کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
582127 | 1453165 | 2009 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of amended soil and hydraulic load on enhanced biological nitrogen removal in lab-scale SWIS
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بهداشت و امنیت شیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
To characterize the effect of amended soil on nitrogen removal in subsurface wastewater infiltration system (SWIS), culture, grass carbon, and zeolite were mixed to produce microbial inoculums, and then the optimal microbial inoculums, nutrient substance, cinder, and original soil were mixed to produce the soils through bioaugmentation. Results indicate that the microbial inoculums (culture + 50% grass carbon + 50% zeolite) and the amended soil (12.5% microbial inoculums + 25% nutrient substrate + 12.5% cinder + 50% original soil) have the optimal biogenic stimulating properties, and the adsorption capacity of the amended soil are 1.216 mg-P gâ1 and 0.495 mg-N gâ1. The laboratory soil column experiment indicates that the efficient mode of nitrogen removal in lab-scale SWIS is adsorption-nitrification-denitrification and the nitrification/denitrification can be enhanced by the application of the amended soil. On average, the SWIS filled with amended soil converts 85% of ammonia nitrogen (NH4+-N) to NOxâ-N and removes 49.8-60.6% of total nitrogen (TN), while the system filled with original soil removes 80% of NH4+-N and 31.3-43.2% of TN at 4-8 cm dayâ1. Two systems are overloads at 10 cm dayâ1. It is concluded that the microbial activities and nitrogen removal efficiencies are improved in SWIS after bioaugmentation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 163, Issues 2â3, 30 April 2009, Pages 816-822
Journal: Journal of Hazardous Materials - Volume 163, Issues 2â3, 30 April 2009, Pages 816-822
نویسندگان
J.L. Zou, Y. Dai, T.H. Sun, Y.H. Li, G.B. Li, Q.Y. Li,