摘要
基于我国磷资源的短缺和城市污泥处理处置的现状,针对磷元素的流动特性,分析了城市污泥中磷回收的必要性。探讨了污泥中磷由固相释放至液相的厌氧消化法、臭氧氧化法、热处理法、超声波溶胞法和焚烧溶出法等方法,并对回收污泥中磷的化学沉淀法、吸附解析法、焚烧热处理法、纳滤法等的原理和研究现状进行了综述,对城市污泥中磷释放与回收技术的研究、开发与应用前景进行了展望,为城市污泥中磷的资源化回收利用提供指导。
Based on the shortage of phosphorus resources, the status of sewage sludge disposal and the flow characteristics of phosphorus in life, the necessity of recycling phosphorus from sewage sludge is analyzed. The methods of releasing phosphorus by solid phase to liquid phase from sewage sludge were discussed, such as anaerobic digestion, ozone oxidation, heat treatment, ultrasonic dissolution and burning extraction, etc. Furthermore, the theories and research status of methods in recovering phosphorus from sewage sludge were summarized, including chemical precipitation, adsorption-desorption, burning heat treatment and nanofiltration. Finally, the research, development and application prospects of release-recovery technology of phosphorus from sewage sludge were discussed.
出处
《能源环境保护》
2014年第1期8-12,共5页
Energy Environmental Protection
基金
广东省科技计划项目(2010B031700023
2010B0204130 03)
佛山市产学研专项(2011BC100051)
中山大学先进技术研究院项目(900353283324)
高校基本科研业务费(2010380003161540)资助
关键词
城市污泥
磷资源
磷释放
磷回收
sewage sludge
phosphorus resources
phosphorus release
phosphorus recovery
