Micro-current Fenton-like fluidized bed membrane reactor for treating refractory wastewater

Abstract

The invention relates to a micro-current Fenton-like fluidized bed membrane reactor for treating refractory wastewater, the bottom and top of a reactor body are respectively provided with a water inlet and a water outlet, the reactor body is internally provided with a membrane reaction separation device, and the membrane reaction separation device comprises a membrane electrode and a counter electrode; the membrane electrode and the counter electrodes are clamped at the bottom of the reactor body, the membrane electrode is positioned between the two counter electrodes, and the membrane electrode and the counter electrodes are respectively connected with leads and are connected with an external direct-current stabilized power supply; an aeration device is arranged at the bottom of the reactor body; the Fenton-like membrane reactor constructed by the invention is used for efficient and green treatment of refractory organic wastewater, widens the pH value of the treated wastewater, reduces the loss of the catalyst, avoids the generation of iron mud, solves the problem that the iron mud is difficult to treat, not only can improve the removal efficiency of pollutants, but also is low in operation cost, and can be recycled for a long time.

Description

Technical field: [0001] The invention relates to a micro-current type Fenton fluidized bed membrane reactor for treating refractory wastewater, belonging to the field of wastewater treatment and resource utilization. Background technique: [0002] In recent years, persistent organic pollutants (POPs) such as antibiotics, hormones, pesticides, and phenols have been continuously detected in the aquatic environment and even drinking water. Even if the concentration of these persistent organic pollutants is very low, the long-term existence in the aquatic environment will gradually accumulate through the enrichment of the biological chain, and finally pose a serious threat to human health and the aquatic environment. Traditional sewage treatment plants (Wastewater Treatment Plant, WWTP) mostly use activated sludge method and biofilm method, etc., the removal rate of refractory organic pollutants is low, and can not be fully mineralized, resulting in some traditional sewage treat...

AI Technical Summary

Problems solved by technology

However, there are still some limiting factors to be overcome in the electrochemical Fenton-like technology, such as (1) the loss of the catalyst, which leads to an increase in processing costs, and if iron is selected as the catalyst, there will also be a corresponding problem of iron sludge; (2) the electro-Fenton technology The conversion efficiency of the electrode used is low. If it is modified (for example, coating the modified material on the electrode) to improve the catalytic efficiency and increase the input cost, the coating layer is easy to fall off after long-term use, and the cycle life is poor.

Images