污水厂磷的富集原理与工艺及资源化回收新趋势  

Principle and Technology of Phosphorus Enrichment in WWTP and New Trend of Resource Recovery

作　　者：蒋涛 田晴[1] 李方[1] 杨波[1] 朱艳彬[1] JIANG Tao;TIAN Qing;LI Fang;YANG Bo;ZHU Yanbin(College of Environmental Science and Engineering,Donghua University,Shanghai201620,China)

机构地区：[1]东华大学环境科学与工程学院,上海201620

出　　处：《净水技术》2022年第7期7-16,35,共11页Water Purification Technology

基　　金：国家自然科学基金(21777024);国家重点研发计划(2019YFC0408503);上海市自然科学基金(16ZR1402000)。

摘　　要：面对磷资源耗竭和水体富营养化双重危机,磷的去除与回收已成为当前可持续污水处理与资源回用的热点话题。水体中磷的来源与存在形式决定了从污水厂富集并回收磷的可行性与必要性,磷富集与回收的技术分为生物型与非生物型,生物富磷与结晶法回收联用是目前污水厂实现磷资源回收的主要途径。文中系统总结了污水厂废水处理工艺中(主流工艺)和污泥处理工艺中(侧流工艺)实施磷回收的技术及特点,介绍了部分成熟的磷回收工艺;同时指出磷回收发展的新方向:高附加值产品的研发(蓝铁矿回收、富磷生物质中含磷聚合物提取)、产业化放大与工程化应用(工艺改进、政策支持)。In the face of dual crisis of phosphorus resource exhaustion and waterbody eutrophication,phosphorus removal and recovery has become highly concerned issues in sustainable wastewater treatment and resource recovery.The source and form of phosphorus determine the feasibility and necessity of its enrichment and recovery from wastewater treatment plant(WWTP).The technology of phosphorus enrichment and recovery can be classified into biological and non-biological methods.Biological phosphorus enrichment combined with crystallization is the main way to finish the recovery of phosphorus in WWTP at present.This paper systematically summarizes the technologies and characteristics of phosphorus recovery from mainstream process in wastewater treatment and from sidestream process in sewage sludge treatment.Some feasible technologies in engineering practices are also demonstrated.This review also sheds light on innovative approaches'application of phosphorus recovery,for one thing,the development of high value-added products,which includes recovery of vivianite precipitation and extraction of phosphorated polymer from phosphorus-enriched biomass.For another,industrial amplification and engineering application,which involves the process enhancement and policy inclination.

关 键 词：磷回收 磷形态 生物富集 蓝铁矿沉淀 聚合磷提取 

分 类 号：X703[环境科学与工程—环境工程]