CN114455769A - Process for producing manganese sulfate by using waste acid in industrial wastewater - Google Patents
Process for producing manganese sulfate by using waste acid in industrial wastewater Download PDFInfo
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- CN114455769A CN114455769A CN202210186508.XA CN202210186508A CN114455769A CN 114455769 A CN114455769 A CN 114455769A CN 202210186508 A CN202210186508 A CN 202210186508A CN 114455769 A CN114455769 A CN 114455769A
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
- B01D25/12—Filter presses, i.e. of the plate or plate and frame type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
- B01D25/28—Leaching or washing filter cakes in the filter handling the filter cake for purposes other than regenerating
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G45/00—Compounds of manganese
- C01G45/10—Sulfates
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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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
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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
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
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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
- 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
- C02F2001/5218—Crystallization
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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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- 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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention discloses a process for producing manganese sulfate by using waste acid in industrial wastewater, which belongs to the technical field of wastewater treatment, and the process for producing manganese sulfate by using waste acid in industrial wastewater comprises the following process flows: firstly, inputting pickling waste liquid in an iron and steel plant into an invasion cylinder, and then, mixing the pickling waste liquid with a solid-liquid ratio of 1: 2, slowly adding high-quality manganese ore, stirring, reacting for 4-5 hours, adding slag washing water, and adjusting solid-liquid ratio to 2: 5; after the leaching reaction is finished, filter pressing is started, filtrate is manganese sulfate purified liquid, the manganese sulfate purified liquid enters a concentration process to evaporate redundant water, manganese sulfate is crystallized, and a qualified manganese sulfate feed product is prepared through centrifugation and drying.
Description
Technical Field
The invention relates to the technical field of wastewater treatment, in particular to a process for producing manganese sulfate by using waste acid in industrial wastewater.
Background
At present, waste acid water containing a certain amount of heavy metals such as arsenic, cadmium and the like is often discharged from industrial wastewater in China, the ecological environment is seriously polluted, and normal production cannot be realized, and the production in a steel plant is realized by using an acid pickling process and easily discharging the waste acid water containing iron powder;
most of the existing methods for producing manganese sulfate feed basically adopt wet production technology, wherein a large amount of acid-containing aqueous solution is needed, which provides cheap raw materials for production enterprises, is beneficial to reducing production cost and simultaneously controls waste acid water generated in the process of producing crude indium.
In a sulfuric acid solution, reducing manganese dioxide in manganese ore into manganese monoxide by using pyrite, and reacting with sulfuric acid to generate a manganese sulfate solution; removing impurities by barium sulfide and fluoride, and evaporating and crystallizing to produce manganese sulfate for a battery; the product produced by the process contains fluorine ions, the amount of generated waste residues is large, and a large amount of filtrate is easily attached to the waste residues in the filtering process of the waste residues, so that raw materials are generated.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide a process for producing manganese sulfate by using waste acid in industrial wastewater, the scheme is that the manganese sulfate produced by using high-content manganese ore as the raw material has high additional value and produces few waste residues, filter residues in the industrial wastewater are subjected to concentrated, superposed, layered and filter-pressed, the filter-pressed process is continuously scrubbed from top to bottom, the filtrate attached to the filter residues is completely discharged, the filter residue frame at the lowest layer is detected firstly after the filter-pressed process is finished, and if the content of heavy metal in the discharged cleaning solution is qualified, the residual filtrate of the filter residues is judged to be completely separated out, so that the utilization rate of the raw material is ensured.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A process for producing manganese sulfate by using waste acid in industrial wastewater comprises the following process flows:
a1, firstly, inputting pickling waste liquid in an iron and steel plant into an intrusion cylinder, and then, mixing the pickling waste liquid with a solid-to-liquid ratio of 1: 2, slowly adding high-quality manganese ore, stirring, reacting for 4-5 hours, adding slag washing water, and adjusting solid-liquid ratio to 2: 5;
a2, after the leaching reaction is finished, filter pressing is started, and the ratio of the filter residue to the liquid residue is 1: rinsing with clean water, performing secondary filter pressing after washing, putting slag washing water serving as manganese-containing water into the next cylinder for leaching, and taking filtrate as stock solution for producing manganese sulfate to enter a next impurity removal and purification process;
a3, continuously and slowly adding barium sulfide into the manganese-containing stock solution of the arsenic-iron slag, slowly increasing the pH value of the stock solution to 5-5.4, continuously stirring for half an hour, wherein the filter residue is zinc-cadmium slag, and the filtrate is used as purified manganese sulfate stock solution to enter a preconcentration process;
a4, standing the pre-concentrated stock solution coolant for 20 hours, adding SDD solution for further removing heavy metals, adding a proper flocculating agent for filter pressing, concentrating the filtrate which is manganese sulfate purified liquid, evaporating excessive water, and centrifuging and drying manganese sulfate crystals to obtain a qualified manganese sulfate feed product.
A process for producing manganese sulfate by using waste acid in industrial wastewater comprises a filter residue post-treatment device for filter pressing, wherein the filter residue post-treatment device comprises a reaction tank, the bottom end of the reaction tank is fixedly connected with a water guide pipe, a guide pipe is connected in the water guide pipe in a sliding manner, the top end of the guide pipe is provided with an electromagnetic valve, the outer wall of the water guide pipe is fixedly connected with an electric push rod matched with the guide pipe, the bottom end of the water guide pipe is fixedly connected with a protection box, the bottom end of the protection box is fixedly connected with a liquid discharge pipe, one end of the liquid discharge pipe is fixedly connected with an electric guide rail matched with the protection box, the movable end of the electric guide rail is connected with a support rod in a sliding manner, the power output end of the support rod is fixedly connected with a sealing plate, one side of the sealing plate, which is close to the protection box, is provided with a bottom filter frame and a water guide cover, the water guide cover comprises a frame body, the frame is internally and fixedly connected with a porous plate, the protection box is fixedly connected with a pair of pressurizing devices matched with the water diversion cover, a plurality of filter pressing frames are arranged between the bottom filter frame and the water diversion cover, floating filter plates are fixedly connected in the bottom filter frame and the filter pressing frames respectively, each floating filter plate comprises a straight filter plate, a curved filter plate is fixedly connected on the straight filter plate, a plurality of uniformly distributed filter holes are formed in the straight filter plate and the curved filter plate respectively, concave iron strips are fixedly connected on the outer walls of the bottom filter frame, the water diversion cover and the filter pressing frames respectively, a limiting table matched with the bottom filter frame, the water diversion cover and the filter pressing frames is fixedly connected on the inner wall of the protection box, a water delivery pipe is connected on the limiting table, a corrugated hose is connected between the frame and the limiting table, a plurality of electromagnetic buckles matched with the concave iron strips are fixedly connected on the sealing plate, the raw materials adopt manganese sulfate produced by high-content manganese ore with high added value, the waste residue that the finished product produced is few, and carries out concentrated stack layering filter-pressing to filter residue among the industrial waste water, and continuous top-down scrubs in the filter-pressing process, guarantees that adnexed filtrating on the filter residue discharges completely, detects the filter residue frame of lower floor at last, if the washing liquid heavy metal content of discharging is qualified then judges that the filter residue filtrating is totally appeared, improves raw materials utilization ratio.
Furthermore, perpendicular spout has all been seted up to end filter frame, drainage lid and the one end that the filter-pressing frame is close to spacing platform, spacing bench fixedly connected with and perpendicular spout assorted perpendicular draw runner make drainage lid and filter-pressing frame push down the difficult dislocation that takes place of in-process.
Further, straight filter plate is made by rigid metal material, bent filter plate is made by elastic metal material, the radian when bent filter plate is not atress is 2-3rad, and bent filter plate is the convex curved surface, and the filter residue is difficult for concentrating and piling up after contacting with bent filter plate backward both sides gliding.
Furthermore, the bottom filter frame is made of the same structural material as the filter-pressing frame, and the inner diameter of the bottom filter frame is matched with the outer diameter of the filter-pressing frame at the upper end of the bottom filter frame.
Further, the process for producing manganese sulfate by using waste acid in industrial wastewater comprises a control system, wherein the control system comprises a controller installed on an electric guide rail, and the electric guide rail, the electromagnetic buckle and the pressurizing device are electrically connected with the controller.
Further, electromagnetism buckle include with closing plate fixed connection's card post, fixedly connected with and concave ironbar assorted electromagnetism iron strip on the card post, filter frame and diversion lid location and fixed before using at the bottom of making things convenient for.
Furthermore, the inner walls and the outer walls of the bottom filter frame and the pressure filter frame are polished smoothly.
A process for producing manganese sulfate by using waste acid in industrial wastewater comprises the following specific operations of performing filter pressing by using a filter residue post-treatment device in the step A2:
s1, before filter pressing operation is carried out on filter residues, a user firstly installs the bottom filter frame, the water diversion cover and the filter pressing frame on the plurality of electromagnetic buckles of the sealing plate in sequence, then discharges filtrate in the reaction tank, and when the filter residue filter pressing device is used, the filter residues obtained by filtering are firstly input into the protection box through the reaction tank through the water guide pipe;
s2, when inputting filter residue, the electromagnetic buckle on the sealing plate is butted with the water leading cover and the plurality of filter pressing frames to fix the water leading cover and the plurality of filter pressing frames with the sealing plate, at the moment, the electric guide rail works to pull out the sealing plate to enable the bottom filter frame to be independently positioned at the bottom of the protective box, at the moment, the guide pipe moves downwards under the driving of the electric push rod to enable the filter residue to enter the floating filter plate in the bottom filter frame, then the guide pipe resets, the electric guide rail drives the support rod to reset to enable the sealing plate and the protective box to be closed,
s4, disconnecting the filter pressing frame close to the bottom filter frame on the sealing plate from the limiting table, drawing out the supporting rod through the electric guide rail to stack one filter pressing frame on the bottom filter frame, and inputting filter residues into the filter pressing frame by using the guide pipe;
s5, repeating the steps for multiple times, sequentially stacking a plurality of filter pressing frames and filling filter residues, and finally disconnecting the water diversion cover after the sealing plate is reset to stack the water diversion cover on the top of the filter pressing frames;
s6, at the moment, a user can control a pair of pressurizing devices on the protection box to pressurize the water diversion cover, so that the bottom filter frame, the water diversion cover and the filter pressing frame are mutually extruded, filter pressing of filter residues in the bottom filter frame and the filter pressing frame is realized, clear water is discontinuously input into the water diversion cover by the limiting table in the filter pressing process, the filter residues are washed, and filtrate is discharged through a liquid discharge pipe;
s7, after the filter pressing work is finished, the bottom filter frame and the plurality of filter pressing frames are kept still for half an hour, then the electric guide rail is controlled to pull out the supporting rod, and technicians can disassemble the bottom filter frame and the filter pressing frames to carry out filter residue recovery and then detect.
Further, the interval of rinsing with clean water in the step S6 is 5-10 min.
Further, the filter frame with the bottom is reloaded for secondary filter pressing when the heavy metal content in the filter residue detection in the S7 does not reach the standard.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) the manganese sulfate that this scheme raw materials adopted high content manganese ore production added value is high, and the waste residue that the finished product produced is few, and to carrying out concentrated stack layering filter-pressing to filter residue among the industrial waste water, the continuous top-down of filter-pressing in-process is scrubbed, guarantees that adnexed filtrating discharges completely on the filter residue, detects the filter residue frame of lower floor earlier after the filter-pressing process, if the qualified filter residue filtrating of discharge washing liquid heavy metal content is judged the filter residue and is appeared completely, guarantees the utilization ratio of raw materials.
(2) The straight filter plate is made of rigid metal materials, the bent filter plate is made of elastic metal materials, the radian of the bent filter plate is 2-3rad when the bent filter plate is not stressed, the bent filter plate is a convex curved surface and slides downwards to two sides after filter residues are in contact with the bent filter plate, and the filter residues are not easy to concentrate and accumulate.
(3) The bottom filter frame is made of the same structural material as the filter-pressing frame, the inner diameter of the bottom filter frame is matched with the outer diameter of the filter-pressing frame at the upper end of the bottom filter frame, the vertical sliding grooves are formed in the ends, close to the limiting table, of the bottom filter frame, the water diversion cover and the filter-pressing frame, the vertical sliding strips are fixedly connected to the limiting table and matched with the vertical sliding grooves, and therefore the water diversion cover and the filter-pressing frame are not prone to dislocation in the pressing process.
(4) The electromagnetism buckle includes the card post with closing plate fixed connection, fixedly connected with and concave iron bar assorted electromagnetism iron strip on the card post, and filter frame and diversion lid location before using are fixed with fixed at the bottom of making things convenient for.
Drawings
FIG. 1 is a flow chart of the present invention;
FIG. 2 is a perspective view of the residue post-treatment apparatus of the present invention;
FIG. 3 is a perspective view showing a state where the sealing plate of the present invention is drawn out;
FIG. 4 is a cross-sectional view of the present invention;
FIG. 5 is a schematic view of the structure at A in FIG. 4;
FIG. 6 is a schematic view of the structure at B in FIG. 4;
fig. 7 is a side view of the present invention.
The reference numbers in the figures illustrate:
the device comprises a reaction tank 1, a water guide pipe 2, a guide pipe 4, a liquid discharge pipe 5, an electric guide rail 5, a sealing plate 6, a support rod 7, a bottom filter frame 8, a water guide cover 9, a frame 901, a permeable plate 902, a filter pressing frame 10, a straight filter plate 1001, a bent filter plate 1002, a floating filter plate 11, a concave iron bar 12, an electromagnetic buckle 13 and a limit table 14.
Detailed Description
In this embodiment 1, the technical solution will be clearly and completely described in conjunction with the disclosed drawings, so that the purpose, technical solution and beneficial effects of the embodiments of the present disclosure will be more clear. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without any inventive step, are within the scope of protection of the disclosure.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" and similar words are intended to mean that the elements or items listed before the word cover the elements or items listed after the word and their equivalents, without excluding other elements or items. "upper", "lower", "inside", "outside", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
Example (b):
referring to fig. 1, a process for producing manganese sulfate by using waste acid in industrial wastewater comprises the following steps:
a1, firstly, inputting the pickling waste liquid in the steel plant into an invasion cylinder (in the scheme, the pickling waste liquid in the steel plant is used, iron powder does not need to be added additionally because the pickling waste liquid contains iron rust as a reducing agent, and the scheme can also save the use of other reducing agents), and then, mixing the pickling waste liquid with the pickling waste liquid in the steel plant in a solid-to-liquid ratio of 1: 2, slowly adding high-quality manganese ore, stirring (the generation amount of waste residues can be reduced by using the high-quality manganese ore), stirring and reacting for 4-5 hours, and adding slag washing water to adjust solid and liquid to 2: 5;
a2, after the leaching reaction is finished, filter pressing is started, and the ratio of the filter residue to the liquid residue is 1: rinsing with clean water, performing secondary filter pressing after washing, putting slag washing water serving as manganese-containing water into the next cylinder for leaching, and taking filtrate as stock solution for producing manganese sulfate to enter a next impurity removal and purification process;
a3, continuously and slowly adding barium sulfide into the manganese-containing stock solution of the arsenic-iron slag, slowly increasing the pH value of the stock solution to 5-5.4, continuously stirring for half an hour, wherein the filter residue is zinc-cadmium slag, and the filtrate is used as purified manganese sulfate stock solution to enter a preconcentration process;
a4, standing the pre-concentrated stock solution coolant for 20 hours, adding SDD solution for further removing heavy metals, adding a proper flocculating agent for filter pressing, concentrating the filtrate which is manganese sulfate purified liquid, evaporating excessive water, and centrifuging and drying manganese sulfate crystals to obtain a qualified manganese sulfate feed product.
Referring to fig. 2-4, a process for producing manganese sulfate by using waste acid in industrial wastewater comprises a filter residue post-treatment device for filter pressing, wherein the filter residue post-treatment device comprises a reaction tank 1, a water guide pipe 2 is fixedly connected to the bottom end of the reaction tank 1, a guide pipe 201 is slidably connected in the water guide pipe 2, an electromagnetic valve is installed at the top end of the guide pipe 201, an electric push rod matched with the guide pipe 201 is fixedly connected to the outer wall of the water guide pipe 2, a protection box 3 is fixedly connected to the bottom end of the water guide pipe 2, a drain pipe 4 is fixedly connected to the bottom end of the protection box 3, a drain hole matched with the drain pipe 4 is formed in the bottom end of the protection box 3, an electric guide rail 5 matched with the protection box 3 is fixedly connected to one end of the drain pipe 4, a support rod 7 is slidably connected to the movable end of the electric guide rail 5,
referring to fig. 4-7, a sealing plate 6 is fixedly connected to the power output end of the support rod 7, a bottom filter frame 8 and a water diversion cover 9 are arranged on one side of the sealing plate 6 close to the protection box 3, the water diversion cover 9 includes a frame 901, a water permeable plate 902 is fixedly connected in the frame 901, a pair of pressurizing devices 15 matched with the water diversion cover 9 are fixedly connected to the protection box 3, a plurality of filter press frames 10 are arranged between the bottom filter frame 8 and the water diversion cover 9, vertical sliding chutes are arranged at one ends of the bottom filter frame 8, the water diversion cover 9 and the filter press frames 10 close to a limit platform 14, vertical sliding strips matched with the vertical sliding chutes are fixedly connected to the limit platform 14, so that the water diversion cover 9 and the filter press frames 10 are not easy to be misplaced in the process of pressing down, the bottom filter frame 8 and the filter press frames 10 are made of the same structural material, the inner diameter of the bottom filter frame 8 is matched with the outer diameter of the filter press frame 10, the coverage range of the drain hole is smaller than the inner diameter of the bottom filter frame 8, the inner wall and the outer wall of the bottom filter frame 8 and the outer wall of the filter pressing frame 10 are both polished smoothly.
Referring to fig. 5, floating filter plates 11 are fixedly connected in a bottom filter frame 8 and a filter press frame 10, each floating filter plate 11 comprises a straight filter plate 1001, a curved filter plate 1002 is fixedly connected to the straight filter plate 1001, a plurality of uniformly distributed filter holes are formed in the straight filter plate 1001 and the curved filter plate 1002, the straight filter plate 1001 is made of a rigid metal material, the curved filter plate 1002 is made of an elastic metal material, the radian of the curved filter plate 1002 when the curved filter plate 1002 is not stressed is 2-3rad, the curved filter plate 1002 is a convex curved surface, and the filter residues slide down to two sides after contacting the curved filter plate 1002, so that the filter residues are not easy to concentrate and accumulate.
Please refer to fig. 6, a concave iron bar 12 is fixedly connected to the outer walls of the bottom filter frame 8, the water diversion cover 9 and the filter pressing frame 10, a limiting table 14 is fixedly connected to the inner wall of the protection box 3 and matched with the bottom filter frame 8, the water diversion cover 9 and the filter pressing frame 10, a water pipe is connected to the limiting table 14, a corrugated hose is connected between the frame body 901 and the limiting table 14, a plurality of electromagnetic buckles 13 matched with the concave iron bar 12 are fixedly connected to the sealing plate 6, each electromagnetic buckle 13 comprises a clamping column fixedly connected with the sealing plate 6, each clamping column is fixedly connected with an electromagnetic bar matched with the concave iron bar 12, and the bottom filter frame 8 and the water diversion cover 9 are conveniently positioned and fixed before use.
The process for producing the manganese sulfate by using the waste acid in the industrial wastewater comprises a control system, wherein the control system comprises a controller arranged on an electric guide rail 5, and the electric guide rail 5, an electromagnetic buckle 13 and a pressurizing device 15 are all electrically connected with the controller.
A process for producing manganese sulfate by using waste acid in industrial wastewater, wherein the specific operation of performing filter pressing by using a filter residue post-treatment device in the step A2 is as follows:
s1, before filter pressing operation is carried out on filter residues, a user firstly installs the bottom filter frame 8, the water diversion cover 9 and the filter pressing frame 10 on the plurality of electromagnetic buckles 13 of the sealing plate 6 in sequence, then discharges filtrate in the reaction tank 1, and when the filter residue filter pressing device is used, filter residues obtained through filtering are firstly input into the protection box 3 through the reaction tank 1 through the water guide pipe 2;
s2, when filter residues are input, the electromagnetic buckle 13 on the sealing plate 6 is in butt joint with the water diversion cover 9 and the plurality of filter pressing frames 10, the water diversion cover 9 and the plurality of filter pressing frames 10 are fixed with the sealing plate 6, at the moment, the electric guide rail 5 works to pull out the sealing plate 6, the bottom filter frame 8 is independently positioned at the bottom of the protection box 3, at the moment, the guide pipe 201 moves downwards under the driving of the electric push rod, the filter residues enter the floating filter plates 11 in the bottom filter frame 8, then the guide pipe 201 resets, the electric guide rail 5 drives the support rod 7 to reset, the sealing plate 6 is closed with the protection box 3,
s4, disconnecting the filter pressing frame 10 close to the bottom filter frame 8 on the sealing plate 6 from the limiting table 14, drawing out the supporting rod 7 through the electric guide rail 5, stacking one filter pressing frame 10 on the bottom filter frame 8, and inputting filter residues into the filter pressing frame 10 by using the guide pipe 201;
s5, repeating the steps for multiple times, sequentially stacking a plurality of filter pressing frames 10 and filling filter residues, and finally disconnecting the water diversion cover 9 after the sealing plate 6 is reset to stack the water diversion cover 9 on the top of the filter pressing frames 10;
s6, at the moment, a user can control a pair of pressurizing devices 15 on the protection box 3 to pressurize the water diversion cover 9, so that the bottom filter frame 8, the water diversion cover 9 and the filter pressing frame 10 are mutually squeezed, filter pressing of filter residues in the bottom filter frame 8 and the filter pressing frame 10 is realized, clear water is discontinuously input into the water diversion cover 9 by the limiting table 14 in the filter pressing process, the clear water washing interval is 5-10min, the filter residues are washed, and filtrate is discharged through the liquid discharge pipe 4;
s7, after the filter pressing work is finished, the filter frame 8 and the plurality of filter pressing frames are kept stand for half an hour, then the electric guide rail 5 is controlled to pull out the support rod 7, the technician can disassemble the filter frame 8 and the filter pressing frames 10 to detect after filter residue recovery, and the filter frame 8 is re-assembled by the person with the heavy metal content not reaching the standard to perform filter pressing again.
The manganese sulfate produced by adopting high-content manganese ore as raw materials has high added value, the finished product produces less waste residues, filter residues in industrial wastewater are subjected to concentrated superposition and layered filter pressing, the filter pressing process is continuously scrubbed from top to bottom, the filtrate attached to the filter residues is completely discharged, and technicians can select and install filter pressing frames 10 with different levels and sizes for use according to the production amount of the waste residues
The filter-pressing process of this scheme detects the filter residue frame of lower floor earlier after finishing, if the qualified filter residue of judging filter residue of the washing liquid heavy metal content of discharge is appeared completely, guarantees utilization ratio of raw materials.
The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.
Claims (11)
1. A process for producing manganese sulfate by using waste acid in industrial wastewater is characterized in that: the process flow comprises the following steps:
a1, firstly, inputting pickling waste liquid in an iron and steel plant into an intrusion cylinder, and then, mixing the pickling waste liquid with a solid-to-liquid ratio of 1: 2, slowly adding high-quality manganese ore, stirring, reacting for 4-5 hours, adding slag washing water, and adjusting solid-liquid ratio to 2: 5;
a2, after the leaching reaction is finished, filter pressing is started, and the ratio of the filter residue to the liquid residue is 1: rinsing with clean water, performing secondary filter pressing after washing, putting slag washing water serving as manganese-containing water into the next cylinder for leaching, and taking filtrate as stock solution for producing manganese sulfate to enter a next impurity removal and purification process;
a3, continuously and slowly adding barium sulfide into the manganese-containing stock solution of the arsenic-iron slag, slowly increasing the pH value of the stock solution to 5-5.4, continuously stirring for half an hour, wherein the filter residue is zinc-cadmium slag, and the filtrate is used as purified manganese sulfate stock solution to enter a preconcentration process;
a4, standing the pre-concentrated stock solution coolant for 20 hours, adding SDD solution for further removing heavy metals, adding a proper flocculating agent for filter pressing, concentrating the filtrate which is manganese sulfate purified liquid, evaporating excessive water, and centrifuging and drying manganese sulfate crystals to obtain a qualified manganese sulfate feed product.
2. The process for producing manganese sulfate by using waste acid in industrial wastewater comprises a filter residue post-treatment device for filter pressing, and is characterized in that: the filter residue post-treatment device comprises a reaction tank (1), a water guide pipe (2) is fixedly connected to the bottom end of the reaction tank (1), a guide pipe (201) is connected in the water guide pipe (2) in a sliding manner, an electromagnetic valve is installed at the top end of the guide pipe (201), an electric push rod matched with the guide pipe (201) is fixedly connected to the outer wall of the water guide pipe (2), a protection box (3) is fixedly connected to the bottom end of the water guide pipe (2), a liquid discharge pipe (4) is fixedly connected to the bottom end of the protection box (3), an electric guide rail (5) matched with the protection box (3) is fixedly connected to one end of the liquid discharge pipe (4), a support rod (7) is slidably connected to the movable end of the electric guide rail (5), a sealing plate (6) is fixedly connected to the power output end of the support rod (7), a bottom filter frame (8) and a water guide cover (9) are arranged on one side, close to the protection box (3), of the sealing plate (6), draw water lid (9) including framework (901), fixedly connected with porous disk (902) in framework (901), fixedly connected with a pair of and draw water lid (9) assorted pressure device (15) on guard box (3), be equipped with a plurality of filter-pressing frames (10) between end filter frame (8) and draw water lid (9), equal fixedly connected with filter plate (11) that floats in end filter frame (8) and filter-pressing frame (10), filter plate (11) that floats are including straight filter plate (1001), the bent filter plate (1002) of fixedly connected with on straight filter plate (1001), all set up a plurality of evenly distributed's drainage hole on straight filter plate (1001) and bent filter plate (1002), equal fixedly connected with concave ironbar (12) on the outer wall of end filter frame (8), draw water lid (9) and filter-pressing frame (10), fixedly connected with and end filter frame (8) on the inner wall of guard box (3), The filter pressing device is characterized by comprising a limiting table (14) matched with the water diversion cover (9) and the filter pressing frame (10), a water delivery pipe is connected onto the limiting table (14), a corrugated hose is connected between the frame body (901) and the limiting table (14), and a plurality of electromagnetic buckles (13) matched with the concave iron bars (12) are fixedly connected onto the sealing plate (6).
3. The process for producing manganese sulfate by using waste acid in industrial wastewater as claimed in claim 2, wherein the process comprises the following steps: perpendicular spout has all been seted up to end filter frame (8), diversion lid (9) and filter-pressing frame (10) one end that is close to spacing platform (14), fixedly connected with and perpendicular spout assorted perpendicular draw runner on spacing platform (14).
4. The process for producing manganese sulfate by using waste acid in industrial wastewater as claimed in claim 2, wherein the process comprises the following steps: the straight filter plate (1001) is made of rigid metal materials, the bent filter plate (1002) is made of elastic metal materials, and the radian of the bent filter plate (1002) is 2-3rad when the bent filter plate is not stressed.
5. The process for producing manganese sulfate by using waste acid in industrial wastewater as claimed in claim 2, wherein the process comprises the following steps: the bottom filter frame (8) is made of the same structural material as the filter press frame (10), and the inner diameter of the bottom filter frame (8) is matched with the outer diameter of the filter press frame (10) at the upper end of the bottom filter frame.
6. The process for producing manganese sulfate by using waste acid in industrial wastewater as claimed in claim 2, which is characterized in that: the control system comprises a controller installed on an electric guide rail (5), and the electric guide rail (5), an electromagnetic buckle (13) and a pressurizing device (15) are all electrically connected with the controller.
7. The process for producing manganese sulfate by using waste acid in industrial wastewater as claimed in claim 2, wherein the process comprises the following steps: electromagnetism buckle (13) including with closing plate (6) fixed connection's card post, fixedly connected with and concave iron strip (12) assorted electromagnetism iron strip on the card post.
8. The process for producing manganese sulfate by using waste acid in industrial wastewater as claimed in claim 2, wherein the process comprises the following steps: the inner walls and the outer walls of the bottom filter frame (8) and the pressure filter frame (10) are polished smoothly.
9. The process for producing manganese sulfate by using waste acid in industrial wastewater as claimed in claim 2, which is characterized in that: the use method of the filter residue post-treatment device comprises the following steps:
s1, before filter pressing operation is carried out on filter residues, a user firstly installs the bottom filter frame (8), the water diversion cover (9) and the filter pressing frame (10) on the plurality of electromagnetic buckles (13) of the sealing plate (6) in sequence, then discharges filtrate in the reaction tank (1), and when the filter residue filter pressing device is used, firstly, filter residues obtained through filtering are input into the protection box (3) through the water guide pipe (2) through the reaction tank (1);
s2, when filter residues are input, the electromagnetic buckle (13) on the sealing plate (6) is butted with the water diversion cover (9) and the plurality of filter pressing frames (10), so that the water diversion cover (9) and the plurality of filter pressing frames (10) are fixed with the sealing plate (6), at the moment, the electric guide rail (5) works to pull out the sealing plate (6), so that the bottom filter frame (8) is independently positioned at the bottom of the protective box (3), at the moment, the guide pipe (201) moves downwards under the driving of the electric push rod, so that the filter residues enter the floating filter plate (11) in the bottom filter frame (8), then the guide pipe (201) resets, the electric guide rail (5) drives the support rod (7) to reset, so that the sealing plate (6) and the protective box (3) are closed,
s4, disconnecting a filter pressing frame (10) close to a bottom filter frame (8) on a sealing plate (6) from a limiting table (14), drawing out a supporting rod (7) through an electric guide rail (5), stacking one filter pressing frame (10) on the bottom filter frame (8), and inputting filter residues into the filter pressing frame (10) through a guide pipe (201);
s5, repeating the steps for multiple times, sequentially stacking a plurality of filter-pressing frames (10) and filling filter residues, and finally disconnecting the water diversion cover (9) after the sealing plate (6) is reset to stack the water diversion cover (9) on the top of the filter-pressing frames (10);
s6, at the moment, a user can control a pair of pressurizing devices (15) on the protection box (3) to pressurize the water diversion cover (9), so that the bottom filter frame (8), the water diversion cover (9) and the filter pressing frame (10) are mutually squeezed, filter pressing of filter residues in the bottom filter frame (8) and the filter pressing frame (10) is realized, clear water is discontinuously input into the water diversion cover (9) by a limiting table (14) in the filter pressing process, the filter residues are washed, and filtrate is discharged through a liquid discharge pipe (4);
s7, after the filter pressing work is finished, the bottom filter frame (8) and the plurality of filter pressing frames (10) are kept still for half an hour, then the electric guide rail (5) is controlled to pull out the supporting rod (7), and technicians can disassemble the bottom filter frame (8) and the filter pressing frames (10) to carry out filter residue recovery and then detection.
10. The process for producing manganese sulfate by using waste acid in industrial wastewater as claimed in claim 8, wherein the process comprises the following steps: and the interval of rinsing in the step S6 is 5-10 min.
11. The process for producing manganese sulfate by using waste acid in industrial wastewater as claimed in claim 8, wherein the process comprises the following steps: and (5) reloading the bottom filter frame (8) for the filter residue in the S7 if the heavy metal content does not reach the standard, and performing filter pressing again.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210186508.XA CN114455769B (en) | 2022-02-28 | 2022-02-28 | Process for producing manganese sulfate by using waste acid in industrial wastewater |
| ZA2022/11878A ZA202211878B (en) | 2022-02-28 | 2022-11-01 | A process for creating manganese sulfate from waste acid in industrial waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210186508.XA CN114455769B (en) | 2022-02-28 | 2022-02-28 | Process for producing manganese sulfate by using waste acid in industrial wastewater |
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| CN114455769A true CN114455769A (en) | 2022-05-10 |
| CN114455769B CN114455769B (en) | 2022-10-28 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009058166A1 (en) * | 2009-12-15 | 2011-06-16 | Fabritius, Hans J. | Piston press Filter press for separating thick / thin |
| CN203220793U (en) * | 2013-04-25 | 2013-10-02 | 浙江大为药业有限公司 | Vertical filter press |
| CN103613141A (en) * | 2013-12-12 | 2014-03-05 | 徐万铭 | Method for co-production of feed manganese sulfate by using wastewater of crude indium production |
| CN211170387U (en) * | 2019-10-11 | 2020-08-04 | 杨晓霞 | Sludge press filtration device for sewage treatment |
| CN214551433U (en) * | 2020-10-30 | 2021-11-02 | 青岛水大夫环保有限公司 | Novel filter press |
-
2022
- 2022-02-28 CN CN202210186508.XA patent/CN114455769B/en active Active
- 2022-11-01 ZA ZA2022/11878A patent/ZA202211878B/en unknown
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009058166A1 (en) * | 2009-12-15 | 2011-06-16 | Fabritius, Hans J. | Piston press Filter press for separating thick / thin |
| CN203220793U (en) * | 2013-04-25 | 2013-10-02 | 浙江大为药业有限公司 | Vertical filter press |
| CN103613141A (en) * | 2013-12-12 | 2014-03-05 | 徐万铭 | Method for co-production of feed manganese sulfate by using wastewater of crude indium production |
| CN211170387U (en) * | 2019-10-11 | 2020-08-04 | 杨晓霞 | Sludge press filtration device for sewage treatment |
| CN214551433U (en) * | 2020-10-30 | 2021-11-02 | 青岛水大夫环保有限公司 | Novel filter press |
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| Publication number | Publication date |
|---|---|
| ZA202211878B (en) | 2022-12-21 |
| CN114455769B (en) | 2022-10-28 |
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