铁碳微电解技术净化污水的研究进展

Development of Iron-carbon Micro-electrolysis Technology to Purify Wastewater

微电解是指低压与直流电条件下电解,利用Fe和C两种物质自发生成较弱电流分解污水的净化法,可实现降解有机污染物的目标。在酸性环境时产生大量微电池系统,在电化学反应过程中可有效破坏污水溶液的电平衡,铁电极的反应产物还起到有效吸附和絮凝作用。在反应进程中,酸碱度、反应时间、铁屑直径和组分、铁碳比等影响污水处理效果。该工艺可大量用于制药、化工、生活等各类废水净化,处理污水方便,实用成本较低。该技术未来在应用上还需要进一步开发性能优良填料,完善反应器结构,克服填料板结、沟流等不足;在理论上还需要进一步研究铁碳微电解技术与其他外场(如超声波、紫外光、磁场等)耦合强化的协同机理;探索在广泛酸碱度条件下污水的净化原理,扩大微电解技术应用范围,为污水有效处理提供新技术。

Micro-electrolysis refers to the electrolysis under low-voltage and direct current conditions,using Fe and C two substances to spontaneously generate a weak current decomposition of sewage purification method,can achieve the degradation of organic pollutants.In acidic environment,a large number of micro-cell systems are generated,which can effectively destroy the electrical balance of sewage solution in the electrochemical reaction process.The reaction products of iron electrode also play an effective role of adsorption and flocculation.In the process of the reaction,the pH value,reaction time,iron scrap diameter and composition,iron-carbon ratio effect on the wastewater treatment.This process can be widely used in pharmaceutical,chemical,life and other waste water purification.The technology is convenient and practical,and the cost is low.In the future application of this technology,it is still necessary to further develop the filler with excellent performance,improve the reactor structure,and overcome the deficiencies of packing hardening and trench flow.In theory,it is necessary to further study the synergetic mechanism of iron-carbon micro-electrolysis technology and other external fields,such as ultrasonic wave,ultraviolet light,magnetic field and so on.This paper explores the principle of wastewater purification under the condition of wide pH,expands the application range of micro-electrolysis technology,and provides a new technology for effective wastewater treatment.