鸟粪石结晶法在厌氧消化液脱氮除磷中的应用进展

The Progress of Application of Struvite Crystallization Process to Removal of Nitrogen and Phosphorus in Anaerobically Digested Liquor

鸟粪石结晶法是1种能同时回收废水中氮源和磷源的处理方法。总结了鸟粪石的形成机理、颗粒形态和形成的影响因素,着重探讨了厌氧消化条件下鸟粪石形成条件的变化。介绍了采用鸟粪石结晶法处理实际废水的相关研究,并对其经济效益做了评估。对鸟粪石结晶技术的未来研究方向进行了展望,提出了国内鸟粪石结晶技术研究的必要性和可行性。

Struvite crystallization process is a technology to recover both nitrogen and phosphorus from anaerobically digested liquor.The growth mechanism and factors affecting the granular morphology and formation of struvite were summarised.In particular,changes in the formation of struvite under a condition of anaerobic digestion were discussed.Relevant researches on practical treatment of wastewater by the struvite crystallization process were presented,and its economic effectiveness was evaluated as well.In a view of the future development orientation of the struvite crystallisation technology,the necessity and practicability of its research in China have been raised.