Bioreduction of nitrate in groundwater using a pilot-scale hydrogen-based membrane biofilm reactor

作     者：Youneng TANG Michal ZIV-EL Chen ZHOU Jung Hun SHIN Chang Hoon AHN Kerry MEYER Daniel CANDELARIA David FRIESE Ryan OVERSTREET Rick SCOTT Bruce ERITTMANN 

作者机构：Center for Environmental BiotechnologyBiodesign Institute at Arizona State UniversityTempeAZ 85287USA CH2M HillEnglewoodCO 80112USA Applied Process TechnologyInc.Pleasant HillCA 94523USA City of GlendaleGlendaleAZ 85303USA 

出 版 物：《Frontiers of Environmental Science & Engineering》 (环境科学与工程前沿（英文）)

年 卷 期：2010年第4卷第3期

页      面：280-285页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 

基　　金：City of Glendale Water Research Foundation, WRF, (4131) 

主　　题：denitrification groundwater treatment hydrogen membrane biofilm reactor(MBfR) polyester fiber 

摘      要：A long-term pilot-scale H_(2)-based membrane biofilm reactor(MBfR)was tested for removal of nitrate from actual groundwater.A key feature of this secondgeneration pilot MBfR is that it employed lower cost polyester hollow fibers and still achieved high loading *** steady-state maximum nitrate surface loading at which the effluent nitrate and nitrite concentrations were below the Maximum Contaminant Level(MCL)was at least 5.9 g·N·(m^(2)·d)^(–1),which corresponds to a maximum volumetric loading of at least 7.7 kg·N·(m^(3)·d)^(–1).The steady-state maximum nitrate surface area loading was higher than the highest nitrate surface loading reported in the firstgeneration MBfRs using composite fibers(2.6 g·N·(m^(2)·d)^(–1)).This work also evaluated the H_(2)-utilization efficiency in *** measured H_(2)supply rate was only slightly higher than the stoichiometric H_(2)-utilization ***,H_(2)utilization was controlled by diffusion and was close to 100%efficiency,as long as biofilm accumulated on the polyester-fiber surface and the fibers had no leaks.