• 标题：Continuous treatment of abandoned mine wastewater containing As and Fe using Mg–Al layered double hydroxides with flocculation
• 关键词：Mg–Al layered double hydroxides; Mine wastewater; Continuous treatment; Heavy metals
• 作者：

全文下载

In this study, we conducted a continuous wastewater treatment of an abandoned mine site in Japan to remove As and Fe using Mg–Al layered double hydroxides followed by flocculation and with Ca(OH) 2 for comparison. The combination of flocculant ACCOFLOC?A-110 obtained low As and Fe residual concentration, suspended solids, and sludge volume and improved treatment performance by solely layered double hydroxides. Results of continuous wastewater treatment showed that post-treated water conformed with the Japanese Uniform National Effluent Standards for pH, concentration of As, Fe, and suspended solids amount. Compared with treatment using Ca(OH) 2 , treatment using layered double hydroxides was able to reduce the volume of hydrous sludge with a lower water content and also showed a possibility to reduce transportation cost of sludge based on cost calculation.