CN209797710U - Device for strengthening treatment of metallurgical thallium-containing wastewater - Google Patents
Device for strengthening treatment of metallurgical thallium-containing wastewater Download PDFInfo
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- CN209797710U CN209797710U CN201920418083.4U CN201920418083U CN209797710U CN 209797710 U CN209797710 U CN 209797710U CN 201920418083 U CN201920418083 U CN 201920418083U CN 209797710 U CN209797710 U CN 209797710U
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Abstract
the utility model relates to a device for strengthening treatment of metallurgical thallium-containing wastewater, belonging to the technical field of environmental protection; the pretreatment adjusting tank, the strong alkali treatment tank, the thallium removal reaction tank, the deep thallium removal reaction tank, the flocculation sedimentation tank and the filter press are sequentially communicated with each other through a pump and a pipeline, the pretreatment adjusting tank is connected with the lime milk preparation tank through the pump and the pipeline, the strong alkali treatment tank is connected with the strong alkali solvent preparation tank through the pump and the pipeline, the thallium removal reaction tank is connected with the thallium removal agent preparation tank through the pump and the pipeline, the deep thallium removal reaction tank is connected with the biological deep thallium removal agent preparation tank through the pump and the pipeline, and the flocculation sedimentation tank is connected with the flocculant preparation tank through the pump and the pipeline; the utility model discloses the operation is stable, technology is succinct, the practicality is strong, it is convenient to maintain to the quantity of accessible adjustment medicament handles the metallurgical thallium-containing waste water of different contents, and through the even filling device of installation, makes the solution of adding evenly react for reaction rate promotes whole efficiency.
Description
Technical Field
The utility model relates to a device for strengthening treatment of metallurgical thallium-containing wastewater, which belongs to the technical field of environmental protection.
Background
Thallium is an associated element, is hardly independently mineralized, mostly exists in sulfur ores of metals such as lead, zinc, iron, tin, copper and the like in a dispersed state as isomorphous impurities, and is often recovered and extracted as a by-product of metal smelting. Thallium is a heavy metal with extremely strong toxicity, and the harm of thallium is far greater than Hg, Cr and Cd, and is equivalent to As. The thallium-containing sewage mainly comes from the mining, selecting and smelting process of lead-zinc ores, and trace thallium elements stored in the lead-zinc raw ores are enriched.
Thallium generally exists stably in the natural water body in the form of Tl + and compounds thereof, is difficult to settle naturally, and because the safety threshold value of thallium pollution caused by soil, water body, human and animal chronic poisoning and the like is very low, the limit value of thallium concentration in the emission standard of thallium pollutant in industrial wastewater is 0.002mg/L, which brings great difficulty to the standard control of thallium-containing sewage. At present, the process method for treating metallurgical thallium-containing heavy metal wastewater is mainly carried out as follows: (1) exchange adsorption separation; (2) salt precipitation; (3) oxidation coagulation sedimentation method, etc. Each method has advantages and disadvantages, and has the preparation matched with the process characteristics, but the whole method has the problems of unstable operation and difficult maintenance.
SUMMERY OF THE UTILITY MODEL
In order to overcome the problem that exists among the background art, the utility model discloses the operation is stable, the technology is succinct, the practicality is strong, it is convenient to maintain to the quantity of accessible adjustment medicament handles the metallurgical thallium-containing waste water of different contents, and through the even filling device of installation, makes the even reaction of solution of adding for reaction rate promotes overall efficiency.
In order to overcome the problem that exists among the background art, for solving above-mentioned problem, the utility model discloses a following technical scheme realizes:
the device for strengthening treatment of the metallurgical thallium-containing wastewater comprises a pretreatment regulating tank, a strong alkaline treatment tank, a thallium removal reaction tank, a deep thallium removal reaction tank, a flocculation sedimentation tank, a filter press and an even filling device, wherein the pretreatment regulating tank, the strong alkaline treatment tank, the thallium removal reaction tank, the deep thallium removal reaction tank and the flocculation sedimentation tank are all internally provided with the even filling device through brackets, the pretreatment regulating tank, the strong alkaline treatment tank, the thallium removal reaction tank and the deep thallium removal reaction tank are respectively connected with the even filling device in the strong alkaline treatment tank, the thallium removal reaction tank, the deep thallium removal reaction tank and the flocculation sedimentation tank through pipelines, and the even filling devices in the pretreatment regulating tank, the strong alkaline treatment tank, the thallium removal reaction tank, the deep thallium removal reaction tank and the flocculation sedimentation tank are respectively connected with a lime milk preparation tank, a strong alkaline solvent preparation tank, a thallium removal agent preparation tank through pipelines, The biological deep thallium removal agent preparation tank and the flocculating agent preparation tank are connected, and pumps are arranged on the pipelines.
Preferably, the flocculation sedimentation tank is connected with a filter press through a pump and a pipeline.
Preferably, even filling device includes ring pipe, feed liquor three way connection, goes out liquid three way connection, drain pipe, evenly be provided with feed liquor three way connection and play liquid three way connection on the ring pipe, and feed liquor three way connection is connected with the pipeline, goes out liquid three way connection and is connected with the drain pipe.
preferably, the drain pipes of the uniform filling devices in the pretreatment regulating tank, the strong alkaline treatment tank, the thallium removal reaction tank, the deep thallium removal reaction tank and the flocculation sedimentation tank extend to the bottom of the tank.
The utility model has the advantages that:
The utility model discloses the operation is stable, technology is succinct, the practicality is strong, it is convenient to maintain to the quantity of accessible adjustment medicament handles the metallurgical thallium-containing waste water of different contents, and through the even filling device of installation, makes the solution of adding evenly react for reaction rate promotes whole efficiency.
drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged schematic view of the pretreatment adjusting tank of the present invention;
FIG. 3 is a sectional view of the part A-A of the present invention;
FIG. 4 is a sectional view of the portion B-B of the present invention;
Fig. 5 is a flow chart of the present invention.
Reference numbers in the figures: 1-pretreatment adjusting tank, 2-strong alkaline treatment tank, 3-thallium removal reaction tank, 4-deep thallium removal reaction tank, 5-flocculation sedimentation tank, 6-filter press, 7-lime milk preparation tank, 8-strong alkaline solvent preparation tank, 9-thallium removal agent preparation tank, 10-biological deep thallium removal agent preparation tank, 11-flocculant preparation tank, 12-pipeline, 13-pump, 14-annular pipe, 15-liquid inlet tee joint, 16-liquid outlet tee joint, 17-support and 18-liquid outlet pipe.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the following will explain in detail a preferred embodiment of the present invention with reference to the accompanying drawings to facilitate understanding of the skilled person.
As shown in figures 1-5, the embodiment provides a device for strengthening treatment of metallurgical thallium-containing wastewater, which comprises a pretreatment adjusting tank 1, a strong alkaline treatment tank 2, a thallium removal reaction tank 3, a deep thallium removal reaction tank 4, a flocculation sedimentation tank 5, a filter press 6 and a uniform filling device, wherein the pretreatment adjusting tank 1, the strong alkaline treatment tank 2, the thallium removal reaction tank 3, the deep thallium removal reaction tank 4 and the flocculation sedimentation tank 5 are all internally provided with the uniform filling device through a bracket 17, the pretreatment adjusting tank 1, the strong alkaline treatment tank 2, the thallium removal reaction tank 3 and the deep thallium removal reaction tank 4 are respectively connected with the uniform filling devices in the strong alkaline treatment tank 2, the thallium removal reaction tank 3, the deep thallium removal reaction tank 4 and the flocculation sedimentation tank 5 through pipelines 12, and the pretreatment adjusting tank 1, the strong alkaline treatment tank 2 and the thallium removal reaction tank 3 are respectively connected with the uniform filling devices in the strong alkaline treatment tank 2, the thallium removal reaction tank 3, the deep thallium removal reaction tank, The uniform filling devices in the deep thallium removal reaction tank 4 and the flocculation sedimentation tank 5 are respectively connected with a lime milk preparation tank 7, a strong alkaline solvent preparation tank 8, a thallium removal agent preparation tank 9, a biological deep thallium removal agent preparation tank 10 and a flocculant preparation tank 11 through pipelines 12, and pumps 13 are respectively arranged on the pipelines 12.
The uniform filling device comprises a ring pipe 14, a liquid inlet three-way joint 15, a liquid outlet three-way joint 16 and a liquid outlet pipe 18, wherein the ring pipe 14 can be made of a plurality of arc pipes, the ring pipes 14 are connected into a circular structure through the liquid inlet three-way joint 15 and the liquid outlet three-way joint 16 which are uniformly arranged, the uniform filling device is arranged at the top of the inner wall of a corresponding reaction tank through a support 17, the liquid inlet three-way joint 15 is provided with two liquid inlet three-way joints, one liquid inlet three-way joint is used for connecting adjacent reaction tanks, the other liquid inlet three-way joint is used for adding a solution in a preparation groove for required reaction, the liquid outlet three-way joint 16 is provided with at least four liquid outlet three-way joints, the four liquid outlet three-way joints 16 are symmetrically arranged along the corresponding reaction tanks, so that the liquid can be uniformly fed to the front, the liquid outlet pipes 18 on the uniform filling devices in the strongly alkaline treatment tank 2, the thallium removal reaction tank 3, the deep thallium removal reaction tank 4 and the flocculation sedimentation tank 5 extend to the bottom of the tank, so that the solution is ensured to be added below the liquid level, and the reaction speed is accelerated.
The pretreatment agent used in this example was a lime cream preparation, and the strongly basic solvent was NaOH or Ca (OH) prepared2The solution comprises a thallium removal agent, a biological deep thallium removal agent and a flocculating agent, wherein the thallium removal agent is one or more of ferrous sulfate, ferric sulfate, polymeric ferric chloride and polymeric ferric polysulfate, the flocculating agent is one or more of polyacrylamide, polymeric ferric sulfate, polymeric aluminum chloride and polymeric ferric aluminum sulfate.
The metallurgical thallium-containing wastewater firstly enters a pretreatment adjusting tank 1, lime milk is added to carry out homogenizing and uniform adjustment on the metallurgical thallium-containing wastewater, the pH value of the metallurgical wastewater is stabilized between pH8 and pH9, a strong alkaline treatment tank 2 is added through a pump, and prepared NaOH or Ca (OH) is added2The solution is subjected to an intensive treatment to ensure that the pH value of the metallurgical thallium-containing wastewater is stabilized between pH10 and pH 11. The thallium-containing metallurgical wastewater subjected to enhanced treatment in the strong alkaline treatment tank 2 enters a thallium removal reaction tank 3 through a pump 13 and a pipeline 12, a chemical thallium removal agent is added according to the mass ratio of the chemical thallium removal agent to thallium of 0.5-1.2: 1, and the mixture is stirred and reacted for 30-60 min; separating thallium ions from the metallurgical thallium-containing wastewater. For metallurgy ofHeavy metal thallium in the wastewater can be removed more thoroughly; the thallium-containing metallurgical wastewater treated by the thallium removal reaction tank 3 enters the deep thallium removal reaction tank 4 through a pump 13 and a pipeline 12, a biological thallium removal agent is added, stirring and reaction are carried out for 15-30 min, and the mass-volume ratio of the biological thallium removal agent to the solution is 50-200 g/m3. The thallium-containing metallurgical wastewater subjected to deep thallium removal reaction treatment enters a flocculation sedimentation tank through a pump 13 and a pipeline 12 and is added with 5-30 g/m3The flocculating agent is stirred to react for 10-20 min and reacts with the flocculating agent, and thallium in the metallurgical wastewater forms fine precipitates to be adsorbed; and (3) carrying out filter pressing on the metallurgical thallium-containing wastewater treated by the flocculation sedimentation tank by a filter press 6 to obtain filtrate, returning the obtained filtrate to a production system for recycling, and safely treating filter residues.
The specific implementation process of the device is as follows: the metallurgical thallium-containing wastewater firstly enters a pretreatment adjusting tank 1 to carry out homogeneous and uniform adjustment on the metallurgical thallium-containing wastewater and stabilize the pH value of the metallurgical wastewater between pH8 and pH 9; the metallurgical thallium-containing wastewater treated by the pretreatment adjusting tank 1 enters a strongly alkaline treatment tank 2, and prepared NaOH or Ca (OH) is used in the strongly alkaline treatment tank 22The solution is subjected to strengthening treatment to ensure that the pH value of the metallurgical thallium-containing wastewater is stabilized between the pH value of 10 and the pH value of 11 and ensure that the next thallium removal reaction can be completed quickly; the metallurgical thallium-containing wastewater subjected to the strengthening treatment by the strong alkaline treatment tank 2 enters a thallium-removing reaction tank 3 to react with a thallium-removing agent, so that thallium ions in the metallurgical thallium-containing wastewater are separated from the wastewater. In order to thoroughly remove heavy metal thallium in the metallurgical wastewater; the metallurgical thallium-containing wastewater treated by the thallium removal reaction tank 3 enters the deep thallium removal reaction tank 4 to react with the biological deep thallium removal agent so as to separate thallium in the metallurgical wastewater more thoroughly from the wastewater. The metallurgical thallium-containing wastewater subjected to the deep thallium removal reaction enters a flocculation sedimentation tank to react with a flocculating agent, and thallium in the metallurgical wastewater forms fine precipitates to be adsorbed; and (3) carrying out filter pressing on the metallurgical thallium-containing wastewater treated by the flocculation sedimentation tank by a filter press 6 to obtain filtrate, returning the obtained filtrate to a production system for recycling, and safely treating filter residues.
Example 1:
1.5mg/L thallium-containing metallurgical wastewater enters a pretreatment regulating tank 1, lime milk is added to carry out homogenization and uniform quantity regulation on the metallurgical thallium-containing wastewater, and the metallurgical wastewater is treatedthe pH value is stabilized at pH8.3, and the prepared NaOH solution is added into the strongly alkaline treatment tank 2 through a pump for strengthening treatment to ensure that the pH value of the metallurgical thallium-containing wastewater is stabilized at pH 10.3. The metallurgical thallium-containing wastewater subjected to enhanced treatment in the strong alkaline treatment tank 2 enters a thallium removal reaction tank 3 through a pump 13 and a pipeline 12, a chemical thallium removal agent is added according to the mass ratio of the chemical thallium removal agent to thallium of 0.8:1, and the mixture is stirred and reacts for 40 min; separating thallium ions from the metallurgical thallium-containing wastewater. In order to thoroughly remove heavy metal thallium in the metallurgical wastewater; the metallurgical thallium-containing wastewater treated by the thallium removal reaction tank 3 enters the deep thallium removal reaction tank 4 through a pump 13 and a pipeline 12, a biological thallium removal agent is added for stirring reaction for 17min, and the mass volume ratio of the biological thallium removal agent to the solution is 180g/m3. The metallurgical thallium-containing wastewater treated by the deep thallium removal reaction enters a flocculation sedimentation tank through a pump 13 and a pipeline 12 and is added with 15g/m3Stirring the flocculating agent for reaction for 10min to react with the flocculating agent, and adsorbing a fine precipitate formed by thallium in the metallurgical wastewater; and (3) carrying out pressure filtration on the metallurgical thallium-containing wastewater treated by the flocculation sedimentation tank by a pressure filter 6, reducing the thallium content of the obtained filtrate to 0.001mg/L, returning the thallium-containing filtrate to a production system for recycling, and safely treating filter residues.
Example 2:
Adding metallurgical wastewater containing thallium 0.9mg/L into a pretreatment regulating tank 1, adding lime milk to perform homogeneous and uniform regulation on the metallurgical wastewater containing thallium, stabilizing the pH value of the metallurgical wastewater at pH8.7, adding into a strongly alkaline treatment tank 2 through a pump, and adding prepared Ca (OH)2the solution is subjected to an intensive treatment to ensure that the pH value of the metallurgical thallium-containing wastewater is stabilized at pH 10.7. The metallurgical thallium-containing wastewater subjected to enhanced treatment in the strong alkaline treatment tank 2 enters a thallium removal reaction tank 3 through a pump 13 and a pipeline 12, a chemical thallium removal agent is added according to the mass ratio of the chemical thallium removal agent to thallium of 0.6:1, and the mixture is stirred and reacts for 50 min; separating thallium ions from the metallurgical thallium-containing wastewater. In order to thoroughly remove heavy metal thallium in the metallurgical wastewater; the metallurgical thallium-containing wastewater treated by the thallium removal reaction tank 3 enters the deep thallium removal reaction tank 4 through a pump 13 and a pipeline 12, a biological thallium removal agent is added for stirring reaction for 15min, and the mass volume ratio of the biological thallium removal agent to the solution is 180g/m3. The metallurgical thallium-containing wastewater treated by the deep thallium removal reaction enters the flocculation through a pump 13 and a pipeline 1215g/m of the mixture is added into a sedimentation tank3Stirring the flocculating agent for reaction for 15min to react with the flocculating agent, and adsorbing a fine precipitate formed by thallium in the metallurgical wastewater; and (3) carrying out pressure filtration on the metallurgical thallium-containing wastewater treated by the flocculation sedimentation tank by a pressure filter 6, reducing the thallium content of the obtained filtrate to 0.001mg/L, returning the thallium-containing filtrate to a production system for recycling, and safely treating filter residues.
The utility model discloses the operation is stable, technology is succinct, the practicality is strong, it is convenient to maintain to the quantity of accessible adjustment medicament handles the metallurgical thallium-containing waste water of different contents, and through the even filling device of installation, makes the solution of adding evenly react for reaction rate promotes whole efficiency.
Finally, it is noted that the above-mentioned preferred embodiments illustrate rather than limit the invention, and that, although the invention has been described in detail with reference to the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the invention as defined by the appended claims.
Claims (4)
1. An apparatus for strengthening treatment of metallurgical thallium-containing wastewater, which is characterized in that: the device for strengthening treatment of the metallurgical thallium-containing wastewater comprises a pretreatment regulating tank, a strong alkaline treatment tank, a thallium removal reaction tank, a deep thallium removal reaction tank, a flocculation sedimentation tank, a filter press and an even filling device, wherein the pretreatment regulating tank, the strong alkaline treatment tank, the thallium removal reaction tank, the deep thallium removal reaction tank and the flocculation sedimentation tank are all internally provided with the even filling device through brackets, the pretreatment regulating tank, the strong alkaline treatment tank, the thallium removal reaction tank and the deep thallium removal reaction tank are respectively connected with the even filling device in the strong alkaline treatment tank, the thallium removal reaction tank, the deep thallium removal reaction tank and the flocculation sedimentation tank through pipelines, and the even filling devices in the pretreatment regulating tank, the strong alkaline treatment tank, the thallium removal reaction tank, the deep thallium removal reaction tank and the flocculation sedimentation tank are respectively connected with a lime milk preparation tank, a strong alkaline solvent preparation tank, a thallium removal agent preparation tank through pipelines, The biological deep thallium removal agent preparation tank and the flocculating agent preparation tank are connected, and pumps are arranged on the pipelines.
2. An apparatus for the enhanced treatment of thallium containing wastewater according to claim 1 wherein: the flocculation sedimentation tank is connected with a filter press through a pump and a pipeline.
3. An apparatus for the enhanced treatment of thallium containing wastewater according to claim 1 wherein: the uniform filling device comprises an annular pipe, a liquid inlet three-way joint, a liquid outlet three-way joint and a liquid outlet pipe, wherein the liquid inlet three-way joint and the liquid outlet three-way joint are uniformly arranged on the annular pipe, the liquid inlet three-way joint is connected with the pipeline, and the liquid outlet three-way joint is connected with the liquid outlet pipe.
4. An apparatus for the enhanced treatment of thallium containing wastewater according to claim 1 wherein: and the liquid outlet pipes on the uniform filling devices in the pretreatment regulating tank, the strong alkaline treatment tank, the thallium removal reaction tank, the deep thallium removal reaction tank and the flocculation sedimentation tank all extend to the bottom of the tank.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112499892A (en) * | 2020-11-06 | 2021-03-16 | 白银有色红鹭资源综合利用科技有限公司 | Treatment method for synchronous deep removal of thallium-containing heavy metal wastewater |
| CN114735857A (en) * | 2022-05-13 | 2022-07-12 | 甘肃厂坝有色金属有限责任公司 | Lead-zinc smelting industrial waste acid sewage treatment process |
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2019
- 2019-03-29 CN CN201920418083.4U patent/CN209797710U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112499892A (en) * | 2020-11-06 | 2021-03-16 | 白银有色红鹭资源综合利用科技有限公司 | Treatment method for synchronous deep removal of thallium-containing heavy metal wastewater |
| CN114735857A (en) * | 2022-05-13 | 2022-07-12 | 甘肃厂坝有色金属有限责任公司 | Lead-zinc smelting industrial waste acid sewage treatment process |
| CN114735857B (en) * | 2022-05-13 | 2023-08-25 | 甘肃厂坝有色金属有限责任公司 | Lead-zinc smelting industrial waste acid and sewage treatment process |
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