Bioelectrochemical device and method for mineralizing and degrading organic chlorine

Abstract

The invention discloses a bioelectrochemical device for mineralization degradation of organochlorine, which comprises a bioelectrochemical reaction chamber with a cavity, a constant potential controller, two working electrodes, a counter electrode and a reference electrode, and organochlorine sewage is inoculated into the bioelectrochemical reaction chamber; the constant potential controller is used for providing constant potential; the two working electrodes are respectively a biological anode and a biological cathode; the biological anode, the biological cathode, the counter electrode and the reference electrode are arranged in the biological electrochemical reaction chamber at intervals and are electrically connected with the constant potential controller through wires respectively. According to the bioelectrochemical device for mineralizing and degrading the organic chlorine, the biological cathode and the biological anode are constructed by providing different constant potentials, and functional microorganisms in dechlorination and mineralization stages for degrading the organic chlorine are spatially separated, so that directional conversion of the organic chlorine is realized, complete degradation is finally achieved, the degradation period is shortened, and the production cost is reduced. Meanwhile, the environmental risk is reduced and the cost is saved. The invention also provides a bioelectrochemical method for mineralization degradation of organic chlorine.

Description

technical field [0001] The invention relates to the technical field of organic chlorine polluted environment bioremediation, and more specifically relates to a bioelectrochemical device and method for organic chlorine mineralization degradation. Background technique [0002] Organochlorine compounds (Chlorinated organic compounds, COCs) are often used as basic raw materials for the production of analgesics or pesticides, and widely exist in household or industrial wastewater. It has attracted widespread attention because of its carcinogenic properties, refractory degradation, and persistent presence in the environment. Due to the diversity and environmental adaptability of microorganisms, biodegradation is an important process for the removal of COCs. Since the presence of chlorine in the structure of COCs is toxic to microorganisms, the reductive dechlorination of COCs is a key step in its degradation and detoxification. In an anaerobic or anoxic environment, COCs get ele...

AI Technical Summary

Problems solved by technology

At present, various microbial strains that degrade COCs have been isolated and identified, but the degradation efficiency of using them for actual bioremediation is low, mainly because the biodegradation process of COCs is usually the result of the interaction of multiple microorganisms. It is difficult to achieve the whole process of COCs degradation, resulting in the accumulation of intermediate products that may be more toxic to environmental microorganisms

Images