Study on Recovery Source of Phosphorus from Toilet Water by Electrochemistry

2nd International Symposium on Resource Exploration and Environmental Science

生态环境科学

Li, Gang^1 ; Hao, Yanyu^1 ; Qi, Lun^2 ; Li, Yansheng^1

School of Environmental and Chemical, Dalian Jiaotong University, Dalian

116028, China^1

Environmental Monitoring Station, LiaoYang, 111000, China^2

关键词: Cathode and anode;    Electrochemical recovery;    Flow ratios;    Phosphorus recovery;    Recovery rate;    Secondary pollution;    Velocity ratio;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/170/3/032128/pdf
DOI  :  10.1088/1755-1315/170/3/032128

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The phosphorus resources in our country have accounted for second of the whole world, but it is predicted that the recoverable phosphorus resources can only be supplied by 2020. However sewage only account for about 1∼ 2% in the entire volume of sewage waste, sewage contains 90% phosphorus.Electrolysis is a promising technology for simulated urine treatment,with adding magnesium source.In this way,it doesn't have secondary pollution in case of recovery of phosphorus, while reducing the pressure on sewage treatment plant. Results show that the electrochemical recovery of phosphorus in urine is feasible, the phosphorus recovery rate increases over time. The velocity ratio and the magnesium source storage loading position can enhance the conversion capacity of magnesium to Mg2+, promote recycling of phosphorus, when flow ratio of cathode and anode water is 58:1, the recovery rate of phosphorus in the cathode is 70% above, the recovery rate of anode is more than 90%.