基于水生植物-动物-微生物协同作用的污水生态净化理念,研制出一种利用特征波长灯源强化植物生长的可控型生态强化装置对污水厂尾水进行深度处理。研究表明,水力停留4 d时装置具有最佳的污水净化效果,COD、TP、TN、NH₄⁺-N的出水浓度分别为18.73、0.66、2.74、0.7 mg/L,根据相关国家标准规定,其对COD和NH₄⁺-N的去除效果达到了地表Ⅲ类标准,对TN和TP的去除效果分别达到了一级A和一级B的标准,对TP和NH₄⁺-N的去除效果仍有很大的提升空间;与人工湿地相比,生态强化装置对污染物的去除更具优势。

Based on the ecological purification concept about synergistic effect of aquatic plants-animals-microbes on sewage,a controllable ecological enhancement device that uses characteristic wavelength light sources to enhance plant growth is developed for advanced treatment of tail water from wastewater treatment plant.Research shows that the device has the best purification effect on sewage when the hydraulic retention time is 4 days.The concentrations of COD,TP,TN,and NH₄⁺-N in effluent are 18.73 mg·L^-1,0.66 mg·L^-1,2.74 mg·L^-1,and 0.7 mg·L^-1,respectively.According to China's relevant national standards,the removal effects on COD and NH₄⁺-N can reach Class III standards for surface water,and the removal effects on TN and TP can reach the first level A standard and the first level B standard,respectively.The device has a lot of room for improvement in the removal effect of TP and NH₄⁺-N.In addition,the device has more advantages in removing pollutants than constructed wetlands.