MISP metal solution resource recycling system and operation method thereof

Abstract

The invention relates to an MISP metal solution resource recycling system and an operation method thereof, and the MISP metal solution resource recycling system comprises a heavy metal solution tank, an activated carbon filtering device, an ion exchange filtering device, a water recycling tank, a metal-containing acid liquor tank, a preparation device, a balance tank, a tubular membrane filtering device and a plate and frame filter press, the operation method of the MISP metal solution resource recycling system comprises the following steps of activated carbon filtration, ion exchange filtration, desorption, modulation, tubular membrane filtration and filter pressing dehydration, so that metal enrichment can be obtained, valuable metal in water can be recycled in a simple drying mode, the filtrate water body can be recycled, and the cost is reduced. The device has the advantages of simplicity in operation, convenience in equipment maintenance, lower operation cost and the like.

Claims

1. A MISP metal solution resource recovery system, comprising: a heavy metal solution tank for loading heavy metal solution; an activated carbon filter device, connected to the heavy metal solution tank, for removing impurities in the heavy metal solution; an ion exchange filter device, connected to the activated carbon filter device, the ion exchange filter device comprising a plurality of ion exchange resin modules or chelating resin modules, the ion exchange resin modules or chelating resin modules being connected in series with each other, the ion exchange filter device being used for adsorbing and filtering cations and anions or metal ions in the heavy metal solution, so that the heavy metal solution becomes deionized water or purified water; a water recovery tank, connected to the ion exchange filter device, for recovering deionized water or purified water adsorbed and filtered by the ion exchange filter device; a metal-containing acid liquid tank, connected to the ion exchange filter device, for receiving the metal-containing acid liquid formed by the metal components extracted from the ion exchange filter by acid liquid flushing; a modulation device, connected to the metal-containing acid liquid tank, for receiving the metal-containing acid liquid in the metal-containing acid liquid tank and adding an alkaline desorbent to modulate the metal-containing alkaline liquid; a balancing tank, connected to the adjusting device, for receiving the metal-containing alkaline liquid conditioned by the conditioning device; a tubular membrane filtration device, comprising at least one tubular membrane filtration module, the tubular membrane filtration device being connected to the balancing tank and configured to filter the metal-containing alkaline liquid to form purified water and concentrated waste liquid, the purified water being discharged to the outside, and the concentrated waste liquid being returned to the balancing tank; and A plate-frame filter press is connected to the balancing tank and is used to receive the concentrated waste liquid balanced by the balancing tank for pressure filtration and dehydration to form metal-enriched products.

2. The MISP metal solution resource recovery system according to claim 1, wherein the tubular membrane filtration module comprises an outer casing and a plurality of tubular membranes arranged inside the outer casing, and the tubular membrane is made of an outer support layer, a middle reinforcement layer and an inner filtration layer.

3. The MISP metal solution resource recovery system according to claim 1, wherein the acidic desorbent is sulfuric acid or hydrochloric acid, and the alkaline desorbent is liquid alkali (sodium hydroxide), sodium carbonate, sodium phosphate, sodium sulfide, heavy capture agent or potassium hydroxide.

4. An operation method of a MISP metal solution resource recovery system, using the MISP metal solution resource recovery system according to any one of claims 1 to 3, comprising the following steps: (a1) activated carbon filtration, using an activated carbon filtration device to remove impurities in the heavy metal solution; (a2) ion exchange filtration, using an ion exchange filtration device to absorb and filter cations and anions or metal ions in the heavy metal solution, and recovering the deionized water or purified water formed after the heavy metal solution is absorbed and filtered; (a3) desorption, using catalytic reduction technology to recover the cations and anions or metal ions adsorbed by the ion exchange filter device to form a metal-containing acid solution that flows into a metal-containing acid solution tank; (a4) modulation, adding an alkaline desorbing agent to the metal-containing acid solution to form a metal-containing alkaline liquid, and flowing the liquid to a balancing tank; (a5) tubular membrane filtration, using a tubular membrane filtration device to filter the metal-containing alkaline liquid to form purified water and concentrated waste liquid, the purified water is discharged and recovered, and the concentrated waste liquid is returned to the balancing tank; (a6) filtration and dehydration, wherein the concentrated waste liquid balanced in the balance tank is filtered and dehydrated through a plate and frame filter press to form a metal-enriched product.

5. A MISP metal solution resource recovery system, comprising: a heavy metal solution tank for loading heavy metal solution; an activated carbon filter device, connected to the heavy metal solution tank, for adsorbing and removing impurities in the heavy metal solution; an ion exchange filter device, connected to the activated carbon filter device, the ion exchange filter device is used for adsorbing and filtering cations and anions or metal ions in the heavy metal solution; an acidic desorbent tank, connected to the ion exchange filter device, for loading the acidic desorbent and automatically transferring the acidic desorbent to the ion exchange filter device according to settings; An alkaline desorbent tank is connected to the ion exchange filter device and is used to load the alkaline desorbent. The alkaline desorbent is automatically transferred to the ion exchange filter device according to the setting. The ion exchange filter device is flushed with the acidic desorbent or the acidic desorbent and the alkaline desorbent to extract the metal components to form a metal-containing acid solution; a metal-containing acid solution tank, connected to the ion exchange filter device, for receiving the metal-containing acid solution formed by flushing out the metal components from the ion exchange filter device; A modulation device, comprising a reaction tank and a balancing tank, wherein a partition is provided between the reaction tank and the balancing tank, and the reaction tank and the balancing tank are separated by the partition. The reaction tank is connected with the acidic desorbent tank, the alkaline desorbent tank and the metal-containing acid liquid tank, and is used to receive the metal-containing acid liquid in the metal-containing acid liquid tank, the acidic desorbent in the acidic desorbent tank and the alkaline desorbent in the alkaline desorbent tank, and modulate to form a metal-containing alkaline liquid or a metal-containing acidic liquid. When the water level of the metal-containing alkaline liquid or the metal-containing acidic liquid in the reaction tank is higher than the partition, the metal-containing alkaline liquid or the metal-containing acidic liquid overflows into the balancing tank; A tubular membrane filtration device, comprising at least one tubular membrane filtration module, the tubular membrane filtration device is connected to the balance tank of the modulation device, and is used to filter the metal-containing alkaline liquid to form a purified water and a concentrated waste liquid, the purified water is discharged to the outside, the concentrated waste liquid is returned to the balance tank of the modulation device, and the metal-containing acidic liquid can be controlled to flow to the tubular membrane filtration device to flush and remove the obstruction in the tubular membrane filtration module, and automatically clean the tubular membrane filtration module; and A plate-and-frame filter press is connected to the balancing tank and is used to receive the concentrated waste liquid formed by balancing in the balancing tank and perform pressure filtration and dehydration to form metal-enriched products.

6. The MISP metal solution resource recovery system according to claim 5, wherein the acidic desorbent is sulfuric acid or hydrochloric acid, and the alkaline desorbent is liquid alkali (sodium hydroxide), sodium carbonate, sodium phosphate, sodium sulfide, heavy capture agent or potassium hydroxide.

7. The MISP metal solution resource recovery system according to claim 5, wherein the tubular membrane filtration module comprises an outer casing and a plurality of tubular membranes arranged inside the outer casing, and the tubular membrane is made of an outer support layer, a middle reinforcement layer and an inner filtration layer.

8. An operation method of a MISP metal solution resource recovery system, using the MISP metal solution resource recovery system according to any one of claims 5 to 7, comprising the following steps: (b1) activated carbon filtration, using an activated carbon filtration device to remove impurities in the heavy metal solution; (b2) ion exchange filtration, using an ion exchange filtration device to absorb and filter cations and anions or metal ions in the heavy metal solution; (b3) desorption, automatically transferring the acidic desorbent and the alkaline desorbent to the ion exchange filter device according to the setting, using the catalytic reduction technology, flushing the ion exchange filter device with the acidic desorbent or the acidic desorbent and the alkaline desorbent to remove the cations and anions or metal ions adsorbed on the ion exchange filter device, forming a metal-containing acid solution that flows to the metal-containing acid solution tank; (b4) modulation, transferring the metal-containing acid liquid in the metal-containing acid liquid tank to the reaction tank of the modulation device, cooperating with transferring the alkaline desorbent in the alkaline desorbent tank to the reaction tank of the modulation device, modulating the metal-containing acid liquid and the alkaline desorbent in the reaction tank to form a metal-containing alkaline liquid, when the water level of the metal-containing alkaline liquid in the reaction tank is higher than the partition, the metal-containing alkaline liquid in the reaction tank overflows into the balancing tank, or controlling the acidic desorbent in the acidic desorbent tank and the alkaline desorbent in the alkaline desorbent tank to be transferred to the reaction tank of the modulation device, modulating the acidic desorbent and the alkaline desorbent in the reaction tank to form a metal-containing acidic liquid, when the water level of the metal-containing acidic liquid in the reaction tank is higher than the partition, the metal-containing acidic liquid in the reaction tank overflows into the balancing tank; (b5) tubular membrane filtration, using a tubular membrane filtration device to receive the metal-containing alkaline liquid in the balancing tank, filtering the metal-containing alkaline liquid to form purified water and concentrated waste liquid, the purified water is discharged for recovery, and the concentrated waste liquid is refluxed to the balancing tank of the modulation device. When blockage occurs inside the tubular membrane filtration module, the acidic desorbent in the acidic desorbent tank and the alkaline desorbent in the alkaline desorbent tank flow to the reaction tank for modulation to form a metal-containing acidic liquid, the modulated metal-containing acidic liquid overflows from the reaction tank to the balancing tank, and then flows from the balancing tank to the tubular membrane filtration device to flush and remove the blockage, thereby automatically cleaning the tubular membrane filtration module; (b6) filtration and dehydration, wherein the concentrated waste liquid balanced in the balancing tank is filtered and dehydrated through a plate and frame filter press to form a metal-enriched product.

9. The operating method of the MISP metal solution resource recovery system according to claim 8, wherein when the metal-containing acid solution and the alkaline desorbent are modulated in the reaction tank to form a metal-containing alkaline liquid, through pH detection, as long as the pH value of the metal-containing alkaline liquid does not reach a set value, the alkaline desorbent is automatically added until the pH value of the metal-containing alkaline liquid reaches the set value, and the set value is 8-11.5.

Images