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净化与资源回收协同的好氧颗粒污泥处理高氮磷废水

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第42卷 期数: 2026年第17期 页码: 1-11 栏目: 出版日期: 2026-09-01
Title:
Synergistic Treatment of High Nitrogen and Phosphorus Wastewater by Aerobic Granular Sludge with Purification and Resource Recovery
作者:
赫俊国1， 许雅晴1， 江伟勋1， 刘新平1， 张宇1， 储昭瑞1， 孙伟2， 常颖2
（1.广州大学 土木与交通工程学院，广东 广州 510006；2.广州市水务投资集团有限公司，广东 广州 510655）
Author(s):
He　Junguo1， Xu　Yaqing1， Jiang　Weixun1， Liu Xinping1， Zhang　Yu1， Chu　Zhaorui1， Sun　Wei2， Chang　Ying2
（1. School of Civil and Transportation Engineering， Guangzhou University， Guangzhou 510006， China； 2. Guangzhou Water Investment Group Co. Ltd.， Guangzhou 510655， China）
关键词:
高氮磷废水;  好氧颗粒污泥;  自生鸟粪石;  资源回收
Keywords:
high-nitrogen and high-phosphorus wastewater;  aerobic granular sludge;  self- generated struvite;  resource recovery
摘要:
针对高氮磷沼液的处理难题与资源化潜力，构建了一种基于镁源投加、诱导鸟粪石原位结晶的好氧颗粒污泥（AGS）系统，同步实现了磷的定向回收与AGS结构的强化。体系内成功自发生成了晶核体，通过XRD、FTIR、XPS等多种表征手段共同证实，该晶核体即为鸟粪石，并进一步揭示了其生长特性规律。另外，该系统还实现了处理与回收的协同增效：一方面，自生鸟粪石作为优质骨架，使实验组AGS的平均沉降速度（54.39 m/h）较空白组提升了81.60%，结构强度显著增强。运行60 d后对COD、氨氮、总氮和总磷的去除率分别可达到95%、100%、70.53%和76.47%。微生物群落分析进一步表明，自生鸟粪石晶核引导颗粒污泥富集了Neomegalonema、Paracoccus等关键功能菌属，这些菌属在鸟粪石提供的微环境中展现出卓越的EPS分泌、脱氮除磷及高离子强度适应能力。另一方面，该系统还具有资源回收潜力，鸟粪石产量为39.81 mg/L，回收鸟粪石的收益是镁剂成本的2.34倍，成功实现了AGS体系处理高负荷废水的同时回收资源的目的。
Abstract:
In response to the treatment challenges and resource utilization potential of high- nitrogen and high-phosphorus biogas slurry, an aerobic granular sludge (AGS) system based on magnesium source addition and induction of struvite in-situ crystallization was constructed, simultaneously achieving the directional recovery of phosphorus and the strengthening of AGS structure. The results showed that a crystal nucleus was successfully and spontaneously generated within the system. Through multiple characterization methods such as XRD, FTIR, and XPS, it was jointly confirmed that this crystal nucleus was struvite, and its growth characteristic law was further revealed. In addition, this system achieved a synergistic effect of treatment and recycling: on the one hand, the self-generated struvite, serving as a high-quality framework, increased the average settlement velocity (54.39 m/h) of AGS in the experimental group by 81.60% compared with the blank group, significantly enhancing the structural strength. After 60 days of operation, the removal rates of COD, ammonia nitrogen, total nitrogen and total phosphorus could reach 95%, 100%, 70.53% and 76.47% respectively. Microbial community analysis further indicated that the granular sludge was enriched with key functional bacterial communities such as Neomegalonema and Paracoccus under the guidance of the self-generated struvite crystal nuclei. These bacterial communities demonstrated outstanding EPS secretion, nitrogen and phosphorus removal, and high ionic strength adaptability in the microenvironment provided by struvite. On the other hand, the output of struvite in the system was 39.81 mg/L. Through input and recovery cost analysis, the revenue from struvite recovery per ton of wastewater was 2.34 times the cost of the magnesium agent, successfully achieving the goal of resource recovery while treating high-load wastewater in the AGS system.

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更新日期/Last Update: 2026-09-01