CN-224199263-U - Copper sulfate wastewater treatment system

CN224199263UCN 224199263 UCN224199263 UCN 224199263UCN-224199263-U

Abstract

The invention relates to a copper sulfate wastewater treatment system which comprises a three-stage reaction kettle, a double-pressure distillation tower and a centrifugal unit, wherein the three-stage reaction kettle comprises at least three-stage gradient reaction kettles, a first gradient reaction kettle is a spiral guide plate, a PH value detection module is arranged on a second gradient reaction kettle and is used for adjusting the injection rate of a catalyst according to a real-time PH value, a PTFE composite membrane with a gradient change pore diameter is arranged on a third gradient reaction kettle, the first gradient reaction kettle, the second gradient reaction kettle and the third gradient reaction kettle are sequentially arranged along the reaction kettle from top to bottom, the double-pressure distillation tower is connected with the three-stage reaction kettle and comprises a first pressure area and a second pressure area which are communicated with each other, the pressure of the first pressure area is larger than that of the second pressure area, the centrifugal unit is connected with the double-pressure distillation tower, and an outlet of the centrifugal unit is provided with a guide groove for adsorbing residual cationic polyacrylamide.

Inventors

TIAN ZHENMIN
TIAN ZIXIN
YANG YUANXI
YANG YAWEI

Assignees

焦作接地气化工科技有限公司

Dates

Publication Date: 20260505
Application Date: 20250603

Claims (10)

1. A copper sulfate wastewater treatment system, comprising: The three-stage reaction kettle comprises at least three-stage gradient reaction kettles, wherein a first gradient reaction kettle is a spiral guide plate, the spiral guide plate can enable copper sulfate wastewater and a catalyst to form a turbulent flow area with a rotational flow field intensity of more than or equal to 5m/s, a PH value detection module is arranged on a second gradient reaction kettle and is used for adjusting the injection rate of a catalyst N, N-dimethylformamide according to a real-time PH value, a PTFE composite membrane with a pore diameter gradient change is arranged on a third gradient reaction kettle and is used for intercepting and recycling unreacted catalyst, and the first gradient reaction kettle, the second gradient reaction kettle and the third gradient reaction kettle are sequentially arranged along the reaction kettle from top to bottom; The double-pressure distillation tower is connected with the three-stage reaction kettle and comprises a first pressure area and a second pressure area which are communicated with each other, wherein the pressure of the first pressure area is greater than that of the second pressure area; And the centrifugal unit is connected with the double-pressure distillation tower, a diversion trench is arranged at the outlet of the centrifugal unit, and an electro-adsorption module is arranged in the diversion trench and used for adsorbing residual cationic polyacrylamide.
2. The copper sulfate wastewater treatment system according to claim 1, wherein the first pressure zone is provided with a steam jet pump having a nozzle inclination angle of 55 ° to 57 °.
3. The copper sulfate wastewater treatment system of claim 1, further comprising a preheater, wherein the preheater is connected to the three-stage reaction kettle and is configured to preheat copper sulfate wastewater and a catalyst.
4. The copper sulfate wastewater treatment system of claim 1, further comprising a suspension separator coupled to the tertiary reaction vessel, the suspension separator configured to separate liquid and gas in the tertiary reaction vessel.
5. The copper sulfate wastewater treatment system of claim 1, further comprising a hydrochloric acid absorber coupled to the double pressure distillation column for absorbing vaporized hydrochloric acid gas.
6. The copper sulfate wastewater treatment system of claim 5, further comprising an acid storage tank coupled to the hydrochloric acid absorber, the hydrochloric acid absorber configured to store the parsed hydrochloric acid.
7. The copper sulfate wastewater treatment system of claim 1, further comprising a copper sulfate storage tank for storing treated copper sulfate crystals.
8. The copper sulfate wastewater treatment system of claim 1, wherein the first gradient reactor, the second gradient reactor, and the third gradient reactor have the same arm strength over the entire reactor.
9. The copper sulfate wastewater treatment system of claim 1, wherein the pore size gradient of the PTFE composite membrane comprises 50nm, 200nm, and 500nm.
10. The copper sulfate wastewater treatment system according to claim 1, wherein the pressure range of the first pressure zone is 0.4mpa to 0.55mpa; The pressure range of the second pressure area is 0.18-0.22 MPa.

Description

Copper sulfate wastewater treatment system Technical Field The invention relates to the technical field of copper sulfate wastewater treatment, in particular to a copper sulfate wastewater treatment system. Background Copper sulfate and wastewater of organic matters (such as toluene derivatives) are generated in the production of saccharin sodium, and important treatment is needed. In the high purity copper industry, wastewater containing copper nitrate and copper sulfate is a common contaminant. If the wastewater is directly discharged without treatment, serious pollution can be generated to the water body, and the ecological environment and human health are affected. Therefore, it is important to develop an effective treatment method. The patent with publication number CN203999198U provides a copper sulfate wastewater treatment system, including the copper sulfate wastewater container that connects gradually the setting, retort and filter equipment installs the force pump on the pipeline between retort and the filter equipment. The copper sulfate wastewater treatment method provided by the related technology has the advantages of simple structure, low recovery rate of treatment resources on copper sulfate, high recovery rate of hydrochloric acid, high impurity, low purity, complex process flow, environment friendliness and high technical cost. In view of the above-mentioned drawbacks of the existing copper sulfate wastewater treatment systems, the present inventors have actively studied and innovated based on the years of rich practical experience and expertise in designing and manufacturing such products and in combination with the application of the theories, so as to create a new copper sulfate wastewater treatment system capable of improving the general existing copper sulfate wastewater treatment system to make it more practical. After continuous research and design and repeated trial and improvement, the invention with practical value is finally created. Disclosure of Invention The invention aims to overcome the defects of the existing copper sulfate wastewater treatment system and provide a novel copper sulfate wastewater treatment system, and aims to solve the technical problems of low resource recovery rate, high hydrochloric acid recovery rate, high impurity, low purity, complex process flow, environment friendliness and high technical cost, so that the novel copper sulfate wastewater treatment system is more suitable for practical use and has industrial utilization value. In one aspect, a copper sulfate wastewater treatment system is provided, the system comprising: The three-stage reaction kettle comprises at least three-stage gradient reaction kettles, wherein a first gradient reaction kettle is a spiral guide plate, the spiral guide plate can enable copper sulfate wastewater and a catalyst to form a turbulent flow area with a rotational flow field intensity of more than or equal to 5m/s, a PH value detection module is arranged on a second gradient reaction kettle and is used for adjusting the injection rate of a catalyst N, N-dimethylformamide according to a real-time PH value, a PTFE composite membrane with a pore diameter gradient change is arranged on a third gradient reaction kettle and is used for intercepting and recycling unreacted catalyst, and the first gradient reaction kettle, the second gradient reaction kettle and the third gradient reaction kettle are sequentially arranged along the reaction kettle from top to bottom; The double-pressure distillation tower is connected with the three-stage reaction kettle and comprises a first pressure area and a second pressure area which are communicated with each other, wherein the pressure of the first pressure area is greater than that of the second pressure area; And the centrifugal unit is connected with the double-pressure distillation tower, a diversion trench is arranged at the outlet of the centrifugal unit, and an electro-adsorption module is arranged in the diversion trench and used for adsorbing residual cationic polyacrylamide. In an alternative embodiment, the first pressure region is provided with a steam jet pump, the nozzle inclination of which is 55 ° to 57 °. In an alternative embodiment, a preheater and a suspension separator are also included; The preheater is connected with the three-stage reaction kettle and is used for preheating the copper sulfate wastewater and the catalyst; The suspension separator is connected with the three-stage reaction kettle and is used for separating liquid and gas in the three-stage reaction kettle. In an alternative embodiment, a hydrochloric acid absorption tower is also included, coupled to the double pressure distillation tower, for absorbing vaporized hydrochloric acid gas. In an alternative embodiment, the method further comprises an acid storage tank connected with the hydrochloric acid absorption tower, wherein the hydrochloric acid absorption tower is used for storing the resolved h