Purification of Farmland Drainage Water Using Electrochemical Materials

With the growing global population and the intensification of agricultural production, the pollution issues associated with farmland drainage have become increasingly severe.The excessive discharge of nutrients, particularly nitrogen and phosphorus, has emerged as a major cause of water eutrophication and environmental pollution.Traditional treatment methods have struggled to effectively remove these pollutants, highlighting the urgent need for efficient, economical, and sustainable water purification technologies.Electrochemical materials, known for their efficiency, controllability, and environmental friendliness, are gaining attention in environmental remediation, especially for the purification of farmland drainage water.However, current research has largely focused on laboratory conditions, lacking validation in large-scale practical applications and facing challenges in technology integration, cost control, and long-term stability.This paper investigates the application of electrochemical denitrification and dephosphorization technologies for farmland drainage water purification.It comprises two main parts: the development of electrochemical denitrification and dephosphorization technologies tailored for farmland drainage purification, and the experimental methods for testing the purification of farmland drainage water using electrochemical materials.This paper aims to systematically investigate the application of electrochemical nitrogen and phosphorus removal technologies for purifying farmland drainage water.By optimizing key parameters such as voltage, electrode spacing, and pH, the optimal operating conditions were determined and validated through experiments on actual farmland drainage.The study found that the electrochemical technology performed excellently in removing organic pollutants, achieving chemical oxygen demand (COD) and biochemical oxygen demand over five days (BOD5) removal rates of 92.68% and 96.96%, respectively.Meanwhile, the removal rates for total phosphorus and total nitrogen were 35.15% and 35.08%, respectively.