CN117865370A - Efficient multistage treatment process for industrial wastewater - Google Patents
Efficient multistage treatment process for industrial wastewater Download PDFInfo
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- CN117865370A CN117865370A CN202310136165.0A CN202310136165A CN117865370A CN 117865370 A CN117865370 A CN 117865370A CN 202310136165 A CN202310136165 A CN 202310136165A CN 117865370 A CN117865370 A CN 117865370A
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- rotating shaft
- pushing block
- fixedly arranged
- scraping plate
- separation tank
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- 238000000034 method Methods 0.000 title claims abstract description 40
- 239000010842 industrial wastewater Substances 0.000 title claims abstract description 23
- 238000011282 treatment Methods 0.000 title claims abstract description 15
- 238000007790 scraping Methods 0.000 claims abstract description 98
- 238000000926 separation method Methods 0.000 claims abstract description 44
- 238000004065 wastewater treatment Methods 0.000 claims abstract description 15
- 239000003921 oil Substances 0.000 claims description 56
- 238000004140 cleaning Methods 0.000 claims description 33
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 16
- 239000010865 sewage Substances 0.000 claims description 16
- 244000005700 microbiome Species 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 239000010802 sludge Substances 0.000 claims description 6
- 239000013049 sediment Substances 0.000 claims description 5
- 238000011221 initial treatment Methods 0.000 claims description 3
- 102000004190 Enzymes Human genes 0.000 claims description 2
- 108090000790 Enzymes Proteins 0.000 claims description 2
- 238000005273 aeration Methods 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- 239000005515 coenzyme Substances 0.000 claims description 2
- 239000000295 fuel oil Substances 0.000 claims description 2
- 230000004060 metabolic process Effects 0.000 claims description 2
- 230000035764 nutrition Effects 0.000 claims description 2
- 235000016709 nutrition Nutrition 0.000 claims description 2
- 230000003647 oxidation Effects 0.000 claims description 2
- 238000007254 oxidation reaction Methods 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 230000000712 assembly Effects 0.000 abstract 2
- 238000000429 assembly Methods 0.000 abstract 2
- 230000000694 effects Effects 0.000 description 15
- 230000001965 increasing effect Effects 0.000 description 8
- 239000002244 precipitate Substances 0.000 description 6
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 239000002351 wastewater Substances 0.000 description 4
- 230000001174 ascending effect Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 229920001875 Ebonite Polymers 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 239000011499 joint compound Substances 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000010913 used oil Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The invention relates to the technical field of industrial wastewater treatment, in particular to an efficient multistage treatment process for industrial wastewater, which comprises a second rotating shaft rotatably arranged on the inner wall of an oil separation tank, wherein a telescopic rod II is welded at one end of the second rotating shaft away from the inner wall of the oil separation tank, a push block II is fixedly arranged at the movable end of the telescopic rod II, a motor is fixedly arranged above the oil separation tank, the motor is connected with the second rotating shaft by adopting a belt, a telescopic rod I is fixedly arranged at one end of the first rotating shaft away from the oil separation tank, a push block I is fixedly arranged at the movable end of the telescopic rod I, the first rotating shaft is connected with the second rotating shaft by adopting a belt, steering assemblies matched with a scraping plate are arranged between the first rotating shaft and the second rotating shaft, and the steering assemblies are used for enabling the push block I or the push block II to move to the lower part of the scraping plate when contacting with the scraping plate. The invention drives the pushing block I to move on the scraping plate through the rotating shaft I, and cleans accumulated mud on the concave surface of the scraping plate, so as to solve the problem of uneven stress of a conveying chain caused by adhesion of oil mud on the plate surface in the lifting process of the scraping plate.
Description
Technical Field
The invention relates to the technical field of industrial wastewater treatment, in particular to an efficient multistage treatment process for industrial wastewater.
Background
The wastewater treatment of petrochemical bases adopts an oil separation and flotation biochemical wastewater treatment process, the oil separation treatment is a very critical process of a wastewater treatment device, and the operation of oil separation equipment directly influences the effect of wastewater treatment.
The chain type mud scraper is a main component part of oil separation equipment and is also the most widely used oil scraping and mud discharging machine, but in the use process of the chain type mud scraper, a large amount of oil mud is adhered to the upper part of a scraper blade of the mud scraper due to the large viscosity and density of accumulated mud, so that the stress of the scraper blade is uneven, the resistance is increased, deformation or fracture damage occurs, or the scraper blade is stressed downwards due to the adhered oil mud in the ascending process, so that the scraper blade is bent and deformed, and acts on a traction chain, so that the chain is stretched and deformed, and the chain is seriously dropped. The chain scraper is often deformed by the conditions, the chain is broken or broken by the traction device, the oil discharging and mud discharging effects required by the process are affected, the effects of an oil separation tank, a sedimentation tank and the like are reduced, the oil, water and mud separation effect is poor, and the wastewater discharge quality is affected.
For deformation of the scraping plate, a method for improving the strength of the scraping plate or the chain is commonly used in the prior art, but the method does not solve the problem from the source, for example, in the process of lifting the scraping plate, as the oil sludge is attached to the scraping plate, even if the strength of the scraping plate is enhanced to prevent deformation of the scraping plate, the stress at two ends of the chain is still large, and the risk of breakage of the chain can be reduced by enhancing the strength of the chain, but the chain still can be tensioned due to uneven stress, and the chain is still easy to be in a chain-releasing condition.
Therefore, an efficient multistage treatment process for industrial wastewater is provided.
Disclosure of Invention
The invention aims to provide an efficient multistage treatment process for industrial wastewater, which is characterized in that a first pushing block is driven by a first rotating shaft to move on a scraping plate, and accumulated mud on the concave surface of the scraping plate is cleaned, so that the problems in the prior art are solved.
In order to achieve the above purpose, the present invention provides the following technical solutions:
an efficient multistage treatment process for industrial wastewater, comprising:
primary treatment: introducing industrial sewage into an oil separation tank, separating sediment, floating oil or heavy oil and the like in the sewage by using a mud scraper, and removing accumulated mud on a scraper by using a cleaning device to ensure the mud scraper to work stably;
and (3) secondary treatment: the sewage flowing out of the oil separation tank is treated by an activated sludge method, air is continuously blown into the sewage in the aeration tank, and after a period of time, floccules containing a large amount of aerobic microorganisms are formed in the water, and the floccules have a large specific surface area, so that organic matters in the sewage can be adsorbed; meanwhile, the active microorganisms in the floccules take organic matters as foodstuff, obtain energy and continuously grow and proliferate, so that the organic matters can be removed, and the sewage is purified;
and (3) three-stage treatment: adding activated carbon into pretreated industrial sewage, wherein a large number of micropores of the activated carbon absorb organic matters and oxygen in the sewage, a high-concentration nutrition source is provided for the growth and propagation of microorganism groups, enzymes and coenzymes generated in the microorganism metabolism process are absorbed and enriched in the micropores of the activated carbon, and the contact time of microorganisms and the organic matters on the activated carbon is long, so that the organic matters which are difficult to degrade are possibly decomposed by biological oxidation;
the oil separation tank in the primary treatment is internally provided with a plurality of closed-cycle conveying chains, scraping plates are fixedly arranged on the conveying chains, supporting rails matched with the scraping plates are arranged at the top of the oil separation tank, and a plurality of driving units for controlling the conveying chains are fixedly arranged in the oil separation tank;
the two ends of the scraping plate are respectively fixed on the two conveying chains, the two conveying chains vertically encircle the side wall of the oil separation tank, power is provided by the driving unit fixed in the oil separation tank, the scraping plate moves around the oil separation tank when the driving unit is started, when the scraping plate moves to the bottom of the oil separation tank, the scraping plate pushes waste water at the bottom of the tank to deposit along the guide rail, the deposit is pushed into the collecting tank formed at the bottom of the oil separation tank, at the moment, the scraping plate continues to move upwards to the water surface of the waste water, industrial waste oil floats on the water surface, the waste oil on the water surface is transported to the oil collecting device at the top of the oil separation tank in the process of circularly moving the scraping plate to the bottom of the oil separation tank, and the scraping plate moves to the bottom of the oil separation tank, so circulation is realized.
In the sedimentation process of the bottom of the scraper conveying pool, as the scraper is U-shaped, the accumulated mud with larger viscosity and density is often attached to the concave surface of the scraper, and the accumulated mud at the position is not easy to fall off in the moving process of the scraper. Because the horizontal span of scraper blade is great, when the scraper blade upward movement, the middle part load of scraper blade is higher, and after long-time operation, there is crooked condition to take place, and the both ends and the transportation chain fixed connection of scraper blade, the both ends of scraper blade do not take place to warp, get rid of the deposition on the concave surface in the middle part of the scraper blade through cleaning device. The load in the middle of the scraper blade is lightened, and the service life of the scraper blade is prolonged.
Because the uneven adhesion scraper blade of fatlute is last, leads to the atress of two transport chains uneven, when the poor too big of scraper blade both ends atress, the circumstances that takes place the chain off or break the chain easily with the drive unit, through the deposition on cleaning device clearance scraper blade, reduce the atress at scraper blade both ends poor, reduce the risk that the transport chain was taken off the chain.
Preferably, the cleaning device consists of an upper cleaning device and a lower cleaning device;
the upper cleaning device includes: a second rotating shaft is rotatably arranged on the inner wall of the oil separation tank, one end, far away from the inner wall of the oil separation tank, of the second rotating shaft is welded with a second telescopic rod, a second pushing block is fixedly arranged at the movable end of the second telescopic rod, a motor is fixedly arranged above the oil separation tank, and the motor is connected with a second belt of the rotating shaft;
the lower cleaning device includes: the first rotating shaft is rotatably arranged on the inner wall of the oil separation tank and positioned below the second rotating shaft, one end, far away from the oil separation tank, of the first rotating shaft is fixedly provided with a first telescopic rod, the movable end of the first telescopic rod is fixedly provided with a first pushing block, the first rotating shaft is connected with the second rotating shaft by a belt, steering components matched with the scraping plates are arranged between the first pushing block and the second pushing block, and the steering components are used for enabling the first pushing block or the second pushing block to move below the scraping plates when contacting the scraping plates.
Further, a scraper is inlaid at one end of the first pushing block.
Further, a torsion spring III is arranged at the joint of the first pushing block and the fixed rod.
Further, the time for one rotation of the rotation shaft is equal to the time for one plate interval of the scraper.
The first rotating shaft is connected with the motor through a belt, the motor is started, the first rotating shaft drives the telescopic rod to rotate, the first push block and the concave surface of the scraping plate are positioned on the same vertical surface, a spring is arranged in the first telescopic rod, the first telescopic rod rotates along the first rotating shaft, when the first push block contacts the scraping plate, the spring in the first telescopic rod is compressed, the first push block has certain pressure on the scraping plate by virtue of the compression elasticity of the spring, and the first push block moves a certain distance on the concave surface of the scraping plate by virtue of the rotating effect of the first shaft, so that when the first push block is separated from the scraping plate, the moving area is cleaned.
Because in the ascending process of the scraping plate, the first pushing block and the scraping plate are positioned on the same vertical surface, the first pushing block is necessarily contacted with the upper surface of the scraping plate in the downward rotating process of the pushing block, at the moment, the steering assembly in the folding rod is pushed by the scraping plate to bend towards the inner wall of the oil separation tank, and after the scraping plate passes through the pushing block, the steering assembly is reset.
The time of one rotation of the rotating shaft is equal to the time of one plate interval of the scraper blade, so that each time the pushing block returns to the initial position, the pushing block can start to contact with each scraper blade at the same position, and the scraper blade is separated from the same position. The compression amount or the release amount of the spring in the first telescopic rod is guaranteed to be slowly increased, so that the output power of the motor is stable, the fatigue of a rotating shaft of the motor is avoided, and the service life of the motor is prolonged.
The industrial wastewater often has precipitates with larger viscosity, and when the precipitates with larger viscosity fall on the scraper, if the motor forcibly drives the pushing block to pull out the precipitates, the scraper can be tilted, and the chain is disconnected. Therefore, the torsion spring III is arranged at the joint of the first push block and the fixed rod, so that the first push block can deviate at a certain angle, and the first push block is prevented from exerting excessive thrust on the sediment with excessive viscosity.
The first pushing block is L-shaped, a scraper is fixedly arranged on the first pushing block, and when the first pushing block bumps into the device which can not push the deposited mud, the first pushing block deflects, and the scraper scrapes the deposited mud out of the layer. Since the point of each initial contact of the pusher with the blade is the same, the pusher can reduce the thickness of the sludge each time until it is completely eliminated.
As the pushing block is in a continuously moving state in the wastewater, the adhesive attached to the pushing block I can be thrown off in the moving process.
Preferably, the steering assembly comprises a folding rod II fixedly arranged on the pushing block I or the pushing block II, a fixing buckle II is fixedly arranged on the folding rod II, a rotating shaft is rotatably arranged on the fixing buckle II, a fixing buckle I is fixedly arranged on the rotating shaft, a folding rod I is fixedly arranged on the fixing buckle I, the folding rod I is fixedly connected onto the telescopic rod I or the telescopic rod II, a torsion spring II is arranged on the rotating shaft, and the rotating shaft can only rotate unidirectionally.
When the first pushing block is in primary contact with the scraping plate, the first fixing buckle and the second fixing buckle are perpendicular to the bottom surface of the scraping plate, the first fixing buckle is welded with the rotating shaft, a one-way bearing is arranged between the rotating shaft and the first fixing buckle, so that the folding rod cannot rotate around the rotating shaft, when the first telescopic rod is compressed, the first folding rod and the second folding rod are fixedly connected, and the elastic force of the first telescopic rod acts on the first pushing block.
When the first pushing block is separated from the scraping plate and contacts with the top wall of the next scraping plate, the first rotating shaft rotates 180 degrees, the scraping plate moves by half a plate distance, the first fixing buckle and the second fixing buckle rotate to be in a vertical state, the scraping plate and the first pushing block move in opposite directions, the second folding rod is pushed by the scraping plate to rotate towards the inner wall of the oil separation tank, the scraping plate moves upwards smoothly, and the second torsion spring resets the second folding rod after the scraping plate is far away from the second folding rod. After the scraping plates move by one plate interval, the first pushing block contacts with the next scraping plate, and the cycle is performed.
Preferably, a fixed rod is fixedly arranged between the first pushing block and the first folding rod, and a torsion spring I is fixedly arranged at the joint of the fixed rod and the second folding rod.
Further, scrapers are fixedly arranged at two ends of the first pushing block.
The elasticity of the torsion spring III is larger than that of the torsion spring II, when the pushing block I just contacts with the concave surface of the scraper blade, the torsion spring III does not deflect, the elasticity of the telescopic rod I firstly acts on the torsion spring II, the pushing block I can move towards the end part of the scraper blade along the concave surface of the scraper blade under the reaction force of the torsion spring II, and the accumulated mud on the concave surface of the scraper blade is pushed towards the end part of the scraper blade, so that the load of the scraper blade is concentrated on a transport chain as much as possible. The included angle between the fixed rod and the folding rod is increased, and the first telescopic rod is still in a contracted state, so that the cleaning area of the first push block is increased, and the cleaning effect of the pair of scraping plates of the first push block is not influenced.
It should be noted that, since the concave die of the scraper is downward, the mud is preferentially dropped down by the pushing block in any direction, and is not accumulated on the scraper.
The two ends of the first pushing block are fixedly provided with the scraping blades, the first pushing block is in a T shape, the function of the scraping blades is consistent with that described above, and the scraping blades are not repeated here.
Preferably, the adjusting component comprises a rotating shaft III fixedly arranged on the inner wall of the oil separation tank, a gear I is fixedly arranged on the rotating shaft III, and a gear II matched with the gear I is fixedly arranged on the rotating shaft I.
Furthermore, limiting plates are symmetrically and fixedly arranged on the inner wall of the oil separation tank.
Further, the limiting plate is movably provided with a ball.
In the above, in order to avoid the excessive pressure generated by the pair of scrapers of the push block, the elastic coefficient of the inner spring of the telescopic rod I or the compression amount of the telescopic rod I is reduced.
In order to enable the first pushing block to have a better cleaning effect, a group of cleaning devices are arranged above the second rotating shaft, the first rotating shaft is connected with the second rotating shaft through the first gear and the second gear, and the second rotating shaft and the rotating shaft synchronously and reversely rotate while the motor drives the first rotating shaft.
The cleaning device on the second rotating shaft is different from the cleaning rotating shaft in that the top wall of the scraping plate is a plane, so that the second telescopic rod is not provided with a fixing rod, and other parts are reserved.
Specifically, when the first pushing block moves on the scraping plate, the second pushing block moves on the scraping plate and is positioned above the first pushing block, and the second telescopic rod is in a compressed state.
Meanwhile, as the first pushing block can clean the accumulated mud in the concave die of the scraping plate, and part of the cleaned accumulated mud can drop to the next scraping plate, the second pushing block can clean the top wall of the scraping plate while counteracting the thrust, so that the fallen accumulated mud is prevented from being carried to the water surface by the scraping plate or floating in the water, and the accumulated mud is prevented from entering the oil collecting device along with the oil slick on the water surface.
The height of limiting plate equals with the interval of scraper blade, and the limiting plate sets up in the both sides of scraper blade, and when push block one or push block two clean on the scraper blade, can produce transverse force on the scraper blade, the scraper blade can contact with the limiting plate when producing transverse displacement, reduces the transverse offset of scraper blade, avoids the transportation chain too tight and produces the chain that takes off, and the middle part of limiting plate is equipped with the ball, reduces the frictional force between limiting plate and the scraper blade, avoids the lateral wall wearing and tearing of scraper blade.
In addition, as an embodiment of the invention, the fixed rod in the cleaning device is removed, so that the pushing block I is fixedly connected with the folding rod II.
The scraper adopted by the mud scraper is U-shaped, the existing mud scraper also adopts an arc-shaped scraper, and the first pushing block can be directly contacted with the arc-shaped scraper, so that a fixed rod is not required to be arranged. The cleaning mode of the first pushing block on the arc-shaped scraping plate is the same as the cleaning mode of the first pushing block on the U-shaped scraping plate, and the cleaning mode is not repeated here.
Compared with the prior art, the invention has the beneficial effects that:
1. the motor is started, the first rotating shaft is connected with the motor through a belt, the first pushing block and the concave surface of the scraping plate are positioned on the same vertical surface, a spring is arranged in the first telescopic rod, the first telescopic rod rotates along the first rotating shaft, when the first pushing block contacts the scraping plate, the spring is compressed, a pair of scraping plates have certain pressure by means of the compression elasticity of the spring, the first pushing block moves a certain distance on the concave surface of the scraping plate by means of the rotating effect of the first shaft, when the first pushing block is separated from the scraping plate, the moved area on the scraping plate is cleaned, the load of the scraping plate in the ascending process is reduced, and meanwhile, uneven pressure of the scraping plate on a conveying chain due to adhesion of oil sludge is reduced.
2. The pushing force of the pushing block I acting on the scraping plate is counteracted by the pressure of the scraping plate of the pushing block II, so that the pressure of the pushing block I and the pushing block II applied on the scraping plate can be increased by properly increasing the elastic coefficients of the inner springs of the telescopic rod I and the telescopic rod II or reducing the interval between the rotating shaft I and the rotating shaft II, the cleaning effect of the pushing block I on the scraping plate is enhanced, meanwhile, the oil sludge on the top wall of the scraping plate is removed, the stress difference at two ends of the scraping plate is reduced, and the risk of chain dropping of a conveying chain is reduced.
3. The scraping blades are fixedly arranged on the two sides of the first pushing block, and when the first pushing block bumps against the device which can not push the accumulated mud, the scraping blades scrape the accumulated mud off a layer as soon as the first pushing block deflects. Because the point of each initial contact of the push block I and the scraping plate is the same, the thickness of the accumulated mud can be reduced each time by the push block I until the accumulated mud is completely eliminated, the cleaning effect of the push block I is improved, and the generation of a mutation force on the scraping plate is avoided.
Drawings
FIG. 1 is an overall block diagram of the present invention;
FIG. 2 is an enlarged view of a partial structure at A in FIG. 1;
FIG. 3 is a side view of FIG. 1;
FIG. 4 is an enlarged view of a part of the structure at B in FIG. 3;
FIG. 5 is a front view of the cleaning device with the blade disengaged;
FIG. 6 is a side view of FIG. 5;
FIG. 7 is an enlarged view of a part of the structure at C in FIG. 6;
FIG. 8 is a schematic view of the overall structure of the cleaning device when it contacts the blade;
FIG. 9 is an enlarged view of a portion of the structure at D in FIG. 8;
FIG. 10 is a front view of FIG. 8;
FIG. 11 is an enlarged view of a portion of the structure at E in FIG. 10;
FIG. 12 is a side view of FIG. 8;
FIG. 13 is an enlarged view of a portion of the structure at F in FIG. 12;
FIG. 14 is an enlarged view of a portion of the structure at G in FIG. 12;
fig. 15 is an enlarged view of a partial structure at H in fig. 10.
In the figure: 1. a motor; 2. an oil separation tank; 3. a transport chain; 4. a second rotating shaft; 5. a first rotating shaft; 6. a scraper; 401. a second telescopic rod; 402. a pushing block II; 501. a first telescopic rod; 502. folding a first rod; 503. folding a second rod; 504. a fixed rod; 505. a first fixing buckle; 506. a second fixing buckle; 507. a rotating shaft; 508. a pushing block I; 509. a scraper; 510. a third rotating shaft; 511. a first gear; 512. a second gear; 601. a limiting plate; 602. and (3) rolling balls.
Detailed Description
Referring to fig. 1 to 15, the present invention provides an efficient multi-stage treatment process for industrial wastewater, which comprises the following technical schemes:
an efficient multistage treatment process for industrial wastewater, comprising:
example 1
The first rotating shaft 5 is arranged in the oil separation tank or at a position above the middle part, the first push block 508 and the raised sediment contact of the first push block 508 in the rotating process of the first telescopic rod 501 are avoided, the possibility of attachment on the first push block 508 is reduced, the first rotating shaft 5 is connected with the motor 1 through a belt, the motor 1 is started, the first rotating shaft 5 drives the first telescopic rod 501 to rotate, the first push block 508 and the concave surface of the scraping plate 6 are positioned on the same vertical plane, a spring is arranged in the first telescopic rod 501, the first telescopic rod 501 rotates along the first rotating shaft 5, the spring is arranged in the first telescopic rod 501, when the first push block 508 contacts the scraping plate 6, the spring in the first telescopic rod 501 is compressed, the first push block 508 has a certain pressure on the scraping plate 6 by virtue of the compression elasticity of the spring, the first push block 508 moves a certain distance on the concave surface of the scraping plate 6 by virtue of the rotating effect of the first shaft, and when the first push block 508 is separated from the scraping plate 6, the moved area is cleaned.
The elasticity of the torsion spring III is larger than that of the torsion spring II, when the pushing block I508 just contacts the concave surface of the scraper blade 6, the torsion spring III does not deflect, the elasticity of the telescopic rod I501 acts on the torsion spring II firstly, the pushing block I508 moves towards the end part of the scraper blade 6 along the concave surface of the scraper blade 6 under the reaction force of the torsion spring II, and the accumulated mud on the concave surface of the scraper blade 6 is pushed towards the end part of the scraper blade 6 firstly, so that the load of the scraper blade 6 is concentrated on the transport chain 3 as much as possible. At this time, the included angle between the fixed rod 504 and the first push block 508 is increased, and the first telescopic rod 501 is still in a contracted state, so that the cleaning area of the first push block 508 is increased, and the cleaning effect of the first push block 508 on the scraping plate 6 is not affected. Because the first fixing buckle 505 and the second fixing buckle 506 are perpendicular to the bottom surface of the scraping plate 6, the first fixing buckle 505 is welded with the rotating shaft 507, a one-way bearing is arranged between the rotating shaft 507 and the first fixing buckle 505, so that the first folding rod 502 cannot rotate around the rotating shaft 507, when the first telescopic rod 501 is compressed, the first folding rod 502 and the second folding rod 503 are fixedly connected, and the elastic force of the first telescopic rod 501 acts on the first pushing block 508.
When the pushing block I508 is separated from the scraping plate 6 and contacts with the top wall of the next scraping plate 6, the rotating shaft I5 rotates 180 degrees, the scraping plate 6 moves by half a plate distance, the fixing buckle I505 and the fixing buckle II 506 rotate to be in a vertical state, the scraping plate 6 and the pushing block I508 move in opposite directions, the folding rod II 503 is pushed by the scraping plate 6 to rotate towards the inner wall of the oil separation tank 2, the scraping plate 6 moves upwards smoothly, and the torsion spring II resets the folding rod II 503 after the scraping plate 6 is far away from the folding rod II 503. After the blades 6 have moved one plate distance, the first push block 508 comes into contact with the next blade 6, and this cycle is repeated.
The time of one rotation of the rotating shaft 5 is equal to the time of one rotation of the scraping plate 6 by one plate interval, if the plate interval is 2m and the running speed of the scraping plate 6 is 1m/min, 2min is needed for one rotation of the rotating shaft 5. This allows each pusher 508 to come into contact with each blade 6 at the same location and disengage the blade 6 from the same location each time it returns to its original position. The reason is that, because the conveying chain 3 is fixedly installed at two ends of the scraper blade 6, the concave surface of the scraper blade 6 is shielded by the conveying chain 3, so that the first push block 508 cannot clean two ends of the scraper blade 6, if the contact point between the first push block 508 and the concave surface of the scraper blade 6 is random every time, although the effect of cleaning the scraper blade 6 is still achieved, a large stress difference still exists at two ends of the scraper blade 6, and the effect of reducing the stress difference of the conveying chain 3 by the cleaning device is unstable.
The industrial wastewater often has precipitates with larger viscosity, and when the precipitates with larger viscosity fall on the scraper 6, if the motor 1 forcibly drives the pushing block one 508 to pull out the precipitates, the scraper 6 can be tilted, so that the conveying chain 3 is de-chain. Therefore, the torsion spring III is disposed at the connection between the first push block 508 and the fixing rod 504, so that the first push block 508 can deviate at a certain angle, and the first push block 508 is prevented from exerting excessive thrust on the sediment with excessive viscosity.
Example two
The scraper 6 adopted by the mud scraper has the advantages of higher rigidity and difficult deformation when pushing mud accumulation at the bottom of the pool.
In the existing mud scraper, an arc-shaped scraping plate 6 is also adopted, such as a reciprocating double-rail mud scraper produced by the limited company of the environmental protection equipment of various urban sources, hard rubber is fixedly arranged at the top end of the arc-shaped plate, and the cleaning effect is better when the arc-shaped plate sweeps the bottom of a pool. However, the blade 6 is easily deformed by the adhesion of the accumulated mud.
If the invention is applied to such a mud scraper, the adjustment needs to be performed, unlike the U-shaped scraper 6, the fixing rod 504 is not required because the shape of the arc plate does not influence the movement of the first push block 508 in the rising process. Moreover, the U-shaped squeegee 6 of the first embodiment has a concave surface, and the height of the first push block 508 is set to be as high as that of the U-shaped squeegee 6, but when applied to the arc-shaped squeegee 6, the first push block 508 may be appropriately set to be flat. Therefore, when the invention is applied to an arc-shaped plate mud scraper, the first push block 508 is directly connected with the bending component, so that the invention can be used, and the specific use condition is described in detail in the first embodiment and the summary of the invention, and is not repeated here.
Claims (10)
1. An efficient multistage treatment process for industrial wastewater is characterized by comprising the following steps of:
primary treatment: introducing industrial sewage into an oil separation tank (2), separating sediment, floating oil or heavy oil and the like in the sewage by a mud scraper, and removing accumulated mud on a scraper (6) by using a cleaning device to ensure the mud scraper to work stably;
and (3) secondary treatment: the sewage flowing out of the oil separation tank (2) is treated by an activated sludge method, air is continuously blown into the sewage in the aeration tank, and after a period of time, floccules containing a large amount of aerobic microorganisms are formed in the water, and the floccules have a large specific surface area, so that organic matters in the sewage can be adsorbed; meanwhile, the active microorganisms in the floccules take organic matters as foodstuff, obtain energy and continuously grow and proliferate, so that the organic matters can be removed, and the sewage is purified;
and (3) three-stage treatment: adding activated carbon into pretreated industrial sewage, wherein a large number of micropores of the activated carbon absorb organic matters and oxygen in the sewage, a high-concentration nutrition source is provided for the growth and propagation of microorganism groups, enzymes and coenzymes generated in the microorganism metabolism process are absorbed and enriched in the micropores of the activated carbon, and the contact time of microorganisms and the organic matters on the activated carbon is long, so that the organic matters which are difficult to degrade are possibly decomposed by biological oxidation;
wherein, be equipped with a plurality of closed cycle's transportation chain (3) in oil removal pond (2) in the one-level processing, fixed mounting has scraper blade (6) on transportation chain (3), oil removal pond (2) top is equipped with the supporting rail mutually supporting with scraper blade (6), a plurality of drive unit that control transportation chain (3) of fixed mounting in oil removal pond (2).
2. The efficient multistage industrial wastewater treatment process according to claim 1, wherein the process comprises the following steps of: the cleaning device consists of an upper cleaning device and a lower cleaning device;
the upper cleaning device comprises a second rotating shaft (4) rotatably arranged on the inner wall of the oil separation tank (2), a second telescopic rod (401) is fixedly arranged at one end, far away from the inner wall of the oil separation tank (2), of the second rotating shaft (4), a second pushing block (402) is fixedly arranged at the movable end of the second telescopic rod (401), a motor (1) is fixedly arranged above the oil separation tank (2), and the motor (1) is connected with the second rotating shaft (4) through a belt;
the lower cleaning device comprises a first rotating shaft (5) which is rotatably arranged on the inner wall of the oil separation tank (2) and located below a second rotating shaft (4), one end of the first rotating shaft (5) away from the oil separation tank (2) is fixedly provided with a first telescopic rod (501), the movable end of the first telescopic rod (501) is fixedly provided with a first pushing block (508), the first rotating shaft (5) is connected with the second rotating shaft (4) through a belt, steering components which are mutually matched with the first pushing block (508) and the second pushing block (402) are arranged between the first pushing block and the second pushing block (402), and the steering components are used for enabling the first pushing block (508) or the second pushing block (402) to move below the scraping plate (6) when contacting the scraping plate (6).
3. The efficient multistage industrial wastewater treatment process according to claim 2, wherein: the steering assembly comprises a folding rod II (503) fixedly arranged on a pushing block I (508) or a pushing block II (402), a fixing buckle II (506) is fixedly arranged on the folding rod II (503), a rotating shaft (507) is rotatably arranged on the fixing buckle II (506), a fixing buckle I (505) is fixedly arranged on the rotating shaft (507), a folding rod I (502) is fixedly arranged on the fixing buckle I (505), the folding rod I (502) is fixedly connected onto a telescopic rod I (501) or a telescopic rod II (401), a torsion spring II is arranged on the rotating shaft (507), and the rotating shaft (507) can only rotate unidirectionally.
4. The efficient multistage industrial wastewater treatment process according to claim 2, wherein: a rotating shaft III (510) is fixedly arranged between the rotating shaft I (5) and the rotating shaft II (4) on the inner wall of the oil separation tank (2), a gear I (511) is fixedly arranged on the rotating shaft III (510), and a gear II (512) matched with the gear I (511) is fixedly arranged on the rotating shaft I (5).
5. The efficient multistage industrial wastewater treatment process according to claim 2, wherein: a fixed rod (504) is fixedly arranged between the first pushing block (508) and the first folding rod (502), and a torsion spring I is fixedly arranged at the joint of the fixed rod (504) and the second folding rod (503).
6. The efficient multistage industrial wastewater treatment process according to claim 2, wherein: and a torsion spring III is fixedly arranged at the joint of the fixed rod (504) and the push block I (508).
7. The efficient multistage industrial wastewater treatment process according to claim 2, wherein: and a limiting plate (601) is fixedly arranged on the inner wall of the oil separation tank (2).
8. The efficient multistage industrial wastewater treatment process according to claim 2, wherein: and scrapers (509) are fixedly arranged on two sides of the first pushing block (508).
9. The efficient multistage industrial wastewater treatment process according to claim 7, wherein: and the limiting plate (601) is movably provided with a ball (602).
10. The efficient multistage industrial wastewater treatment process according to claim 2, wherein: the time for one rotation of the first rotating shaft (5) is equal to the time for one plate interval of the scraper (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310136165.0A CN117865370A (en) | 2023-02-20 | 2023-02-20 | Efficient multistage treatment process for industrial wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310136165.0A CN117865370A (en) | 2023-02-20 | 2023-02-20 | Efficient multistage treatment process for industrial wastewater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117865370A true CN117865370A (en) | 2024-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310136165.0A Pending CN117865370A (en) | 2023-02-20 | 2023-02-20 | Efficient multistage treatment process for industrial wastewater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117865370A (en) |
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2023
- 2023-02-20 CN CN202310136165.0A patent/CN117865370A/en active Pending
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