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Electrodialyzer with ultrasonic function

An electrodialyzer and functional technology, applied in the field of electrodialyzer, can solve the problems of energy consumption, time consumption, pollution and effective cleaning, etc.

Active Publication Date: 2012-05-30
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These two methods are time-consuming and labor-intensive, which affect the continuity of electrodialysis operation (Ren Hongyan, Research progress in electrodialysis membrane fouling and its control methods [J], Modern Chemical Industry, 2007, 27(7): 18-21)
[0005] The present invention is dedicated to delaying the formation of membrane fouling in the electrodialysis process, better solving the problem of effective cleaning of membrane fouling in the electrodialysis process, and proposes an electrodialyzer with an online ultrasonic function

Method used

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  • Electrodialyzer with ultrasonic function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] The conventional anode electrode plate is used as the anode plate, such as Figure 4b The electrode plate on which the ultrasonic transducer is installed is the cathode plate, and the maximum diameter of the metal block at the front end of the ultrasonic transducer installed is 45 mm. The center of the front metal block of the ultrasonic transducer and the geometric center of the effective surface of the electrode plate Overlapping, the ultrasonic transducer 3 and the electrode plate electrode material 4-2 are bonded with 302 modified acrylate adhesive. The frequency of the ultrasonic transducer is 40kHz, the ultrasonic output power is 40W, the effective surface size of the electrode plate is 5cm×10cm, and the effective membrane area is 50cm 2 , the film surface power is 0.8W / cm 2 .

[0074] The commercially available ZN48 electromagnetic relay is used for timing control; the ultrasonic generator matched with the above-mentioned ultrasonic transducer is adopted; the o...

Embodiment 2

[0077] Use the same online ultrasonic electrodialyzer as in Example 1 to carry out acid-base regeneration treatment on the fermentation waste liquid.

[0078] The operating voltage of electrodialysis is 30V, constant pressure operation; the initial liquid of the acid chamber is 0.05mol / L dilute sulfuric acid 300mL, the initial liquid of the alkali chamber is 0.1mol / L dilute ammonia water 300mL, the initial liquid of the material chamber is sterilized monosodium glutamate, etc. Electrode mother solution 300mL, the initial solution of the electrode compartment is 300mL of anhydrous sodium sulfate solution of 30g / L. The set temperature of the constant temperature water bath was 30°C. The ultrasonic mode controlled by the electromagnetic relay is as follows: 60s is a cycle, the ultrasonic time is 15s, and the non-ultrasonic time is 45s until the end of the electrodialysis operation. The measured and calculated electrodialysis process parameters are as follows: the average current...

Embodiment 3

[0080] The conventional cathode electrode plate is used as the cathode plate, and the mode of coupling the ultrasonic transducer and the horn with the anode plate as shown in Figure 4d is adopted. The number of ultrasonic transducers installed is 4, and the effective surface size of the electrode plate is 10cm×20cm, evenly distributed within the effective area, the maximum diameter of the metal block at the front end of the ultrasonic transducer installed is 45mm, and the lower end of the horn is at the geometric center of the equally divided effective surface, such as Figure 6b As shown; 302 modified acrylate adhesive is used for bonding between the ultrasonic transducer 3 and the upper end of the horn 3-4. The frequency of the ultrasonic transducer is 40kHz, the ultrasonic output power is 40W, and the effective membrane area is 200cm 2 , the film surface power is 0.8W / cm 2 .

[0081] The commercially available ZN48 electromagnetic relay is used for timing control; the ult...

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Abstract

The invention relates to an electrodialyzer with an ultrasonic function. According to the invention, the electrodialyzer comprises: a plate electrode (4), an ion-exchange membrane (6), a separating plate (5) and a direct-current constant voltage power supply (7). The plate electrode (4) comprises: a main body supporting material (4-1), an electrode material (4-2), a plate electrode medial-surface supporting net (4-3), and membrane pack liquid material inlet bolts (4-4). The separating plate (5) comprises a separating plate main body supporting material (5-1). The electrodialyzer is characterized in that: the electrodialyzer also comprises an ultrasonic wave generating system used for mixing electrodialysis liquid, such that pollution on the ion-exchange membrane is inhibited and retarded. The ultrasonic wave generating system comprises an ultrasonic wave generator (2) and an ultrasonic transducer (3). With an ultrasonic effect provided by the electrodialyzer of the invention, the influence of membrane pollution is reduced, and comprehensive energy consumption is reduced.

Description

technical field [0001] The invention relates to the technical field of membrane separation, in particular, the invention relates to an electrodialyzer with an ultrasonic function. Background technique [0002] Electrodialysis technology is one of the membrane separation technologies. Under the action of a direct current electric field, anions and cations can selectively pass through anion and cation exchange membranes, or water can be dissociated into H in a bipolar membrane. + and OH - It is a technology to achieve the purpose of material purification, separation and acid-base regeneration. Because of the advantages of no consumption of medicines and no waste liquid generation, it is widely used in chemical industry, light industry, metallurgy, papermaking, pharmaceutical industry and other fields. [0003] However, membrane fouling is always one of the main factors limiting the application of electrodialysis technology. In the field of environmental and biotechnology in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D61/42
Inventor 杨鹏波王倩丛威
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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