Abstract：The catalyzed iron coupled with biotreatment process is a unique and effective technology for wastewater treatment. During operation period, adhesive layer was easily formed on the surface of catalyzed iron to affect the interface reaction significantly. Scanning electron microscopy, energy dispersive spectrometer, X-ray fluorescence spectroscopy and infrared spectra were used to characterize and analyze the physical and chemical properties of adhesive layer, such as morphologies, microstructure, elements and speciation. Fe, C and O were major elements of the adhesive layer in varied coupling processes. Under aerobic conditions of pure catalyzed iron process, the unconsolidated adhesive layer identified was mainly hydroxyl iron oxides. In the coupled process for phosphorus removal, the compact adhesive layer was amorphous iron corrosion products and easy to adhere organisms. In coupled process for denitrification, the adhesive layer was granular and flocculent, identified for complex iron minerals. The participation of microorganisms promoted the non-crystallization of adhesive layer and enhanced the ability of catalytic iron on organics adsorption. Aeration accelerated the oxidation of iron and the surface renewal rate. Anaerobic condition was favorable to microorganism adhesion.
梁学颖, 马鲁铭, 章智勇. 催化铁与生物耦合工艺条件下表面附着层特征分析[J]. 中国环境科学, 2015, 35(5): 1343-1350.
LIANG Xue-Ying, MA Lu-Ming, ZHANG Zhi-Yong. Characteristics of adhesive layer on the surface of catalyzed iron coupled with biotreatment processess. CHINA ENVIRONMENTAL SCIENCECE, 2015, 35(5): 1343-1350.
