An electrodialysis device for resource utilization of mustard pickled high-salt wastewater

Abstract

The invention discloses an electrodialysis device for resource utilization of preserved szechuan pickle pickling high-salt wastewater. The device comprises a box body, an anode plate and a cathode plate are fixedly mounted at two ends of the inner wall of the box body in sequence, a plurality of anion exchange membranes and cation exchange membranes are fixedly mounted in the middle of the inner wall of the box body in a matched manner, the anion exchange membranes and the cation exchange membranes are alternately distributed, a first partition plate is arranged between the anion exchange membrane and the cation exchange membrane, the first partition plate is installed on the box body in a matched mode, a strip-shaped through groove is formed in the middle of one side of the first partition, reciprocating lead screw pairs are arranged in the strip-shaped through grooves respectively, the upper end and the lower end of a lead screw of the reciprocating lead screw pair are fixedly connected with one ends of vertical shafts respectively, the other end of the vertical shaft on the upper side penetrates through a preformed hole in the top side of the box body, the inner periphery of thepreformed hole is rotationally connected with the outer periphery of the corresponding vertical shaft through a sealing bearing, and a driving device capable of driving the vertical shafts to rotateis fixedly installed on the top side of the box body. The device is simple in structure and ingenious in conception, and dirt adhering to the ion exchange membrane can be scraped off through a scraping plate.

Description

Technical field[0001]The invention belongs to the field of electrodialysis devices, in particular to an electrodialysis device for resource utilization of high-salt wastewater from pickling mustard.Background technique[0002]In recent years, electrodialysis has been widely used in specific wastewater fields. For example, it has a high removal efficiency for total nitrogen and total phosphorus, and no chemicals are added, which reduces secondary pollution, so it has a good development prospect; pickled mustard tuber In the treatment of high-salt wastewater, it is necessary to filter the large particles and colloidal organics in the wastewater through filtration, and then perform electrodialysis treatment, but due to the electrodialysis treatment, the small particles and small colloidal organics in the filtered wastewater re-aggregate Large particles and colloids are formed and adhere to the ion exchange membrane, which requires frequent cleaning of the ion exchange membrane. Frequent ...

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Problems solved by technology

[0002] In recent years, electrodialysis has been widely used in specific wastewater fields. For example, it has a high removal efficiency for total nitrogen and total phosphorus, and there is no chemical addition, which reduces secondary pollution, so it has a good development prospect; When treating high-salt wastewater, it is necessary to filter out large particles and colloidal organic matter in the wastewater, and then perform electrodialysis treatment, but due to the small particles and small colloidal organic matter in the filtered wastewater after electrodialysis treatment gather again Larger particles and colloids are formed and adhere to the ion exchange membrane, so that the ion exchange membrane needs to be cleaned frequently, and the ion exchange membrane cannot be cleaned by simple frequent pole changes. Therefore, we have invented a mustard pickling Electrodialysis device for resource utilization of high-salt wastewater

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