Electrochemical device and method for in-situ acceleration low-temperature anaerobe domestication
An anaerobic microorganism and electrochemical technology, applied in the field of bioelectrochemistry, can solve the problems of cumbersome operation, long processing time, and extremely high requirements for microbial operation, and achieve the effect of simple and fast operation, low cost and short time
Active Publication Date: 2018-10-16
ZHEJIANG GONGSHANG UNIVERSITY
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Problems solved by technology
However, this technology is also very cumbersome to operate, has extremely high requirements for microbial operations, and takes a long time for pre-processing.
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Embodiment 1
[0053] In this example, the anaerobic treatment system of fluorine-containing wastewater in a certain enterprise is used as the test object. The water temperature is 10°C, the concentration of organic fluorine pollutants (p-fluoronitrobenzene) is ~100 mg / L, and the hydraulic retention time is 48 hours. A single anaerobic reaction The volume of the device is 2m 3 . The diameter of the device applied to this wastewater is 20cm, the height is 100cm, the electrode diameter is 3cm, the area ratio of cathode and anode is 1:5, the electrode materials are graphite rods, the voltage is 2V, the rotation speed is 60rmp, and the number of electrode systems is 18, the domestication period is 2 weeks.
[0054] At room temperature (30°C), the mineralization rate of organic fluorine is 75%, while the mineralization rate of microorganisms that have not been stimulated and domesticated by this device decreases to 9% at low temperatures, and after being domesticated by this device, the minerali...
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Abstract
The invention discloses an electrochemical device and method for in-situ acceleration low-temperature anaerobe domestication. The electrochemical device comprises a control system and at least one electrode system, each electrode system comprises a mounting plate, a negative electrode arranged at the center of the mounting plate, a plurality of positive electrodes arranged on the mounting plate around the negative electrode and a rotator connected with the mounting plate and driving the same to rotate, and the rotator is connected in the control system. When in use, the electrode systems are directly put in an existing anaerobic reactor, and the electrochemical device is started in the process of normal running of the anaerobic reactor; the electrochemical device is removed after low-temperature anaerobe domestication and enrichment are successful. The electrochemical device can be directly assembled in the existing anaerobic reactor, operation is simple and quick, and cost is low; original running process of the anaerobic reactor is unaffected in the process of mounting, and organic matter removing efficiency at the stage of domestication can be improved; compared with other domestication processes, the electrochemical device and method has the advantages that needed time is short, and energy consumption is low.
Description
technical field [0001] The invention belongs to the field of bioelectrochemistry, and in particular relates to an electrochemical device and method for accelerating the domestication of low-temperature anaerobic microorganisms in situ. Background technique [0002] Most of the central and northern regions of mainland China have a seasonal climate with four distinct seasons. The central region often has 1 to 3 months of extremely low temperature (less than 10°C) in a year, and the low temperature period in some high-latitude northern regions may be as long as 4 months. Most of the time the temperature will be below 0°C, and the water temperature will be below 10°C. Low temperature will greatly inhibit the metabolic activity of microorganisms, which will further increase the difficulty of biological treatment of wastewater. Based on this, the domestication of a microorganism with high biochemical activity under low temperature conditions is of great significance for winter wa...
Claims
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IPC IPC(8): C02F3/00C02F3/28C02F101/30
CPCC02F3/005C02F3/28C02F3/2866C02F2101/30C02F2203/004C02F2203/006
Inventor 冯华军梁禹翔余晓琴沈东升周志阳邓永斌
Owner ZHEJIANG GONGSHANG UNIVERSITY