced 2 Larger regulators until the desired dissolved oxygen demand is met.
Eighth preferred embodiment
In step 10), if the process requires an increase in the dissolved oxygen effect of one or more of the mixing disk circumferential directions between adjacent flow channel axes, a may be installed in two adjacent flow channels in that direction 1 ＜α 2 (α 1 Unchanged), the interface of the regulators is set to be inclined, namely, the interface forms a certain angle with the horizontal plane, the inclination angle is determined according to the dissolved oxygen requirement required by the process, the inclination directions of the interfaces of the two regulators are opposite, and the second shunt surfaces of the two regulators are adjacently arranged.
In step 30), two adjacent flow channels are both sprayed with two steam-water mixed liquids which are asymmetrically distributed by taking the inclined interfaces as boundaries, and the moving path and the spraying coverage of the steam-water mixed liquid at the side of the second flow dividing surface are larger than those of the steam-water mixed liquid at the side of the first flow dividing surface. The two inner sides of the two steam-water mixed liquids (the steam-water mixed liquid at the side of the second flow splitting surface) can be interacted to collide and cut, the water drops and the air bubbles of the steam-water mixed liquids are cut into finer states, the contact area of the air bubbles and the water drops is increased, so that internal oxygen transfer is firstly carried out between the two steam-water mixed liquids, partial internal dissolved oxygen is realized, then the steam-water mixed liquid is subjected to external oxygen transfer with the peripheral water body, and the dissolved oxygen effect between the axes of adjacent flow channels is improved. The two outside soda water mixed liquids (soda water mixed liquid at the side of the first diversion surface) directly act with the surrounding water body, so that oxygen in the soda water mixed liquid is fused into the water body.
Ninth preferred embodiment
In the step 10), if the process adjustment needs to improve the dissolved oxygen amount in different directions and at different depths, namely the dissolved oxygen efficiency of the whole space of the whole aerobic tank is improved, installing alpha in all flow passages of the submersible centrifugal aerator 1 ＝α 2 Or alpha 1 ＜α 2 The interfaces of the regulators in the respective flow channels are respectively set to be vertical, horizontal or inclined, and the interfaces of the flow dividing plates of the regulators of the adjacent flow channels are different.
In step 30), firstly, two steam-water mixed liquids ejected from each flow channel interact with the surrounding water body, so that the moving path and the ejection coverage range of the steam-water mixed liquid are enlarged; and secondly, all the vapor-water mixed liquids in different directions in the circumferential direction of the mixing disk, which are perpendicular to the injection direction of the splitter plate interface in the flow channel, interact to enable all the vapor-water mixed liquids to be mutually fused, and simultaneously, the formed upper/lower flow field, left/right flow field and inclined left upward (left downward)/inclined right downward (right upward) flow field interact to enable all the vapor-water mixed liquids in the whole space to interact, and the vapor-water mixed liquids are mixed with the surrounding water body to drive the vapor-water mixed liquids and the water body in the whole space to flow, so that water drops and bubbles become finer, the content of the vapor-water mixed liquids between the flow channels is improved, the oxygen transfer in the coverage area is increased, and the dissolved oxygen in the whole space is uniform and improved. The defects that in the prior art, the interval angle of each flow channel is larger, the steam-water mixed liquid is sprayed outwards in a radial way in the circumferential direction by taking the center as the origin, and the mutual oxygen dissolving effect is not obvious are overcome.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present invention should be included in the present invention.
Claims (9)
1. The high-efficiency integrated medical wastewater treatment method is characterized by comprising the following steps of:
step 10) installing a regulator (207) in a flow channel of the submersible centrifugal aerator (20), wherein the regulator (207) comprises a hollow cylindrical body (2071) and a splitter plate (2072), and the splitter plate (2072) is axially arranged in the body (2071) along the body; the splitter plate (2072) has a first splitter surface (20721) and a second splitter surface (20722), the first splitter surface having an angle with the interface ofThe included angle between the second shunt surface and the interface surface is +.>And->，/>The method comprises the steps of carrying out a first treatment on the surface of the The interface is a plane formed by the intersection line of the axis of the body and the first and second flow dividing surfaces;
step 20) installing the submersible centrifugal aerator (20) into the aerobic tank (10);
step 30), starting a submersible electric pump (202), wherein the submersible electric pump (202) drives an impeller (206) to rotate, and steam-water mixed liquid formed in a mixing disc (204) enters a peripheral flow channel of the mixing disc (204); the steam-water mixed liquid flows to the outlet end of the flow channel, enters the regulator (207) and is divided into two fluid flows by the flow dividing plate (2072), the two fluid flows to the outlet end direction of the flow channel along the first flow dividing surface (20721) and the second flow dividing surface (20722) respectively, and is sprayed outwards along the inclined directions of the first flow dividing surface and the second flow dividing surface respectively; simultaneously, the speed of the two steam-water mixed liquids is gradually increased in the process of flowing to the outlet end of the flow channel, and the two steam-water mixed liquids can move for a certain distance after being sprayed out of the flow channel; moreover, two steam-water mixed liquids obliquely sprayed by a single flow channel collide and cut with the steam-water mixed liquid phases obliquely sprayed by two adjacent flow channels respectively, so that water drops and bubbles become finer; oxygen transfer is carried out after the steam-water mixed solution enters the water body, so that the water body is oxygenated; for a single flow passage provided with the regulator, the oxygen dissolving effect in the direction perpendicular to the dividing plane interface is improved;
In step 10), if the process needs to improve the oxygen dissolving effect of one or more directions of the circumferential direction of the submerged centrifugal aerator (20) in the aerobic tank (10) between the axes of the adjacent flow channels, the process is installed in the two adjacent flow channels in the corresponding directions of the submerged centrifugal aerator (20)Setting the interface of the regulators to be inclined, and the inclination directions of the interfaces of the two regulators are opposite;
in the step 30), two steam-water mixed liquids which are symmetrically distributed by taking the inclined interfaces as boundaries are sprayed out from two adjacent flow channels, the two steam-water mixed liquids on the inner side collide and cut under the interaction of the two steam-water mixed liquids, the water drops and the air bubbles of the steam-water mixed liquids are cut into finer states, the contact area between the air bubbles and the water drops is increased, so that internal oxygen transfer is firstly carried out between the two steam-water mixed liquids to realize part of internal dissolved oxygen, then the steam-water mixed liquids and the peripheral water body are subjected to external oxygen transfer, and the dissolved oxygen effect between the axes of the adjacent flow channels is improved; the two steam-water mixed liquids at the outer side directly act with the surrounding water body, so that oxygen in the steam-water mixed liquid is fused into the water body.
2. The method for efficient integrated medical wastewater treatment according to claim 1, characterized in that in step 10), if the process requires to increase the oxygen dissolving effect of one or more directions of the circumferential direction of the submerged centrifugal aerator (20) in the aerobic tank (10) above and below the horizontal plane of the flow channel axis, the submerged centrifugal aerator (20) is installed in the flow channel in the corresponding direction Setting the interface of the splitter plate of the regulator to a horizontal state;
in step 30), the flow channel is sprayed out of two steam-water mixed liquids which are obliquely upward and downward and are distributed in the vertical direction by taking the interface of the flow distribution plate as a boundary, and the two steam-water mixed liquids interact with the surrounding water body, so that oxygen in the steam-water mixed liquids is fused into the water body, the oxygen dissolving effect of the bottom, the middle and the upper part of the pool in the corresponding direction is enhanced, and the oxygen dissolving coverage range and the oxygen dissolving effect in the depth direction are improved.
3. The method for treating medical wastewater according to claim 1, characterized in that in step 10), if the process needs to increase the oxygen dissolving effect of one or more directions of the circumferential direction of the submerged centrifugal aerator (20) in the aerobic tank (10) on the horizontal plane of the flow channel axis, the process is carried out by installing the submerged centrifugal aerator (20) in the flow channel in the corresponding directionThe regulator of (2) is characterized in that the dividing plane of the flow dividing plate of the regulator is arranged in a vertical shapeA state;
in step 30), the flow channel is sprayed out of two steam-water mixed liquids which are distributed in the horizontal direction and incline to the left and right by taking the interface of the flow distribution plate as a boundary, and the two steam-water mixed liquids interact with the surrounding water body, so that oxygen in the steam-water mixed liquid is fused into the water body, and the dissolved oxygen coverage and the dissolved oxygen effect on the horizontal plane where the axis of the flow channel in the corresponding direction is positioned are improved.
4. The method for efficient integrated medical wastewater treatment according to claim 1, characterized in that in step 10), if the process requires to increase the oxygen dissolving effect of one or more directions of the circumferential direction of the submerged centrifugal aerator (20) in the aerobic tank (10) on a plane inclined to the horizontal plane, the process is carried out by installing in the flow channel of the submerged centrifugal aerator (20) in the corresponding directionSetting the interface of the splitter plate of the regulator to an inclined state;
in the step 30), the flow channel sprays two steam-water mixed liquids which are distributed in the direction perpendicular to the interface by taking the inclined interface as a boundary, and the two steam-water mixed liquids interact with the surrounding water body, so that oxygen in the steam-water mixed liquids is fused into the water body, and the dissolved oxygen coverage range and the dissolved oxygen effect in the direction perpendicular to the inclined interface are improved.
5. The method for efficient integrated medical wastewater treatment according to claim 1, characterized in that in step 10), if the process requires to increase the oxygen dissolving effect of one or more directions of the submerged centrifugal aerator (20) in the aerobic tank (10) above or below the horizontal plane of the flow channel axis, the submerged centrifugal aerator (20) is installed in the flow channel in the corresponding direction The regulator of (2) is characterized in that the interface of the flow dividing plate of the regulator is set to be in a horizontal state, and the second flow dividing surface side is arranged at the side needing to increase the dissolved oxygen effect；
In the step 30), the flow channel is sprayed out of two steam-water mixed liquids which are obliquely downwards and obliquely upwards and are distributed in the vertical direction by taking the interface of the flow distribution plate as a boundary, the flow velocity and coverage area of the steam-water mixed liquid sprayed on the second flow distribution surface side are larger than those of the first flow distribution surface side, so that the oxygen dissolving effect of the second flow distribution surface side is obviously better than that of the first flow distribution surface side, and the oxygen dissolving effect above or below the horizontal plane where the axis of the flow channel is positioned is enhanced; if the dissolved oxygen effect does not meet the required dissolved oxygen requirement, the device is replacedLarger regulators until the desired dissolved oxygen demand is met.
6. The method for treating medical wastewater according to claim 1, characterized in that in step 10), if the process is required to increase the oxygen dissolving effect of one or more directions of the submerged centrifugal aerator (20) in the aerobic tank (10) on one side of the flow passage axis on the horizontal plane of the flow passage axis, the submerged centrifugal aerator (20) is installed in the flow passage in the corresponding directionSetting the interface of the flow dividing plate of the regulator to be vertical, and setting the second flow dividing surface side at the side of the dissolved oxygen effect to be improved;
In the step 30), the flow channel is sprayed out by taking the interface of the flow distribution plate as a boundary, two steam-water mixed liquids which are inclined towards two sides far away from the interface respectively are arranged on the horizontal plane where the axis of the flow channel is positioned, and the flow speed and the coverage area of the steam-water mixed liquid sprayed on the second flow distribution surface side are larger than those of the first flow distribution surface side, so that the dissolved oxygen effect of the second flow distribution surface side is obviously better than that of the first flow distribution surface side, and the dissolved oxygen effect of the flow channel on the axis side of the flow channel on the horizontal plane where the axis of the flow channel is positioned is enhanced; if the dissolved oxygen effect does not meet the required dissolved oxygen requirement, the device is replacedLarger regulators until the desired dissolved oxygen demand is met.
7. The method for efficient integrated medical wastewater treatment according to claim 1, wherein in step 10), if the process requires improvement of the oxygen dissolving effect of one or more directions of the circumferential direction of the submerged centrifugal aerator (20) in the aerobic tank (10) on the side of the flow passage axis on the plane inclined to the horizontal plane, the submerged centrifugal aerator (20) is installed in the flow passage in the corresponding directionSetting the interface of the flow dividing plate of the regulator to be inclined, and setting the second flow dividing surface side to the side of improving the dissolved oxygen effect;
In the step 30), the flow channel is sprayed out of two steam-water mixed liquids taking the inclined interface as a boundary, and the two steam-water mixed liquids are respectively inclined towards two sides far away from the interface in the direction vertical to the interface, and the flow speed and the coverage area of the steam-water mixed liquid sprayed on the second flow diversion surface side are larger than those of the first flow diversion surface side, so that the dissolved oxygen effect of the second flow diversion surface side is obviously better than that of the first flow diversion surface side, and the dissolved oxygen effect of the side, which is positioned on the axis of the flow channel, of a plane inclined to the horizontal plane is enhanced; if the dissolved oxygen effect does not meet the required dissolved oxygen requirement, the device is replacedLarger regulators until the desired dissolved oxygen demand is met.
8. The method for efficient integrated medical wastewater treatment according to claim 1, characterized in that in step 10), if the process requires to increase the oxygen dissolving effect of one or more directions of the submerged centrifugal aerator (20) in the aerobic tank (10) between the axes of the adjacent flow channels, the process is carried out in two adjacent flow channels in the corresponding directions of the submerged centrifugal aerator (20)Is regulated by (a)The interfaces of the flow dividing plates of the regulators are set to be inclined, the inclination directions of the interfaces of the two regulators are opposite, and the second flow dividing surfaces of the two regulators are adjacently arranged;
In the step 30), two adjacent flow channels are both sprayed with two steam-water mixed liquids which are asymmetrically distributed by taking the inclined interfaces as boundaries, and the flow velocity and coverage area of the steam-water mixed liquid at the side of the second flow dividing surface are larger than those of the steam-water mixed liquid at the side of the first flow dividing surface; the two steam-water mixed liquids at the side of the second flow dividing surface are interacted to collide and cut, so that the water drops and the air bubbles of the steam-water mixed liquid are cut into finer states, the contact area between the air bubbles and the water drops is increased, the two steam-water mixed liquids firstly carry out internal oxygen transfer to realize partial internal dissolved oxygen, then the steam-water mixed liquid carries out external oxygen transfer with the peripheral water body, and the dissolved oxygen effect between the axes of adjacent flow channels is improved; the two steam-water mixed liquids at the side of the first diversion surface directly act with the surrounding water body, so that oxygen in the steam-water mixed liquid is fused into the water body.
9. The method for treating medical wastewater with high efficiency according to claim 1, wherein in step 10), if the process requires to increase the dissolved oxygen effect in the whole space of the aerobic tank, the method is characterized in that the method comprises the steps of installing in all flow channels of a submerged centrifugal aerator (20)Or->Setting the interface of the regulators in each flow passage to be vertical, horizontal or inclined respectively, and the interface states of the flow dividing plates of the regulators of adjacent flow passages are different;
In step 30), firstly, two steam-water mixed liquids ejected from each flow channel interact with the surrounding water body, so that the moving path and the ejection coverage range of the steam-water mixed liquid are enlarged; secondly, all the steam-water mixed liquids in the directions perpendicular to the interfaces of the flow dividing plates in the flow channels in different directions in the circumferential direction of the mixing disk interact, so that all the steam-water mixed liquids are mutually fused, flow fields formed by all the steam-water mixed liquids interact, and all the steam-water mixed liquids in the whole space interact; finally, all the vapor-water mixed liquid is mixed with the surrounding water body to drive the vapor-water mixed liquid in the whole space to flow, thereby increasing the coverage area and the oxygen transfer rate and uniformly improving the dissolved oxygen effect of the whole space.
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