Review on simultaneous nitrogen and phosphorus removal technologies

doi:10.11894/iwt.2018-0901

Abstract

Abstract:

To avoid the eutrophication of the water bodies, nitrogen and phosphorus removal must be carried out before the sewage is discharged. Compared with the traditional removal technologies, the new simultaneous nitrogen and phosphorus removal technologies have the characteristics of low energy consumption and small footprint, leading to a new engineering application direction in the field of sewage treatment. This peper introduces the principles, characteristics and influencing factors of four types of simultaneous nitrogen and phosphorus removal technologies, including biological method, physical chemical method, bioelectrochemical method and biological induced mineralization method. As a new bio-mineral crystal coupling treatment technology, bio-induced mineralization method has great advantages in reducing operating cost and recovering phosphorus resource, and thus becomes a research hotspot in the field of nitrogen and phosphorus removal in wastewater.

Key words: simultaneous nitrogen and phosphorus removal, biological method, physical chemical method, biological induced mineralization method, phosphorus recovery

摘要：

为避免造成水体富营养化，污水排放前必须进行脱氮除磷处理。与传统技术相比，新型同步脱氮除磷技术具有能耗低、占地小等特点，是污水处理领域中新的工程应用方向。介绍了生物法、物理化学法、生物电化学法和生物诱导矿化法4类同步脱氮除磷技术的原理、特点及影响因素。其中，生物诱导矿化法作为新型的生物-矿物结晶耦合处理技术，在降低运行成本和磷资源回收方面具有较大的优势，成为污水脱氮除磷领域的研究热点。

关键词: 同步脱氮除磷, 生物法, 物理化学法, 生物诱导矿化, 磷回收

CLC Number:

X703

Lan Lin, Yanlong Zhang, Wenzhi Cao, Tong Ouyang. Review on simultaneous nitrogen and phosphorus removal technologies[J]. Industrial Water Treatment, 2019, 39(10): 7-13.

林岚, 张彦隆, 曹文志, 欧阳通. 同步脱氮除磷技术研究进展[J]. 工业水处理, 2019, 39(10): 7-13.

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技术方法	生物法	物理化学法	生物电化学法	生物诱导矿化法
优点	处理效果好，处理成本低，技术较为成熟	去除速度快，操作方便	处理的同时产能，环境友好	去除效率高，磷回收率高，节约能源及药剂成本
缺点	对环境条件要求较高，脱氮除磷过程存在竞争关系，驯化培养微生物耗时	处理成本高，容易造成二次污染	技术不够成熟，应用难度大	对环境条件要求较高，技术不够成熟
药剂投加	需要，主要是pH调节剂	需要，吸附剂或沉淀剂	不需要	构晶离子
碳源投加	需要	不需要	不需要	反硝化聚磷需要，厌氧氨氧化不需要
电力消耗	较大，主要用于曝气、温度和光照调节等	较小，主要用于搅拌	较小，主要用于曝气	较小，主要用于曝气和温度调节

技术方法	生物法	物理化学法	生物电化学法	生物诱导矿化法
优点	处理效果好，处理成本低，技术较为成熟	去除速度快，操作方便	处理的同时产能，环境友好	去除效率高，磷回收率高，节约能源及药剂成本
缺点	对环境条件要求较高，脱氮除磷过程存在竞争关系，驯化培养微生物耗时	处理成本高，容易造成二次污染	技术不够成熟，应用难度大	对环境条件要求较高，技术不够成熟
药剂投加	需要，主要是pH调节剂	需要，吸附剂或沉淀剂	不需要	构晶离子
碳源投加	需要	不需要	不需要	反硝化聚磷需要，厌氧氨氧化不需要
电力消耗	较大，主要用于曝气、温度和光照调节等	较小，主要用于搅拌	较小，主要用于曝气	较小，主要用于曝气和温度调节

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