Bio-membrane reactor for treating low-carbon-nitrogen-ratio wastewater and refractory organic matters

Abstract

The invention discloses a bio-membrane reactor for treating low-carbon-nitrogen-ratio wastewater and refractory organic matters. The reactor comprises a shell, an anode, a cathode, sponge iron, an activated carbon filling layer, a direct-current power supply, a water inlet pump, a water inlet pipe and a drain pipe, wherein a water inlet is formed in the bottom of the shell; a water outlet is formed in the upper part of the shell; wherein the cathode is of a cylindrical porous structure, the anode is of a disc four-cylinder structure, the anode is sleeved in the middle area of the cathode, sponge iron and an activated carbon filling layer are filled between the anode and the cathode, the anode is connected with the anode of the direct-current power supply, and the cathode is connected withthe cathode. In the same reactor, an electrode is used for electrolyzing wastewater to generate hydrogen, an environment suitable for microbial growth is created, an electron donor and an intermediatewith strong oxidizing property are provided for denitrification and ibuprofen degradation respectively, the purpose of removing nitric acid nitrogen and ibuprofen in a low carbon-nitrogen ratio is achieved, and the bio-membrane reactor has the advantages of low energy consumption, high efficiency, simple structure and simplicity in operation.

Description

technical field [0001] The invention relates to the field of low carbon-to-nitrogen ratio wastewater treatment, in particular to a three-dimensional electrode biofilm reactor, in particular to a three-dimensional electrode biofilm reactor suitable for treating low carbon-to-nitrogen ratio wastewater and refractory organic matter. Background technique [0002] Nitrogen removal from low C / N wastewater has received widespread attention. Traditional biological methods are not suitable for advanced treatment of this type of wastewater. When the organic matter in the water body is not enough to support the carbon source required for autotrophic denitrification, it will lead to incomplete denitrification and cause the accumulation of nitrite. Additional carbon sources are added, which increases the cost and causes the excess and residue of organic matter. [0003] The three-dimensional electrode is based on the electrolysis of the traditional two-dimensional electrode, and the co...

AI Technical Summary

Problems solved by technology

Disadvantages: high water temperature requirements, a layer of biofilm needs to be cultivated before use, low impact load resistance

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