Biofilm electrode and uasb coupled reactor

Abstract

The invention relates to a sewage treatment device and particularly relates to a biological membrane electrode and UASB (Upflow Anaerobic Sludge Blanket) coupled reactor comprising a reactor cylinder, a biological membrane electrode system, an electrochemical testing system and a cathode potential testing device, wherein the reactor cylinder internally and sequentially comprises a water distribution plate and the biological membrane electrode system from bottom to top; a sludge bed region is arranged between the biological membrane electrode system and a three-phase separator; the biological membrane electrode system comprises an anode and a cathode; the cathode potential testing device comprises a reference electrode, a salt bridge and sealed electrolyte, wherein the salt bridge is used for communicating the sludge bed region near the cathode and the sealed electrolyte, one end of the reference electrode is connected with the sealed electrolyte, and the other end of the reference electrode is connected with the electrochemical testing system. The biological membrane electrode and UASB coupled reactor provided by the invention is used for promoting the oxidative metabolism of microorganisms to organic pollutants and increasing the COD (Chemical Oxygen Demand) removal rate through the coupling effect of a micro electric field and the microorganisms; meanwhile, the micro electric field can be used for promoting the transfer of electrons in the system and increasing the degradation rate of the pollutants.

Description

technical field [0001] The invention relates to a sewage treatment device, in particular to a reactor coupled with a biofilm electrode and a UASB. Background technique [0002] Since Lettinga and Hulshoff discovered the phenomenon of sludge granulation in the upflow anaerobic sludge bed reaction (UASB) in the 1970s, the research on anaerobic granular sludge has received extensive attention. However, there are also problems such as long start-up time, easy acidification of the system, poor load shock resistance, and insufficient available electron donors, and it is often impossible to completely mineralize toxic and refractory substances. [0003] Electrolytic treatment technology does not require additional chemicals, has the advantages of less land occupation, simple and flexible operation, etc. As a mature water treatment technology, it is widely used in the treatment of electroplating wastewater, printing and dyeing wastewater, pharmaceutical wastewater and other fields. ...

AI Technical Summary

Problems solved by technology

The electrochemical-biological coupling process has great application potential in the field of refractory organic wastewater treatment, but there is still a lack of convenient and efficient coupled reactors and supporting electrochemical test systems. Therefore, the development of new biofilm electrodes and UASB coupling reactions The device and its electrochemical test system have high application value

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