发酵液中有机质对蓝铁矿结晶回收磷过程及产物的影响

王苏娜; 操家顺; 梁茜娅; 王世龙; 葛冉; 罗景阳; 方芳

doi:10.13205/j.hjgc.202603013

发酵液中有机质对蓝铁矿结晶回收磷过程及产物的影响

doi: 10.13205/j.hjgc.202603013

1. 江苏开放大学建筑工程学院，南京 210036;
2. 河海大学环境学院，南京 210098;
3. 江苏省环境监测中心，南京 210019

基金项目:

国家重点研发计划项目（2022YFA1205603，2022YFA1205604）；江苏省生态环境监测科研基金项目（25A02）；江苏省卓越博士后计划项目（2025ZB849）

详细信息

作者简介:
王苏娜（1996—），女，讲师，主要研究方向为污水处理与资源化利用。wsn171305020029@163.com

通讯作者:
方芳（1982—），女，教授，主要研究方向为污水及固废资源化。ffang65@hhu.edu.cn

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出版历程
- 收稿日期: 2025-11-23
- 网络出版日期: 2026-04-11
- 刊出日期: 2026-03-01

Influence of organic matter in fermentation supernatant on process and products of phosphorus recovery via vivianite crystallization

1. College of Construction Engineering，Jiangsu Open University，Nanjing 210036，China;
2. College of Environment，Hohai University，Nanjing 210098，China;
3. Jiangsu Provincial Environmental Monitoring Center，Nanjing 210019，China

摘要

摘要: 在污水资源化利用过程中，蓝铁矿结晶被认为是一种高效且环保的磷回收技术。然而，在实际磷回收过程中，污泥厌氧发酵上清液中普遍存在的溶解性有机质（DOM）可能干扰蓝铁矿的结晶行为，影响磷的回收效率及产物性质。因此，以多糖、蛋白质、乙酸、丙酸和腐殖质为代表有机质，系统评估了有机质类型与浓度对蓝铁矿结晶的影响，解析了有机质对晶体形貌、结构的影响及互相机制。结果表明，不同类型有机质对蓝铁矿结晶回收磷的抑制程度顺序为腐殖质>蛋白质>丙酸>乙酸>多糖，腐殖质的存在显著降低了磷回收率和晶体粒径，并在晶体表面形成不规则附着物。研究结果为明确发酵液中DOM对蓝铁矿结晶的干扰机制及其调控提供了理论依据，对实际污水中实现高效磷回收具有重要指导意义。
- 磷回收 /
- 蓝铁矿 /
- 有机质 /
- 结晶 /
- 厌氧发酵
Abstract: Vivianite crystallization is recognized as an efficient and environmentally friendly approach for phosphorus recovery in wastewater resource utilization. However， in practical phosphorus recovery processes， the dissolved organic matter （DOM） present in the supernatant of sludge anaerobic fermentation may interfere with vivianite crystallization， thereby affecting both the phosphorus recovery efficiency and the product properties. In this study， polysaccharides， proteins， acetic acid， propionic acid， and humic substances were selected as representative organic matter to systematically assess how their types and concentrations affect vivianite crystallization， and to elucidate their impacts on crystal morphologies and structure as well as the associated interaction mechanisms. The results showed that the inhibitory effects of different types of organic matter on phosphorus recovery via vivianite crystallization followed the order of humic substances > proteins > propionic acid > acetic acid > polysaccharides. The presence of humic substances significantly reduced the phosphorus recovery rate and crystal size， and led to the formation of irregular surface deposits on the crystals. This study provides a theoretical foundation for clarifying the interference mechanism of DOM in vivianite crystallization within fermentation broth and offers insights for its regulation. These findings are of great importance for guiding the optimization of the efficient phosphorus recovery processes in real wastewater systems.
- phosphorus recovery /
- vivianite /
- organic matter /
- crystallization /
- anaerobic fermentation

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