CN111732261A - Wastewater treatment equipment for stainless steel casting production and treatment method thereof - Google Patents
Wastewater treatment equipment for stainless steel casting production and treatment method thereof Download PDFInfo
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- CN111732261A CN111732261A CN202010514788.3A CN202010514788A CN111732261A CN 111732261 A CN111732261 A CN 111732261A CN 202010514788 A CN202010514788 A CN 202010514788A CN 111732261 A CN111732261 A CN 111732261A
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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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
- C02F1/484—Treatment of water, waste water, or sewage with magnetic or electric fields using electromagnets
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
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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
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F7/00—Aeration of stretches of water
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Abstract
The invention discloses a wastewater treatment device for stainless steel casting production and a treatment method thereof, and belongs to the technical field of stainless steel casting production, wherein the wastewater treatment device comprises a sedimentation tank, an electromagnetic rod, a neutralization tank, a wall scraping rod, an inner threaded rod, a telescopic cylinder, a fifth connecting pipe, a PH sensor and a purification box, wherein the neutralization tank is arranged on the right side of the sedimentation tank, the first connecting pipe is arranged on the right side above the sedimentation tank, a first motor is arranged in the middle of the upper part of the neutralization tank, and a spiral stirring paddle is arranged on a rotating shaft; a second connecting pipe is arranged below the neutralizing tank, a treatment box is arranged below the connecting pipe, and a piston is arranged on the left side of the internal thread rod; and a sixth connecting pipe is installed below the right side of the treatment box, a second control valve is installed on the seventh connecting pipe, and a purification box is installed below the nozzle. According to the invention, the sedimentation tank can be used for preliminarily filtering the wastewater, and the electromagnetic rod can be used for recycling the metal waste in the wastewater.
Description
Technical Field
The invention belongs to the technical field of stainless steel casting production, and particularly relates to a wastewater treatment device for stainless steel casting production and a treatment method thereof.
Background
Stainless steel casting adopts the steel casting of stainless steel material production, under the various medium corrosion conditions of mainly used, stainless steel casting produces a large amount of waste water in the production process, these waste water direct discharge can cause very big pollution to the environment, and the consumption of a large amount of water resources makes the manufacturing cost of stainless steel casting increase, still contain a certain amount of metal piece in the waste water, have certain recycle value, direct discharge causes the waste of a resource, still can cause heavy metal pollution, cause the destruction to people's living environment. The existing wastewater treatment device for stainless steel casting production has the advantages of single structure, unsatisfactory treatment effect, inefficient treatment method and unsatisfactory treatment effect.
Disclosure of Invention
The invention aims to provide a wastewater treatment device for stainless steel casting production and a treatment method thereof, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a wastewater treatment device for stainless steel casting production and a treatment method thereof comprise a sedimentation tank, an electromagnetic rod, a neutralization tank, a wall scraping rod, an inner threaded rod, a telescopic cylinder, a fifth connecting pipe, a PH sensor and a purification box, wherein a sewage inlet pipe is arranged on the left side above the sedimentation tank, a plurality of filter screens are uniformly distributed in the sedimentation tank from left to right, and a sewage discharge pipe is arranged below the space between two adjacent filter screens on the left and right; a neutralizing tank is arranged on the right side of the sedimentation tank, a first connecting pipe is arranged on the right side above the sedimentation tank, a first water pump is arranged on the first connecting pipe, the right side of the first connecting pipe is connected to the left side above the neutralizing tank, a first motor is arranged in the middle of the upper portion of the neutralizing tank, a rotating shaft is arranged below the first motor, a spiral stirring paddle is arranged on the rotating shaft, connecting rods are arranged on the left side and the right side of the rotating shaft, and a wall scraping rod is arranged on one side, away from the rotating shaft, of each connecting rod; a second connecting pipe is arranged below the neutralizing tank, a processing box is arranged below the second connecting pipe, a second motor is arranged on the right side of the processing box, a lead screw is arranged on the left side of the second motor, an inner threaded rod is connected to the left side of the lead screw, a piston is arranged on the left side of the inner threaded rod, a partition plate is arranged on the left side of the interior of the processing box, and a telescopic cylinder is arranged below the left side of the neutralizing tank; the utility model discloses a neutralization tank, including the processing case, handle the right side below of case and install the sixth connecting pipe, install second water pump and PH sensor on the sixth connecting pipe, the top of sixth connecting pipe is connected with seventh connecting pipe and eighth connecting pipe respectively, install the second control valve on the seventh connecting pipe, install the third control valve on the eighth connecting pipe, one side that the sixth connecting pipe was kept away from to the eighth connecting pipe is connected to the right side top of neutralization tank, the nozzle is installed to the right side below of seventh connecting pipe, the purifying box is installed to the below of nozzle.
As a further scheme of the invention: the device is characterized in that a first control valve is arranged on the blow-off pipe, supporting rods are arranged on the left side and the right side above the blow-off pipe, and electromagnetic rods are arranged on the supporting rods.
As a further scheme of the invention: scrape the laminating of one side that the connecting rod was kept away from to the wall pole and the inner wall of neutralization jar, the top right side of neutralization jar is installed and is added the agent storehouse, is provided with the scale mark on adding the front in agent storehouse.
As a further scheme of the invention: the shaft sleeve is installed between the piston and the internal thread rod, a plurality of through holes are uniformly distributed in the piston, and the lower portion of the telescopic cylinder is connected with the partition plate.
As a further scheme of the invention: the right side of the lower part of the treatment box is provided with a collection box, the left side of the collection box is provided with a third connecting pipe, and the upper part of the third connecting pipe is connected to the left side of the lower part of the treatment box.
As a further scheme of the invention: and a plurality of fourth connecting pipes are uniformly distributed at the bottom of the neutralization tank, one side of the fourth connecting pipe, which is far away from the neutralization tank, is connected to a fifth connecting pipe, an aeration valve is arranged on the fifth connecting pipe, and one side of the fifth connecting pipe, which is far away from the fourth connecting pipe, is provided with an aeration device.
As a further scheme of the invention: the outlet pipe is installed to the below of purifying box, and the inside of purifying box is provided with the gravel layer, and the below on gravel layer is provided with the active carbon adsorption layer, and the below on active carbon adsorption layer is provided with the filtration rete.
A wastewater treatment method for stainless steel casting production comprises the following steps: introducing wastewater into a sedimentation tank through a sewage inlet pipe, electrifying an electromagnetic rod, adsorbing metal waste in the wastewater by the electromagnetic rod, primarily filtering the wastewater through a filter screen, discharging filtered impurities through a sewage discharge pipe, then powering off the electromagnetic rod to enable the metal waste adsorbed on the electromagnetic rod to fall off, and discharging the metal waste through the sewage discharge pipe for recycling; then the wastewater in the sedimentation tank is conveyed into a neutralization tank through a first water pump, a proper amount of acid-base neutralization liquid is added into the neutralization tank through an additive adding bin, a rotating shaft is driven by a first motor to drive a spiral stirring paddle to rotate, the spiral stirring paddle stirs the wastewater in the neutralization tank, meanwhile, an aeration device aerates the neutralization tank to increase the oxygen content in the neutralization tank, after the wastewater in the neutralization tank and the acid-base neutralization liquid react, the reacted liquid is conveyed into a treatment tank through a second connecting pipe, a screw rod is driven by a second motor to rotate, the screw rod is provided with a threaded rod to move leftwards, the internal threaded rod drives a piston to move leftwards, the piston extrudes sediment generated by the neutralization reaction, so that the water flows to the right side of the piston through a through hole, then a telescopic cylinder drives a partition plate to move upwards, the piston continues to move leftwards, and the piston pushes the sediment into a collection tank, and then pumping out the water in the treatment tank through a second water pump, detecting the pH value of the wastewater through a pH sensor, opening a second control valve if the pH value of the wastewater is within a certain set range, closing a third control valve, enabling the wastewater to enter a purification tank, purifying the wastewater through the purification tank, collecting the purified water through a water outlet pipe, closing the second control valve if the pH value of the wastewater is not within the certain set range, opening the third control valve, and enabling the wastewater to return to a neutralization tank again for secondary neutralization.
Compared with the prior art, the invention can carry out preliminary filtration on the wastewater through the arranged sedimentation tank, and can recycle the metal waste in the wastewater through the arranged electromagnetic rod; through the matched use of the second motor, the screw rod, the internal threaded rod, the piston, the partition plate and the telescopic cylinder, precipitates generated in the neutralization reaction can be filtered; the aeration device and the aeration valve are matched for use, so that the oxygen content in the neutralization tank can be improved, and the neutralization reaction in the neutralization tank is more efficient; through the cooperation use between the second water pump that sets up, PH sensor, second control valve, third control valve, seventh connecting pipe and the eighth connecting pipe, during the jar of neutralization is carried again to waste water after can neutralizing, carries out secondary neutralization reaction, makes the processing to waste water more thorough.
Drawings
FIG. 1 is a schematic structural diagram of a wastewater treatment device for stainless steel casting production and a treatment method thereof.
FIG. 2 is a schematic view of a cross-sectional structure of a neutralization tank in a plan view in a wastewater treatment apparatus for stainless steel casting production and a treatment method thereof.
FIG. 3 is a schematic diagram of a piston in a right view structure of a wastewater treatment device for stainless steel casting production and a treatment method thereof.
FIG. 4 is a schematic view of a top view of a settling tank in a wastewater treatment apparatus for stainless steel casting production and a treatment method thereof.
FIG. 5 is a schematic structural view of a treatment tank after a partition plate is opened in a wastewater treatment device for stainless steel casting production and a treatment method thereof.
In the figure: 1. a sedimentation tank; 2. a sewage inlet pipe; 3. a filter screen; 4. a support bar; 5. an electromagnetic bar; 6. a blow-off pipe; 7. a first control valve; 8. a first connecting pipe; 9. a first water pump; 10. a neutralization tank; 11. a first motor; 12. a rotating shaft; 13. a helical stirring paddle; 14. a connecting rod; 15. a wall scraping rod; 16. a dosing bin; 17. scale lines; 18. a second connecting pipe; 19. a treatment tank; 20. a second motor; 21. a screw rod; 22. an inner threaded rod; 23. a shaft sleeve; 24. a piston; 25. a through hole; 26. a partition plate; 27. a telescopic cylinder; 28. a third connecting pipe; 29. a collection box; 30. an aeration device; 31. a fifth connecting pipe; 32. an aeration valve; 33. a fourth connecting pipe; 34. a sixth connecting pipe; 35. a second water pump; 36. a pH sensor; 37. a seventh connecting pipe; 38. a second control valve; 39. an eighth connecting pipe; 40. a third control valve; 41. a nozzle; 42. a purification box; 43. a sandstone layer; 44. an activated carbon adsorption layer; 45. a filtration membrane layer; 46. and (5) discharging a water pipe.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
Referring to fig. 1-5, a wastewater treatment apparatus for stainless steel casting production and a treatment method thereof includes a settling tank 1, an electromagnetic rod 5, a neutralization tank 10, a wall scraping rod 15, an internal thread rod 22, a telescopic cylinder 27, a fifth connecting pipe 31, a PH sensor 36 and a purification box 42; the utility model discloses a sewage treatment device, including sedimentation tank 1, sewage inlet pipe 2 is installed in sedimentation tank 1's top left side, 1 inside from left to right equipartition of sedimentation tank is provided with a plurality of filter screens 3, about the below between two adjacent filter screens 3 install blow off pipe 6, be provided with first control valve 7 on the blow off pipe 6, bracing piece 4 is installed to the left and right sides of blow off pipe 6 top, install electromagnetic rod 5 on the bracing piece 4, filter waste water through the filter screen 3 that sets up, make electromagnetic rod 5 circular telegram adsorb the metal waste in the waste water simultaneously, earlier carry out the blowdown through blow off pipe 6 with the precipitate, then with electromagnetic rod 5 outage again, make metal waste drop from electromagnetic rod 5 and discharge and retrieve through blow off pipe 6.
The neutralization tank 10 is provided with a second connecting pipe 18 below, the treatment tank 19 is arranged below the second connecting pipe 18, the second motor 20 is arranged on the right side of the treatment tank 19, the lead screw 21 is arranged on the left side of the second motor 20, the left side of the lead screw 21 is connected with an inner threaded rod 22, the piston 24 is arranged on the left side of the inner threaded rod 22, a shaft sleeve 23 is arranged between the piston 24 and the inner threaded rod 22, a plurality of through holes 25 are uniformly distributed on the piston 24, a partition plate 26 is arranged on the left side inside the treatment tank 19, a telescopic cylinder 27 is arranged below the left side of the neutralization tank 10, the lower side of the telescopic cylinder 27 is connected with the partition plate 26, the collection tank 29 is arranged on the right side below the treatment tank 19, the third connecting pipe 28 is arranged on the left side of the collection tank 29, and the upper.
A plurality of fourth connecting pipes 33 are uniformly arranged at the bottom of the neutralization tank 10, one side, far away from the neutralization tank 10, of each fourth connecting pipe 33 is connected to a fifth connecting pipe 31, an aeration valve 32 is arranged on each fifth connecting pipe 31, one side, far away from the fourth connecting pipes 33, of each fifth connecting pipe 31 is provided with an aeration device 30, the oxygen content in the neutralization tank 10 can be increased through the cooperation between the aeration devices 30 and the aeration valves 32, and the neutralization reaction is more efficient.
A sixth connecting pipe 34 is installed below the right side of the treatment tank 19, a second water pump 35 and a pH sensor 36 are installed on the sixth connecting pipe 34, the type of the pH sensor 36 is S400-02-Y, a seventh connecting pipe 37 and an eighth connecting pipe 39 are respectively connected above the sixth connecting pipe 34, a second control valve 38 is installed on the seventh connecting pipe 37, a third control valve 40 is installed on the eighth connecting pipe 39, one side of the eighth connecting pipe 39, which is far away from the sixth connecting pipe 34, is connected to the upper part of the right side of the neutralization tank 10, a nozzle 41 is installed below the right side of the seventh connecting pipe 37, a purification tank 42 is installed below the nozzle 41, a water outlet pipe 46 is installed below the purification tank 42, a sandstone layer 43 is arranged inside the purification tank 42, an activated carbon adsorption layer 44 is arranged below the sandstone layer 43, a filter membrane layer 45 is arranged below the activated carbon adsorption layer 44, and the sandstone layer 43 is arranged The activated carbon adsorption layer 44 and the filtering membrane layer 45 perform multiple purification on the wastewater.
A wastewater treatment method for stainless steel casting production comprises the following steps: firstly, wastewater is led into a sedimentation tank 1 through a sewage inlet pipe 2, an electromagnetic rod 5 is electrified, the electromagnetic rod 5 adsorbs metal waste in the wastewater, the wastewater is preliminarily filtered through a filter screen 3, filtered impurities are discharged through a sewage discharge pipe 6, then the electromagnetic rod 5 is powered off, so that the metal waste adsorbed on the electromagnetic rod 5 falls off, and the metal waste is discharged through the sewage discharge pipe 6 for recovery; then the wastewater in the sedimentation tank 1 is conveyed into a neutralization tank 10 through a first water pump 9, a proper amount of acid-base neutralization liquid is added into the neutralization tank 10 through an additive adding bin 16, a rotating shaft 12 is driven by a first motor 11 to drive a spiral stirring paddle 13 to rotate, the spiral stirring paddle 13 stirs the wastewater in the neutralization tank 10, meanwhile, aeration is carried out into the neutralization tank 10 through an aeration device 30 to increase the oxygen content in the neutralization tank 10, after the reaction of the wastewater in the neutralization tank 10 and the acid-base neutralization liquid is completed, the reacted liquid is conveyed into a treatment box 19 through a second connecting pipe 18, a screw rod 21 is driven to rotate through a second motor 20, a threaded rod 22 in the screw rod 21 moves leftwards, the internal threaded rod 22 drives a piston 24 to move leftwards, the piston 24 extrudes sediments generated by the neutralization reaction, water flows to the right side of the piston 24 through a through hole 25, and then a telescopic cylinder 27 drives a partition plate 26 to move upwards, and then the piston 24 is moved leftwards continuously, so that the piston 24 pushes the sediment into the collection tank 29, water in the treatment tank 19 is pumped out through the second water pump 35, the pH value of the wastewater is detected through the pH sensor 36, if the pH value of the wastewater is within a certain set range, the second control valve 38 is opened, the third control valve 40 is closed, the wastewater enters the purification tank 42, the purified water is collected through the water outlet pipe 46 after being purified through the purification tank 42, and if the pH value of the wastewater is not within the certain set range, the second control valve 38 is closed, the third control valve 40 is opened, so that the wastewater returns to the neutralization tank 10 again for secondary neutralization.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.
Claims (8)
1. A wastewater treatment device for stainless steel casting production and a treatment method thereof comprise a sedimentation tank (1), an electromagnetic rod (5), a neutralization tank (10), a wall scraping rod (15), an internal thread rod (22), a telescopic cylinder (27), a fifth connecting pipe (31), a PH sensor (36) and a purification box (42), and are characterized in that a sewage inlet pipe (2) is installed on the left side above the sedimentation tank (1), a plurality of filter screens (3) are uniformly distributed in the sedimentation tank (1) from left to right, and a sewage discharge pipe (6) is installed below the space between two adjacent filter screens (3);
a neutralization tank (10) is installed on the right side of the sedimentation tank (1), a first connecting pipe (8) is installed on the right side above the sedimentation tank (1), a first water pump (9) is installed on the first connecting pipe (8), the right side of the first connecting pipe (8) is connected to the left side above the neutralization tank (10), a first motor (11) is installed in the middle above the neutralization tank (10), a rotating shaft (12) is installed below the first motor (11), a spiral stirring paddle (13) is installed on the rotating shaft (12), connecting rods (14) are installed on the left side and the right side of the rotating shaft (12), and a wall scraping rod (15) is installed on one side, far away from the rotating shaft (12), of each connecting rod (14);
a second connecting pipe (18) is arranged below the neutralizing tank (10), a treatment box (19) is arranged below the second connecting pipe (18), a second motor (20) is arranged on the right side of the treatment box (19), a screw rod (21) is arranged on the left side of the second motor (20), an inner threaded rod (22) is connected to the left side of the screw rod (21), a piston (24) is arranged on the left side of the inner threaded rod (22), a partition plate (26) is arranged on the left side inside the treatment box (19), and a telescopic cylinder (27) is arranged below the left side of the neutralizing tank (10);
handle right side below of case (19) and install sixth connecting pipe (34), install second water pump (35) and PH sensor (36) on sixth connecting pipe (34), the top of sixth connecting pipe (34) is connected with seventh connecting pipe (37) and eighth connecting pipe (39) respectively, install second control valve (38) on seventh connecting pipe (37), install third control valve (40) on eighth connecting pipe (39), one side that sixth connecting pipe (34) were kept away from in eighth connecting pipe (39) is connected to the right side top of neutralization tank (10), nozzle (41) are installed to the right side below of seventh connecting pipe (37), purifying box (42) are installed to the below of nozzle (41).
2. The wastewater treatment equipment and the wastewater treatment method for stainless steel casting production according to claim 1, wherein a first control valve (7) is arranged on the sewage discharge pipe (6), support rods (4) are arranged on the left side and the right side above the sewage discharge pipe (6), and electromagnetic rods (5) are arranged on the support rods (4).
3. The wastewater treatment equipment and the wastewater treatment method for stainless steel casting production according to claim 1, wherein one side of the wall scraping rod (15) far away from the connecting rod (14) is attached to the inner wall of the neutralization tank (10), an agent adding bin (16) is installed on the right side above the neutralization tank (10), and the front surface of the agent adding bin (16) is provided with scale marks (17).
4. The wastewater treatment equipment and the wastewater treatment method for the production of stainless steel castings according to claim 1, wherein a shaft sleeve (23) is installed between the piston (24) and the inner threaded rod (22), a plurality of through holes (25) are uniformly distributed on the piston (24), and the lower part of the telescopic cylinder (27) is connected with a partition plate (26).
5. A wastewater treatment facility for stainless steel casting production and a treatment method thereof according to claim 1, wherein a collection tank (29) is installed at the lower right side of the treatment tank (19), a third connection pipe (28) is installed at the left side of the collection tank (29), and the upper side of the third connection pipe (28) is connected to the lower left side of the treatment tank (19).
6. The wastewater treatment equipment and the wastewater treatment method for stainless steel casting production according to claim 1, wherein a plurality of fourth connecting pipes (33) are uniformly distributed at the bottom of the neutralization tank (10), one sides of the fourth connecting pipes (33) far away from the neutralization tank (10) are connected to a fifth connecting pipe (31), an aeration valve (32) is arranged on the fifth connecting pipe (31), and one side of the fifth connecting pipe (31) far away from the fourth connecting pipe (33) is provided with an aeration device (30).
7. The wastewater treatment equipment and the wastewater treatment method for stainless steel casting production according to claim 1, wherein a water outlet pipe (46) is installed below the purification box (42), a sandstone layer (43) is arranged inside the purification box (42), an activated carbon adsorption layer (44) is arranged below the sandstone layer (43), and a filter membrane layer (45) is arranged below the activated carbon adsorption layer (44).
8. The wastewater treatment method for the production of the stainless steel casting according to claim 1, characterized in that the wastewater is introduced into the sedimentation tank (1) through a wastewater inlet pipe (2), the electromagnetic rod (5) is electrified, the electromagnetic rod (5) adsorbs metal waste in the wastewater, the wastewater is primarily filtered through the filter screen (3), the filtered impurities are discharged through a drain pipe (6), then the electromagnetic rod (5) is powered off, so that the metal waste adsorbed on the electromagnetic rod (5) falls off, and the metal waste is discharged through the drain pipe (6) for recycling; then the wastewater in the sedimentation tank (1) is conveyed into a neutralization tank (10) through a first water pump (9), a proper amount of acid-base neutralization liquid is added into the neutralization tank (10) through an additive adding bin (16), a rotating shaft (12) is driven by a first motor (11) to drive a spiral stirring paddle (13) to rotate, the spiral stirring paddle (13) stirs the wastewater in the neutralization tank (10), meanwhile, an aeration device (30) aerates the neutralization tank (10) to increase the oxygen content in the neutralization tank (10), after the wastewater in the neutralization tank (10) is reacted with the acid-base neutralization liquid, the reacted liquid is conveyed into a treatment tank (19) through a second connecting pipe (18), a screw rod (21) is driven by a second motor (20) to rotate, the screw rod (22) in the screw rod (21) moves leftwards, an inner threaded rod (22) drives a piston (24) to move leftwards, and the piston (24) and precipitates generated by the reaction are centrally extruded, water flows to the right side of the piston (24) through the through hole (25), then the partition plate (26) is driven to move upwards through the telescopic cylinder (27), the piston (24) continues to move leftwards, the piston (24) pushes sediment into the collection box (29), then the water in the treatment tank (19) is pumped out by a second water pump (35), the PH value of the wastewater is detected by a PH sensor (36), if the PH value of the wastewater is in a certain set range, the second control valve (38) is opened, the third control valve (40) is closed, and the wastewater is introduced into the purification tank (42), after being purified by the purifying box (42), the purified water is collected by the water outlet pipe (46), if the PH value of the waste water is not in a certain set range, the second control valve (38) is closed and the third control valve (40) is opened to allow the wastewater to be returned to the neutralization tank (10) for secondary neutralization.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113651487A (en) * | 2021-10-15 | 2021-11-16 | 广州蒙太奇电器有限公司 | Heavy metal engineering wastewater grading treatment device and application method thereof |
| CN114477515A (en) * | 2021-12-16 | 2022-05-13 | 徐州沐和水处理设备有限公司 | Energy-concerving and environment-protective type waste water defluorination equipment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113651487A (en) * | 2021-10-15 | 2021-11-16 | 广州蒙太奇电器有限公司 | Heavy metal engineering wastewater grading treatment device and application method thereof |
| CN114477515A (en) * | 2021-12-16 | 2022-05-13 | 徐州沐和水处理设备有限公司 | Energy-concerving and environment-protective type waste water defluorination equipment |
| CN114477515B (en) * | 2021-12-16 | 2022-12-16 | 徐州沐和水处理设备有限公司 | Energy-concerving and environment-protective type waste water defluorination equipment |
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Application publication date: 20201002 |