Phosphorus Atlas Research Institute, Waseda University, Wakamatsu-cho 2-2, Shinjuku-ku, Tokyo, 162-0056, Japan.
Department of Biotechnology, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka, 565-0871, Japan.
Ambio. 2018 Jan;47(Suppl 1):83-92. doi: 10.1007/s13280-017-0976-9.
A simple technology for phosphate (P ) recovery has been developed using a bifunctional adsorption-aggregation agent. The bifunctional agent was prepared by soaking calcium silicates in hydrochloric acid solution. Importantly, recyclable calcium silicates were available almost free of charge from the cement industry and also from the steel industry. The acid treatment was essential not only for enhancing the ability of calcium silicates to remove P from aqueous solution but also for enabling the high settleability of removed P . On-site experiments using a mobile plant showed that approximately 80% P could be recovered from anaerobic sludge digestion liquor at a wastewater treatment plant. This technology has the potential to offer a simple, compact service for recycling P from wastewater to farmland in rural areas.
使用双功能吸附-聚集剂开发了一种简单的磷酸盐（P）回收技术。双功能试剂是通过将硅酸钙浸泡在盐酸溶液中制备的。重要的是，可回收的硅酸钙几乎可以免费从水泥工业和钢铁工业获得。酸处理不仅对于增强硅酸钙从水溶液中去除 P 的能力是必要的，而且对于使去除的 P 具有高沉降性也是必要的。在污水处理厂使用移动设备进行的现场实验表明，大约 80%的 P 可以从厌氧污泥消化液中回收。这项技术有可能为农村地区从废水中向农田回收 P 提供一种简单、紧凑的服务。
