CN119430363B - Laboratory efficient dissolved air floatation sewage treatment equipment and application method thereof - Google Patents
Laboratory efficient dissolved air floatation sewage treatment equipment and application method thereof Download PDFInfo
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- CN119430363B CN119430363B CN202510024646.1A CN202510024646A CN119430363B CN 119430363 B CN119430363 B CN 119430363B CN 202510024646 A CN202510024646 A CN 202510024646A CN 119430363 B CN119430363 B CN 119430363B
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- 239000010865 sewage Substances 0.000 title claims abstract description 114
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000007599 discharging Methods 0.000 claims abstract description 80
- 239000002893 slag Substances 0.000 claims abstract description 67
- 239000007788 liquid Substances 0.000 claims abstract description 44
- 239000008394 flocculating agent Substances 0.000 claims abstract description 27
- 238000005188 flotation Methods 0.000 claims description 75
- 239000003814 drug Substances 0.000 claims description 65
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 54
- 238000003756 stirring Methods 0.000 claims description 30
- 238000002347 injection Methods 0.000 claims description 25
- 239000007924 injection Substances 0.000 claims description 25
- 238000003825 pressing Methods 0.000 claims description 25
- 238000003860 storage Methods 0.000 claims description 19
- 238000000926 separation method Methods 0.000 claims description 12
- 230000000903 blocking effect Effects 0.000 claims description 8
- 238000007664 blowing Methods 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 8
- 238000009300 dissolved air flotation Methods 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000004065 wastewater treatment Methods 0.000 claims description 3
- 230000002776 aggregation Effects 0.000 claims description 2
- 238000004220 aggregation Methods 0.000 claims description 2
- 238000007667 floating Methods 0.000 abstract description 4
- 238000001125 extrusion Methods 0.000 description 14
- 238000010586 diagram Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 238000005189 flocculation Methods 0.000 description 5
- 230000016615 flocculation Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000004880 explosion Methods 0.000 description 4
- 239000003344 environmental pollutant Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 241000282472 Canis lupus familiaris Species 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000007790 scraping Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- -1 suspended matters Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5281—Installations for water purification using chemical agents
-
- 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
Landscapes
- Chemical & Material Sciences (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)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Removal Of Floating Material (AREA)
- Physical Water Treatments (AREA)
Abstract
The invention belongs to the technical field of sewage treatment, in particular to laboratory high-efficiency dissolved air floatation sewage treatment equipment and a use method thereof, aiming at the problems that a scraper can not effectively scrape scum when the existing liquid level surface is low and a flocculating agent added later is accumulated at the top of the scum, the invention provides the scheme that the equipment comprises an air floatation tank, wherein one side of the air floatation tank is provided with a sewage inlet pipe for injecting sewage, one end of the air floatation tank is provided with a sewage discharge pipe for discharging the treated sewage, the invention discloses a device for removing scum from sewage, which comprises a gas-floating box, a slag discharging port, a collecting box, a gas outlet, a nozzle and a slag discharging plate, wherein the slag discharging port is arranged at one end of the gas-floating box and is positioned above a sewage drain pipe, and the collecting box is fixedly arranged at one end of the gas-floating box and is used for collecting scum below the slag discharging port.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to laboratory efficient dissolved air floatation sewage treatment equipment and a using method thereof.
Background
Laboratory is used for carrying out various physical and chemical experiments, harmful sewage is usually generated when the experiment is carried out, in order to reduce the harm of the harmful sewage to the environment, therefore, a sewage treatment device is usually required to be used for removing harmful substances in the sewage between the discharge and the discharge, and the discharge can be carried out after reaching the discharge standard, wherein dissolved air floatation is a widely applied technology in laboratory sewage treatment, and can utilize the characteristic that water has different solubilities under different pressures to generate micro bubbles in the water under the condition of pressurization or negative pressure, and the micro bubbles can adsorb pollutants such as suspended matters, grease, organic matters and the like in the sewage and bring the pollutants to the water surface to form scum under the buoyancy effect, thereby realizing the separation and removal of the pollutants.
1. In the prior art, in the process of scraping the scum, the scum is scraped by a scraper blade on a scum scraper, the liquid level surface in the air floatation tank starts to be reduced along with the scraping of the scum, and when the liquid level surface in the air floatation tank is lower than a discharge port for discharging the scum, the scum cannot be discharged by the scraper blade, so that the scum cannot be effectively scraped;
2. When sewage is treated by dissolved air floatation, a sufficient amount of flocculating agent needs to be added into the sewage, but as the flocculating agent and the dissolved air are injected, scum floats on the sewage liquid level, and the flocculating agent added in the later stage is accumulated on the top of the scum, so that the scum cannot be fully mixed with the sewage, and the sewage treatment efficiency of a laboratory is affected.
Aiming at the problems, the invention provides laboratory efficient dissolved air floatation sewage treatment equipment and a using method thereof.
Disclosure of Invention
The invention aims to solve the defects that a scraper can not effectively scrape scum when the existing liquid level surface is low and a flocculating agent added in the later stage is accumulated at the top of the scum, and provides laboratory efficient dissolved air floatation sewage treatment equipment and a using method thereof.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the laboratory high-efficiency dissolved air floatation sewage treatment equipment comprises an air floatation tank, wherein a sewage inlet pipe is arranged at one side of the air floatation tank and used for injecting sewage, a sewage drain pipe is arranged at one end of the air floatation tank and used for discharging treated sewage, a slag discharge port used for discharging scum is arranged at one end of the air floatation tank, the slag discharge port is positioned above the sewage drain pipe, and a collecting box positioned below the slag discharge port is fixed at one end of the air floatation tank and used for collecting scum;
The device also comprises a stirring rod which rotates in the air flotation tank, wherein an air outlet cylinder is arranged in the air flotation tank, one side of the air outlet cylinder is provided with a plurality of nozzles, and the nozzles are used for obliquely downwards discharging air and blowing and gathering scum on the liquid surface towards the direction of a slag discharging port;
The medicament box is fixedly arranged at the top of the air flotation box, and a moving table is arranged at the top of the air flotation box in a sliding manner and is used for driving the air outlet cylinder to move and discharge flocculant;
the slag discharging structure is arranged at the bottom of the movable table and is used for driving the air outlet cylinder to move and removing liquid level scum;
the medicine injection structure is arranged in the air flotation tank and is used for injecting flocculant after scum is removed;
and the separation structure is arranged in the collection box and is used for separating water in the collected scum.
In one possible design, the slag discharging structure comprises two connecting arms fixed at the bottom of the movable table, the bottom ends of the two connecting arms are all extended into the air flotation tank and are all fixedly provided with mounting rings, the air outlet cylinders are rotatably sleeved in the two mounting rings, one ends of the air flotation tank, which are far away from the slag discharging holes, are fixedly provided with air pumps, the air outlet ends of the air pumps are communicated with the air outlet cylinders through hoses and are used for discharging air to the liquid level to gather slag to one side, slag discharging plates matched with the slag discharging holes are slidably connected in the air flotation tank and are used for discharging gathered slag through the slag discharging holes, the top inner wall of the air flotation tank is rotatably connected with two first connecting rods, the first connecting rods are matched with the air outlet cylinders and are used for pushing the first connecting rods to rotate, the bottom ends of the two first connecting rods are all rotatably connected with second connecting rods, the bottom ends of the second connecting rods are rotatably connected with the top of the slag discharging plates, the movable table drives the air outlet cylinders to move, the air pumps are used for injecting air into the air outlet cylinders and are obliquely downwards through nozzles and can push the slag discharging plates to one side, the slag discharging plates can be pushed upwards through the nozzles to the slag discharging holes, and then the slag discharging plates can be blown upwards through the first connecting rods and the first connecting rods are rotatably connected to the first connecting rods.
In one possible design, the medicine injection structure comprises a sliding rod which penetrates through the top of the air flotation tank in a sliding manner, wherein an extrusion plate positioned in the air flotation tank is fixed at the bottom end of the sliding rod, a second spring fixedly connected with the top of the extrusion plate is sleeved on the outer wall of the sliding rod, the top end of the second spring is fixedly connected with the top inner wall of the air flotation tank, a liquid guide hose is fixed at the bottom of the medicine tank, a medicine storage cavity is arranged in the moving table, the bottom end of the liquid guide hose is communicated with the medicine storage cavity and is used for injecting a flocculating agent into the medicine storage cavity, two medicine injection pipes are fixed at the bottom of the moving table and are communicated with the medicine storage cavity, the bottom ends of the two medicine injection pipes extend into the air flotation tank and are used for injecting the flocculating agent into the air flotation tank, a blocking block used for blocking a liquid inlet of the liquid guide hose is slidably connected to the bottom inner wall of the medicine tank, one side of the blocking block is fixedly provided with a sliding plate, one end of the sliding plate is hermetically extended to one side of the tank, the sliding plate is internally provided with a medicine storage cavity, the sliding plate is internally provided with two medicine injection pipes positioned in the inclined pin and is matched with the inclined pin in the inclined rod, and the inclined pin is matched with the sliding rod to the inclined rod; the stripper plate drives the slide bar to move upwards in step, and the cooperation of round pin pole and inclined hole drives slide bar and shutoff piece and moves to the outside, removes the shutoff to the drain hose, and the flocculating agent of medicament incasement flows into the medicine storage intracavity in the mobile station through the drain hose to discharge through the medicine injection pipe, along with the removal of mobile station can increase the contact range of flocculating agent and sewage, make flocculating agent fully with sewage reaction, improve flocculation efficiency, improve later stage sewage treatment efficiency.
In one possible design, the separation structure comprises a concave filter screen fixed in the collection box and used for filtering scum, a traction rod is penetrated through the concave filter screen in a sliding way, a pressing plate is fixed at the top end of the traction rod and used for extruding scum on the concave filter screen, the bottom end of the traction rod is sealed and penetrated through the collection box and fixed with a movable frame in a sliding way, one end of the stirring rod is sealed and rotationally extended to one end of the air flotation box and fixed with a rotary table, one side of the rotary table, deviating from the center of the circle, is fixed with a pin column, the pin column extends into the movable frame and is in sliding fit with the movable frame, the rotary table drives the pressing plate to reciprocate up and down through the cooperation of the pin column and the movable frame, a return pipe is fixed at the bottom of the collection box and communicated with a drain pipe and used for discharging separated sewage, and the reciprocating screw rod drives the stirring rod to rotate through a chain wheel and a chain, so that the mixing of sewage, the flocculant and air-dissolved water can be driven to rotate, the pin column and the movable frame can drive the traction rod and the pressing plate to reciprocate up and down, the pressing plate can be driven to press the pressing plate and the bottom of the floating plate to separate scum through the drain water.
In one possible design, the top of the air flotation tank is rotationally connected with a reciprocating screw rod through a base, one end of the reciprocating screw rod penetrates through a moving table through threads, a driving motor is fixed at the top of the air flotation tank, an output shaft of the driving motor is fixedly connected with one end of the reciprocating screw rod through a coupler, a guide rod is fixed at the top of the air flotation tank through the base, one end of the guide rod slides to penetrate through the moving table, one end of the stirring rod, far away from the turntable, is hermetically rotated to extend to one side of the air flotation tank and is in transmission connection with the reciprocating screw rod through a chain wheel and a chain, the driving motor drives the reciprocating screw rod to rotate to drive the moving table to move for removing scum, and the reciprocating screw rod drives the stirring rod to rotate through the chain wheel and the chain, so that sewage can be stirred, the mixing of sewage, flocculant and air-soluble water can be accelerated, and the water separation operation of the scum on the concave filter screen can be completed.
In one possible design, the both sides that the air supporting case kept away from each other all are equipped with the rectangular hole, two equal sliding connection has trapezoidal sliding strip in the rectangular hole, two one side that trapezoidal sliding strip kept away from each other all is fixed with a plurality of first springs, the both sides of air supporting case all are fixed with a plurality of dogs, and the one end and the dog fixed connection that trapezoidal sliding strip were kept away from to first spring for stepping down trapezoidal sliding strip, the bottom both sides of venthole all are fixed with the bearing stick, and the bearing stick is used for making the nozzle keep the inclination, the bearing stick is used for squeezing into the rectangular downthehole with trapezoidal sliding strip's inclined plane cooperation, and the bearing stick cooperatees with the right angle face that trapezoidal sliding strip is close to collecting box one end and is used for driving the venthole anticlockwise rotation, one side of venthole is fixed with the push rod, and stripper for driving the stripper for the stripper upward moves, and when the venthole moves to trapezoidal sliding strip position, and the bearing stick and trapezoidal sliding strip inclined plane cooperation is used for carrying trapezoidal sliding strip, and first spring is in compressed state, when the venthole touches the venthole, and the air supporting box rotates the push the air outlet box, and the medicament is rotated to the opposite to the end that the inside the box is rotated to the opposite to the push away from the trapezoidal sliding strip.
In one possible design, the one end that the slag notch was kept away from to the air supporting case has been placed through L template and has dissolved the gas pitcher, the one end that dissolves the gas pitcher is fixed with the inlet tube, the one end of inlet tube extends to the air supporting incasement, the outer wall that dissolves the gas pitcher is equipped with two communicating pipes, and two communicating pipes cooperate with water pump, air compressor respectively for inject clear water and air into to dissolve the gas pitcher and carry out the preparation of gas-soluble water.
In one possible design, the nozzle is inclined at an angle of 20 ° -30 ° for collecting the scum above the liquid level above the slag discharge plate.
In one possible design, the bottom of the slag discharging plate is fixedly provided with a plurality of mounting plates, one side, close to the collecting box, of each mounting plate is fixedly provided with a plurality of hemispherical bumps, one side of each concave filter screen is fixedly provided with a plurality of knocking rods, one ends of the knocking rods are sealed and slide to extend into the air flotation tank, one ends of the knocking rods are spherical and matched with the hemispherical bumps and are used for vibrating the concave filter screens through the knocking rods, when the slag discharging plate moves upwards, the slag discharging plate drives the mounting plates to synchronously move, the mounting plates can continuously vibrate the concave filter screens through the matching of the hemispherical bumps and the knocking rods, scum on the concave filter screens can be vibrated down to the middle, and the later pressing plates are convenient for extruding moisture in the scum.
The application discloses a using method of laboratory high-efficiency dissolved air floatation sewage treatment equipment, which comprises the following steps:
S1, injecting sewage to be treated and flocculant into an air flotation tank, stirring to flocculate the sewage, simultaneously, injecting clear water and air into a dissolved air tank to form air-soluble water, and injecting the air flotation tank to float scum in the sewage on the liquid surface;
S2, driving a reciprocating screw rod to rotate by a driving motor so as to enable the air outlet cylinder to move, injecting air into the air outlet cylinder by the air pump, blowing scum on the liquid level to the upper part of the scum discharging plate for aggregation by obliquely blowing down the air outlet cylinder, pushing the first connecting rod by the air outlet cylinder when the air outlet cylinder moves to a specific position so as to pull the scum discharging plate upwards, fishing up the scum and discharging the scum into the collecting box through the scum discharging port, and completing scum removal;
S3, when the slag discharging plate moves upwards, the mounting plate is driven to move synchronously, so that the concave filter screen vibrates, and scum on the filter screen is vibrated and falls down, so that the subsequent treatment is facilitated;
S4, when the reciprocating screw rod rotates, the stirring rod is driven to rotate through the chain wheel and the chain, so that the mixing of sewage, flocculant and gas-soluble water is accelerated, the pressing plate is driven to reciprocate up and down, scum in the middle of the concave filter screen is extruded, the separation of the scum and water is completed, and the separated water is discharged through the return pipe;
s5, after deslagging is finished, discharging the flocculant into an air flotation tank to enable the flocculant to fully react with sewage, driving an air outlet cylinder to reset by a reciprocating screw rod, removing the blocking of a liquid guide hose through a series of connecting rod mechanisms, enabling the flocculant in the medicament tank to flow into a medicament storage cavity in a mobile station, discharging the flocculant through a medicament injection pipe, increasing the contact range of the flocculant and the sewage, and improving flocculation efficiency and sewage treatment efficiency.
The slag removing device has the beneficial effects that the air outlet cylinder is arranged in the air flotation tank, the slag removing plate is connected in the air flotation tank in a sliding way, the inner wall of the top of the air flotation tank is rotationally connected with two first connecting rods, the bottom ends of the two first connecting rods are rotationally connected with second connecting rods, the bottom ends of the second connecting rods are rotationally connected with the top of the slag removing plate;
When the air outlet cylinder is reset, the bearing rod is contacted with one end of the trapezoid sliding bar to drive the air outlet cylinder to rotate anticlockwise, the air outlet cylinder drives the pushing rod to rotate, the pushing rod is contacted with the extrusion plate and pushes the extrusion plate upwards along with the movement of the air outlet cylinder, so that flocculant in a medicament box can be discharged into an air flotation box, and the flocculant is automatically discharged after the scum is removed, so that the flocculant is prevented from accumulating on the scum and fully reacts with sewage;
The invention discloses a medicine injection structure, which comprises a sliding rod, wherein the sliding rod penetrates through the top of an air flotation tank in a sliding way, an extrusion plate is fixed at the bottom end of the sliding rod, the bottom of a medicine tank is communicated with a medicine storage cavity in a mobile station through a liquid guide hose, two medicine injection pipes are fixed at the bottom of the mobile station, a plugging block is connected to the inner wall of the bottom of the medicine tank in a sliding way, one side of the plugging block is fixedly provided with the sliding plate, an inclined hole is arranged in the sliding plate, a pin rod is in sliding fit with the inclined hole, and the pin rod is fixed in the sliding rod;
According to the invention, a concave filter screen is fixed in the collection box, a traction rod penetrates through the concave filter screen in a sliding manner, a pressing plate is fixed at the top end of the traction rod, a movable frame is fixed at the bottom end of the traction rod, a pin is fixed at one side of the rotary table deviating from the circle center, a reciprocating screw rod drives the stirring rod to rotate through a chain wheel and a chain, the reciprocating screw rod is used for stirring sewage, accelerating mixing of sewage, flocculant and air-soluble water, and driving the rotary table and the pin to rotate, the cooperation of the pin and the movable frame can drive the traction rod and the pressing plate to reciprocate up and down, the pressing plate can squeeze scum in the middle of the concave filter screen, separation of scum and water is completed, and separated water flows into a sewage draining pipe through a return pipe to be discharged.
According to the invention, the scum can be automatically gathered to one side through the cooperation of the air outlet cylinder, the nozzle and the scum discharging plate to be salvaged and discharged, the scum can be effectively removed, the flocculating agent can be automatically injected after the scum is removed, the flocculating agent is prevented from being accumulated on the scum, the efficiency of the later sewage treatment is ensured, in addition, the stirring rod can discharge the water in the scum when stirring the sewage to accelerate the mixing of the sewage, the flocculating agent and the air-soluble water, and the sewage treatment efficiency is improved.
Drawings
Fig. 1 is a schematic view of a three-dimensional structure of a first view of a laboratory high-efficiency dissolved air floatation sewage treatment device according to embodiment 1 of the present invention;
Fig. 2 is a schematic view of a second perspective three-dimensional structure of a laboratory high-efficiency dissolved air floatation sewage treatment device according to embodiment 1 of the present invention;
FIG. 3 is a schematic diagram of a three-dimensional cross-sectional structure of a laboratory high-efficiency dissolved air floatation wastewater treatment apparatus according to embodiment 1 of the present invention;
fig. 4 is a schematic diagram of a schematic cross-sectional front view of a laboratory high-efficiency dissolved air floatation sewage treatment device according to embodiment 1 of the present invention;
fig. 5 is a schematic diagram of a three-dimensional explosion structure of a mobile station, a guide rod and a reciprocating screw of a laboratory high-efficiency dissolved air floatation sewage treatment device according to embodiment 1 of the present invention;
Fig. 6 is a schematic three-dimensional structure diagram of the cooperation of the air outlet tube of the laboratory high-efficiency dissolved air floatation sewage treatment device, the first connecting rod and the second connecting rod provided in embodiment 1 of the present invention;
Fig. 7 is a schematic diagram of a three-dimensional sectional explosion structure of a collection box and a sliding plate of a laboratory high-efficiency dissolved air floatation sewage treatment device according to embodiment 1 of the present invention;
fig. 8 is a schematic diagram of a three-dimensional explosion structure of a load-bearing rod, a push rod, a trapezoidal sliding bar and a squeeze plate of a laboratory high-efficiency dissolved air floatation sewage treatment device according to embodiment 1 of the present invention;
fig. 9 is a three-dimensional sectional exploded schematic view of a medicine tank, a sliding plate and a second spring of a laboratory high-efficiency dissolved air floatation sewage treatment device and an enlarged schematic view of a sliding rod, a sliding plate, an inclined hole and a pin rod according to embodiment 1 of the present invention;
fig. 10 is a schematic three-dimensional structure diagram of a dissolved air tank and a water inlet pipe of a laboratory high-efficiency dissolved air floatation sewage treatment device provided in embodiment 1 of the present invention;
FIG. 11 is a schematic diagram of a schematic cross-sectional front view of a laboratory high-efficiency dissolved air floatation wastewater treatment apparatus according to embodiment 2 of the present invention;
Fig. 12 is a schematic diagram of a three-dimensional sectional explosion structure of a collection box, a knocking rod and a mounting plate of a laboratory high-efficiency dissolved air floatation sewage treatment device according to embodiment 2 of the present invention.
The device comprises a 1, an air flotation tank, a 2, a moving table, a 3, a guide rod, a 4, a reciprocating screw rod, a 5, a driving motor, a 6, a stirring rod, a 7, a connecting arm, a 8, a mounting ring, a 9, an air outlet, a 10, a nozzle, a 11, a collecting box, a 12, a concave filter screen, a 13, a slag outlet, a 14, an air pump, a 15, a slag discharging plate, a 16, a first connecting rod, a 17, a second connecting rod, a 18, a mounting plate, a 19, a hemispherical convex block, a 20, a knocking rod, a 21, a rectangular hole, a 22, a trapezoid sliding bar, a 23, a stop block, a 24, a first spring, a 25, a bearing rod, a 26, a pushing rod, a 27, a pressing plate, a 28, a sliding rod, a 29, a second spring, a 30, a medicine tank, a 31, a liquid guide hose, a 32, a medicine injection pipe, a 33, a blocking block, a 34, a sliding plate, a 35, an inclined hole, a 36, a pin rod, a 37, a turntable, a 38, a pin column, a 39, a pressing plate, a 40, a traction rod, a moving frame, a 42, a return pipe, a 43, a sewage inlet pipe, a 44, a blow-molding pipe, a water inlet pipe, a 46, a water inlet pipe and a water inlet pipe.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Example 1
Referring to fig. 1 to 4, the sewage treatment apparatus is used in the field of air floatation, and mainly comprises an air floatation tank 1, wherein a sewage inlet pipe 43 is arranged at one side of the air floatation tank 1 for injecting sewage. One end of the air flotation tank 1 is provided with a drain pipe 44 for discharging treated sewage. The other end of the air flotation tank 1 is provided with a slag discharge port 13 for discharging scum, and the slag discharge port 13 is positioned above the sewage drain pipe 44. A collecting box 11 is fixed at one end of the air flotation tank 1 below the slag discharging opening 13 and is used for collecting scum.
Referring to fig. 1 to 4, a rotatable stirring rod 6 for stirring sewage is provided in the air bearing box 1. Meanwhile, an air outlet cylinder 9 is arranged in the air flotation tank 1, one side of the air outlet cylinder 9 is provided with a plurality of nozzles 10, and the nozzles 10 are used for obliquely downwards discharging air and blowing and gathering scum on the liquid surface towards a slag discharging port 13. The medicine tank 30 is fixedly arranged at the top of the air flotation tank 1 and is used for storing flocculant. The top of the air flotation tank 1 is also provided with a moving table 2 in a sliding manner, and the moving table 2 is used for driving an air outlet cylinder 9 to move and discharge flocculant.
Referring to fig. 2 to 6, a slag discharging structure is provided at the bottom of the moving table 2 for driving the air outlet 9 to move, thereby removing the liquid surface scum. Specifically, the sediment structure includes two linking arms 7 of fixing in the mobile station 2 bottom, and the bottom of two linking arms 7 all extends to in the air supporting case 1 and all is fixed with collar 8. The air outlet cylinder 9 is rotatably sleeved in the two mounting rings 8 and can move along with the movement of the mobile station 2. An air pump 14 is fixed at one end of the air flotation tank 1 far away from the slag discharge port 13, and an air outlet end of the air pump 14 is communicated with the air outlet cylinder 9 through a hose and is used for discharging air to the liquid level to gather the scum to one side. The air flotation tank 1 is also connected with a slag discharging plate 15 matched with the slag discharging opening 13 in a sliding way, and is used for discharging the gathered scum through the slag discharging opening 13. The top inner wall of the air flotation tank 1 is rotatably connected with two first connecting rods 16, and the first connecting rods 16 are matched with the air outlet cylinder 9. The air outlet cylinder 9 can push the first connecting rod 16 to rotate in the moving process. The bottom ends of the two first connecting rods 16 are respectively and rotatably connected with a second connecting rod 17, and the bottom ends of the second connecting rods 17 are rotatably connected with the top of the slag discharging plate 15.
Specifically, when the moving table 2 drives the air outlet cylinder 9 to move, the air pump 14 injects air into the air outlet cylinder 9, and the air blows obliquely downwards through the nozzle 10 to blow and gather the scum on the liquid surface to the upper part of the slag discharging plate 15. The air outlet cylinder 9 contacts with the first connecting rod 16 in the moving process and pushes the first connecting rod 16 to rotate anticlockwise, and the first connecting rod 16 pulls the slag discharging plate 15 upwards through the second connecting rod 17. The slag discharging plate 15 picks up the dross collected above and discharges the dross into the collecting box 11 through the slag discharging opening 13, thereby completing the dross removing operation.
Referring to fig. 3, 4, 8 and 9, a chemical injection structure is provided in the air bearing box 1 for injecting a flocculant after scum removal. Specifically, the medicine injection structure comprises a sliding rod 28 which penetrates through the top of the air flotation tank 1 in a sliding mode, and an extrusion plate 27 positioned in the air flotation tank 1 is fixed to the bottom end of the sliding rod 28. And the extrusion plate 27 is positioned above the air outlet cylinder 9, a second spring 29 fixedly connected with the top of the extrusion plate 27 is sleeved on the outer wall of the sliding rod 28, and the top end of the second spring 29 is fixedly connected with the top inner wall of the air flotation tank 1. The bottom of the medicine box 30 is fixed with a liquid guiding hose 31, a medicine storage cavity is arranged in the mobile station 2, and the bottom end of the liquid guiding hose 31 is communicated with the medicine storage cavity and is used for injecting flocculant into the medicine storage cavity. Two medicine injection pipes 32 are fixed at the bottom of the mobile station 2, and the medicine injection pipes 32 are communicated with the medicine storage cavity. The bottom ends of the two medicine injection pipes 32 extend into the air flotation tank 1 and are used for injecting flocculant into the air flotation tank 1. The bottom inner wall sliding connection of medicament case 30 has the shutoff piece 33 that is used for shutoff drain hose 31 inlet, and one side of shutoff piece 33 is fixed with sliding plate 34. One end of the sliding plate 34 is sealed and slidingly extended to one side of the medicine box 30, and an inclined hole 35 positioned outside the medicine box 30 is provided in the sliding plate 34. The inclined hole 35 is slidably fitted with a pin 36, and the pin 36 is fixed in the slide lever 28.
Specifically, when the extrusion plate 27 drives the sliding rod 28 to move upwards synchronously, the pin rod 36 and the inclined hole 35 cooperate to drive the sliding plate 34 and the plugging block 33 to move outwards, so as to release the plugging of the liquid guide hose 31. At this time, the flocculant in the medicine tank 30 flows into the medicine storage chamber in the mobile station 2 through the liquid guide hose 31, and is discharged through the medicine injection tube 32. Along with the movement of the mobile station 2, the contact range of the flocculant and sewage can be increased, so that the flocculant can fully react with the sewage, the flocculation efficiency is improved, and the sewage treatment efficiency in the later stage is improved.
Referring to fig. 1 and 5, the top of the air flotation tank 1 is rotatably connected with a reciprocating screw rod 4 through a base, one end of the reciprocating screw rod 4 penetrates through the mobile station 2 through threads, a driving motor 5 is further fixed at the top of the air flotation tank 1, and an output shaft of the driving motor 5 is fixedly connected with one end of the reciprocating screw rod 4 through a coupler. The top of the air flotation tank 1 is also fixed with a guide rod 3 through a base, and one end of the guide rod 3 penetrates through the mobile station 2 in a sliding manner, so that the stability of the mobile station 2 in the moving process is ensured.
Referring to fig. 2-4, a stirring rod 6 is arranged in the air flotation tank 1, one end of the stirring rod 6 is sealed, rotated and extended to one side of the air flotation tank 1, and is in transmission connection with the reciprocating screw rod 4 through a chain wheel and a chain. Like this, when driving motor 5 drive reciprocating screw 4 rotates, not only can drive mobile station 2 and remove at the top of air supporting case 1, can also drive puddler 6 through sprocket, chain and rotate in air supporting case 1 for stirring sewage, the mixture of acceleration sewage, flocculating agent and gas-soluble water.
Referring to fig. 3, 4 and 7, a collecting box 11 is further provided at one side of the air flotation tank 1, and a concave filter screen 12 is fixed in the collecting box 11 for filtering scum. A traction rod 40 is penetrated through the concave filter screen 12 in a sliding way, and a pressing plate 39 is fixed at the top end of the traction rod 40 and used for pressing scum on the concave filter screen 12. The bottom end of the traction rod 40 is hermetically slid through the collection box 11 and is fixed with a moving frame 41. The other end of the stirring rod 6 extends to the other end of the air flotation tank 1 in a sealing and rotating way, a rotary table 37 is fixed, a pin 38 is fixed on one side of the rotary table 37 deviating from the circle center, and the pin 38 extends into the movable frame 41 and is in sliding fit with the movable frame 41.
Specifically, when the turntable 37 rotates, the pin 38 and the moving frame 41 cooperate with each other, so that the pressing plate 39 can be driven to reciprocate up and down in the concave strainer 12, thereby pressing the dross and separating the dross from the water. The separated moisture flows into a drain pipe 44 through a return pipe 42 at the bottom of the collecting box 11 to be discharged.
Referring to fig. 2, 4, 8 and 9, in addition, rectangular holes 21 are formed on both sides of the air bearing box 1, which are far away from each other, and a trapezoidal sliding bar 22 is slidably connected in the rectangular holes 21. A plurality of first springs 24 are fixed on one sides of the trapezoid sliding strips 22, which are far away from each other, a plurality of stop blocks 23 are fixed on two sides of the air flotation tank 1, and one ends of the first springs 24, which are far away from the trapezoid sliding strips 22, are fixedly connected with the stop blocks 23 and are used for giving way to the trapezoid sliding strips 22. The top of the air flotation tank 1 is also provided with an air outlet barrel 9, both sides of the bottom of the air outlet barrel 9 are fixed with bearing rods 25, and the bearing rods 25 are used for enabling the nozzle 10 to be in an inclined state. The bearing bar 25 is matched with the inclined plane of the trapezoid sliding bar 22, and can squeeze the trapezoid sliding bar 22 into the rectangular hole 21 when the moving table 2 drives the air outlet cylinder 9 to move.
Specifically, when the air outlet tube 9 resets, the bearing bar 25 is matched with the right-angle surface of the trapezoidal sliding bar 22, which is close to one end of the collecting box 11, and is used for driving the air outlet tube 9 to rotate anticlockwise. A pushing rod 26 is also fixed on one side of the air outlet tube 9, and the pushing rod 26 pushes the extrusion plate 27 to move upwards under the rotating action of the air outlet tube 9. In this way, in the process that the mobile station 2 drives the air outlet cylinder 9 to move, the extruding plate 27 can be driven to move upwards, and then the flocculant in the medicament box 30 is discharged into the air flotation box 1.
Referring to fig. 2,3,4 and 10, the end of the air box 1 remote from the slag hole 13 is firmly placed with a dissolved air tank 45 by an L-shaped plate. One end of the dissolved air tank 45 is fixedly connected with a water inlet pipe 46, and one end of the water inlet pipe 46 extends to the inside of the air flotation tank 1 so as to introduce prepared dissolved air into the air flotation tank 1. On the outer wall of the dissolved air tank 45, two communicating pipes are provided, which are respectively connected with a water pump and an air compressor and are matched for use, and are used for injecting clear water and air into the dissolved air tank 45 to perform the preparation process of the dissolved air.
Referring to fig. 4 and 5, the nozzle 10 is installed in the air bearing box 1, and its inclined angle is carefully set between 20 ° and 30 °. The design enables the nozzle 10 to effectively collect the scum on the liquid surface above the slag discharging plate 15, thereby facilitating the subsequent slag discharging operation.
In summary, the efficient dissolved air floatation sewage treatment equipment drives the reciprocating screw rod 4 to rotate through the driving motor 5, so that the movable platform 2 is driven to carry out scum removal operation, and the stirring rod 6 is driven to rotate through the chain wheel and the chain, so that the mixing of sewage, flocculant and dissolved air is accelerated. Meanwhile, the rotation of the stirring rod 6 drives the pressing plate 39 to reciprocate up and down in the concave filter screen 12 through the cooperation of the turntable 37 and the pin 38, so that the separation of scum and water is completed. In addition, the movable platform 2 drives the extruding plate 27 to move upwards through the cooperation of the air outlet cylinder 9 and the pushing rod 26 in the moving process, so that the automatic feeding of the flocculating agent is realized.
In conclusion, the efficient dissolved air flotation sewage treatment equipment realizes effective removal of scum, uniform injection of flocculating agent and effective separation of moisture in the scum through ingenious design of a slag discharging structure, a medicine injection structure and a separation structure, and improves sewage treatment efficiency and treatment effect.
Example 2
Referring to fig. 11 and 12, the improvement is that a plurality of mounting plates 18 are fixed to the bottom of the slag discharging plate 15, and a plurality of hemispherical protrusions 19 are fixed to the side of the mounting plates 18 near the collecting box 11. Meanwhile, a plurality of knocking rods 20 are fixed on one side of the concave filter screen 12, and one ends of the knocking rods 20 are sealed and slidably extend into the air flotation tank 1. The end of the striking rod 20 is designed in a sphere shape, which cooperates with the hemispherical projection 19.
Specifically, the structure is such that the mounting plate 18 is driven to move synchronously when the slag discharging plate 15 moves upward. The hemispherical protrusions 19 on the mounting plate 18, when in contact with the spherical ends of the striking rods 20, produce a striking effect that vibrates the concave screen 12. This vibration can shake the scum on the concave filter screen 12 to the middle, and facilitates the extrusion of water in the scum by the later pressing plate 39, thereby improving the treatment efficiency and effect of the whole sewage treatment apparatus.
The application method of the laboratory high-efficiency dissolved air floatation sewage treatment equipment comprises the following steps:
S1, injecting sewage to be treated into the air flotation tank 1 through a sewage liquid inlet pipe 43, injecting a sufficient amount of flocculating agent into the medicament tank 30 when the sewage is higher than a slag discharging plate 15 and lower than an air outlet cylinder 9, then injecting the flocculating agent into the air flotation tank 1, stirring the sewage in the air flotation tank 1 through a stirring rod 6, and respectively injecting clear water and air into a dissolved air tank 45 through a water pump and an air compressor, wherein the clear water and the air form gas-soluble water in the dissolved air tank 45, and injecting gas-soluble water into the air flotation tank 1 by opening a valve on a water inlet pipe 46, wherein the flocculation in the sewage floats on the liquid surface under the action of the gas-soluble water;
S2, driving a motor 5 to drive a reciprocating screw rod 4 to rotate, driving the reciprocating screw rod 4 to drive an air outlet cylinder 9 to move through a moving table 2, injecting air into the air outlet cylinder 9 by an air pump 14, blowing and collecting scum on the liquid surface upwards of a slag discharging plate 15 by the air through a nozzle 10 in an inclined downward direction, enabling the nozzle 10 to be always in an inclined arrangement under the action of gravity of a bearing rod 25, when the air outlet cylinder 9 moves to a position of a trapezoid sliding bar 22, pushing the trapezoid sliding bar 22 outwards by the inclined plane of the bearing rod 25 and the trapezoid sliding bar 22, enabling a first spring 24 to be in a compressed state, continuing to move the air outlet cylinder 9 until the air outlet cylinder 9 contacts with a first connecting rod 16 and pushes the first connecting rod 16 to rotate anticlockwise, enabling the bearing rod 25 to be separated from the trapezoid sliding bar 22, resetting under the action of a first spring 24, enabling the first connecting rod 16 to pull the slag discharging plate 15 upwards through a second connecting rod 17, enabling scum collected above to be fished up, discharging scum into a collecting box 11 through a slag discharging hole 13, and completing a removing operation;
S3, when the slag discharging plate 15 moves upwards, the slag discharging plate 15 drives the mounting plate 18 to move synchronously, the mounting plate 18 can continuously vibrate the concave filter screen 12 through the cooperation of the hemispherical convex block 19 and the knocking rod 20, scum on the concave filter screen 12 can be vibrated to the middle, and the later pressing plate 39 can conveniently extrude water in the scum;
S4, when the reciprocating screw 4 rotates, the reciprocating screw 4 drives the stirring rod 6 to rotate through a chain wheel and a chain, so that the stirring rod is used for stirring sewage, accelerating the mixing of the sewage, the flocculating agent and the air-soluble water, and can also drive the turntable 37 and the pin 38 to rotate, the pin 38 and the moving frame 41 are matched to drive the traction rod 40 and the pressing plate 39 to reciprocate up and down, the pressing plate 39 can squeeze scum in the middle of the concave filter screen 12, the scum and the water are separated, and the separated water flows into the drain pipe 44 through the return pipe 42 to be discharged;
And S5, when the slag discharging plate 15 moves upwards to finish the discharge of scum, the liquid level is clean, at the moment, a flocculating agent is discharged into the air flotation tank 1, so that the flocculating agent can fully react with sewage, specifically, the reciprocating screw rod 4 drives the air outlet barrel 9 to move leftwards to reset, the bearing rod 25 is contacted with one end of the trapezoid sliding strip 22, the air outlet barrel 9 is driven to rotate anticlockwise, the air outlet barrel 9 drives the push rod 26 to rotate, along with the movement of the air outlet barrel 9, the push rod 26 is contacted with the extrusion plate 27 and pushes the extrusion plate 27 upwards, the extrusion plate 27 drives the sliding rod 28 to synchronously move, the pin rod 36 and the inclined hole 35 are matched to drive the sliding plate 34 and the blocking block 33 to move outwards, the blocking of the liquid guide hose 31 is removed, the flocculating agent in the chemical tank 30 flows into a chemical storage cavity in the mobile station 2 through the liquid guide hose 31, and is discharged into the air flotation tank 1 through the chemical injection pipe 32, the contact range of the flocculating agent and the flocculating agent can be increased along with the movement of the mobile station 2, the flocculating agent fully reacts with sewage, and the flocculation efficiency is improved, and the sewage treatment efficiency at the later stage is improved.
However, as well known to those skilled in the art, the working principles and wiring methods of the driving motor 5 and the air pump 14 are common, which are all conventional means or common general knowledge, and are not described herein in detail, and any choice can be made by those skilled in the art according to their needs or convenience.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (10)
1. The laboratory high-efficiency dissolved air floatation sewage treatment equipment is characterized by comprising an air floatation box, wherein a sewage inlet pipe is arranged at one side of the air floatation box and used for injecting sewage, a sewage discharge pipe is arranged at one end of the air floatation box and used for discharging treated sewage, a slag discharge port used for discharging scum is arranged at one end of the air floatation box and is positioned above the sewage discharge pipe, and a collecting box positioned below the slag discharge port is fixed at one end of the air floatation box and used for collecting scum;
The device also comprises a stirring rod which rotates in the air flotation tank, wherein an air outlet cylinder is arranged in the air flotation tank, one side of the air outlet cylinder is provided with a plurality of nozzles, and the nozzles are used for obliquely downwards discharging air and blowing and gathering scum on the liquid surface towards the direction of a slag discharging port;
The medicament box is fixedly arranged at the top of the air flotation box, and a moving table is arranged at the top of the air flotation box in a sliding manner and is used for driving the air outlet cylinder to move and discharge flocculant;
the slag discharging structure is arranged at the bottom of the movable table and is used for driving the air outlet cylinder to move and removing liquid level scum;
the medicine injection structure is arranged in the air flotation tank and is used for injecting flocculant after scum is removed;
The medicine injection structure comprises a sliding rod which penetrates through the top of the air flotation tank in a sliding mode, an extruding plate positioned in the air flotation tank is fixed at the bottom end of the sliding rod, a second spring fixedly connected with the top of the extruding plate is sleeved on the outer wall of the sliding rod, a liquid guide hose is fixed at the bottom of the medicine tank, a medicine storage cavity is arranged in the mobile station, two medicine injection pipes are fixed at the bottom of the mobile station, a plugging block for plugging a liquid inlet of the liquid guide hose is slidably connected to the inner wall of the bottom of the medicine tank, a sliding plate is fixed at one side of the plugging block, an inclined hole positioned on the outer side of the medicine tank is formed in the sliding plate, a pin rod is slidably matched in the inclined hole, and the pin rod is fixed in the sliding rod;
and the separation structure is arranged in the collection box and is used for separating water in the collected scum.
2. The laboratory high-efficiency dissolved air floatation sewage treatment device according to claim 1, wherein the deslagging structure comprises two connecting arms fixed at the bottom of the mobile station, the bottom ends of the two connecting arms are all extended into an air floatation tank and are all fixed with mounting rings, the air outlet is rotationally sleeved in the two mounting rings, one end of the air floatation tank, which is far away from a deslagging port, is fixedly provided with an air pump, the air outlet end of the air pump is communicated with the air outlet through a hose and is used for discharging air to the liquid level to gather scum to one side, a deslagging plate matched with the deslagging port is slidably connected in the air floatation tank and is used for discharging the gathered scum through the deslagging port, the inner wall of the top of the air floatation tank is rotationally connected with two first connecting rods, the first connecting rods are matched with the air outlet, the air outlet is used for pushing the first connecting rods to rotate, the bottom ends of the two first connecting rods are rotationally connected with second connecting rods, and the bottom ends of the second connecting rods are rotationally connected with the top of the deslagging plate.
3. The laboratory high-efficiency dissolved air floatation sewage treatment device according to claim 2, wherein the top end of the second spring is fixedly connected with the inner wall of the top of the air floatation tank, the bottom end of the liquid guide hose is communicated with the medicine storage cavity and is used for injecting flocculating agent into the medicine storage cavity, the medicine injection pipes are communicated with the medicine storage cavity, the bottom ends of the two medicine injection pipes are both extended into the air floatation tank and are used for injecting flocculating agent into the air floatation tank, one end of the sliding plate is hermetically and slidingly extended to one side of the medicine tank, and the pin rod and the inclined hole are matched to drive the sliding plate to move outwards.
4. The laboratory high-efficiency dissolved air flotation sewage treatment device according to claim 3, wherein the separation structure comprises a concave filter screen fixed in a collection box and used for filtering scum, a traction rod is slidably penetrated in the concave filter screen, a pressing plate is fixed at the top end of the traction rod and used for pressing scum on the concave filter screen, a movable frame is fixed at the bottom end of the traction rod and slidably penetrates through the collection box in a sealing manner, one end of the stirring rod is rotatably extended to one end of the air flotation box in a sealing manner and is fixed with a rotary table, a pin is fixed at one side of the rotary table deviating from the center of a circle and is extended into the movable frame and is slidably matched with the movable frame, the rotary table drives the pressing plate to reciprocate up and down through the cooperation of the pin and the movable frame, a return pipe is fixed at the bottom of the collection box and is communicated with a sewage discharge pipe, and separated sewage is discharged.
5. The laboratory high-efficiency dissolved air floatation sewage treatment device according to claim 4, wherein the top of the air floatation tank is rotationally connected with a reciprocating screw rod through a base, one end of the reciprocating screw rod penetrates through the mobile station through threads, the top of the air floatation tank is fixedly provided with a driving motor, an output shaft of the driving motor is fixedly connected with one end of the reciprocating screw rod through a coupler, the top of the air floatation tank is fixedly provided with a guide rod through the base, one end of the guide rod penetrates through the mobile station in a sliding mode, and one end of the stirring rod, far away from the rotary disc, is hermetically rotated to extend to one side of the air floatation tank and is connected with the reciprocating screw rod through a sprocket and a chain.
6. The efficient dissolved air floatation sewage treatment device in a laboratory of claim 5, wherein rectangular holes are formed in two sides, away from each other, of the air floatation tank, trapezoidal sliding strips are slidably connected in the two rectangular holes, a plurality of first springs are fixed on one sides, away from each other, of the trapezoidal sliding strips, a plurality of stop blocks are fixed on two sides of the air floatation tank, one ends, away from the trapezoidal sliding strips, of the first springs are fixedly connected with the stop blocks and used for giving way to the trapezoidal sliding strips, bearing rods are fixed on two sides of the bottom of the air outlet barrel and used for enabling nozzles to keep an inclined state, the bearing rods are matched with inclined surfaces of the trapezoidal sliding strips and used for extruding the trapezoidal sliding strips into the rectangular holes, the bearing rods are matched with right-angle surfaces, close to one ends of the collecting boxes, of the trapezoidal sliding strips and used for driving the air outlet barrel to rotate anticlockwise, pushing rods are fixed on one sides of the air outlet barrel and matched with the extruding plates and used for driving the extruding plates to move upwards.
7. The laboratory high-efficiency dissolved air flotation sewage treatment device according to claim 6, wherein the dissolved air tank is placed at one end of the air flotation tank, which is far away from the slag discharge port, through the L-shaped plate, the water inlet pipe is fixed at one end of the dissolved air tank, one end of the water inlet pipe extends into the air flotation tank, two communicating pipes are arranged on the outer wall of the dissolved air tank and are matched with the water pump and the air compressor respectively, and the two communicating pipes are used for injecting clean water and air into the dissolved air tank.
8. The laboratory high-efficiency dissolved air flotation wastewater treatment equipment according to claim 7, wherein the nozzle is inclined at an angle of 20-30 degrees and is used for gathering scum on the liquid surface above a slag discharging plate.
9. The laboratory high-efficiency dissolved air floatation sewage treatment device according to claim 8, wherein a plurality of mounting plates are fixed at the bottom of the slag discharging plate, a plurality of hemispherical protruding blocks are fixed on one sides of the mounting plates, which are close to the collecting box, a plurality of knocking rods are fixed on one sides of the concave filter screens, one ends of the knocking rods are sealed and slidingly extended into the air floatation tank, and one ends of the knocking rods are spherical and matched with the hemispherical protruding blocks and used for vibrating the concave filter screens through the knocking rods.
10. The method for using the laboratory high-efficiency dissolved air flotation sewage treatment equipment as claimed in claim 9, which is characterized by comprising the following steps:
S1, injecting sewage to be treated and flocculant into an air flotation tank, stirring to flocculate the sewage, simultaneously, injecting clear water and air into a dissolved air tank to form air-soluble water, and injecting the air flotation tank to float scum in the sewage on the liquid surface;
S2, driving a reciprocating screw rod to rotate by a driving motor so as to enable the air outlet cylinder to move, injecting air into the air outlet cylinder by the air pump, blowing scum on the liquid level to the upper part of the scum discharging plate for aggregation by obliquely blowing down the air outlet cylinder, pushing the first connecting rod by the air outlet cylinder when the air outlet cylinder moves to a specific position so as to pull the scum discharging plate upwards, fishing up the scum and discharging the scum into the collecting box through the scum discharging port, and completing scum removal;
S3, when the slag discharging plate moves upwards, the mounting plate is driven to move synchronously, so that the concave filter screen vibrates, and scum on the filter screen is vibrated and falls down, so that the subsequent treatment is facilitated;
S4, when the reciprocating screw rod rotates, the stirring rod is driven to rotate through the chain wheel and the chain, so that the mixing of sewage, flocculant and gas-soluble water is accelerated, the pressing plate is driven to reciprocate up and down, scum in the middle of the concave filter screen is extruded, the separation of the scum and water is completed, and the separated water is discharged through the return pipe;
S5, after deslagging is finished, discharging the flocculant into the air flotation tank to enable the flocculant to fully react with sewage, and driving the air outlet cylinder to reset by the reciprocating screw rod to release the blocking of the liquid guide hose, wherein the flocculant in the medicament tank flows into the medicament storage cavity in the mobile station and is discharged through the medicament injection pipe, so that the contact range of the flocculant and the sewage is increased.
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| CN119977112B (en) * | 2025-03-25 | 2025-10-28 | 云南云岭广大峪口禽业有限公司 | A wastewater recycling and treatment system for laying hen farms |
| CN120535157B (en) * | 2025-06-18 | 2025-11-07 | 安徽实华工程技术股份有限公司 | An energy-saving wastewater treatment device for oil-based needle coke production |
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