CN112266112A - Heavy metal wastewater treatment system - Google Patents
Heavy metal wastewater treatment system Download PDFInfo
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- CN112266112A CN112266112A CN202011154876.3A CN202011154876A CN112266112A CN 112266112 A CN112266112 A CN 112266112A CN 202011154876 A CN202011154876 A CN 202011154876A CN 112266112 A CN112266112 A CN 112266112A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
- C02F1/4672—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- 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
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
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- Engineering & Computer Science (AREA)
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a heavy metal wastewater treatment system and a treatment method thereof, belonging to the field of heavy metal wastewater treatment, the heavy metal wastewater treatment system comprises an electrocatalytic oxidation tank, a PH regulating tank and a heavy metal collecting tank, and the magnetic coagulation tank can be detachably fixed in the container, the top of the coagulation reaction zone and the top of the magnetic powder reaction zone are respectively fixed with a first stirrer, the top of the flocculation reaction zone is fixed with a second stirrer, the top of the tank body is fixed with a high shearing machine, a first-stage magnetic separator and a second-stage magnetic separator, the discharge end of the high shearing machine is communicated with the feed end of the first-stage magnetic separator through a pipeline, the sludge output end of the first-stage magnetic separator is communicated with the feed end of the second-stage magnetic separator through a pipeline, the sludge outlet end of the first sludge return pipe is communicated with the feed end of the high shearing machine, and the sludge outlet end of the second sludge return pipe is fixedly communicated with the bottom of the magnetic powder. The heavy metal wastewater treatment system and the treatment method thereof have the advantages of small occupied area, transferability, full reaction and high precipitation efficiency.
Description
Technical Field
The invention belongs to the field of heavy metal wastewater treatment, and particularly relates to a heavy metal wastewater treatment system and a heavy metal wastewater treatment method.
Background
The heavy metal wastewater is wastewater containing heavy metals discharged in the industrial production processes of mining and metallurgy, mechanical manufacturing, chemical industry, electronics, instruments and the like. Heavy metal wastewater is one of the industrial wastewater which has the most serious environmental pollution and the most harm to human, and the water quality and the water quantity of the heavy metal wastewater are related to the production process. Heavy metals in wastewater generally cannot be decomposed and destroyed, and only can be transferred to the existing position and converted into the physical and chemical forms.
The whole area of occupying of current heavy metal effluent disposal system is big, and the on-the-spot dispersion construction setting between each processing pond, and the construction cycle is long, and can't shift after the construction finishes, and each processing pond also can't be changed, can only tear the reconstruction open, consuming time and wasting force. And a single stirrer is adopted in the sludge precipitation treatment process, the reaction is insufficient, and the sludge precipitation efficiency is low.
Disclosure of Invention
The invention aims to provide a heavy metal wastewater treatment system and a heavy metal wastewater treatment method.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a heavy metal wastewater treatment system, which comprises an electrocatalytic oxidation tank, a PH regulating tank, a heavy metal collecting tank and a magnetic coagulation tank which are sequentially arranged along the water inlet direction, wherein the electrocatalytic oxidation tank, the PH regulating tank, the heavy metal collecting tank and the magnetic coagulation tank can be detachably fixed in a container, the magnetic coagulation tank comprises a tank body, a partition plate, a first stirrer, a doser, a second stirrer, a mud scraper, a high shear machine, a primary magnetic separator, a secondary magnetic separator, a sludge header pipe, a first sludge return pipe, a second sludge return pipe, a first sludge return pump and a second sludge return pump, the internal space of the tank body is sequentially divided into a coagulation reaction zone, a magnetic powder reaction zone, a flocculation reaction zone and a sedimentation zone along the water inlet direction by three partition plates, the coagulation reaction zone is communicated with the magnetic powder reaction zone, and the flocculation reaction zone is communicated with the magnetic powder reaction zone, the flocculation reaction zone is communicated with the sedimentation zone, the tops of the coagulation reaction zone and the magnetic powder reaction zone are respectively fixed with a first stirrer, the stirring ends of the two first stirrers respectively extend into the coagulation reaction zone and the magnetic powder reaction zone, the top of the flocculation reaction zone is fixed with a second stirrer, the stirring end of the second stirrer extends into the flocculation reaction zone, the top of the sedimentation zone is fixed with a mud scraper, the mud scraping end of the mud scraper is positioned at the bottom of the sedimentation zone, the tops of the coagulation reaction zone, the magnetic powder reaction zone and the flocculation reaction zone are respectively fixed with a medicine adding device, the medicine outlet ends of the three medicine adding devices respectively extend into the coagulation reaction zone, the magnetic powder reaction zone and the flocculation reaction zone, the top of the tank body is fixed with a high shear, a primary magnetic separator and a secondary magnetic separator, the discharge end of the high shear is communicated with the feed end of the primary magnetic separator through a magnetic powder pipeline, the magnetic powder output end of the primary magnetic separator extends into the magnetic powder reaction zone, the mud output of one-level magnetic separator passes through the feed end intercommunication of pipeline and second grade magnetic separator, the magnetic output of second grade magnetic separator extends to in the magnetic reaction district, the fixed intercommunication in bottom of sedimentation zone has the mud house steward, the mud house steward is fixed the intercommunication respectively has first mud back flow and second mud back flow, the play mud end of first mud back flow and the feed end intercommunication of high shear, be equipped with first mud backwash pump on the first mud back flow, the bottom of fixed intercommunication in the magnetic reaction district of play mud end of second mud back flow, be equipped with second mud backwash pump on the second mud back flow.
Preferably, the second stirrer comprises a first servo motor, a second servo motor, a first rotating shaft, a first bearing seat, a first belt pulley, a second belt pulley, a flat belt, a hollow stirring shaft, a stirring blade group, a seal box, a second bearing seat, a third bearing seat, a first bevel gear, a second bevel gear, a third bevel gear, a first seal ring, a second rotating shaft, a third rotating shaft, a stirring plate and a cover body, wherein the first servo motor and the first bearing seat are fixed at the top of the flocculation reaction zone, the first bearing seat is positioned at the left side of the first servo motor, the cover body which surrounds the first servo motor and the first bearing seat is fixed at the top of the flocculation reaction zone, the first rotating shaft is fixed at the top of the first servo motor, the first rotating shaft is fixedly sleeved with the first belt pulley, the hollow stirring shaft passes through the first bearing seat and the top wall of the flocculation reaction zone and extends into the flocculation reaction zone, a second belt pulley is fixedly sleeved on the upper part of the hollow stirring shaft, the first belt pulley is in transmission connection with the second belt pulley through a flat belt, a stirring blade group is fixed on the lower part of the hollow stirring shaft, a seal box is fixed on the bottom end of the hollow stirring shaft, a second servo motor is fixed on the top wall in the seal box, a first bevel gear is fixed on the bottom end of the second servo motor, a second bearing seat is fixed on the left side wall in the seal box, a second bevel gear is fixed on the right end of the second rotating shaft, the second bevel gear is meshed with the first bevel gear, the left end of the second rotating shaft sequentially penetrates through the second bearing seat and the seal box and extends out of the seal box, a third bearing seat is fixed on the right side wall in the seal box, a third bevel gear is fixed on the left end of the third rotating shaft, the third bevel gear is meshed with the first bevel gear, and the right end of the third, stirring plates are fixed on the second rotating shaft and the third rotating shaft, and first sealing rings are arranged between the second rotating shaft and the sealing box and between the third rotating shaft and the sealing box.
Preferably, the stirring blade group includes fixed cover, crosspiece and first riser, and the left and right sides wall of fixed cover all is fixed with two crosspieces that distribute the setting from top to bottom, and the outer end of the crosspiece of every side all is fixed with first riser.
Preferably, stirring vane group still includes the slider, a spring, the connecting rod, the dog, the second sealing washer, and the second riser, the storage tank has been seted up to the inside of first riser, the recess has all been seted up to the inside of every crosspiece, sliding connection has the slider in the recess, the position that is close to the first riser in the recess is fixed with the dog, the inner of connecting rod is fixed in the slider, the outer end of connecting rod passes the dog and extends to the storage tank internal fixation and has the second riser, during initial condition, the second riser is located the storage tank completely, the inner of spring is fixed in the slider, the outer end of spring is fixed in the dog, the spring encircles the connecting rod setting, be equipped with the second sealing washer between.
Preferably, the stirring blade group further comprises an arc-shaped plate, the arc-shaped plates are fixed at the bottom ends of the first vertical plates on the left side and the right side, and the inner ends of the arc-shaped plates are fixed on the fixing sleeve.
Preferably, each stirring plate is provided with a plurality of through holes.
Preferably, four corners of the outer walls of the electrocatalytic oxidation tank, the PH adjusting tank, the heavy metal capturing tank and the magnetic coagulation tank are all fixed with mounting blocks and are mounted in the container through bolts.
The invention also provides a heavy metal wastewater treatment method, which adopts the heavy metal wastewater treatment system to carry out treatment and comprises the following steps: s1: sending the wastewater containing heavy metals into an electrocatalytic oxidation tank for electrocatalytic oxidation treatment, S2: sending the wastewater after the electrocatalytic oxidation treatment into a pH adjusting tank to adjust the pH value, S3: and (3) the wastewater after the pH value is adjusted enters a heavy metal trapping pool, a heavy metal trapping agent is added to remove heavy metal ions, and S4: the wastewater treated by the step S3 enters a tank body, sequentially passes through a coagulation reaction zone, a magnetic powder reaction zone, a flocculation reaction zone and a sedimentation zone, a coagulant is added when passing through the coagulation reaction zone, the wastewater is stirred and mixed by a first stirrer, magnetic powder is added when passing through the magnetic powder reaction zone, the wastewater is stirred and mixed by the first stirrer, a flocculating agent is added when passing through the flocculation reaction zone, clear water is discharged from the upper part of the sedimentation zone, a part of precipitated sludge flows back to a high shear machine through a first sludge return pipe, the sludge treated by the high shear machine enters a first-stage magnetic powder separator for magnetic powder separation treatment, the separated magnetic powder is sent into the magnetic powder reaction zone, the separated sludge is sent into a second-stage magnetic powder separator for secondary magnetic powder separation, the separated magnetic powder is sent into the reaction zone, and the separated sludge is discharged and collected, and the other part of sludge flows back to the magnetic powder reaction area through a second sludge return pipe.
The invention has the beneficial effects that:
1. through the setting of first agitator and second agitator, stir the mixture to different modes for the reaction is more abundant, and it is efficient to deposit.
2. The electrocatalytic oxidation tank, the PH adjusting tank, the heavy metal capturing tank and the magnetic coagulation tank are integrated in the container, the container is small in occupied area and convenient to move, the container is directly hoisted to an installation position during construction, the container is not required to be installed in a cast-in-place construction mode, the installation is simple, and the construction period is short.
3. The electrocatalytic oxidation pond, the PH adjusting tank, the heavy metal capturing pond and the magnetic coagulation pond can be replaced by detachable arrangement, so that different working requirements can be met, the original treatment pond is not required to be detached for reconstruction, and time and labor are saved.
4. The stirring board prevents to deposit in the waste water that can stir flocculation reaction zone bottom to with the cooperation of the stirring vane group of top, realize the multimode stirring, make the stirring mix more abundant and even.
5. At the rotation in-process, owing to receive the centrifugal force effect for the second riser outwards moves and stretches the storage tank, improves the stirring width, in order to be adapted to different operating modes, ensures the intensive mixing of flocculating agent and waste water, and the distance of second riser outwards moving increases along with the increase of rotational speed, through the sliding fit of slider and recess, improves the stationarity of second riser motion, makes when stall through the setting of spring, and the second riser can retract and restore to the throne in the storage tank.
6. Effectively remove heavy metals, and has high precipitation efficiency and good dephosphorization effect.
Drawings
FIG. 1 is a system block diagram of the present invention.
Fig. 2 is a schematic top view of the container of the present invention.
FIG. 3 is a schematic diagram of the magnetic coagulation basin according to the present invention.
FIG. 4 is a partial front view schematically illustrating the construction of a second agitator according to the present invention.
Fig. 5 is a front view of the seal box and its upper structure of the present invention.
Fig. 6 is a schematic sectional structure view of the stirring blade group of the present invention.
The labels in the figures are: 100-magnetic coagulation tank, 200-PH regulation tank, 300-electrocatalytic oxidation tank, 400-container, 500-installation block, 600-heavy metal capture tank, 1-tank body, 2-partition plate, 3-first stirrer, 4-doser, 5-second stirrer, 51-first servo motor, 52-second servo motor, 53-first rotating shaft, 54-first bearing seat, 55-first belt pulley, 56-second belt pulley, 57-flat belt, 58-hollow stirring shaft, 59-stirring blade group, 591-fixing sleeve, 592-crosspiece, 593-first vertical plate, 594-sliding block, 595-spring, 596-connecting rod, 597-stop block, 598-second sealing ring, 599-second vertical plate, 5910-a containing tank, 5911-a groove, 5912-an arc-shaped plate, 510-a sealing box, 511-a second bearing seat, 512-a third bearing seat, 513-a first bevel gear, 514-a second bevel gear, 515-a third bevel gear, 516-a first sealing ring, 517-a second rotating shaft, 518-a third rotating shaft, 519-a stirring plate, 520-a cover body, 521-a through hole, 6-a mud scraper, 7-a high shear, 8-a first-level magnetic separator, 9-a second-level magnetic separator, 10-a sludge header pipe, 11-a first sludge return pipe, 12-a second sludge return pipe, 13-a first sludge return pump, 14-a second sludge return pump, 15-a coagulation reaction zone, 16-a magnetic powder reaction zone, 17-a flocculation reaction zone and 18-a sedimentation zone.
Detailed Description
The invention will now be further described with reference to the accompanying drawings and detailed description.
Those not described in detail in this specification are within the skill of the art. In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
As shown in fig. 1 to 6, the heavy metal wastewater treatment system provided in this embodiment includes an electrocatalytic oxidation pond 300, a PH adjusting pond 200, a heavy metal collecting pond 600, and a magnetic coagulation pond 100, which are sequentially arranged along a water inlet direction, wherein the electrocatalytic oxidation pond 300, the PH adjusting pond 200, the heavy metal collecting pond 600, and the magnetic coagulation pond 100 are all detachably fixed in a container 400, and specifically, four corners of outer walls of the electrocatalytic oxidation pond 300, the PH adjusting pond 200, the heavy metal collecting pond, and the magnetic coagulation pond 100 are all fixed with mounting blocks 500 and are mounted in the container 400 through bolts (not shown). The electrocatalytic oxidation tank 300, the PH adjusting tank 200, the heavy metal catching tank 600 and the magnetic coagulation tank 100 are integrated in the container 400, so that the container 400 is convenient to move, the container 400 is directly hoisted to an installation position during construction, the on-site cast-in-place construction and installation are not needed, the installation is simple, and the construction period is short. And the electrocatalytic oxidation tank 300, the PH regulating tank 200 and the magnetic coagulation tank 100 can be replaced by detachable arrangement, so that different working requirements can be met, the original treatment tank does not need to be detached and rebuilt, and time and labor are saved. The magnetic coagulation tank 100 comprises a tank body 1, partition plates 2, a first stirrer 3, a medicine adding device 4, a second stirrer 5, a mud scraper 6, a high shearing machine 7, a primary magnetic separator 8, a secondary magnetic separator 9, a sludge main pipe 10, a first sludge return pipe 11, a second sludge return pipe 12, a first sludge return pump 13 and a second sludge return pump 14, wherein the inner space of the tank body 1 is sequentially divided into a coagulation reaction zone 15, a magnetic powder reaction zone 16, a flocculation reaction zone 17 and a sedimentation zone 18 along the water inlet direction by the three partition plates 2, the coagulation reaction zone 15 is communicated with the magnetic powder reaction zone 16, the magnetic powder reaction zone 16 is communicated with the flocculation reaction zone 17, the flocculation reaction zone 17 is communicated with the sedimentation zone 18, the first stirrer 3 is fixed at the tops of the coagulation reaction zone 15 and the magnetic powder reaction zone 16, and the stirring ends of the two first stirrers 3 respectively extend into the coagulation reaction zone 15 and the magnetic powder reaction zone 16, the top of the flocculation reaction zone 17 is fixed with a second stirrer 5, the stirring end of the second stirrer 5 extends into the flocculation reaction zone 17, the top of the sedimentation zone 18 is fixed with a mud scraper 6, the mud scraping end of the mud scraper 6 is positioned at the bottom of the sedimentation zone 18, the tops of the coagulation reaction zone 15, the magnetic powder reaction zone 16 and the flocculation reaction zone 17 are all fixed with a medicine adding device 4, the medicine outlet ends of the three medicine adding devices 4 respectively extend into the coagulation reaction zone 15, the magnetic powder reaction zone 16 and the flocculation reaction zone 17, the top of the tank body 1 is fixed with a high shearing machine 7, a primary magnetic separator 8 and a secondary magnetic separator 9, the discharge end of the high shearing machine 7 is communicated with the feed end of the primary magnetic separator 8 through a pipeline, the magnetic powder output end of the primary magnetic separator 8 extends into the magnetic powder reaction zone 16, the sludge output end of the primary magnetic separator 8 is communicated with the feed end of the secondary magnetic separator 9 through a pipeline, the magnetic powder output end of the secondary magnetic separator 9 extends into the magnetic powder reaction zone 16, the bottom of the settling zone 18 is fixedly communicated with a sludge main pipe 10, the sludge main pipe 10 is respectively fixedly communicated with a first sludge return pipe 11 and a second sludge return pipe 12, the sludge outlet end of the first sludge return pipe 11 is communicated with the feed end of the high shearing machine 7, the first sludge return pipe 11 is provided with a first sludge return pump 13, the sludge outlet end of the second sludge return pipe 12 is fixedly communicated with the bottom of the magnetic powder reaction zone 16, and the second sludge return pipe 12 is provided with a second sludge return pump 14. Heavy metals in the wastewater are removed through the electrocatalytic oxidation tank 300, and then the pH value of the wastewater is adjusted so as to facilitate subsequent precipitation treatment. Compared with other conventional precipitation processes, such as a high-density precipitation process, the magnetic coagulation precipitation process can improve the precipitation speed of the flocculating constituent, resist impact load, reduce occupied space, further reduce the occupied area of a system, reduce half of the dosage and efficiently remove suspended matters while removing total phosphorus. Through the setting of first agitator 3 and second agitator 5, stir the mixture with different modes for the reaction is more abundant, and it is efficient to deposit.
Further, the second stirrer 5 comprises a first servo motor 51, a second servo motor 52, a first rotating shaft 53, a first bearing seat 54, a first belt pulley 55, a second belt pulley 56, a flat belt 57, a hollow stirring shaft 58, a stirring blade group 59, a seal box 510, a second bearing seat 511, a third bearing seat 512, a first bevel gear 513, a second bevel gear 514, a third bevel gear 515, a first seal ring 516, a second rotating shaft 517, a third rotating shaft 518, a stirring plate 519 and a cover body 520, wherein the first servo motor 51 and the first bearing seat 54 are fixed on the top of the flocculation reaction zone 17, the first bearing seat 54 is positioned on the left side of the first servo motor 51, the cover body 520 surrounding the first servo motor 51 and the first bearing seat 54 is fixed on the top of the flocculation reaction zone 17, the first rotating shaft 53 is fixed on the top of the first servo motor 51, the first rotating shaft 53 is fixedly sleeved with the first belt pulley 55, a hollow stirring shaft 58 penetrates through the first bearing block 54 and the top wall of the flocculation reaction zone 17 and extends into the flocculation reaction zone 17, a second belt pulley 56 is arranged on an upper fixing sleeve 591 of the hollow stirring shaft 58, the first belt pulley 55 and the second belt pulley 56 are in transmission connection through a flat belt 57, a stirring blade group 59 is fixed on the lower portion of the hollow stirring shaft 58, a seal box 510 is fixed at the bottom end of the hollow stirring shaft 58, a second servo motor 52 is fixed on the top wall in the seal box 510, a first bevel gear 513 is fixed at the bottom end of the second servo motor 52, a second bearing block 511 is fixed on the left side wall in the seal box 510, a second bevel gear 514 is fixed at the right end of a second rotating shaft 517, the second bevel gear 514 is meshed with the first bevel gear 513, the left end of the second rotating shaft 517 sequentially penetrates through the second bearing block 511 and the seal box 510 and extends out of the seal box 510, a third bearing block 512 is, a third bevel gear 515 is fixed at the left end of a third rotating shaft 518, the third bevel gear 515 is meshed with a first bevel gear 513, the right end of the third rotating shaft 518 sequentially penetrates through a third bearing seat 512 and a seal box 510 and extends out of the seal box 510, stirring plates 519 are fixed on the second rotating shaft 517 and the third rotating shaft 518, and first seal rings 516 are arranged between the second rotating shaft 517 and the third rotating shaft 518 and the seal box 510. The first servo motor 51 rotates to drive the first rotating shaft 53 to rotate, so that the first belt pulley 55 and the first belt pulley 55 rotate through transmission of the flat belt 57, the second belt pulley 56 rotates to drive the hollow stirring shaft 58 to rotate, the stirring blade group 59 rotates to fully mix the flocculating agent and the wastewater, and meanwhile, the hollow stirring shaft 58 rotates to drive the seal box 510 and the upper structure thereof to rotate to stir the wastewater at the bottom of the flocculation reaction zone to avoid precipitation; the hollow stirring shaft 58 is arranged in a hollow manner, so that a lead of the second servo motor 52 can conveniently penetrate out, the normal operation of the second servo motor 52 is ensured, and a sealing effect is achieved through the first sealing ring 516. The second servo motor 52 rotates to drive the first bevel gear 513 to rotate, so that the second bevel gear 514 and the third bevel gear 515 rotate, the second bevel gear 514 rotates to drive the second rotating shaft 517 and the upper stirring plate 519 thereof to rotate, the third bevel gear 515 rotates to drive the third rotating shaft 518 and the upper stirring plate 519 thereof to rotate, because the rotating directions of the second bevel gear 514 and the third bevel gear 515 are opposite, the rotating direction of the second rotating shaft 517 and the upper stirring plate 519 thereof is opposite to the rotating direction of the third rotating shaft 518 and the upper stirring plate 519 thereof, thus, the stirring plate 519 can further improve the stirring effect on the basis of stirring the wastewater at the bottom of the flocculation reaction zone, and in cooperation with the stirring blade group 59 above, multi-mode stirring is realized, and stirring and mixing are more sufficient and uniform. The first servo motor 51 and the second servo motor 52 are arranged to control the rotation speed accurately, so that the adjustment can be carried out according to actual conditions.
Further, the stirring blade assembly 59 includes a fixing sleeve 591, a crosspiece 592, and a first vertical plate 593, wherein two crosspieces 592 are fixed on both left and right side walls of the fixing sleeve 591, and the first vertical plate 593 is fixed on the outer end of the crosspiece 592 on each side. Through the combined action of crosspiece 592 and first riser 593, horizontal circumferential flow at different heights can be achieved, and the cooperation with stirring board 519 improves the overall stirring mixing efficiency.
Further, stirring vane group 59 still includes slider 594, spring 595, connecting rod 596, dog 597, second sealing washer 598, and second riser 599, storage tank 5910 has been seted up to the inside of first riser 593, recess 5911 has all been seted up to the inside of every crosspiece 592, sliding connection has slider 594 in recess 5911, the position that is close to first riser 593 in recess 5911 is fixed with dog 597, the inner of connecting rod 596 is fixed in slider 594, the outer end of connecting rod 596 passes dog 597 and extends to storage tank 5910 in and is fixed with second riser 599, during initial state, second riser 599 is located storage tank 5910 completely, the inner of spring 595 is fixed in slider 594, the outer end of spring 595 is fixed in dog 597, spring 595 encircles the setting of connecting rod 596, be equipped with second sealing washer 598 between connecting rod 596 and first riser 593. In the rotation process, owing to receive centrifugal force effect, make the outside motion of second riser 599 stretch storage tank 5910, improve the stirring width, in order to be adapted to different operating modes, ensure the intensive mixing of flocculating agent and waste water, the distance of the outside motion of second riser 599 increases along with the increase of rotational speed, sliding fit through slider 594 and recess 5911 improves the stationarity that second riser 599 moved, make when stall through the setting of spring 595, the setting of second riser 599 can retract in the storage tank 5910 resets, play sealed effect through setting up of second sealing washer 598.
Further, the stirring blade set 59 further includes an arc plate 5912, the arc plate 5912 is fixed at the bottom end of the first vertical plate 593 on the left side and the right side, the inner end of the arc plate 5912 is fixed on the fixed sleeve 591, and each stirring plate 519 is provided with a plurality of through holes 521. The arrangement of the through hole 521 and the arc-shaped plate 5912 can further improve the stirring and mixing capability of the stirring blade group 59.
The embodiment also provides a heavy metal wastewater treatment method, which adopts the heavy metal wastewater treatment system as any one of the above to treat, and comprises the following steps: s1: send into the waste water that contains the heavy metal and carry out the electrocatalytic oxidation treatment in the electrocatalytic oxidation pond 300, degrade the organic pollutant in the waste water, S2: the wastewater after the electrocatalytic oxidation treatment is sent into a pH adjusting tank 200 to adjust the pH value so as to facilitate the subsequent precipitation treatment, S3: and (3) the wastewater after the pH value is adjusted enters a heavy metal trapping pool, a heavy metal trapping agent is added to remove heavy metal ions, and S4: the wastewater treated in the step S3 enters the tank body 1, sequentially passes through the coagulation reaction zone 15, the magnetic powder reaction zone 16, the flocculation reaction zone 17 and the sedimentation zone 18, is added with a coagulant when passing through the coagulation reaction zone 15, is stirred and mixed by the first stirrer 3, and colloid and particulate matters in the wastewater are negatively charged and are destabilized by adding the coagulant with positive charge; adding magnetic powder when passing through the magnetic powder reaction zone 16, stirring and mixing through a first stirrer 3, and adding magnetic powder adsorption colloid and particles to form a crystal nucleus of coagulation reaction; adding a flocculating agent when the sludge passes through the flocculation reaction zone 17, stirring and mixing the sludge by a second stirrer 5, adding the flocculating agent to form large-particle stable flocs through bridging and net capturing, and realizing high-efficiency separation of sludge and water by dense flocs with high specific gravity; clear water is discharged from the upper part of the settling zone 18, a part of settled sludge (heavy sludge) flows back to the high shearing machine 7 through the first sludge return pipe 11, the sludge treated by the high shearing machine 7 enters the first-level magnetic powder separator for magnetic powder separation treatment, the separated magnetic powder is sent into the magnetic powder reaction zone 16, the separated sludge is sent into the second-level magnetic powder separator for secondary magnetic powder separation, the separated magnetic powder is sent into the magnetic powder reaction zone 16, the separated sludge is discharged and collected, and the other part of sludge (light sludge) flows back to the magnetic powder reaction zone 16 through the second sludge return pipe 12.
The invention can effectively remove heavy metals, and has high precipitation efficiency and good dephosphorization effect. The pools are integrated in the container 400, so that the occupied area is small, the transfer can be realized, the construction is simple, and the construction period is short.
The control mode of the invention is automatically controlled by the controller, the control circuit of the controller can be realized by simple programming of a person skilled in the art, the supply of the power supply also belongs to the common knowledge in the field, and the invention is mainly used for protecting mechanical devices, so the control mode and the circuit connection are not explained in detail in the invention.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art; the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. The utility model provides a heavy metal wastewater treatment system which characterized in that:
comprises an electrocatalytic oxidation tank, a PH regulating tank, a heavy metal collecting tank and a magnetic coagulation tank which are sequentially arranged along the water inlet direction;
the electrocatalytic oxidation tank, the PH regulating tank, the heavy metal collecting tank and the magnetic coagulation tank can be detachably fixed in the container;
the magnetic coagulation tank comprises a tank body, a partition plate, a first stirrer, a chemical adding device, a second stirrer, a mud scraper, a high shear, a primary magnetic separator, a secondary magnetic separator, a sludge main pipe, a first sludge return pipe, a second sludge return pipe, a first sludge return pump and a second sludge return pump;
the inner space of the tank body is sequentially divided into a coagulation reaction area, a magnetic powder reaction area, a flocculation reaction area and a sedimentation area by three division plates along the water inlet direction, the coagulation reaction area is communicated with the magnetic powder reaction area, the magnetic powder reaction area is communicated with the flocculation reaction area, and the flocculation reaction area is communicated with the sedimentation area;
the top of the coagulation reaction area and the top of the magnetic powder reaction area are both fixed with first stirrers, the stirring ends of the two first stirrers respectively extend into the coagulation reaction area and the magnetic powder reaction area, the top of the flocculation reaction area is fixed with a second stirrer, the stirring end of the second stirrer extends into the flocculation reaction area, the top of the sedimentation area is fixed with a mud scraper, and the mud scraping end of the mud scraper is positioned at the bottom of the sedimentation area;
the top parts of the coagulation reaction area, the magnetic powder reaction area and the flocculation reaction area are all fixed with dosers, and the medicine outlet ends of the three dosers respectively extend into the coagulation reaction area, the magnetic powder reaction area and the flocculation reaction area;
a high shear, a primary magnetic separator and a secondary magnetic separator are fixed at the top of the tank body, the discharge end of the high shear is communicated with the feed end of the primary magnetic separator through a pipeline, the magnetic powder output end of the primary magnetic separator extends into the magnetic powder reaction zone, the sludge output end of the primary magnetic separator is communicated with the feed end of the secondary magnetic separator through a pipeline, and the magnetic powder output end of the secondary magnetic separator extends into the magnetic powder reaction zone;
the fixed intercommunication in bottom in sedimentation zone has the mud house steward, the mud house steward is fixed the intercommunication respectively and has first mud back flow and second mud back flow, the play mud end of first mud back flow with the feed end intercommunication of high shear, be equipped with first sludge reflux pump on the first mud back flow, the fixed intercommunication in play mud end of second mud back flow is in the bottom in magnetic reaction zone, be equipped with second sludge reflux pump on the second mud back flow.
2. The heavy metal wastewater treatment system according to claim 1, wherein:
the second stirrer comprises a first servo motor, a second servo motor, a first rotating shaft, a first bearing seat, a first belt pulley, a second belt pulley, a flat belt, a hollow stirring shaft, a stirring blade group, a sealing box, a second bearing seat, a third bearing seat, a first bevel gear, a second bevel gear, a third bevel gear, a first sealing ring, a second rotating shaft, a third rotating shaft, a stirring plate and a cover body;
the top of the flocculation reaction zone is fixed with a first servo motor and a first bearing seat, the first bearing seat is positioned on the left side of the first servo motor, the top of the flocculation reaction zone is fixed with a cover body which surrounds the first servo motor and the first bearing seat, the top of the first servo motor is fixed with a first rotating shaft, the first rotating shaft is fixedly sleeved with a first belt pulley, the hollow stirring shaft penetrates through the top walls of the first bearing seat and the flocculation reaction zone and extends into the flocculation reaction zone, the upper part of the hollow stirring shaft is fixedly sleeved with a second belt pulley, the first belt pulley and the second belt pulley are connected through a flat belt in a transmission manner, the lower part of the hollow stirring shaft is fixed with a stirring blade group, the bottom end of the hollow stirring shaft is fixed with a seal box, the top wall in the seal box is fixed with a second servo motor, and the bottom end of the second servo motor is fixed with a first bevel gear, the left side wall of the inside of seal box is fixed with the second bearing frame, the fixed second bevel gear of right-hand member of second pivot, second bevel gear and first bevel gear meshing, the left end of second pivot passes in proper order second bearing frame and seal box just extend to outside the seal box, the right side wall of the inside of seal box is fixed with the third bearing frame, the fixed third bevel gear of left end of third pivot, third bevel gear and first bevel gear meshing, the right-hand member of third pivot passes in proper order third bearing frame and seal box just extend to outside the seal box, all be fixed with the stirring board in second pivot and the third pivot, all be equipped with first sealing washer between second pivot and third pivot and the seal box.
3. The heavy metal wastewater treatment system according to claim 2, characterized in that:
the stirring blade group comprises a fixed sleeve, a crosspiece and a first vertical plate;
the left side wall and the right side wall of the fixed sleeve are respectively fixed with two crosspieces which are distributed up and down, and the outer end of each crosspiece on each side is respectively fixed with a first vertical plate.
4. The heavy metal wastewater treatment system according to claim 3, wherein:
the stirring blade group further comprises a sliding block, a spring, a connecting rod, a stop block, a second sealing ring and a second vertical plate;
an accommodating groove is formed in the first vertical plate;
every the inside of crosspiece all is seted up flutedly, sliding connection has the slider in the recess, be close to in the recess the rigidity of riser has the dog, the inner of connecting rod is fixed in the slider, the outer end of connecting rod is passed the dog just extends to the storage tank internal fixation has the second riser, during initial state, the second riser is located completely in the storage tank, the inner of spring is fixed in the slider, the outer end of spring is fixed in the dog, the spring encircles the connecting rod sets up, be equipped with the second sealing washer between connecting rod and the riser.
5. The heavy metal wastewater treatment system according to claim 3, wherein:
the stirring blade group further comprises an arc-shaped plate, the bottom ends of the first vertical plates on the left side and the right side are respectively fixed with the arc-shaped plate, and the inner ends of the arc-shaped plates are fixed on the fixed sleeve.
6. The heavy metal wastewater treatment system according to claim 2, characterized in that:
each stirring plate is provided with a plurality of through holes.
7. The heavy metal wastewater treatment system according to claim 1, wherein:
and four corners of the outer walls of the electrocatalytic oxidation tank, the PH regulating tank, the heavy metal capturing tank and the magnetic coagulation tank are all fixed with mounting blocks and are mounted in the container through bolts.
8. A heavy metal wastewater treatment method is characterized in that:
the heavy metal wastewater treatment system of any one of claims 1 to 7, comprising the steps of:
s1: sending the wastewater containing heavy metals into an electrocatalytic oxidation tank for electrocatalytic oxidation treatment;
s2: feeding the wastewater after the electrocatalytic oxidation treatment into a pH adjusting tank to adjust the pH value;
s3: the wastewater with the adjusted pH value enters a heavy metal collecting tank, and a heavy metal collecting agent is added to remove heavy metal ions;
s4: the wastewater treated by the step S3 enters a tank body, sequentially passes through a coagulation reaction zone, a magnetic powder reaction zone, a flocculation reaction zone and a sedimentation zone, a coagulant is added when passing through the coagulation reaction zone, the wastewater is stirred and mixed by a first stirrer, magnetic powder is added when passing through the magnetic powder reaction zone, the wastewater is stirred and mixed by the first stirrer, a flocculating agent is added when passing through the flocculation reaction zone, the wastewater is stirred and mixed by a second stirrer, clear water is discharged from the upper part of the sedimentation zone, a part of precipitated sludge flows back to a high shear machine through a first sludge return pipe, the sludge treated by the high shear machine enters a first-stage magnetic powder separator for magnetic powder separation treatment, the separated magnetic powder is sent into the magnetic powder reaction zone, the separated sludge is sent into a second-stage magnetic powder separator for secondary magnetic powder separation, the separated magnetic powder is sent into the magnetic powder reaction zone, and the separated sludge is discharged and, and the other part of sludge flows back to the magnetic powder reaction area through a second sludge return pipe.
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| CN202011154876.3A CN112266112A (en) | 2020-10-26 | 2020-10-26 | Heavy metal wastewater treatment system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112919596A (en) * | 2021-01-29 | 2021-06-08 | 天津市润达金源水务有限公司 | Device and method for recycling magnetic powder in magnetic flocculation system |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205838641U (en) * | 2016-07-29 | 2016-12-28 | 青岛洛克环保科技有限公司 | A kind of magnetic flocculation water treatment system |
| CN106669493A (en) * | 2017-03-20 | 2017-05-17 | 深圳市玖创科技有限公司 | Stirring and mixing equipment of electrode paste of lithium battery convenient to clean |
| CN107376741A (en) * | 2017-07-20 | 2017-11-24 | 盐城亿之诺机械有限公司 | A kind of coating mixed stirring device |
| CN107673536A (en) * | 2017-11-10 | 2018-02-09 | 徐得强 | A kind of safe and efficient sanitary sewage environment protection treating device |
| CN107697995A (en) * | 2017-09-21 | 2018-02-16 | 苏州仁益生物科技有限公司 | A kind of environment-friendly type Industrial Wastewater Treatment equipment of variable range stirring |
| CN109368871A (en) * | 2018-11-30 | 2019-02-22 | 广东环境保护工程职业学院 | Chemical plating waste water deep treatment method |
| CN109502812A (en) * | 2018-12-06 | 2019-03-22 | 尹晟 | A kind of animal husbandry sewage-treatment plant |
| CN109502809A (en) * | 2018-11-30 | 2019-03-22 | 广东工业大学 | Copper-containing wastewater treatment process and application |
| CN209005594U (en) * | 2018-09-20 | 2019-06-21 | 江苏双辉环境科技有限公司 | A kind of high-efficiency environment friendly sewage treatment blender |
| CN209740830U (en) * | 2019-03-28 | 2019-12-06 | 海南康岛生态环境科技股份有限公司 | Waste water treatment's cyclic utilization device |
| CN111547930A (en) * | 2020-06-03 | 2020-08-18 | 陕西大唐水务有限责任公司 | Receive magnetism intelligence integration water prosthetic devices |
-
2020
- 2020-10-26 CN CN202011154876.3A patent/CN112266112A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205838641U (en) * | 2016-07-29 | 2016-12-28 | 青岛洛克环保科技有限公司 | A kind of magnetic flocculation water treatment system |
| CN106669493A (en) * | 2017-03-20 | 2017-05-17 | 深圳市玖创科技有限公司 | Stirring and mixing equipment of electrode paste of lithium battery convenient to clean |
| CN107376741A (en) * | 2017-07-20 | 2017-11-24 | 盐城亿之诺机械有限公司 | A kind of coating mixed stirring device |
| CN107697995A (en) * | 2017-09-21 | 2018-02-16 | 苏州仁益生物科技有限公司 | A kind of environment-friendly type Industrial Wastewater Treatment equipment of variable range stirring |
| CN107673536A (en) * | 2017-11-10 | 2018-02-09 | 徐得强 | A kind of safe and efficient sanitary sewage environment protection treating device |
| CN209005594U (en) * | 2018-09-20 | 2019-06-21 | 江苏双辉环境科技有限公司 | A kind of high-efficiency environment friendly sewage treatment blender |
| CN109368871A (en) * | 2018-11-30 | 2019-02-22 | 广东环境保护工程职业学院 | Chemical plating waste water deep treatment method |
| CN109502809A (en) * | 2018-11-30 | 2019-03-22 | 广东工业大学 | Copper-containing wastewater treatment process and application |
| CN109502812A (en) * | 2018-12-06 | 2019-03-22 | 尹晟 | A kind of animal husbandry sewage-treatment plant |
| CN209740830U (en) * | 2019-03-28 | 2019-12-06 | 海南康岛生态环境科技股份有限公司 | Waste water treatment's cyclic utilization device |
| CN111547930A (en) * | 2020-06-03 | 2020-08-18 | 陕西大唐水务有限责任公司 | Receive magnetism intelligence integration water prosthetic devices |
Non-Patent Citations (3)
| Title |
|---|
| 李立欣等: "《环境化学》", 31 August 2017, 哈尔滨工业大学出版社 * |
| 许燕新等: "《物理》", 31 August 2015, 东北师范大学出版社 * |
| 谭玉芳等, 中国建材工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112919596A (en) * | 2021-01-29 | 2021-06-08 | 天津市润达金源水务有限公司 | Device and method for recycling magnetic powder in magnetic flocculation system |
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