CN214032101U - Recovery processing device of palladium-containing waste liquid - Google Patents
Recovery processing device of palladium-containing waste liquid Download PDFInfo
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- CN214032101U CN214032101U CN202022813756.1U CN202022813756U CN214032101U CN 214032101 U CN214032101 U CN 214032101U CN 202022813756 U CN202022813756 U CN 202022813756U CN 214032101 U CN214032101 U CN 214032101U
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Abstract
The utility model relates to a recovery processing device of palladium-containing waste liquid, including containing palladium waste liquid basin, it is connected with first filter, first filter connects first ionic resin adsorption tower and the second ionic resin adsorption tower of parallelly connected setting through the filtrating collecting vat, an export in two tower bottoms all is connected with the adjustment tank that is equipped with palladium ion detector through the pipeline, an exit linkage filtrating collecting vat of adjustment tank, another export of adjustment tank connects gradually the evaporation concentrator, the second filter, the waste collecting vat, circulation structure is constituteed with the second filter to the evaporation concentrator, another export of two tower bottoms all is through the pipeline and connects gradually the electrolysis trough, the reservoir is connected with the inlet pipeline of first ionic resin adsorption tower and second ionic resin adsorption tower. The utility model discloses a recovery processing device who contains palladium waste liquid has that treatment effeciency is high, the treatment cost is low, but continuous operation handles, realizes the recycle of palladium resource, is suitable for the recovery processing who contains palladium waste liquid of various concentrations.
Description
Technical Field
The utility model belongs to the technical field of waste water treatment, concretely relates to recovery processing device who contains palladium waste liquid.
Background
The process of manufacturing printed circuit boards is complicated, and the waste water including photographic plate making, printing, etching, electroplating, chemical electroplating and the like has various sources and complex components. The palladium-containing waste liquid mainly exists in the working procedures of palladium plating, nickel-palladium-gold, palladium activation, palladium cylinder nitrate tank cleaning and the like in circuit boards or electroplating enterprises, and direct discharge not only causes pollution to the environment, but also causes waste of palladium, a rare and precious metal.
The method for recovering the palladium-containing waste liquid is various and mainly comprises a precipitation method, an activated carbon adsorption method and a solvent extraction method. The precipitation method is to add zinc powder or aluminum powder into a palladium-containing solution to displace palladium, and the obtained crude palladium is subjected to acid boiling chlorination and then is subjected to a complex dichlorodiamminepalladium refining process to obtain high-purity palladium powder. The activated carbon adsorption method is to adsorb palladium from a low palladium content solution to achieve the effect of noble metal separation, but the regeneration of activated carbon is difficult. The solvent extraction method is to add a specific organic solvent into a palladium-containing solution to ensure that palladium in the solution and a complex formed by the palladium in the solution are enriched in an organic phase, and perform back extraction on the separated organic phase by using thiourea or ammonia water and the like to obtain a back extraction solution rich in palladium.
Chinese patent CN204224676U discloses a palladium recovery device, which comprises a first tower, a second tower, a base, a connecting pipe, a valve, a flowmeter and a pump, wherein a first tower inlet is arranged above the first tower, the first tower inlet is connected with the pump through the connecting pipe, a first tower outlet is arranged below the first tower, a second tower inlet is arranged above the second tower, the first tower outlet is connected with the second tower through the connecting pipe, and a second tower outlet is arranged below the second tower; however, the patent has the following disadvantages: (1) the patent only relates to the recovery of palladium and does not relate to the treatment of the waste liquid after the ion resin adsorption; (2) the method adopts double towers connected in series for adsorption, wherein the adsorption resin is replaced after the adsorption of the first tower is saturated, and the adsorption resin is replaced by the second tower after the adsorption resin is replaced by the first tower, so that the replacement of the resin not only greatly improves the cost, but also ensures that the recovery process must be stopped, and greatly reduces the recovery efficiency; (3) the patent is suitable for the waste liquid containing high-concentration palladium, is not suitable for the waste liquid containing low-concentration palladium, and limits the application range of the utility model.
Disclosure of Invention
The utility model aims at providing a recovery processing device who contains palladium waste liquid has that treatment efficiency is high, the treatment cost is low, but continuous operation handles, realizes the recycle of palladium resource, is suitable for the recovery processing who contains palladium waste liquid of various concentrations.
The utility model provides a technical scheme that above-mentioned problem adopted does: the utility model provides a recovery processing device who contains palladium waste liquid, recovery processing device is including containing palladium waste liquid basin, contain palladium waste liquid basin and connect gradually the subsider, first filter, filtrating collecting vat, ionic resin adsorption tower, the ionic resin adsorption tower is first ionic resin adsorption tower and second ionic resin adsorption tower of parallel connection, a bottom export of first ionic resin adsorption tower and second ionic resin adsorption tower all is connected through the pipeline with the adjustment tank that is equipped with palladium ion detector, an exit linkage filtrating collecting vat of adjustment tank, another export of adjustment tank connects gradually evaporation concentrator, second filter, waste collecting vat, evaporation concentrator with the second filter component circulation structure, another export in the bottom of first ionic resin adsorption tower and second ionic resin adsorption tower all connects gradually the electrolysis trough through the pipeline, And an outlet of the liquid storage tank is connected with inlet pipelines of the first ion resin adsorption tower and the second ion resin adsorption tower.
Preferably, the first ion resin adsorption tower and the second ion resin adsorption tower are both provided with dilute hydrochloric acid feeding devices.
Preferably, a stirring device is arranged in the adjusting tank.
Preferably, the circulation structure formed by the evaporation concentrator and the second filter is specifically as follows: the outlet of the evaporation concentrator is connected with the inlet of the second filter, and the outlet of the second filter is connected with the inlet of the evaporation concentrator.
Preferably, the electrolytic cell comprises a cathode chamber and an anode chamber, and the cathode chamber and the anode chamber are arranged at intervals through a separation membrane.
Preferably, the inlet pipeline and the outlet pipeline of the first ion resin adsorption tower are provided with flow meters, and the inlet pipeline and the outlet pipeline of the second ion resin adsorption tower are provided with flow meters.
Compared with the prior art, the utility model has the advantages of:
(1) the utility model discloses a parallel connection's first ion resin adsorption tower and second ion resin adsorption tower, two ion resin adsorption towers adsorb in turn, regenerate, need not to suspend the recovery processing process, and the recovery processing technology who contains the palladium waste liquid has realized continuous operation, has reduced treatment cost.
(2) Compare among the prior art waste liquid after the ion resin adsorption and directly send to the sewage treatment station through handling, the utility model discloses the waste liquid after adsorbing through the ion resin adsorption tower loops through evaporative concentration, second filter filtration, and filters the filtrating that produces and returns evaporative concentration once more in the evaporative concentration ware for waste liquid normal water vaporization, effectively realized the minimizing of waste liquid, greatly reduced the handling capacity of final discarded object, and can not produce secondary pollution.
(3) Compare and still contain a small amount of palladium in the waste liquid after the resin adsorption among the prior art, the rate of recovery is low, the utility model discloses in be provided with the adjustment tank that contains palladium ion detector, the waste liquid after the absorption detects through palladium ion detector, detects unqualifiedly, and the refluence is carried out resin adsorption again, until through detecting qualified back, reentrant next procedure, the content of palladium in the processing back waste liquid that has significantly reduced, the rate of recovery is high.
Drawings
Fig. 1 is a schematic structural diagram of a recovery processing device for palladium-containing waste liquid in the embodiment of the present invention.
Wherein: 1 is a palladium-containing waste liquid storage tank, 2 is a settling tank, 3 is a first filter, 4 is a filtrate collecting tank, 5-1 is a first ion resin adsorption tower, 5-2 is a second ion resin adsorption tower, 6 is an adjusting tank, 7 is an evaporation concentrator, 8 is a second filter, 9 is a waste collecting tank, 10 is an electrolytic tank, and 11 is a liquid storage tank.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
As shown in fig. 1, a schematic structural diagram of the recovery processing device for palladium-containing waste liquid in this embodiment is shown.
A recovery processing device for palladium-containing waste liquid comprises a palladium-containing waste liquid storage tank 1, wherein the palladium-containing waste liquid storage tank 1 is connected with an inlet of a first filter 3 through a settling tank 2, an outlet of the first filter 3 is connected with a filtrate collecting tank 4, the filtrate collecting tank 4 is connected with an ionic resin adsorption tower, the ionic resin adsorption tower is a first ionic resin adsorption tower 5-1 and a second ionic resin adsorption tower 5-2 which are connected in parallel, the first ionic resin adsorption tower 5-1 and the second ionic resin adsorption tower 5-2 are both provided with a dilute hydrochloric acid feeding device, one outlets at the bottom ends of the first ionic resin adsorption tower 5-1 and the second ionic resin adsorption tower 5-2 are both connected with an adjusting tank 6 provided with a palladium ion detector through pipelines, one outlet of the adjusting tank 6 is connected with the filtrate collecting tank 4, and the other outlet of the adjusting tank 6 is sequentially connected with an evaporation concentrator 7, A second filter 8 and a waste collection tank 9, wherein the evaporation concentrator 7 and the second filter 8 form a circulation structure, specifically: an outlet of the evaporation concentrator 7 is connected with an inlet of the second filter 8, an outlet of the second filter 8 is connected with an inlet of the evaporation concentrator 7, the other outlets at the bottom ends of the first ion resin adsorption tower 5-1 and the second ion resin adsorption tower 5-2 are sequentially connected with an electrolytic tank 10 and a liquid storage tank 11 through pipelines, and an outlet of the liquid storage tank 11 is connected with inlet pipelines of the first ion resin adsorption tower 5-1 and the second ion resin adsorption tower 5-2.
Wherein, a stirring device is arranged in the adjusting tank 6; the electrolytic cell 10 comprises a cathode chamber and an anode chamber, wherein the cathode chamber and the anode chamber are arranged at intervals through a separation membrane; the inlet pipeline and the outlet pipeline of the first ionic resin adsorption tower 5-1 are both provided with flow meters, and the inlet pipeline and the outlet pipeline of the second ionic resin adsorption tower 5-2 are both provided with flow meters.
The operation of this embodiment is described in detail below with reference to the accompanying drawings:
firstly, conveying the palladium-containing waste liquid in a palladium-containing waste liquid storage tank 1 to a first filter 3 through a settling tank 2, pretreating to remove particles in the waste liquid, avoiding the influence of the particles on each subsequent treatment link, conveying the filtered filtrate into a filtrate collection tank 4, then conveying the filtrate into a first ion resin adsorption tower 5-1, adsorbing palladium ions in the waste liquid into resin, conveying the adsorbed waste liquid to an adjusting tank 6, carrying out palladium ion detection through a palladium ion detector, returning the waste liquid to the filtrate collection tank 4 again and conveying the waste liquid to an ion resin adsorption tower for continuous adsorption if the detection does not reach the standard, adjusting the pH value to be neutral if the detection reaches the standard through the palladium ion detector, then sequentially evaporating and concentrating through an evaporation concentrator 7, filtering through a second filter 8, returning the filtered filtrate to an evaporation concentrator 11 for continuous evaporation, and directly discharging the evaporated waste liquid after the detection is qualified, the waste obtained by concentration is filtered and then stored in a waste collecting tank 9, and then secondary treatment is carried out.
In the process of ion adsorption of the palladium-containing waste liquid, when the first ion resin adsorption tower 5-1 is saturated in adsorption, the palladium-containing waste liquid enters the second ion resin adsorption tower 5-2, when the second ion resin adsorption tower 5-2 starts to perform adsorption work, the first ion resin adsorption tower 5-1 is regenerated, hydrochloric acid is used for resolving and regenerating the adsorption resin to obtain a metal palladium ion concentrated solution, finally the metal palladium ion concentrated solution is conveyed into the electrolytic tank 10 for electrolysis, deposition is performed to obtain metal palladium with high purity, the solution which does not contain palladium ions after electrolysis in the electrolytic tank 10 is conveyed into the liquid storage tank 11, and the solution in the liquid storage tank 11 is circulated to the first ion resin adsorption tower 5-1 and the second ion resin adsorption tower 5-2 for continuous use.
In addition, after the regeneration of the first ion resin adsorption tower 5-1 is completed, the first ion resin adsorption tower is in a state of waiting for adsorption, when the second ion resin adsorption tower 5-2 is saturated in adsorption, the first ion resin adsorption tower 5-1 performs adsorption, the second ion resin adsorption tower 5-2 performs regeneration, and the two ion resin adsorption towers alternately perform adsorption.
In addition to the above embodiments, the present invention also includes other embodiments, and all technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.
Claims (6)
1. The utility model provides a recovery processing device of palladium-containing waste liquid which characterized in that: the recovery processing device comprises a palladium-containing waste liquid storage tank (1), wherein the palladium-containing waste liquid storage tank (1) is sequentially connected with a settling tank (2), a first filter (3), a filtrate collecting tank (4) and an ionic resin adsorption tower, the ionic resin adsorption tower is a first ionic resin adsorption tower (5-1) and a second ionic resin adsorption tower (5-2) which are connected in parallel, one outlets at the bottom ends of the first ionic resin adsorption tower (5-1) and the second ionic resin adsorption tower (5-2) are respectively connected with an adjusting tank (6) provided with a palladium ion detector through pipelines, one outlet of the adjusting tank (6) is connected with the filtrate collecting tank (4), the other outlet of the adjusting tank (6) is sequentially connected with an evaporation concentrator (7), a second filter (8) and a waste collecting tank (9), and the evaporation concentrator (7) and the second filter (8) form a circulating structure, the other outlets at the bottom ends of the first ion resin adsorption tower (5-1) and the second ion resin adsorption tower (5-2) are sequentially connected with an electrolytic tank (10) and a liquid storage tank (11) through pipelines, and the outlet of the liquid storage tank (11) is connected with the inlet pipelines of the first ion resin adsorption tower (5-1) and the second ion resin adsorption tower (5-2).
2. The apparatus for recovering and treating a palladium-containing waste liquid according to claim 1, characterized in that: and the first ion resin adsorption tower (5-1) and the second ion resin adsorption tower (5-2) are both provided with dilute hydrochloric acid feeding devices.
3. The apparatus for recovering and treating a palladium-containing waste liquid according to claim 1, characterized in that: and a stirring device is arranged in the adjusting tank (6).
4. The apparatus for recovering and treating a palladium-containing waste liquid according to claim 1, characterized in that: the evaporation concentrator (7) and the second filter (8) form a circulating structure which is characterized in that: the outlet of the evaporation concentrator (7) is connected with the inlet of the second filter (8), and the outlet of the second filter (8) is connected with the inlet of the evaporation concentrator (7).
5. The apparatus for recovering and treating a palladium-containing waste liquid according to claim 1, characterized in that: the electrolytic cell (10) comprises a cathode chamber and an anode chamber, wherein the cathode chamber and the anode chamber are arranged at intervals through a separation membrane.
6. The apparatus for recovering and treating a palladium-containing waste liquid according to claim 1, characterized in that: the inlet pipeline and the outlet pipeline of the first ion resin adsorption tower (5-1) are both provided with flow meters, and the inlet pipeline and the outlet pipeline of the second ion resin adsorption tower (5-2) are both provided with flow meters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022813756.1U CN214032101U (en) | 2020-11-30 | 2020-11-30 | Recovery processing device of palladium-containing waste liquid |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022813756.1U CN214032101U (en) | 2020-11-30 | 2020-11-30 | Recovery processing device of palladium-containing waste liquid |
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| CN214032101U true CN214032101U (en) | 2021-08-24 |
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| CN202022813756.1U Active CN214032101U (en) | 2020-11-30 | 2020-11-30 | Recovery processing device of palladium-containing waste liquid |
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