TWM540865U - Noble metal auto-activating ion exchange resin tower system - Google Patents

Description

Precious metal auto-activated ion exchange resin tower system

This creation relates to the field of precious metal recycling equipment, in particular to a noble metal auto-activated ion exchange resin tower system.

The existing precious metal ion exchange resin tower in the precious gold waste liquid is mainly a water pump, a storage tank, and the precious gold waste liquid is adsorbed to the noble metal through the one or more resin towers, and the waste water is discharged. Manually switch the valve 13a in Figure 1, valve 15a, valve 22a, valve 26a open, other valves are closed, after washing for a period of time, the suspension of the resin in the resin tower causes the resin layer to be blocked by manual backwashing. When washing, the valve 11a, the valve 14a, the valve 21a, the valve 24a are opened manually, and the other valves are closed, and the waste water is discharged during the backwashing. If the situation is serious, the resin is taken out and washed, and then loaded into the tower.

Because only one pump and one front end contain precious gold water tank, when the resin needs to be pretreated and contaminated (such as telluride, organic matter, suspended solids, etc.), it is impossible to achieve resin regeneration and treatment by conventional technology and manual backwashing. Resin contamination problem, because the new resin needs to be pretreated, the new resin often contains a small amount of organic oligomers and inorganic impurities, which will gradually dissolve and release at the initial stage of use. The conventional technology and manual backwashing alone cannot guarantee the resin to be fully regenerated. With the ability to recover resin adsorption, lead to the loss of precious metals in subsequent processing. When the resin is contaminated, the suspended matter blocks the voids of the resin layer, thereby increasing the water flow resistance, and also covering the surface of the resin particles, thereby reducing the working exchange capacity thereof, and the conventional technique and manual backwashing cannot be performed at all. Scientifically and effectively achieve a fixed flow rate at an appropriate time, even causing damage to the pump and loss of precious metals. Because the prior art is artificial backwashing, there is only one water pump and one front end containing precious gold water tank. When the water is started, the water flow is unstable, and some of the precious gold-containing waste water will be discharged to the waste water through the resin layer, when the resin is backwashed. In the non-compact state, most of the precious gold-containing wastewater will be discharged into the wastewater through the resin layer, resulting in the loss of precious metals. The conventional technology is artificial backwashing. In different precious gold wastewaters and external environments, the degree of resin contamination is different. When artificial backwashing, it is difficult to effectively treat the water flow instability caused by resin contamination. Precious metals are lost and labor intensive and inefficient.

Summarize the above technical problems: (1) The new resin pretreatment can not guarantee the full regeneration of the resin, leading to the loss of precious metals in the subsequent treatment; (2) When the resin is contaminated, the fixed flow rate cannot be achieved scientifically and effectively at the appropriate time, and even the pump is damaged and the precious metal is damaged. Loss; (3) The resin is in a non-compact state when the anti-washing is alternated, resulting in the loss of precious metals; (4) labor and efficiency, and even manual misoperation.

Therefore, in order to overcome the deficiencies in the prior art, the object of the present invention is to provide a noble metal auto-activated ion exchange resin tower system.

In order to solve the above technical problems, a precious metal automatic activated ion exchange resin tower system of the present invention comprises a precious gold waste liquid storage tank, a positive washing pump, a discharge circuit and a plurality of resin towers, and the positive washing pump is connected to the resin tower through a positive washing tube. The flushing circuit, the resin tower flushing circuit is connected with the tops of the respective resin towers; the bottoms of the respective resin towers are respectively connected to the circulation loop through the pipelines, and the circulation loop is connected with the resin tower flushing loop, and further comprises a resin activator storage tank, which passes through the pipeline and the reverse The washing pump is connected, the backwashing pump is connected to the circulation circuit through the backwashing pipe, and the backwashing pipe and the positive washing pipe are respectively connected with two interfaces of the positive and reverse washing electric three-way valve, and the other interface of the positive and reverse washing electric three-way valve It is in communication with the discharge circuit, and the circulation circuit is also in communication with the backwash tube. The backwashing pump and the backwashing tube are provided, and the resin is sufficiently washed and activated by rinsing upward from the bottom of each resin column.

Further, a compressed air circuit is connected, and the compressed air circuit is connected to the bottom of each resin tower, and a compressed air regulating valve and a solenoid valve are further disposed on the compressed air circuit. The gas is disturbed by the impact of the resin from bottom to top, so that the resin is in a suspended state, and the resin surface retentate can be sufficiently eluted by the backwashing blisters.

Further, an electric valve is respectively arranged between the positive and reverse washing electric three-way valve and the positive washing tube and the back washing tube, and a backup circuit is provided around the two electric valve, the standby circuit and the positive washing tube and the back washing tube The discharge circuit is connected, and an electric valve is respectively arranged on the pipeline connecting the backup circuit to the positive wash pipe and the backwash pipe. When the positive and reverse washing electric three-way valve fails to work, adjust the opening and closing of the electric valve on the standby circuit, and the electric valve between the positive and reverse washing electric three-way valve and the positive washing tube and the back washing tube, then the standby can be started. The circuit bypasses the positive and negative wash electric three-way valve, and the front and back wash electric three-way valve can be repaired or replaced.

Further, a drain circuit electric three-way valve is arranged in parallel at the end of the discharge circuit, wherein two of the drainage cycle electric three-way valves are connected to the discharge circuit, and the other interface is connected to the precious gold waste storage tank through the return water pipe. By switching the drainage cycle electric three-way valve, it is possible to select whether the discharge circuit is connected to the precious metal waste storage tank or directly discharge the waste liquid.

Further, the discharge circuit and the return water pipe are connected through a pipeline provided with an electric valve, and can directly bypass the drainage cycle electric three-way valve, which can be used as a backup, and the drainage cycle electric three-way valve is connected with the discharge circuit and the return water pipeline. An electric valve is arranged at the interface, an electric valve is arranged at the end of the discharge circuit, and the flow direction of the waste liquid is controlled by setting the on and off of each electric valve.

Further, the resin tower flushing circuit comprises a plurality of pipelines connected in parallel and respectively provided with electric valve having the same number as the resin tower, and a plurality of pipelines are merged into one way at the inlet of each resin tower, and the circulation loop and the resin tower flushing loop are included therein. A pipeline is connected, and a portion of the circulation loop communicating with one of the pipelines is located between the two electric valves adjacent to the pipeline.

Further, the circulation circuit comprises a plurality of pipelines connected in parallel and respectively provided with the same number of electric valves as the resin tower, wherein one pipeline is connected with the resin tower flushing circuit, and a plurality of pipelines merge into one at the bottom of each resin tower and The bottoms of the respective resin columns are respectively connected.

Further, a regulating valve, an upper and lower limit flow meter switch, and a check valve are sequentially disposed on the positive washing pipe and the back washing pipe.

Further, a communication pipe is provided between the positive wash pump and the backwash pump, and a switching valve is provided on the communication pipe. When one of the pumps fails, switching the valve can replace the failed pump with another pump, and the failed pump can be replaced without affecting production.

Further, a check valve is provided on the discharge circuit to prevent the waste liquid from flowing back into the resin tower.

Beneficial effects: A noble metal auto-activated ion exchange resin tower system of the present invention can solve the problems of the prior art: (1) pretreatment of the new resin to fully regenerate it, and subsequent treatment of precious metals to increase the amount of resin exchange; (2) use of the resin After reducing the degree of pollution and increasing the exchange capacity of precious metal resin; (3) the precious metal is not lost when the positive and negative wash alternates; (4) using the automatic control processing workflow and principle, effective scientific management to replace the manual operation, thereby improving efficiency.

Compared with the prior art, this creation has the advantages that the new resin is pretreated and the flow rate is stable during use, and the degree of contamination of the resin is automatically removed, the efficiency of adsorbing precious gold is improved, and the amount of resin exchange is improved, thereby ensuring that the water is not discharged. Excessive. Because this creation does not require personnel operation, it greatly saves labor maintenance costs and equipment damage and precious gold loss due to misuse or poor maintenance. Because this creation does not cause excessive water discharge due to resin contamination, it can save new resin replacement frequency and save resin consumption. Because the creation adopts automatic control, the scientific instruction index can effectively adjust the positive and negative washing time, compressed air pressure and flow rate, backwash activation activator and estimated resin containing precious gold percentage and receiving time, etc. The precious gold-containing waste liquid has different parameter settings and controls.

The creation will be further explained below with reference to the accompanying drawings.

As shown in FIG. 3 and FIG. 4, a precious metal automatic activated ion exchange resin tower system comprises a precious gold waste liquid storage tank 1, a positive washing pump 5, a discharge circuit 61 and a plurality of resin towers, and the positive washing pump 5 is washed by the positive washing. The tube 9 is connected to the resin tower flushing circuit 7, and the resin tower flushing circuit 7 is connected to the top of each resin tower; the bottoms of the respective resin towers are respectively connected to the circulation loop 8 through a pipeline, and the circulation loop 8 is connected to the resin tower flushing circuit 7 and further includes resin activation. The agent storage tank 2 is connected to the backwashing pump 6 through a pipeline, the backwashing pump 6 is connected to the circulation loop 8 through the backwashing pipe 10, and the backwashing pipe 10 and the positive washing pipe 9 are respectively connected with the positive and reverse washing electric three-way valve 3 Two of the interfaces are connected, and the other interface of the positive and reverse wash electric three-way valve 3 is in communication with the discharge circuit 61, and the circulation circuit 8 is also in communication with the backwash pipe 10. The regulating valve 91, the upper and lower limit flow meter switch 93, the sampling port 92 and the check valve 94 are sequentially disposed on the positive washing pipe 9 in the flow direction of the liquid, and the regulating valve 101, the upper and lower limit flowmeters are sequentially disposed on the backwashing pipe 10 in the flow direction of the liquid. The switch 102, the sampling port 103, and the check valve 104. The communication pipes 64 and 52 are provided between the positive wash pump 5 and the backwash pump 6, and the switching valves are attached to the communication pipes 64 and 52. When one of the pumps fails, switching the valve can replace the failed pump with another pump, and the failed pump can be replaced without affecting production. A check valve 62 is provided on the discharge circuit 61 to prevent the waste liquid from flowing back into the resin tower. The backwashing pump 6 and the backwashing tube 10 are disposed, and flushing upward from the bottom of each resin column enables the resin to be sufficiently washed and activated. The system of the present invention further includes a compressed air circuit 51 that communicates with the bottom of each resin tower, and a compressed air regulating valve and a solenoid valve are also disposed on the compressed air circuit 51 for regulating the on and off of the compressed air and the gas flow rate. . The gas is disturbed by the impact of the resin from bottom to top, so that the resin is in a suspended state, and the resin surface retentate can be sufficiently eluted by the backwashing water. An electric valve 31 and an electric valve 32 are respectively disposed between the positive and reverse washing electric three-way valve 3 and the positive washing pipe 9 and the backwashing pipe 10, and a backup circuit 4 is provided around the two electric valve, and the standby circuit 4 and the positive circuit 4 are provided. The washing pipe 9, the backwashing pipe 10, and the discharge circuit 61 are in communication, and an electric valve 41 and an electric valve 32 are provided in the line connecting the backup circuit 4 to the positive washing pipe 9 and the backwashing pipe 10, respectively. When the positive and reverse washing electric three-way valve 3 fails to work, the opening and closing of each electric valve on the standby circuit 4, and the electric power between the positive and negative washing electric three-way valve 3 and the positive washing tube 9 and the back washing tube 10 are adjusted. The valve 31 and the electric valve 32 can start the backup circuit 4 and bypass the positive and reverse washing electric three-way valve 3. At this time, the front and back washing electric three-way valve 3 can be repaired or replaced. A drain circuit electric three-way valve 71 is disposed in parallel at the end of the exhaust circuit 61. Two of the interfaces of the drain circuit electric three-way valve 71 are connected to the discharge circuit 61, and the other interface is connected to the precious metal waste liquid storage tank 1 through the return water pipe 72. . By switching the drain cycle electric three-way valve 71, it is possible to select whether the discharge circuit 61 is connected to the gold-containing waste liquid storage tank 1, or whether the waste liquid is directly discharged. The discharge circuit 61 and the return water pipe 72 are connected by a pipe provided with the electric valve 73, and can directly bypass the drain cycle electric three-way valve 71, which can be used as a backup, and the drain cycle electric three-way valve 71 is connected to the discharge circuit 61. An electric valve 76 is disposed at the interface, an electric valve 75 is disposed at the interface of the drain circuit electric three-way valve 71 and the return water line 72, and an electric valve 74 is disposed at the end of the discharge circuit 61, and the electric break is controlled by setting the on and off of each electric valve. The flow of liquid. The resin tower flushing circuit 7 comprises a plurality of pipelines connected in parallel and each provided with the same number of electric valves as the resin tower, and a plurality of pipelines are integrated into one inlet at the inlet of each resin tower, and the circulation loop 8 and the resin tower flushing loop 7 are One of the pipelines is connected, and the portion of the circulation loop 8 communicating with one of the pipelines is located between the two electric valves adjacent to the pipeline. The circulation circuit 8 includes a plurality of pipelines connected in parallel and respectively provided with electric valve having the same number as the resin tower, wherein one pipeline is connected with the resin tower flushing circuit 7, and a plurality of pipelines are merged at the bottom of each resin tower and The bottoms of the respective resin columns are respectively connected.

The above novel content will be further explained below through specific embodiments.

This work is at work, mainly including the following workflow:

As shown in the flow direction indicated by the arrow in Fig. 4, the new resin pretreatment process in the resin tower is: using the resin activator storage tank 2 to install pure water, and the positive and reverse washing electric three-way valve 3 and the electric valve around it are switched to The electric valve 31, the electric valve 32 is opened, the electric valve 41, and the electric valve 42 are closed, the air source connected to the compressed air circuit 51 is activated, and compressed air is introduced into the resin tower A and the resin tower B for several seconds, and then the backwashing pump is started. 6 pumping resin activator storage tank 2 backwashing the resin layer in resin tower A and resin tower B, using the bubble principle to expand the resin rate of more than 90%, stop the input of compressed air for a few seconds and then backwash pump 6 Stop, at this time, the internal air can be drained with water, and then the pure gold-containing waste liquid storage tank 1 is used to install pure water. As shown by the arrows in Fig. 3 and the figure, the positive washing pump 5 draws the precious gold waste liquid. The pure water in the storage tank 1 is washing the resin layer in the resin tower A and the resin tower B, and during the period, the PLC is used to control the positive and reverse washing electric three-way valve 3 and the drainage cycle electric three-way valve 71. After the precious gold waste liquid storage tank 1 is circulated, the backwashing water is circulated into the resin activator storage tank 2 During the period when the backwashing flow rate exceeds the upper and lower limits, the upper and lower limit flowmeter switch 93 or the upper and lower limit flowmeter switch 102 alarms, and the backwashing is repeated 2-3 times until the water is clear, odorless, no fine resin, and the resin layer is dense. After entering the production adsorption gold ions.

As shown in Fig. 3, the normal production process: when the water level in the precious gold waste storage tank 1 reaches the upper limit of starting, the positive and reverse washing electric three-way valve 3 switches the washing position, that is, the electric valve 32 is opened, the electric valve 31 is opened, and the electric valve 31 is opened. The valve 41 and the electric valve 42 are closed, and the drain circuit electric three-way valve 71 is switched to the circulation position, that is, the electric valve 75, the electric valve 76 is opened, the electric valve 74, and the electric valve 73 are closed. After the above setting is completed, the washing pump 5 is started, and after the water in the precious gold waste storage tank 1 is withdrawn for a few seconds, the draining electric three-way valve 71 is switched to the waste water discharge position, that is, the electric valve 75 is closed, and the electric valve 76 is opened. The washing time can be adjusted to adsorb the precious metal ions. When the time reaches the set washing time, the washing pump 5 stops. As shown in FIG. 4, the front and back washing electric three-way valve 3 switches the backwashing position, that is, the electric valve 31, electric The valve 32 is opened, the electric valve 41 and the electric valve 42 are closed, and the drainage cycle electric three-way valve 71 is switched to the precious gold waste storage tank 1, that is, the electric valve 74, the electric valve 73 is closed, the electric valve 76, and the electric valve 75 are opened. At this time, the air source connected to the compressed air circuit 51 is started, and after the compressed air enters each resin tower for several seconds, the backwash pump 6 is started to pump the pure water in the resin activator storage tank 2 to backwash the resin layer in each resin tower for several seconds. The rear drain cycle electric three-way valve 71 is switched to the waste water discharge position, that is, switched to the electric valve 75, the electric valve 76 is opened, the electric valve 73, the electric valve 74 is closed, the backwashing time can be adjusted, and the solenoid valve of the compressed air circuit 51 is advanced by several seconds. Stop compression Air is introduced into each resin tower. At this time, the air inside each resin tower can be discharged by water. When the time reaches the set backwashing time, the backwashing pump 6 stops. When the water level in the precious gold waste storage tank 1 does not reach the lower limit of the stop. Repeat normal washing production. When the water level in the gold-containing waste liquid storage tank 1 reaches the lower limit of stopping, the system stops working and stands by. The next time the water level reaches the starting limit, the previous time control action and parameters are continued. When the flow rate is lower, the upper and lower limit flow meter switch 93 or the upper and lower limit flow meter switch 102 alarms.

This creation uses two sinks: a precious gold waste storage tank 1 and a resin activator storage tank 2, which can be used as a sink for new resin pretreatment, which automatically activates the resin and prevents the loss of precious gold during normal production, compared with the conventional technology. Compared with the conventional technology, a storage tank containing precious gold waste liquid is used, and the resin cannot be automatically pretreated and the resin cannot be activated during normal production, thereby causing the loss of precious gold.

This creation uses a combination of a positive wash pump 5 and a backwash pump 6. In normal production, the positive wash pump is used for the positive wash process, the back wash pump is used for the backwash process, and the automatic pump is used instead of the standby. Knowing technology uses only one positive washing pump, which can normally produce positive washing, but it needs manual switching valve backwashing, and there is no standby pump. When the positive washing pump is damaged or faulty, there is no substitute, which affects the work progress.

The creation adopts a compressed air structure, uses a compressed air circuit 51 to connect the compressed air source and two resin towers, and can be automatically set to cooperate with the backwashing pump 6 to form a bubble principle to reduce the degree of contamination of the resin, and to ensure stable flow increase during the positive washing. The efficiency of the precious gold and the increase of the resin exchange amount ensure that the effluent does not exceed the standard, and the original technology does not have this function.

The resin tower flushing circuit 7 comprises a plurality of pipelines connected in parallel and each having the same number of electric valves as the resin tower. The number of pipelines can be adjusted according to the number of resin towers, and the electric valves on the respective pipelines are adjusted. The opening and closing can select the flow direction of the liquid during the washing or backwashing, such as whether the liquid is passed through each resin column in sequence or through a plurality of resin towers at the same time. Under normal circumstances, only one of the pipelines is started, and the electric valves on the other pipelines are closed. These pipelines are used as spare pipelines. When there is a problem with the common pipelines, the backup pipeline can be started by switching the electric valve. Maintenance of damaged pipelines does not affect normal production.

The circulation circuit 8 includes a plurality of pipelines connected in parallel and respectively provided with electric valve having the same number as the resin tower, wherein one pipeline is connected with the resin tower flushing circuit 7, and a plurality of pipelines are merged at the bottom of each resin tower and The bottoms of the respective resin columns are respectively connected. The function of multiple pipelines is also standby. By switching the opening and closing of the electric valve on each pipeline, different paths are selected to realize different washing modes for the resin tower.

As in the present embodiment, two resin columns of the resin column A and the resin column B are used, and then the resin column A to the resin column B are sequentially washed, and the resin column B to the resin column A are sequentially backwashed. The tower flushing circuit 7 and the electric valves 13, 15, 22, 26 on the circulation circuit 8 are opened, and the electric valves 11, 12, 14, 16, 21, 23, 24, 25 are all closed, and the washing pump 5 is being washed. When starting and backwashing, the positive washing pump 5 is stopped, the backwashing pump 6 is started to operate, and the liquid sequentially flows through the above-opened electric valve, and sequentially passes through the resin tower A and the resin tower B.

When it is necessary to separately rinse a resin tower, if the resin tower A is separately washed, the electric valves 11, 14 are opened, the other electric valves are closed, and the backwashing pump 6 is started. If the resin tower B is separately washed, the electric valve 21 is opened. , 24, close other electric valves, start the backwash pump 6, you can. The above-mentioned electric valve is not unique in its opening and closing arrangement, and different flushing modes can be realized by opening and closing combinations between different electric valves.

The actual case comparison shows: the conventional technology resin tower system uses 65T of total water per day, the influent gold concentration is 0.9ppm, the effluent is more than 0.3ppm, and the material is required to be received. The maintenance period of the personnel is 3 times per week, 2 people/ Times, 8 hours/time, this creation is once a week, 1 person/time, 4 hours/time, the original technology is 48 hours per week, this creation is 4 hours per week, saving manpower 91.6%, saving manpower and traffic every week. The total cost of labor for weekly meals is RMB 1,300.

Receipt cycle and gold: The effluent is greater than 0.3ppm, and the original technical total resin is 90KG. The receipt of gold is 0.4% every 20 days, and the monthly gold is 540g. The original input of resin 240KG has not been 2.5 months. The receipt of gold contains more than 0.5625%, the resin of 2.5 months saves more than 97.5KG (saving RMB1950 yuan), the gold content increases by more than 40%, and the resin material fee is saved by more than RMB195 per week. The absorption of resin gold is increased by more than 40%.

Abnormal equipment: The original technology damages one pump (RMB 1800 yuan) every 1.5 months, and the monthly water penalty is RMB 750. The original investment of this creation has not occurred for 2.5 months, and the annual abnormal cost of equipment is more than RMB 1050.

More than the above savings of more than RMB 10,180 per month, the income increased by more than 40%.

The above description and description are only illustrative of the preferred embodiments of the present invention, and those having ordinary skill in the art may make other modifications in accordance with the scope of the patent application as defined below and the above description, but such modifications are still It is the creative spirit of this creation and is within the scope of this creation.

1‧‧‧ precious gold waste storage tank

10‧‧‧Anti-wash tube

101‧‧‧ regulating valve

102, 93‧‧‧ Flowmeter switch

103‧‧‧Sampling port

104, 62, 63, 94‧‧‧ check valves

11,12,13,14,15,16,21,22,23,24,25,26,31,32,41,42,73,74,75,76‧‧‧ electric valve

11a, 13a, 15a, 21a, 22a, 24a, 26a‧‧‧ valves

2‧‧‧Resin activator storage tank

3‧‧‧Backwashing electric tees valve

4‧‧‧Alternate loop

5‧‧‧washing pump

51‧‧‧Compressed air circuit

52, 64‧‧‧Connected pipes

53‧‧‧ gas flow meter

6‧‧‧Backwash pump

61‧‧‧Drainage circuit

7‧‧‧ resin tower flushing circuit

71‧‧‧Draining cycle electric three-way valve

72‧‧‧Water return pipeline

8‧‧‧Circuit loop

9‧‧‧Washing the tube

91‧‧‧Regulator

92‧‧‧Sampling port

A‧‧‧ to resin tower

B‧‧‧ resin tower

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view showing a process of washing a resin tower according to a prior art; the arrows in the figure show the flow direction of the liquid during the washing; Fig. 2 is a schematic view of the backwashing process of the resin tower of the prior art, and the arrow in the figure shows the flow direction of the liquid during backwashing; Fig. 3 is a schematic diagram of the process of the main washing process, wherein the arrow in the figure shows the liquid flow direction during the washing; Fig. 4 is a schematic view of the backwashing process of the creation, the arrows in the figure show the liquid flow direction and the air of the compressed air pipeline during backwashing. Flow direction

1‧‧‧ precious gold waste storage tank

10‧‧‧Anti-wash tube

101‧‧‧ regulating valve

102, 93‧‧‧ Flowmeter switch

103‧‧‧Sampling port

104, 62, 63, 94‧‧‧ check valves

11,12,13,14,15,16,21,22,23,24,25,26,31,32,41,42,73,74,75,76‧‧‧ electric valve

2‧‧‧Resin activator storage tank

3‧‧‧Backwashing electric three-way valve

4‧‧‧Alternate loop

5‧‧‧washing pump

51‧‧‧Compressed air circuit

52, 64‧‧‧Connected pipes

53‧‧‧ gas flow meter

6‧‧‧Backwash pump

61‧‧‧Drainage circuit

7‧‧‧ resin tower flushing circuit

71‧‧‧Draining cycle electric three-way valve

72‧‧‧Water return pipeline

8‧‧‧Circuit loop

9‧‧‧Washing the tube

91‧‧‧Regulator

92‧‧‧Sampling port

A‧‧‧ to resin tower

B‧‧‧ resin tower

Claims (10)

A precious metal automatic activated ion exchange resin tower system, comprising a precious gold waste liquid storage tank, a positive washing pump, a discharge circuit and a plurality of resin towers, the positive washing pump is connected to the resin tower flushing circuit through the positive washing tube, the resin tower flushing circuit and each The top of the resin tower is connected; the bottom of each resin tower is connected to the circulation loop through a pipeline, and the circulation loop is connected with the resin tower flushing loop, and is characterized in that: a resin activator storage tank is further connected, and the pipeline is connected with the backwashing pump through the pipeline, The washing pump is connected to the circulation circuit through the backwashing pipe, and the backwashing pipe and the positive washing pipe are respectively connected with two interfaces of the positive and reverse washing electric three-way valve, and the other interface of the positive and negative washing electric three-way valve is connected with the discharge circuit. The circulation loop is also connected to the backwash tube. The noble metal auto-activated ion exchange resin column system according to claim 1, further comprising a compressed air circuit, the compressed air circuit is connected to the bottom of each resin tower, and a compressed air regulating valve and a solenoid valve are further disposed on the compressed air circuit. The noble metal auto-activated ion exchange resin tower system according to claim 1, wherein an electric valve is respectively disposed between the positive and reverse washing electric three-way valve and the positive washing tube and the back washing tube, and the periphery of the two electric valves is further A backup circuit is provided, and the backup circuit is connected with the positive wash pipe, the backwash pipe and the discharge circuit, and the electric circuit is respectively arranged on the pipeline connecting the backup circuit and the positive wash pipe and the back wash pipe. The noble metal auto-activated ion exchange resin tower system according to claim 1, wherein a discharge circulation electric three-way valve is arranged in parallel at the end of the discharge circuit, and two of the drainage cycle electric three-way valves are connected to the discharge circuit, and the other interface is passed back. The water pipeline is connected to a storage tank containing precious gold waste liquid. The noble metal auto-activated ion exchange resin column system according to claim 4, wherein the discharge circuit and the return water pipe are connected through a pipe provided with an electric valve, and the drainage cycle electric three-way valve is connected to the discharge circuit and the return water pipe. An electric valve is provided at the interface, and an electric valve is provided at the end of the discharge circuit. The noble metal auto-activated ion exchange resin column system according to claim 1, wherein the resin column flushing circuit comprises a plurality of pipelines connected in parallel and each having the same number of electric valves as the resin tower, and a plurality of pipelines in each resin tower The upper entrance merges into one way, the circulation loop and the resin tower flush circuit One of the pipelines is connected, and the portion of the circulation loop that communicates with one of the pipelines is located between the two electric valves adjacent to the pipeline. The noble metal auto-activated ion exchange resin column system according to claim 1, wherein the circulation circuit comprises a plurality of pipelines connected in parallel and each having the same number of electric valves as the resin tower, wherein one of the pipelines is connected to the resin tower flushing circuit. A plurality of pipelines are merged at the bottom of each resin tower and communicated with the bottoms of the respective resin towers. The noble metal auto-activated ion exchange resin tower system according to claim 1, wherein a regulating valve, an upper and lower limit flow meter switch, and a check valve are sequentially disposed on the positive washing pipe and the back washing pipe. The noble metal auto-activated ion exchange resin column system according to claim 1, wherein a communication pipe is provided between the positive wash pump and the backwash pump, and a switching valve is provided on the communication pipe. The noble metal auto-activated ion exchange resin column system of claim 1, wherein a check valve is provided on the discharge circuit.