Electrochemical membrane bioreactor

Abstract

The invention discloses an electrochemical membrane bioreactor. The electrochemical membrane bioreactor comprises an anode chamber, an anode, a filtering separation membrane and an air cathode, wherein a water inlet pipe is arranged on the anode chamber, an electro-microorganism is adhered to the anode, the anode and the air cathode are connected through a conducting wire, the anode chamber is of an enclosed structure, a through hole is formed in the wall of the anode chamber, a filtering separation membrane is sheathed on the outer side of the through hole, the air cathode is sheathed on the outer side of the filtering separation membrane, and a cathode microorganism is adhered to the air cathode. The electrochemical membrane bioreactor provided by the invention has the advantages that after waste water is sequentially treated through the anode, the filtering separation membrane and the cathode, high-quality effluent is obtained, and the air cathode is exposed in air, so that the energy consumption behaviors such as manual aeration and oxygenation are avoided, thus the energy consumption is reduced while wastewater is treated.

Description

Technical field [0001] The invention relates to the field of membrane bioreactors, in particular to an electrochemical membrane bioreactor. Background technique [0002] The shortage of energy and water resources are two important challenges facing the world, and the energy hidden in wastewater is often treated as waste and not fully utilized. The anaerobic digestion process has shown great advantages for recovering energy from high-concentration wastewater. It has the advantages of low biological growth, low energy consumption and high methane production. It has been widely studied and applied in recent decades. However, the anaerobic digestion process still has many defects. For example, if the methane produced cannot be collected properly, it will escape into the atmosphere and aggravate global warming. In addition, pure anaerobic treatment cannot meet stricter discharge standards for the discharge of chemical oxygen demand (COD), suspended solids (SS) and nutrient elements (...

AI Technical Summary

Problems solved by technology

However, due to the limited residence time of biomass in MFCs, the effluent quality of MFCs is low and the treatment efficiency is low.

[0003] In order to solve the above-mentioned technical problems, Chinese patent CN102381753 couples MBRs and MFCs together to obtain a bioelectrochemical membrane reactor, which can recover electrical energy and obtain better effluent water quality while the wastewater is biologically treated, but the above-mentioned system needs Artificial aeration is carried out to provide the dissolved oxygen necessary for the respiration and nitrification of aerobic microorganisms, which makes the energy consumption of the system greatly exceed the electric energy recovered from wastewater when the bioelectrochemical membrane reactor is continuously used, and additional energy consumption of the system is required

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