结晶法在废水磷资源回收中的应用研究进展
Research progress on the application of crystallization method in phosphorus recovery from wastewater
系统综述了蓝铁矿、HAP和MAP主流结晶法的研究进展,重点分析了其反应原理、关键影响因素、适用废水类型及应用效果。蓝铁矿结晶法适配厌氧体系,通过微生物-矿物协同作用可实现75%~85%的磷回收率;HAP结晶法耐高COD与复杂杂质干扰,借助固废基钙源可实现“以废治废”,磷回收率通常在85%以上;MAP结晶法可同步回收氮磷,鸟粪石产物作为缓释肥具有较高农用价值,磷回收率可达85%~95%。通过对比3类结晶技术的适配场景与技术特性,指出其在成本控制、规模化适配以及产物市场化等方面仍面临共性挑战,未来在低成本资源化、智能调控以及产物高值化与安全性等方面需加强研究,以期为结晶法磷回收技术的低碳、高质发展提供理论参考。
A systematic review was conducted on the research progress of mainstream crystallization methods for vivianite,HAP,and MAP,with a focus on analyzing their reaction principles,key influencing factors,applicable wastewater types,and application effects.The vivianite crystallization method is adapted to anaerobic systems and can achieve a phosphorus recovery rate of 75%-85% through microbe-mineral synergy.The HAP crystallization method is resistant to high COD and complex impurities interference,and can achieve“waste treatment by waste” with the help of solid waste-based calcium sources.The phosphorus recovery rate is usually above 85%.The MAP crystallization method can simultaneously recover nitrogen and phosphorus,and the struvite products have high agricultural value as slow-release fertilizers,with a phosphorus recovery rate of 85%~95%.By comparing the adaptation scenarios and technical characteristics of three types of crystallization technologies,it is pointed out that they still face common challenges in cost control,scale adaptation,and product marketization.In the future,research needs to be strengthened in low-cost resource utilization,intelligent regulation,and high-value and safety products,in order to provide theoretical reference for the low-carbon and high-quality development of phosphorus recovery technology based on crystallization based.
含磷废水 / 磷回收 / 蓝铁矿 / 羟基磷灰石 / 鸟粪石
phosphorus-containing wastewater / phosphorus recovery / vivianite / hydroxyapatite / struvite
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山东省重点研发计划项目(2017GSF16108)
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