海绵铁/微生物协同互促除磷研究  

Mechanism of Cooperative Phosphorus Removal by Sponge Iron and Microorganisms

作　　者：李杰[1] 李文譞 魏志勇[1] 李鸯[1] 王霞[1] 

机构地区：[1]兰州交通大学环境与市政工程学院,甘肃兰州730070 [2]同济大学环境科学与工程学院,上海200092

出　　处：《中国给水排水》2013年第23期124-127,共4页China Water & Wastewater

基　　金：国家自然科学基金资助项目(51068015)

摘　　要：通过小试验证了海绵铁与微生物之间存在协同互促除磷作用,采用中试考察了这种作用下对生活污水的除磷效果,并对其作用机制进行了初步探讨。结果表明,生化反应可加速铁的电化学腐蚀过程,铁细菌则作为铁氧化的驱动力,强化Fe(Ⅱ)向Fe(Ⅲ)的化学氧化过程,Fe(Ⅲ)的化学沉淀是除磷的主要形式,同时也存在聚磷菌的吸附除磷作用;生活污水在零价铁与活性污泥协同除磷作用下,最终出水TP可降至0.5 mg/L以下,这为现有污水处理厂除磷工艺的升级改造提供了新思路。The cooperative phosphorus removal effects of sponge iron and microorganisms were verified in the lab-scale test, and the cooperative phosphorus removal effect and its mechanism were investigated in the pilot-scale test. The results showed that the biochemical reaction accelerated the iron electro chemical corrosion; as a driving force, iron bacteria strengthened the chemical oxidation of Fe （ Ⅱ ） to Fe （Ⅲ） ; the chemical precipitation of Fe（m） was the main form of phosphorus removal, in addition, there existed adsorption phosphorus removal of phosphate-accumulating organisms （PAOs） ; and the total phosphorus concentration of effluent could drop to less than 0.5 mg/L, which provided a new idea for upgra- ding phosphorus removal process in sewage treatment plants.

关 键 词：海绵铁 铁细菌 除磷 作用机制 

分 类 号：X703[环境科学与工程—环境工程]