CN217264941U

CN217264941U - Contain noble metal waste water recovery system

Info

Publication number: CN217264941U
Application number: CN202220497183.2U
Authority: CN
Inventors: 吴世平; 李梓光; 吴伟平
Original assignee: Guangdong Changxin Precision Equipment Co Ltd
Current assignee: Guangdong Changxin Precision Equipment Co Ltd
Priority date: 2022-03-09
Filing date: 2022-03-09
Publication date: 2022-08-23
Anticipated expiration: 2032-03-09

Abstract

The utility model relates to a waste liquid recovery technical field discloses a contain precious metal waste water recovery system, and it is including reation kettle, pump, filter pressing device and the reaction tank that connects gradually, and recovery system still includes acidification device, charge device and control system, acidification device is connected with reation kettle through the pipeline respectively with charge device, acidification device is arranged in adding the pH value of acid regulation waste water toward reation kettle, charge device is arranged in adding the reaction medicament toward reation kettle, control system is connected with acidification device, charge device electricity respectively. The utility model discloses a contain precious metal waste water recovery system can carry out the adaptation according to waste water treatment batch flow and add relevant chemical raw materials, ensures that the precious metal retrieves thoroughly in the waste water, the risk that probably takes place when having avoided artifical manual reinforced. The acid adding device and the chemical adding device are matched by adopting a metering pump and a flowmeter, so that the precise constant-speed quantitative metering acid adding and chemical dispensing can be realized, and the secondary pollution to the wastewater can be avoided.

Description

Contain noble metal waste water recovery system

Technical Field

The utility model relates to a waste liquid recovery technical field specifically, relates to a contain precious metal waste water recovery system.

Background

One of the important semiconductor materials is noble metal, and has wide and important application in the fields of semiconductors, aerospace measurement and control, nuclear physics detection, optical fiber communication, infrared optics, solar cells, chemical catalysts, biomedicine and the like. In the process of processing the noble metal, a large amount of waste water is inevitably generated, and if the waste water is directly discharged, the environment is seriously polluted; in addition, the noble metal is used as a rare metal and has higher value; therefore, the method not only can play a role in environmental protection for the recovery of the noble metals in the wastewater, but also has great economic benefit.

Chemical enterprises pay more attention to the problem of recovering precious metals in wastewater, but a recovery device or a recovery system generally stays in an original stage, and the precious metal is separated and extracted by adding related chemical substances to react to generate colloid capable of adsorbing precious metal particles. At present conventional recovery unit does not carry out automated operation to this process of adding chemical substance, generally by artifical manual feeding, brought the health risk for the production workman among this intangible, artifical feeding can't accurate control addition volume, add time isoparametric simultaneously, in case add excessively, probably can make to remain more harmful in the waste water on the contrary, add and then probably lead to in the waste water noble metal particle recovery not thorough excessively.

Disclosure of Invention

The to-be-solved technical problem of the utility model lies in overcoming prior art's defect, provides one kind and can separate the noble metal particle and can not cause secondary pollution's the waste water containing noble metal waste water recovery system to waste water.

The utility model discloses the purpose realizes through following technical scheme:

a recovery system for waste water containing noble metals comprises a reaction kettle, a pumping pump, a filter pressing device and a reaction tank which are sequentially connected, and also comprises an acid adding device, a dosing device and a control system, wherein the acid adding device and the dosing device are respectively connected with the reaction kettle through pipelines, and the control system is respectively electrically connected with the acid adding device and the dosing device; after adding the reaction agent in the reaction kettle, introducing alkali liquor to perform a chemical reaction to generate a colloidal substance so as to adsorb the noble metal particles; the filter pressing device is used for carrying out dry-wet separation on colloidal substances adsorbing noble metal particles, and the solid obtained after separation enters a reaction tank to be subjected to acid treatment to obtain the noble metal.

Further, the acid adding device comprises an acid adding metering pump and an acid liquid flow meter which are sequentially arranged on the pipeline.

Further, the dosing device comprises a dosing metering pump and a liquid medicine flow meter which are sequentially arranged on the pipeline.

Further, recovery system still includes the conduction oil unit, and the reation kettle inner wall sets up the coil pipe, the conduction oil unit is located the reation kettle outside and communicates with reation kettle inner coil pipe.

Furthermore, a stirring blade is arranged in the reaction kettle.

Further, a pH sensor is arranged in the reaction kettle.

Further, a temperature sensor is arranged in the reaction kettle.

Further, the recovery system also comprises a PC monitoring system for monitoring the pH value and the temperature in the reaction kettle, and the PC monitoring system is electrically connected with the control system.

Further, the control system comprises a PLC controller.

Compared with the prior art, the utility model discloses following beneficial effect has:

1) the recovery system basically realizes the automation of the whole process from the input of wastewater to the final production of precious metals, particularly the acid adding device and the chemical adding device are controlled by the control system to add acid and chemical materials, and the recovery system can adaptively add related chemical raw materials according to the flow of a wastewater treatment batch, so that a proper amount of colloidal substances generated in the wastewater can be ensured to adsorb the precious metals, the recovery rate of the precious metals is maximized, and the chemical raw materials are added without manual participation, thereby avoiding the risk possibly generated during manual feeding;

2) the acid adding device and the chemical adding device are matched by a metering pump and a flowmeter, so that the precise constant-speed quantitative metering and acid adding and chemical dispensing can be realized, and secondary pollution to wastewater can be avoided.

Drawings

FIG. 1 is a schematic view showing the construction of a system for recovering waste water containing noble metals according to example 1.

Detailed Description

The invention will be further described with reference to specific embodiments, wherein the drawings are designed solely for the purpose of illustration and not as a definition of the limits of the patent; for a better explanation of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

Example 1

The recovery system of the waste water containing noble metals is shown in figure 1 and comprises a reaction kettle 1, a pumping pump 2, a filter pressing device 3 and a reaction tank 4 which are connected in sequence, the recovery system also comprises an acid adding device 5, a medicine adding device 6 and a control system 7, the acid adding device 5 and the medicine adding device 6 are respectively connected with the reaction kettle through pipelines, the acid adding device 5 is used for adding acid into the reaction kettle 1 to adjust the pH value of the waste water, the medicine adding device 6 is used for adding reaction reagents into the reaction kettle 1, the control system 7 is respectively electrically connected with the acid adding device 5 and the medicine adding device 6, and the control system comprises a PLC controller; after the reaction medicament is added into the reaction kettle 1, alkali liquor is introduced to carry out chemical reaction to generate colloidal substances for adsorbing the noble metal particles; the filter pressing device 3 is used for carrying out dry-wet separation on colloidal substances adsorbing noble metal particles, and solid substances obtained after separation enter the reaction tank 4 to be treated by adding acid, so that noble metals are obtained.

Add the sour device of this embodiment recovery system and add for the concentrated sulfuric acid, industrial waste water is carried to reation kettle after, control system combines industrial waste water's transport capacity control to add sour device work in order to add quantitative concentrated sulfuric acid, the concentrated sulfuric acid can make liquid become sour nature in the reation kettle, control system carries out the pH control to liquid in the reation kettle, when reaching the settlement pH value, control system control charge device work, the material that charge device added is the ferric trichloride, later add the sodium hydroxide in the reation kettle, sodium hydroxide reacts with the ferric trichloride and generates the iron hydroxide colloid, adsorb the noble metal particle and deposit of floating in the waste water through the iron hydroxide colloid. After the solution in the reaction kettle is settled and clarified, pumping the solution at the bottom in the reaction kettle to a filter pressing device by a pumping pump for dry-wet separation to obtain iron hydroxide solid containing noble metal, and discharging the filtered water to a storage tank for water quality detection to discharge when the water reaches a discharge standard; and then putting the ferric hydroxide solid into a reaction tank, adding hydrochloric acid to react and dissolve the ferric hydroxide to obtain water and ferric trichloride, wherein the noble metal solid cannot react with the hydrochloric acid, so that the noble metal cannot be dissolved, the water and the ferric trichloride solution generated by the reaction are discharged to obtain high-content noble metal, and the ferric trichloride can be used as a chemical raw material to be put into a reaction kettle for recycling.

The control system 7 can adaptively add corresponding chemical raw materials such as concentrated sulfuric acid and ferric trichloride according to the flow of a wastewater treatment batch, the acid adding device 5 comprises an acid adding metering pump and an acid liquid flow meter which are sequentially arranged on a pipeline, the medicine adding device 6 comprises a medicine adding metering pump and a liquid medicine flow meter which are sequentially arranged on the pipeline, and the metering pump and the flow meter are combined for use, so that the control system can be assisted to realize precise constant-speed quantitative metering, acid mixing and medicine dispensing; meanwhile, the manpower is liberated, and the risk possibly caused by manual feeding in the traditional method is avoided.

Chemical raw materials need to be fully fused with waste water in the reaction kettle after being added into the reaction kettle, so stirring vane 11 has still been set up in reaction kettle 1, stirring vane 11 is driven by the motor and is rotatory, and the motor is connected with control system electricity, and after adding the acid, control system 7 control motor work makes concentrated sulfuric acid and waste water fully fuse in order to change the pH value of whole solution, and in addition, after adding the medicine, stirring vane 11 also need rotate so that the reaction process of ferric trichloride and sodium hydroxide is accelerated.

In order to further improve the chemical reaction efficiency in the reaction kettle 1, the recovery system is also provided with a heat conduction oil unit 8, the inner wall of the reaction kettle is provided with a coil 12, the heat conduction oil unit 8 is positioned outside the reaction kettle and is communicated with the coil 12 in the reaction kettle 1, and the heat conduction oil unit 8 can inject hot oil into the coil 12 to heat and raise the contents of the reaction kettle to a proper temperature. The stirring blade 11 is also continuously rotated in the temperature rising process, so that the solution is uniformly heated, and the reaction is accelerated.

A pH sensor, a temperature sensor and the like are arranged in the reaction kettle 1, the recovery system further comprises a PC monitoring system 9, the PC monitoring system 9 is electrically connected with the control system 7, and on one hand, the PC monitoring system collects pH values and temperature parameters in the reaction kettle in real time and feeds back the pH values and the temperature parameters to the control system so that the control system can send out work instructions to related structures; on the other hand, the batch of wastewater treatment, the adding amount of chemical raw materials, the quality data of wastewater treatment and the like can be monitored in real time, so that the production process is more stable, and the production management and control are more convenient.

The recovery system provided by the application has the advantages that the original wastewater is subjected to colloid reaction, and high-content precious metals are separated out through solid-liquid separation, so that waste is changed into valuable, resources are saved, and considerable economic benefits can be generated; and moreover, the quality of the wastewater is improved through colloidal precipitation and neutralization reaction, and meanwhile, the wastewater reaches the discharge standard, the water quality environment is improved, and the wastewater treatment cost is saved.

It should be understood that the above-mentioned embodiments are only examples for clearly illustrating the technical solutions of the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A precious metal-containing wastewater recovery system is characterized in that the recovery system comprises a reaction kettle, a pumping pump, a filter pressing device and a reaction tank which are connected in sequence; the recycling system further comprises an acid adding device, a dosing device and a control system, wherein the acid adding device and the dosing device are respectively connected with the reaction kettle through pipelines, and the control system is respectively electrically connected with the acid adding device and the dosing device.

2. The system for recovering waste water containing noble metal according to claim 1, wherein the acid adding device comprises an acid adding metering pump and an acid liquid flow meter which are arranged on the pipeline in sequence.

3. The system for recycling the wastewater containing the noble metals according to claim 1, wherein the dosing device comprises a dosing pump and a liquid medicine flow meter which are sequentially arranged on a pipeline.

4. The precious metal-containing wastewater recovery system according to claim 1, further comprising a heat conduction oil unit, wherein a coil is arranged on the inner wall of the reaction kettle, and the heat conduction oil unit is located on the outer side of the reaction kettle and is communicated with the coil in the reaction kettle.

5. The system for recovering waste water containing noble metal according to claim 1 or 4, wherein a stirring blade is provided in the reaction tank.

6. The system for recycling wastewater containing noble metals according to claim 1, wherein a pH sensor is disposed in the reaction kettle.

7. The system for recycling wastewater containing precious metals according to claim 1, wherein a temperature sensor is provided in the reaction kettle.

8. The recycling system for wastewater containing precious metals according to claim 1, further comprising a PC monitoring system for monitoring pH and temperature in the reaction vessel, wherein the PC monitoring system is electrically connected to the control system.

9. The precious metal-containing wastewater recovery system of claim 1, wherein the control system comprises a PLC controller.