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Bioelectrochemical reactors are a type of bioreactor where bioelectrochemical processes can take place. They are used in bioelectrochemical syntheses, environmental remediation and electrochemical energy conversion. Examples of bioelectrochemical reactors include microbial electrolysis cells, microbial fuel cells and enzymatic biofuel cells and electrolysis cells, microbial electrosynthesis cells, and biobatteries. This bioreactor is divided in two parts: The anode, where the oxidation reaction takes place; And the cathode, where the reduction occurs.
Denitrification biological membrane based on biological enhancement of electroactive bacteria as well as construction method and application of denitrification biological membrane
PendingCN121672761AWater contaminantsTreatment with anaerobic digestion processesActivated sludgeBatch operation
The invention discloses a denitrification biological membrane based on biological enhancement of electroactive bacteria as well as a construction method and application of the denitrification biological membrane. The construction method comprises the following steps: constructing a double-chamber bioelectrochemical reactor; introducing an activated sludge mixed solution as a basic inoculum into the working electrode chamber, and simultaneously adding an electroactive bacteria solution in a logarithmic phase for biological enhancement; the reactor after inoculation is connected to an external circuit to form a closed circuit state, constant voltage or current is applied, and biofilm culturing is carried out in a sequencing batch operation mode; through periodical water changing and carbon source supplying, the synergistic effect of electrical stimulation and electroactive bacteria is utilized, and microbial communities are driven to take electroactive bacteria as a main director and denitrifying bacteria as a main director until a biological membrane is mature and stable and efficient denitrification is realized. According to the method, the starting period of the reactor can be remarkably shortened, nitrate can be efficiently removed under the condition of low carbon nitrogen ratio, nitrite accumulation is effectively reduced, and the method has the advantages of being high in starting speed, high in denitrification efficiency and high in operation stability.
Owner:SOUTHEAST UNIV