Electrochemical-biological fluidized bed reactor and wastewater treatment method

Abstract

The invention discloses an electrochemical-biological fluidized bed reactor and a wastewater treatment method. The reactor comprises an anaerobic fluidized bed and an aerobic fluidized bed. The lower portions of the anaerobic fluidized bed and the aerobic fluidized bed are connected through a first electrode group. The upper portions of the anaerobic fluidized bed and the aerobic fluidized bed are connected through a second electrode group. A first water inlet and a first water outlet are arranged in the anaerobic fluidized bed, a second water inlet and a second water outlet are arranged in the aerobic fluidized bed, and the first water outlet and the second water outlet are connected through a wastewater pipeline. An aeration head is arranged at the bottom of the aerobic fluidized bed. The wastewater treatment method includes maintaining the temperature in the anaerobic fluidized bed and the aerobic fluidized bed to be in the range of 18-38 DEG C, adding electrolyte into organic wastewater, and sequentially delivering the wastewater into the anaerobic fluidized bed and the aerobic fluidized bed for treatment. By means of the reactor and the wastewater treatment method, biological degradation is introduced in a conventional electrochemical system to achieve the oxidation-reduction where electrochemistry and biological degradation are coupled. The treatment speed is greatly increased, and the treatment effect of nitrogen-rich organic wastewater is improved.

Description

technical field [0001] The invention relates to the technical field of organic wastewater treatment, in particular to an electrochemical-biological fluidized bed reactor and a wastewater treatment method thereof. Background technique [0002] Coking wastewater and other wastewater containing refractory organic pollutants are characterized by high nitrogen content and refractory organic matter. Due to its complex composition, stable structure, strong toxicity and poor biodegradability, conventional sewage treatment methods are difficult. Therefore, it brings great pollution to the environment and has become a technical problem that has been paid attention to and to be solved in the field of environmental protection water treatment for many years. [0003] Among the traditional sewage treatment methods, the biochemical method can effectively remove the organic matter and odor in the wastewater, reduce the chroma of the wastewater, and has mature technology in engineering appli...

AI Technical Summary

Problems solved by technology

However, in the electrode-biofilm process, due to the small specific surface area of ​​the biofilm on the electrode surface and the easy shedding of the biofilm, the effect of improving denitrification efficiency is limited. less

Images