摘要
为探究两种不同基质的电解强化潜流人工湿地对氮磷污染物的净化效果差别以及两种不同基质的电解强化潜流人工湿地的最适电流强度,构建了以沸石为基质的湿地系统A和以砖块为基质的湿地系统B,以及各自的空白a、b。在启动阶段,A对氨氮的去除效果显著高于B,说明使用沸石为基质对电解强化潜流人工湿地的氨氮去除效果更优。稳定运行阶段时,B的总氮最大去除率只达到A最大去除率的一半,说明以沸石为基质的电解强化潜流人工湿地在脱氮效果上更明显。在稳定运行阶段,A和B对磷的去除效果会随着电流强度的增强而不断变大,当电流强度为100mA时,两系统中磷的去除率均达到最大值。而对氮的去除效果则是:当A在电流强度为30mA时,氮的去除率最高,而B在电流强度为50mA时,氮的去除率最高,且两系统在达到最佳电流强度后,随着电流强度的增加,两系统对氮的去除能力均会下降。综合分析,A的最佳运行电流强度为30 mA,而B的最佳运行条件为50 mA。
To explore the differences in purification effect of two different fillers on nitrogen and phosphorus pollutants, and the optimal current intensity of two different fillers, wetland system A based on zeolite and wetland system B based on bricks were constructed, taken blank check a and b as the controls. At the start-up stage, the removal effect of ammonia nitrogen by system A was significantly higher than that by system B, which indicated that using zeolite as the base material to remove ammonia nitrogen in electrolysis-enhanced underflow constructed wetland was better. In the stable operation stage, the maximum removal rate of total nitrogen by system B was only half of that by system A, which indicated that the effect of nitrogen removal by electrolysis-enhanced subsurface flow constructed wetland based on zeolite was more obvious. In the stable operation stage, the phosphorus removal efficiency of systems of A and B increased with the increase of current intensity. When the current intensity was 100 mA, the phosphorus removal efficiency of both systems reached the maximum. The nitrogen removal efficiency in system A was the highest when the current intensity was 30 mA, while that in system B was the highest when the current intensity was 50 mA, moreover, when the two systems reached the optimal current intensity, the nitrogen removal capacity of both systems decreased with the increase of current intensity. Comprehensive analysis showed that the optimal operating current intensity in system A and B is 30 and 50 mA, respectively.
作者
钱琪卉
于元超
王皓
王振
巫厚长
钟耀华
QIAN Qihui;YU Yuanchao;WANG Hao;WANG Zhen;WU Houzhang;ZHONG Yaohua(Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention,School of Resources and Environment,Anhui Agricultural University,Hefei 230036;Tea Valley and Beautiful Rural Construction Service Center in Jinzhai County,Jinzhai 237300)
出处
《安徽农业大学学报》
CAS
CSCD
2021年第6期981-988,共8页
Journal of Anhui Agricultural University
基金
安徽省高等学校省级质量工程教学研究项目(2018jyxm0938)
安徽农业大学-金寨县人民政府现代农业产学研联盟专项基金(金政秘[2014]47号)共同资助。
关键词
电解强化人工湿地
基质
电流强度
脱氮除磷
electrolysis-enhanced constructed wetland
filler
current intensity
nitrogen and phosphorus removal
