CN111926178B - Device and method for cracking organic matters in zinc sulfate solution - Google Patents

Abstract

The invention discloses a device and method for cracking organic matter in zinc sulfate solution, comprising a water inlet tank, an inlet pump, a multi-stage reaction kettle device, an ozone generator, a tail gas treatment device and a liquid storage tank. The zinc sulfate stock solution water inlet of the first-stage reactor device is connected through a liquid pipeline, and the multi-stage reactor device is arranged in steps, and the multi-stage reactor device is provided with an ultrasonic generator and a stirring device. The method is as follows: the zinc sulfate solution containing organic substances is successively passed through a multi-stage reactor device, and then cracked and removed step by step under the action of ultrasonic waves and ozone. Under the condition of not changing the existing zinc hydrometallurgy process, the invention effectively cracks the organic matter in the zinc sulfate solution through ultrasonic wave and ozone oxidation, so as to achieve the purpose of improving the quality of zinc products and improving the electric efficiency. Meanwhile, the invention has the advantages of low cost and simple operation, and can effectively remove the organic matter in the zinc sulfate solution in a short time.

Description

A device and method for cracking organic matter in zinc sulfate solution

technical field

The invention belongs to the field of non-ferrous metallurgy, and in particular relates to a device and a method for cracking organic matter in a zinc sulfate solution.

Background technique

Zinc sulfate solution is generally used as a raw material for zinc hydrometallurgy. The zinc hydrometallurgy process consists of three steps: zinc calcine leaching, leachate purification and electrolytic deposition. In the process of zinc hydrometallurgy, some organic pollutants often float in the zinc sulfate raw material used, which seriously affects the zinc electrowinning process and causes the consequence of low electricity efficiency. With the increasing social demand for zinc ingots, how to effectively remove organic matter in zinc sulfate solution to improve the quality of zinc products and improve electrical efficiency has become an urgent technical problem to be solved.

The existing methods for removing organic matter in zinc sulfate solution mainly include: physical sedimentation, activated carbon adsorption, liquid membrane filtration method and oxidation method, wherein the oxidation method has low cost, simple process and strong environmental protection. The ozone oxidation method is used in the present invention as a typical representative of the oxidation method, but because ozone has limitations such as low solubility, poor ozone utilization rate, and long reaction time, the present invention provides an ultrasonic enhanced oxidation process, thereby achieving a comprehensive improvement in ozone oxidation. purpose of ability.

The existing methods for removing organic matter in zinc sulfate solution mainly include: physical sedimentation, activated carbon adsorption, liquid membrane filtration method and oxidation method, wherein the oxidation method has low cost, simple process and strong environmental protection. Among them, the oxidation method is widely used, such as the Chinese patent, a method for removing arsenic iron and organic matter from the zinc sulfate solution after the zinc oxide fume leaching solution precipitates germanium, the application number is 201911178781.2, the application date is 2019.11.27, the The invention uses potassium permanganate as an oxidant to participate in the reaction, which not only has high cost, but also easily introduces new elements into the raw materials, which is not conducive to industrialized production. At the same time, the required temperature in the reactor is too high, and the equipment requirements are extremely strict. Finally, the effective range of PH value is narrow and difficult to control, which is also a problem that cannot be ignored. The ozone oxidation method is a typical representative of the oxidation method, and it is also involved in the process of removing the organic matter in the zinc sulfate solution. However, due to the limitation of low solubility of ozone, the prior art has poor ozone utilization rate when processing the zinc sulfate solution. It has the disadvantages of complex structure and long reaction time.

SUMMARY OF THE INVENTION

In view of the above problems, the first object of the present invention is to provide a device for cracking organic matter in zinc sulfate solution, and another object of the present invention is to provide a method for cracking organic matter in zinc sulfate solution.

The first object of the present invention is achieved in this way, a device for cracking organic matter in zinc sulfate solution, including a water inlet tank, an inlet water pump, a multi-stage reactor device, an ozone generator, a tail gas treatment device and a liquid storage tank. The pool is connected with the zinc sulfate stock solution water inlet of the first-stage reactor device through the liquid pipeline through the inlet pump. The multi-stage reactor device is arranged in steps, and the liquid discharge port and the liquid inlet of the adjacent reactor device are connected through the liquid pipeline. The ozone generator is connected with the air inlets of the reactors at all levels through the first gas pipeline, and the tail gas treatment device is connected with the exhaust ports of the reactors at all levels through the second gas pipeline; the multistage reactor device is provided with Ultrasonic generator and stirring device, the reaction liquid outlet of the last stage reactor device is connected with the liquid storage tank through the liquid pipeline.

Another object of the present invention of the ozone is achieved in this way, a method for cracking organic matter in zinc sulfate solution adopts the device to carry out cracking of organic matter, and specifically comprises the following steps:

(1) Add the zinc sulfate solution containing organic matter into the primary reactor device from the water inlet of the zinc sulfate solution, and at the same time, pass ozone into the primary reactor device, and complete the preliminary oxidative cracking of organic matter under the action of ultrasonic waves and stirring, The reaction time is controlled for 5-30 minutes to obtain a first-order reaction solution.

(2) The first-stage reaction solution is added to the second-stage reaction kettle device through the water inlet, and ozone is introduced into the second-stage reaction kettle device at the same time, and further organic matter oxidative cracking is carried out under the action of ultrasonic waves and stirring, and the reaction time is controlled to 5 -30 minutes to obtain secondary reaction solution.

(3) The secondary reaction solution is added to the tertiary reactor device, and ozone is introduced into the tertiary reactor device at the same time, and the residual organic matter is completely oxidized and cracked under the action of ultrasonic waves and stirring, and the reaction time is controlled to 5-30 The target solution is obtained in minutes.

(4) After the reaction is completed, the target solution is discharged from the water outlet of the zinc sulfate solution, and the excess ozone and tail gas enter the tail gas treatment device for treatment.

The beneficial effects of the present invention are as follows: the present invention can effectively crack the organic matter in the zinc sulfate solution through ultrasonic wave and ozone oxidation without changing the existing zinc hydrometallurgy process, so as to improve the quality of zinc products and improve the electricity At the same time, the invention has low cost and simple operation, and can effectively remove the organic matter in the zinc sulfate solution in a short time;

In the present invention, the multi-stage reaction kettles in the cracking device are arranged in steps, the reaction time and ultrasonic power decrease with the number of reaction stages, and the first reaction liquid in the first-stage reaction kettle device enters the second reaction kettle device along the liquid pipeline for further In the cracking reaction, the obtained second reaction solution enters the third reactor device for further cracking reaction of residual organic matter...until the organic matter is completely cracked and removed. The method has high cracking efficiency of organic matter and can completely crack organic matter. The gradient cracking of organic matter in the multi-stage reactor device can effectively increase the reaction contact area and improve the efficiency. The reaction time and ultrasonic power used by each reactor device decrease with the number of reaction stages. The total energy consumption is lower than the energy consumption of the complete reaction in the first-stage reactor device;

In addition, the invention overcomes the problem of low solubility of ozone and is difficult to react with the solution through the enhanced cracking effect and stirring function of ultrasonic waves in the reactor device, and is conducive to the sufficient reaction of ozone and organic matter in the zinc sulfate solution.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the device of cracking organic matter in zinc sulfate solution of the present invention;

1—water inlet tank, 2—inlet water pump, 3—multistage reactor device, 31—first stage reactor device, 32—secondary reactor device, 33—three stage reactor device, 311—ultrasonic generator, 312— Stirring device, 4-ozone generator, 5-first gas pipeline, 6-gas flow valve, 7-liquid flow control valve, 8-exhaust gas back pressure valve, 9-exhaust gas treatment device, 10-second gas pipeline, 70 - Reservoir.

Detailed ways

The present invention is further described below in conjunction with the examples, but the present invention is not limited in any way, and any transformation or replacement made based on the teachings of the present invention belongs to the protection scope of the present invention.

A device of the present invention for cracking organic matter in zinc sulfate solution, as shown in FIG. 1 , includes a water inlet tank 1, an inlet water pump 2, a multi-stage reactor device 3, an ozone generator 4, a tail gas treatment device 9 and a liquid storage tank 70, The water inlet pool 1 is connected with the zinc sulfate stock solution water inlet of the first-stage reactor device 31 through the liquid pipeline through the inlet pump 2, and the multi-stage reactor device 3 is arranged in steps, and the liquid outlet and the liquid inlet of the adjacent reactor device are They are connected by liquid pipelines, the ozone generator 4 is connected with the air inlets of the reactors at all levels through the first gas pipeline 5, and the tail gas treatment device 9 is connected with the exhaust openings of the reactors at all levels through the second gas pipeline 10. ; The multi-stage reactor device 3 is provided with an ultrasonic generator 311 and a stirring device 312, and the liquid outlet of the last-stage reactor device is connected to the liquid storage tank 70 through a liquid pipeline.

The air inlet of the ozone is arranged at the lower part or the bottom of the multistage reaction kettle device 3, so that the ozone is better dissolved in the solution to carry out oxidation; the first ozone generator 4 and the multistage reaction kettle device 3 are A gas flow valve 6 is provided between the gas pipelines 5 for controlling the speed at which the ozone flows into the multistage reaction device 3 to control the pressure in the multistage reactor device 3; A tail gas back pressure valve 8 is arranged between the two gas pipelines 10 to control the speed and flow of the tail gas discharge and ensure the safety of the exhaust gas.

The liquid pipeline is provided with a liquid flow control valve 7 for controlling the flow rate of the zinc sulfate solution.

The stirring device 312 is a stirring paddle.

The liquid inlets are all provided with a filter structure, and the filter structure is a filter or an ultrafiltration membrane, which is used to filter the solid particulate matter in the zinc sulfate solution.

The multi-stage reactor includes a first-stage reactor device 31 , a second-stage reactor device 32 and a third-stage reactor device 33 .

A method for cracking organic matter in zinc sulfate solution of the present invention specifically comprises the following steps:

(1) The zinc sulfate solution containing organic matter is added to the first-stage reactor device 31 from the zinc sulfate solution water inlet, and the first-stage reactor device 31 is fed with ozone at the same time, and the preliminary organic matter oxidation is completed under the action of ultrasonic waves and stirring. cracking, controlling the reaction time for 5-30 minutes to obtain a first-level reaction solution.

(2) The first-stage reaction solution is added to the second-stage reactor device 32 through the water inlet, and at the same time, the second-stage reactor device is fed with ozone, and further organic matter oxidative cracking is carried out under the action of ultrasonic waves and stirring, and the reaction time is controlled. 5-30 minutes to obtain a secondary reaction solution.

(3) The secondary reaction solution is added to the tertiary reactor device 33, while the tertiary reactor device 33 is fed with ozone, and the residual organic matter is completely oxidized and cracked under the effect of ultrasonic waves and stirring, and the reaction time is controlled to 5 - The target solution is obtained after 30 minutes.

(4) After the reaction is completed, the target solution is discharged from the water outlet of the zinc sulfate solution, and the excess ozone and tail gas enter the tail gas treatment device 9 for treatment.

In the step 1, the pH value of the zinc sulfate solution is 2.0-6.0, and the concentration of organic matter in the zinc sulfate solution is 200-900 mg/L.

In the step 3, the concentration range of the ozone used is: 70-100%.

Reaction time in described step 3＜reaction time in step 2＜reaction time in step 1.

The stirring rate is 100-800 revolutions per minute.

In the step 1, the power range of the ultrasonic wave is: 1-1.5 kW.

In the step 2, the power range of the ultrasonic wave is: 0.5-1 kW.

In the step 3, the power range of the ultrasonic wave is: 0.1-0.5 kW.

The present invention will be further described below in conjunction with the examples.

Example 1

A method for cracking organic matter in a zinc sulfate solution, specifically comprising the following steps: adding a zinc sulfate solution with an organic matter concentration of 200 mg/L and a pH value of 2.0 to a first-stage reactor device 31 after being filtered through a filter from a zinc sulfate solution water inlet At the same time, the first-level reaction kettle device 31 is fed into ozone with a concentration of 70%, and the first-level organic matter oxidative cracking is completed under the action of ultrasonic waves with a power of 1 kW and agitation with a stirring rate of 100 rpm, and the reaction time is controlled. 10 minutes. The fully reacted solution in the primary reactor device 31 is added to the secondary reactor device 32 through the water inlet, while the secondary reactor device 32 is fed with ozone with a concentration of 70%, and the power is 0.5 kW of ultrasonic and The oxidative cracking of the secondary organic matter was completed under the action of stirring with a stirring rate in the range of 100 revolutions per minute, and the reaction time was controlled for 5 minutes. The solution that reacts completely in the secondary reactor device 32 is added to the tertiary reactor device 33 through the water inlet, and simultaneously the tertiary reactor device 33 is passed into the ozone with a concentration of 70%, and the ultrasonic wave of 0.1 kW is in the power range. The oxidative cracking of tertiary organic matter is completed under the action of stirring with a stirring rate in the range of 100 revolutions per minute, and the reaction time is controlled for 5 minutes. After the reaction finishes, the zinc sulfate solution of the complete cracking of the organic matter and the excess ozone are discharged from the zinc sulfate solution water outlet and the tail gas discharge port respectively, the zinc sulfate solution of the complete cracking of the organic matter enters the liquid storage tank 70, and the ozone directly enters the tail gas treatment device 9. middle.

Example 2

A method for cracking organic matter in a zinc sulfate solution, specifically comprising the following steps: adding a zinc sulfate solution with an organic concentration of 300 mg/L and a pH value of 3.0 to a first-stage reactor device 31 after being filtered through a filter from a zinc sulfate solution water inlet At the same time, the first-level reaction kettle device 31 is fed into ozone with a concentration of 70%, and the first-level organic matter oxidative cracking is completed under the action of ultrasonic waves with a power of 1.1 kW and a stirring speed of 200 rev/min, and the reaction time is controlled for 10 minutes. minute. The fully reacted solution in the first-level reactor device 31 is added to the second-level reactor device 32 through the water inlet, while the second-level reactor device 32 is passed into the ozone with a concentration of 70%, and the ultrasonic wave of 0.6 kW is in the power range. The oxidative cracking of secondary organics is completed under the action of stirring with a stirring rate in the range of 200 revolutions per minute, and the reaction time is controlled for 17 minutes. The fully reacted solution in the secondary reactor device 32 is added to the tertiary reactor device 33 through the water inlet, while the tertiary reactor device 33 is passed into the ozone with a concentration range of 70%, and the power is the ultrasonic wave of 0.2 kW. Under the action of stirring at a stirring rate of 200 revolutions per minute, the oxidative cracking of the third-stage organic matter was completed, and the reaction time was controlled for 12 minutes. After the reaction, the solution and excess ozone are discharged from the zinc sulfate solution water outlet and the tail gas discharge port respectively, the zinc sulfate solution with completely cracked organic matter enters the liquid storage tank 70, and the ozone directly enters the tail gas treatment device 9.

Example 3

A method for cracking organic matter in a zinc sulfate solution, specifically comprising the following steps: adding a zinc sulfate solution with an organic concentration of 400 mg/L and a pH value of 4.0 to a first-stage reactor device 31 after being filtered through a filter from a zinc sulfate solution water inlet At the same time, the first-level reaction kettle device 31 is fed into ozone with a concentration range of 80%, and the first-level organic matter oxidative cracking is completed under the action of ultrasonic waves with a power range of 1.2 kW and a stirring rate with a range of 300 rpm. Control the reaction time to 15 minutes. The fully reacted solution in the primary reactor device 31 is added to the secondary reactor device 32 through the water inlet, while the secondary reactor device 32 is passed into the ozone with a concentration range of 80%, and is 0.7 kW in the power range. The oxidative cracking of secondary organics was completed under the action of ultrasonic waves and stirring with a stirring rate in the range of 300 rpm, and the reaction time was controlled for 13 minutes. The complete solution of the reaction in the secondary reactor device 32 is added to the tertiary reactor device 33 through the water inlet, while the tertiary reactor device 33 is passed into the ozone with a concentration range of 80%, and is 0.3 kW in the power range. Under the action of ultrasonic waves and stirring with a stirring rate in the range of 300 r/min, the oxidative cracking of tertiary organic matter is completed, and the reaction time is controlled for 10 minutes. After the reaction, the solution and excess ozone are respectively discharged from the zinc sulfate solution water outlet and the tail gas discharge port, the zinc sulfate solution with completely cracked organic matter enters the liquid storage tank 70, and the ozone directly enters the tail gas treatment device 12.

Example 4

A method for cracking organic matter in a zinc sulfate solution, specifically comprising the following steps: adding a zinc sulfate solution with an organic concentration of 500 mg/L and a pH value of 5.0 to a first-stage reactor device 31 after being filtered through a filter from a zinc sulfate solution water inlet At the same time, the first-level reaction kettle device 31 is fed with ozone with a concentration of 80%, and the first-level organic matter oxidative cracking is completed under the action of ultrasonic waves with a power range of 1.3 kW and agitation with a stirring speed range of 400 rpm. The reaction time was 20 minutes. The fully reacted solution in the first-level reactor device 31 is added to the second-level reactor device 32 through the water inlet, while the second-level reactor device 32 is passed into the ozone with a concentration of 80%, and the ultrasonic wave of 0.8 kW is in the power range. The oxidative cracking of secondary organic matter is completed under the action of stirring with a stirring rate in the range of 400 revolutions per minute, and the reaction time is controlled for 12 minutes. The solution that reacts completely in the secondary reactor device 32 is added to the tertiary reactor device 33 through the water inlet, and the tertiary reactor device 33 is fed into the ozone with a concentration range of 80%, and is 0.4 kW in the power range. Under the action of ultrasonic waves and stirring with a stirring rate in the range of 400 rev/min, the oxidative cracking of tertiary organic matter is completed, and the reaction time is controlled for 7 minutes. After the reaction, the solution and excess ozone are respectively discharged from the zinc sulfate solution water outlet and the tail gas discharge port, the zinc sulfate solution with completely cracked organic matter enters the liquid storage tank 70, and the ozone directly enters the tail gas treatment device 9.

Example 5

A method for cracking organic matter in a zinc sulfate solution, specifically comprising the following steps: adding a zinc sulfate solution containing 800 mg/L organic matter and a pH value of 5.0 to the first-stage reactor device 31 from the zinc sulfate solution water inlet after being filtered through a filter At the same time, the first-stage reactor device 31 is fed into ozone with a concentration range of 90%, and the first-stage organic matter oxidation cracking is completed under the action of ultrasonic waves with a power range of 1.4 kW and a stirring rate with a stirring speed range of 700 rpm. The reaction time was 25 minutes. The fully reacted solution in the primary reactor device 31 is added to the secondary reactor device 32 through the water inlet, while the secondary reactor device 32 is passed into the ozone with a concentration range of 90%, and is 0.9 kW in the power range. The oxidative cracking of secondary organics was completed under the action of ultrasonic waves and stirring with a stirring rate in the range of 700 rpm, and the reaction time was controlled for 20 minutes. The complete solution of the reaction in the secondary reactor device 32 is added to the tertiary reactor device 33 through the water inlet, while the tertiary reactor device 33 is passed into the ozone with a concentration range of 90%, and is 0.5 kW in the power range. Under the action of ultrasonic waves and stirring with a stirring rate in the range of 700 rev/min, the oxidative cracking of three-stage organic matter is completed, and the reaction time is controlled for 10 minutes. After the reaction, the solution and excess ozone are discharged from the zinc sulfate solution water outlet and the tail gas discharge port respectively, the zinc sulfate solution with completely cracked organic matter enters the liquid storage tank 70, and the ozone directly enters the tail gas treatment device 9.

Example 6

A method for cracking organic matter in a zinc sulfate solution, specifically comprising the following steps: adding a zinc sulfate solution containing 900 mg/L organic matter and a pH value of 6.0 to the first-stage reactor device 31 from the zinc sulfate solution water inlet after being filtered through a filter At the same time, the first-level reactor device 31 is fed with ozone with a concentration of 100%, and the first-level organic matter oxidative cracking is completed under the action of an ultrasonic wave with a power range of 1.5 kW and a stirring rate with a stirring speed range of 800 rpm, and the reaction is controlled. Time 30 minutes. The fully reacted solution in the primary reactor device 31 is added to the secondary reactor device 32 through the water inlet, while the secondary reactor device 32 is passed into the ozone with a concentration range of 100%, and is 1 kW in the power range. The oxidative cracking of secondary organics was completed under the action of ultrasonic waves and stirring with a stirring rate in the range of 800 rpm, and the reaction time was controlled for 15 minutes. The fully reacted solution in the secondary reactor device 32 is added to the tertiary reactor device 33 through the water inlet, while the tertiary reactor device 33 is fed with ozone with a concentration of 100%, and an ultrasonic wave of 0.5 kW in the power range. The oxidative cracking of tertiary organic matter is completed under the action of stirring with a stirring rate in the range of 800 revolutions per minute, and the reaction time is controlled for 10 minutes. After the reaction, the solution and excess ozone are discharged from the zinc sulfate solution water outlet and the tail gas discharge port respectively, the zinc sulfate solution with completely cracked organic matter enters the liquid storage tank 70, and the ozone directly enters the tail gas treatment device 9.

In Examples 1-6, the total reaction time for cracking and removing organic matter is not more than 55 minutes, indicating that this method can effectively remove organic matter in zinc sulfate solution in a short time.

Claims (6)

1. the cracking method of organic matter in a zinc sulfate solution, it is characterized in that described method multistage reactor is arranged in steps, and the reaction time and ultrasonic power decrease with the number of reaction stages, and the total energy consumption ratio is in the one-stage reactor device. The energy consumption of the complete reaction is low; the total organic matter cracking and removing reaction time does not exceed 55 minutes, which is specifically realized by the following steps: (1) adding the zinc sulfate solution whose organic matter concentration is 200mg/L and the pH value is 2.0 from the zinc sulfate solution water inlet after being filtered by a filter into the first-level reactor device (31), while the first-level reactor device (31) is added. ) Ozone with a concentration of 70% was introduced, and the first-level organic oxidation cracking was completed under the action of ultrasonic waves with a power of 1kW and agitation with a stirring speed of 100 rpm, and the reaction time was controlled for 10 minutes; (2) The fully reacted solution in the primary reactor device (31) is added to the secondary reactor device (32) through the water inlet, and at the same time the secondary reactor device (32) is fed with ozone with a concentration of 70% , under the action of ultrasonic waves with a power of 0.5 kW and agitation with a stirring rate in the range of 100 r/min, the oxidative cracking of secondary organics is completed, and the reaction time is controlled for 5 minutes; (3) The fully reacted solution in the secondary reactor device (32) is added to the tertiary reactor device (33) through the water inlet, and at the same time the tertiary reactor device (33) is fed with ozone with a concentration of 70% , under the action of ultrasonic waves with a power range of 0.1kW and agitation with a stirring rate range of 100 r/min, the oxidative cracking of three-stage organic matter is completed, and the reaction time is controlled for 5 minutes; (4) After the reaction is completed, the zinc sulfate solution of the complete cracking of the organic matter and the excess ozone are discharged from the zinc sulfate solution outlet and the tail gas discharge port respectively, the zinc sulfate solution of the complete cracking of the organic matter enters the storage tank, and the ozone directly enters the exhaust gas treatment in the device. 2. the cracking method of organic matter in a zinc sulfate solution, it is characterized in that described method multistage reaction kettle is arranged in steps, and the reaction time and ultrasonic power decrease with the reaction order, and the total energy consumption ratio is in the one-stage reaction kettle device. The energy consumption of the complete reaction is low; the total organic matter cracking and removing reaction time does not exceed 55 minutes, which is specifically realized by the following steps: (1) The zinc sulfate solution with organic concentration of 400mg/L and pH value of 4.0 is added to the first-level reactor device (31) from the zinc sulfate solution water inlet after being filtered by a filter, and the first-level reactor device (31) is added simultaneously. ) Ozone with a concentration range of 80% was introduced, and the first-level organic matter oxidative cracking was completed under the action of ultrasonic waves with a power range of 1.2kW and agitation with a stirring rate range of 300 rpm, and the reaction time was controlled for 15 minutes; (2) The fully reacted solution in the primary reactor device (31) is added to the secondary reactor device (32) through the water inlet, and at the same time the secondary reactor device (32) is fed with a concentration range of 80%. Ozone, under the action of ultrasonic waves with a power range of 0.7kW and agitation with a stirring speed range of 300 rpm, the oxidative cracking of secondary organics is completed, and the reaction time is controlled for 13 minutes; (3) The fully reacted solution in the secondary reactor device (32) is added to the tertiary reactor device (33) through the water inlet, and at the same time, the tertiary reactor device (33) is fed with a concentration range of 80%. Ozone, under the action of ultrasonic waves with a power range of 0.3kW and agitation with a stirring speed range of 300 r/min, the oxidative cracking of three-stage organic matter is completed, and the reaction time is controlled for 10 minutes; (4) After the reaction is completed, the solution and the excess ozone are discharged from the zinc sulfate solution water outlet and the tail gas discharge port respectively, the zinc sulfate solution with completely cracked organic matter enters the liquid storage tank, and the ozone directly enters the tail gas treatment device. 3. the cracking method of organic matter in a zinc sulfate solution, it is characterized in that described method multistage reactor is arranged in steps, and the reaction time and ultrasonic power decrease with the number of reaction stages, and the total energy consumption ratio is in the one-stage reactor device. The energy consumption of the complete reaction is low; the total organic matter cracking and removing reaction time does not exceed 55 minutes, which is specifically realized by the following steps: (1) The zinc sulfate solution with organic concentration of 400mg/L and pH value of 4.0 is added to the first-level reactor device (31) from the zinc sulfate solution water inlet after being filtered by a filter, and the first-level reactor device (31) is added simultaneously. ) Ozone with a concentration range of 80% was introduced, and the first-level organic matter oxidative cracking was completed under the action of ultrasonic waves with a power range of 1.2kW and agitation with a stirring rate range of 300 rpm, and the reaction time was controlled for 15 minutes; (2) The fully reacted solution in the primary reactor device (31) is added to the secondary reactor device (32) through the water inlet, and at the same time the secondary reactor device (32) is fed with a concentration range of 80%. Ozone, under the action of ultrasonic waves with a power range of 0.7kW and agitation with a stirring speed range of 300 rpm, the oxidative cracking of secondary organics is completed, and the reaction time is controlled for 13 minutes; (3) The fully reacted solution in the secondary reactor device (32) is added to the tertiary reactor device (33) through the water inlet, and at the same time, the tertiary reactor device (33) is fed with a concentration range of 80%. Ozone, under the action of ultrasonic waves with a power range of 0.3kW and agitation with a stirring speed range of 300 r/min, the oxidative cracking of three-stage organic matter is completed, and the reaction time is controlled for 10 minutes; (4) After the reaction is completed, the solution and the excess ozone are discharged from the zinc sulfate solution water outlet and the tail gas discharge port respectively, the zinc sulfate solution with completely cracked organic matter enters the liquid storage tank, and the ozone directly enters the tail gas treatment device. 4. the cracking method of organic matter in a zinc sulfate solution, it is characterized in that described method multistage reaction kettle is arranged in steps, and the reaction time and ultrasonic power decrease with the number of reaction stages, and the total energy consumption ratio is in the one-stage reaction kettle device. The energy consumption of the complete reaction is low; the total organic matter cracking and removing reaction time does not exceed 55 minutes, which is specifically realized by the following steps: (1) adding the zinc sulfate solution whose organic matter concentration is 500mg/L and the pH value is 5.0 from the zinc sulfate solution water inlet after being filtered by a filter into the first-level reactor device (31), while the first-level reactor device (31) is added. ) Ozone with a concentration of 80% was introduced, and the first-level organic matter oxidative cracking was completed under the action of ultrasonic waves with a power range of 1.3kW and agitation with a stirring rate of 400 rpm, and the reaction time was controlled for 20 minutes; (2) The fully reacted solution in the primary reactor device (31) is added to the secondary reactor device (32) through the water inlet, and at the same time the secondary reactor device (32) is fed with ozone with a concentration of 80% , under the action of ultrasonic waves with a power range of 0.8kW and agitation with a stirring speed range of 400 r/min, the secondary organic matter oxidative cracking was completed, and the reaction time was controlled for 12 minutes; (3) The fully reacted solution in the secondary reactor device (32) is added to the tertiary reactor device (33) through the water inlet, and at the same time, the tertiary reactor device (33) is fed with a concentration range of 80%. Ozone, under the action of ultrasonic waves with a power range of 0.4kW and agitation with a stirring speed range of 400 r/min, the oxidative cracking of three-stage organic matter is completed, and the reaction time is controlled for 7 minutes; (4) After the reaction is completed, the solution and the excess ozone are discharged from the zinc sulfate solution water outlet and the tail gas discharge port respectively, the zinc sulfate solution with completely cracked organic matter enters the liquid storage tank, and the ozone directly enters the tail gas treatment device. 5. the cracking method of organic matter in a zinc sulfate solution, it is characterized in that described method multistage reactor is arranged in steps, and the reaction time and ultrasonic power decrease with the number of reaction stages, and the total energy consumption ratio is in the one-stage reactor device. The energy consumption of the complete reaction is low; the total organic matter cracking and removing reaction time does not exceed 55 minutes, which is specifically realized by the following steps: (1) The zinc sulfate solution containing 800mg/L organic matter and the pH value of 5.0 is added to the first-stage reactor device (31) from the zinc sulfate solution water inlet after being filtered by a filter, and simultaneously the first-stage reactor device (31) Ozone with a concentration range of 90% was introduced, and the first-level organic oxidative cracking was completed under the action of ultrasonic waves with a power range of 1.4kW and agitation with a stirring rate range of 700 rpm, and the reaction time was controlled for 25 minutes; (2) The fully reacted solution in the primary reactor device (31) is added to the secondary reactor device (32) through the water inlet, and at the same time, the secondary reactor device (32) is fed with a concentration range of 90%. Ozone, under the action of ultrasonic waves with a power range of 0.9kW and agitation with a stirring speed range of 700 rpm, the oxidative cracking of secondary organics is completed, and the reaction time is controlled for 20 minutes; (3) The fully reacted solution in the secondary reactor device (32) is added to the tertiary reactor device (33) through the water inlet, and at the same time, the tertiary reactor device (33) is fed with a concentration range of 90%. Ozone, under the action of ultrasonic waves with a power range of 0.5kW and agitation with a stirring speed range of 700 r/min, the oxidative cracking of three-stage organic compounds is completed, and the reaction time is controlled for 10 minutes; (4) After the reaction is completed, the solution and the excess ozone are discharged from the zinc sulfate solution water outlet and the tail gas discharge port respectively, the zinc sulfate solution with completely cracked organic matter enters the liquid storage tank, and the ozone directly enters the tail gas treatment device. 6. a method for cracking organic matter in zinc sulfate solution, it is characterized in that described method multistage reactor is arranged in steps, and the reaction time and ultrasonic power decrease with the number of reaction stages, and the total energy consumption ratio is in the one-stage reactor device. The energy consumption of the complete reaction is low; the total organic matter cracking and removing reaction time does not exceed 55 minutes, which is specifically realized by the following steps: (1) The zinc sulfate solution containing 900mg/L organic matter and the pH value of 6.0 is added to the first-stage reactor device (31) from the zinc sulfate solution water inlet after being filtered by a filter, and the first-stage reactor device (31) is added simultaneously. Ozone with a concentration of 100% was introduced, and the first-level organic oxidative cracking was completed under the action of ultrasonic waves with a power range of 1.5kW and agitation with a stirring rate of 800 rpm, and the reaction time was controlled for 30 minutes; (2) The fully reacted solution in the primary reactor device (31) is added to the secondary reactor device (32) through the water inlet, and at the same time the secondary reactor device (32) is fed with a concentration range of 100%. Ozone, under the action of ultrasonic waves with a power range of 1kW and agitation with a stirring speed range of 800 rpm, the oxidative cracking of secondary organics is completed, and the reaction time is controlled for 15 minutes; (3) adding the fully reacted solution in the secondary reactor device (32) into the tertiary reactor device (33) through the water inlet, and simultaneously introducing ozone with a concentration of 100% into the tertiary reactor device (33) , under the action of ultrasonic waves with a power range of 0.5kW and agitation with a stirring speed range of 800 rpm, the oxidative cracking of three-stage organic compounds is completed, and the reaction time is controlled for 10 minutes; (4) After the reaction is completed, the solution and the excess ozone are discharged from the zinc sulfate solution water outlet and the tail gas discharge port respectively, the zinc sulfate solution with completely cracked organic matter enters the liquid storage tank, and the ozone directly enters the tail gas treatment device.

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