CN218026346U - Tin stripping waste liquid treatment device - Google Patents

Abstract

The utility model relates to a move back tin waste liquid treatment technical field, specifically be moving back tin waste liquid treatment device, including the waste liquid storage tank, the waste liquid storage tank has heavy tin pond through the tube coupling, it has tin machine to sink the tin pond through the tube coupling, it has heavy copper pond through the tube coupling to strain the tin machine, it has the filter through the tube coupling to strain the copper machine, the filter has the adjustment tank through the tube coupling, the effect is through adding the copper in proper amount high-efficient separating agent messenger's useless tin liquid that moves back to the useless tin liquid that became invalid, tin ion separates with the tin liquid that moves back through filtering back, keep moving back the original useful chemical composition of tin liquid, after a series of process flows such as rethread adjustment parameter, make the tin water that moves back of inefficacy can recycle again.

Description

Tin stripping waste liquid treatment device

Technical Field

The utility model relates to a move back tin waste liquid treatment technical field, specifically be moving back tin waste liquid treatment device.

Background

Tin stripping is one of the largest procedures for producing waste liquid in PCB enterprises, 0.75 cubic meter of waste tin stripping liquid is produced when a 1000 square meter circuit board is produced, the heavy metal content in the waste liquid is high: 80-100g/L of tin, 10-20g/L of copper, 30-50g/L of iron and the like, as well as lead, nickel, silver and the like, high pollution index, large acidity of free acid and various other organic compounds;

the tin stripping waste liquid has high metal content and high acidity, and the system is complex, so that the treatment is quite difficult and complex, only the research on removing lead from the waste tin stripping liquid is internationally carried out, but how to remove tin and copper is not mentioned, and the research on recycling of the waste tin stripping liquid is less carried out, so far, a feasible industrialized technology is not provided for thoroughly solving the problem of environmental pollution caused by the waste tin stripping liquid, and although the multistage transfer treatment is adopted at present, the energy consumption and the cost are high, the serious secondary pollution is still caused, and the treatment has great harm to human beings, organisms and the environment, so a tin stripping waste liquid treatment device is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a move back tin waste liquid treatment device to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: move back tin waste liquid processing apparatus, including the waste liquid storage tank, the waste liquid storage tank has heavy tin pond through the tube coupling, it has tin machine to sink the tin pond through the tube coupling, tin machine has heavy copper pond through the tube coupling, heavy copper pond has copper machine through the tube coupling, it has the filter through the tube coupling to strain the copper machine, the filter has the adjustment pond through the tube coupling.

Preferably, the tin precipitation tank and the copper precipitation tank are both coagulation sedimentation tanks, the tin precipitation tank is internally added with a reducing additive and a special tin precipitation agent to precipitate tin in the wastewater, and the copper precipitation tank is internally added with a special copper precipitation agent to precipitate copper in the wastewater.

Preferably, the tin filter and the copper filter are plate and frame filters, the tin filter can filter tin mud and gradually form a tin mud cake, and the copper filter can filter copper mud and gradually form a copper mud cake.

Preferably, the filter is composed of a microfiltration system, and the filter is used for performing precise filtration on the wastewater.

Preferably, nitric acid and an additive are added into the adjusting tank to finally adjust the wastewater.

Preferably, a plurality of connecting pipelines are all provided with pneumatic diaphragm pumps.

Compared with the prior art, the beneficial effects of the utility model are that:

through adding the copper in the useless tin liquid that moves back of right amount of high-efficient separating agent messenger to useless tin liquid that became invalid, tin ion separates through filtering back and tin liquid that moves back, keeps moving back the original useful chemical composition of tin liquid, after a series of process flows such as adjustment parameter, make tin water that moves back of inefficacy can recycle again, and the metallic tin copper compound purity that abstracts out from useless tin water that moves back is high, and it is precious to change the useless, and ensure the tin effect that moves back after tin water regeneration, the utility model discloses not only contain simply, with low costs, easy operation etc. advantage to zero release in addition, 100% recycle's economic benefits.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

In the figure: the device comprises a waste liquid storage tank 1, a tin precipitation tank 2, a tin filtering machine 3, a copper precipitation tank 4, a copper filtering machine 5, a filter 6 and an adjusting tank 7.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below. The embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts, all belong to the protection scope of the present invention.

Referring to fig. 1, the utility model provides a move back tin waste liquid treatment device, including waste liquid storage tank 1, waste liquid storage tank 1 has heavy tin pond 2 through the tube coupling, heavy tin pond 2 has tin filter machine 3 through the tube coupling, tin filter machine 3 has heavy copper bath 4 through the tube coupling, heavy tin pond 2 is coagulating sedimentation tank with heavy copper bath 4, heavy copper bath 4 has copper filter machine 5 through the tube coupling, tin filter machine 3 is the plate frame filter with copper filter machine 5, copper filter machine 5 has filter 6 through the tube coupling, filter 6 comprises the micro-filtration system, filter 6 has adjusting tank 7 through the tube coupling, all installs pneumatic diaphragm pump on a plurality of connecting pipes.

The waste liquid storage tank 1 is used for storing tin-stripping waste water, the waste liquid storage tank 1 pumps the waste water into a tin precipitation tank 2 through a pneumatic diaphragm pump, a reducing additive and a special tin precipitation agent are added into the tin precipitation tank 2, so that tin in the waste water is precipitated into tin mud and is precipitated downwards, the tin mud and the waste water are pumped into a tin filter 3 through the tin precipitation tank 2 through the pneumatic diaphragm pump, the tin mud is intercepted in a filter chamber by filter cloth in the tin filter 3, and a tin mud cake is gradually formed (the tin mud cake can be bagged and stored in a centralized manner);

the tin filtering machine 3 pumps the filtered wastewater into the copper precipitation tank 4 through a pneumatic diaphragm pump, a special copper precipitation agent is added into the copper precipitation tank 4 to separate out copper in the wastewater into copper mud and precipitate downwards, the copper mud and the wastewater are both pumped into the copper filtering machine 5 through the pneumatic diaphragm pump by the copper precipitation tank 4, and the copper mud is intercepted in a filtering chamber by a filtering cloth in the copper filtering machine 5 and gradually forms a copper mud cake (the copper mud cake can be bagged and stored intensively);

the copper filter 5 pumps the filtered waste water into the filter 6 through the pneumatic diaphragm pump, the filter 6 carries out precise filtration on the waste water, the waste water is further purified and separated, the filter 6 pumps the purified waste water into the adjusting tank 7 through the pneumatic diaphragm pump, auxiliary materials such as nitric acid and additives are put into the adjusting tank 7, and therefore the waste water is adjusted to the index meeting the requirements of production parameters and is returned to the production line for reuse.

The working principle is as follows:

the tin stripping reaction principle:

sn +4HNO3 (concentrated) = H2SnO3 ↓ +4NO2 ≠ H2O;

the regeneration and precipitation principle of the waste tin stripping liquid is as follows:

2H2C2O4+2H2SnO3＝2SnC2O4↓+4H2O+O2↑

H2C2O4+Cu(NO3)2＝CuC2O4↓+2HNO3；

utilize heavy tin pond 2 and heavy copper pond 4 to separate out tin and copper in the waste water respectively, and utilize the filter cloth in tin machine 3 and the copper machine 5 of straining respectively to intercept tin mud and copper mud in the filter chamber, and progressively form tin mud cake and copper mud cake, filter 6 carries out the secondary filter to the waste water behind filtering tin mud and the copper mud, make waste water further purification and separation, and finally drop into nitric acid in to the adjustment tank 7, auxiliary material such as additive, thereby adjust waste water to the index that accords with production parameter requirement, and then return and use once more on the production line.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. Move back tin waste liquid processing apparatus, including waste liquid storage tank (1), its characterized in that: waste liquid storage tank (1) has heavy tin pond (2) through the tube coupling, it has tin machine (3) to sink tin pond (2) through the tube coupling, tin machine (3) have heavy copper pond (4) through the tube coupling, heavy copper pond (4) have copper machine (5) through the tube coupling, copper machine (5) have filter (6) through the tube coupling, filter (6) have adjustment pond (7) through the tube coupling.

2. The tin-stripping waste liquid treatment apparatus according to claim 1, characterized in that: the tin precipitation tank (2) and the copper precipitation tank (4) are both coagulation precipitation tanks, a reducing additive and a special tin precipitation agent are added into the tin precipitation tank (2) to precipitate tin in the wastewater, and a special copper precipitation agent is added into the copper precipitation tank (4) to precipitate copper in the wastewater.

3. The tin-stripping waste liquid treatment device according to claim 1, characterized in that: the tin filter (3) and the copper filter (5) are plate-and-frame filters, the tin filter (3) can filter tin mud and gradually form a tin mud cake, and the copper filter (5) can filter copper mud and gradually form a copper mud cake.

4. The tin-stripping waste liquid treatment apparatus according to claim 1, characterized in that: the filter (6) is composed of a micro-filtration system, and the filter (6) is used for precisely filtering the wastewater.

5. The tin-stripping waste liquid treatment apparatus according to claim 1, characterized in that: nitric acid and additives are added into the adjusting tank (7) to finally adjust the wastewater.

6. The tin-stripping waste liquid treatment device according to claim 1, characterized in that: pneumatic diaphragm pumps are installed on the connecting pipelines.

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