Natural Rock Phosphate: A Sustainable Solution for Phosphorous Removal from Wastewater☆
Natural Rock Phosphate: A Sustainable Solution for Phosphorous Removal from Wastewater☆
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DOI：
10.1016/j.proeng.2016.02.069
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
S. Troesch;D. Esser;P. Molle
中科院分区：
文献类型：
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作者：
S. Troesch;D. Esser;P. Molle
在旨在实现所有沃茨的“良好生态状态”的欧洲水框架指令的应用中，在排放到自然接收体之前，从生活废水中去除磷可能是重要的，特别是对于位于集水区上游或富营养化敏感区的小社区。由于法国的农村社区经常选择使用广泛的处理系统处理废水，例如建造湿地，因为这些自然过程很容易操作，等效的除磷技术已被要求。因此，研究集中在特定反应性材料上的吸附或沉淀机制。在这种情况下，Irstea（法国公共研究机构，前身为Cemagref）与SINT和Epur Nature合作进行的最新研究表明，天然磷酸盐岩（磷灰石）是一种有效和可持续的废水除磷解决方案。Epur Nature（Syntea集团）最近开发了一种填充有磷灰石颗粒的特定过滤器配置并获得专利，以实现高磷去除效率（P流出浓度< 2 mg P/L）。本文对最佳处理的机理和关键因素（磷灰石质量、粒度、动力学）进行了解释和综合。本文还介绍了实验室规模的柱试验结果和几年来首次在工业废水处理厂运行的结果，最后讨论了废水中富磷磷灰石在运行10 ~ 20年后再利用的可能性。
In application of the European Water Framework directive aiming to achieve a “good ecological status” for all waters, phosphorous removal from domestic wastewater can be of importance before discharging into natural receiving bodies, especially for small communities localized upstream of catchment areas or in zones sensitive to eutrophication.As rural communities in France often choose to treat their wastewater with extensive treatment systems such as constructed wetlands, because these natural processes are easy to operate, equivalent P-removal technologies have been asked for. Research has therefore focused on adsorption or precipitation mechanisms on specific reactive materials. In this context, recent studies undertaken by Irstea (French public research institute, formerly Cemagref) in collaboration with SINT and Epur Nature have shown the interest of natural rock phosphate (apatite) as an efficient and sustainable solution for phosphorous removal from wastewater. Epur Nature (Syntea group) has recently developed and patented a specific filter configuration filled with apatite pellets for high phosphorous removal efficiencies (P outflow concentrations < 2 mg P/L). The mechanisms and key factors for an optimal treatment (apatite quality, particle size, kinetics) are explained and synthetized in the paper. The results from lab scale columns and first results rom full scale wastewater treatment plants in operation since several years are also presented.Finally the possible reuse of the apatite enriched with P from wastewater after 10 to 20 years of operation will be discussed.