Industrial wastewater treatment technology based on boron-doped diamond electrodes:A review
Industrial wastewater is generally characterized by poor biochemical properties,with many kinds of pollutants,high organic content and difficulty in degradation,etc.It is difficult to meet the discharge standards with conventional treatment methods.The deep treatment process of wastewater represented by the electrochemical advanced oxidation process can effectively treat industrial wastewater,which is one of the research hotspot for environmentalists in recent years.Boron-doped diamond(BDD)electrode has excellent physicochemical properties and is the most ideal and efficient anode material for the electrochemical oxidation treatment of wastewater.However,the research on the application of BDD electrodes in large size and the treatment of real industrial wastewater has not been summarized in time.This paper firstly reviewed the research progress on industrial wastewater characteristics,process principles,BDD electrode characteristics and preparation methods,treatment cases and optimization of process parameters involved in this process based on the electrochemical advanced oxidation process with BDD electrodes,and focused on large laboratory installations,pilot plants,and real industrial wastewater under different pollution systems.In the following,the development of BDD electrode materials and the technical characteristics of different types of processes were summarized.At the same time,the research progress of process optimization and the main reasons that currently limited the large-scale industrial application of this technology were also discussed.Finally,this paper concluded with an outlook on the industrial application prospects and main development directions of the electrochemical advanced oxidation process based on BDD electrodes.
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