Wang Ya'e, Li Jie, Zhai Siyuan, Wei Zhiyong, Feng Juanjuan
School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu, China E-mail:
Water Sci Technol. 2015;72(8):1257-65. doi: 10.2166/wst.2015.323.
The collaborative and mutually reinforcing phosphorus removal in domestic wastewater in a sponge iron and microorganisms system was studied through a laboratory and a pilot scale experiment. The results showed that the total phosphorus concentration of the effluent of less than 0.5 mg/L could be achieved. The results also support that the biochemical reaction accelerated the iron electrochemical corrosion. As a driving force, iron bacteria strengthened the chemical oxidation of Fe(II) to Fe(III). The chemical precipitation of Fe(III) is the main form of phosphorus removal. In addition, there exists adsorption phosphorus removal by phosphate-accumulating organisms. The mechanism of the enhanced phosphorus removal by microbial-collaborating sponge iron was thus proposed.
通过实验室和中试规模实验，研究了海绵铁与微生物系统中生活污水协同增效除磷效果。结果表明，出水总磷浓度可达到0.5mg/L以下。结果还证实生化反应加速了铁的电化学腐蚀。铁细菌作为驱动力强化了Fe(II)向Fe(III)的化学氧化。Fe(III)的化学沉淀是除磷的主要形式。此外，聚磷菌存在吸附除磷作用。由此提出了微生物协同海绵铁强化除磷的机制。
