Gorazda Katarzyna, Tarko Barbara, Wzorek Zbigniew, Kominko Halyna, Nowak Anna K, Kulczycka Joanna, Henclik Anna, Smol Marzena
Institute of Inorganic Chemistry and Technology, Cracow University of Technology, Ul. Warszawska 24, Kraków, Poland.
Cracow University of Science and Technology, Ul. Gramatyka 10, Kraków, Poland.
Environ Res. 2017 Apr;154:171-180. doi: 10.1016/j.envres.2017.01.002. Epub 2017 Jan 10.
Sustainable development and circular economy rules force the global fertilizer industry to develop new phosphorous recovery methods from alternative sources. In this paper a phosphorus recovery technology from Polish industrial Sewage Sludge Ashes was investigated (PolFerAsh - Polish Fertilizers form Ash). A wet method with the use of mineral acid and neutralization was proposed. Detailed characteristic of SSA from largest mono-combustion plans were given and compared to raw materials used on the market. The technological factors associated with such materials were discussed. The composition of the extracts was compared to typical industrial phosphoric acid and standard values characterizing suspension fertilizers. The most favorable conditions for selective precipitation of phosphorus compounds were revealed. The fertilizers obtained also meet EU regulations in the case of the newly discussed Cd content. The process was scaled up and a flow mass diagram was defined.
可持续发展和循环经济规则迫使全球化肥行业开发从替代来源回收磷的新方法。本文研究了从波兰工业污水污泥灰中回收磷的技术（PolFerAsh——波兰灰分肥料）。提出了一种使用无机酸和中和的湿法。给出了来自最大单燃烧厂的SSA的详细特性，并与市场上使用的原材料进行了比较。讨论了与这些材料相关的技术因素。将提取物的成分与典型工业磷酸和表征悬浮肥料的标准值进行了比较。揭示了磷化合物选择性沉淀的最有利条件。就新讨论的镉含量而言，所获得的肥料也符合欧盟法规。该工艺进行了放大，并确定了流程质量图。
