The treatment performance and nutrient removal of a garden land infiltration system receiving dairy farm wastewater
文献类型： 外文期刊
作者： Duan, Jingjing 1 ; Geng, Chenguang 2 ; Li, Xun 2 ; Duan, Zengqiang 2 ; Yang, Linzhang 1 ;
作者机构： 1.Jiangsu Acad Agr Sci, Inst Agr Resources & Environm, Nanjing 210014, Jiangsu, Peoples R China
2.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Jiangsu, Peoples R China
关键词： Garden land infiltration system;Ecological treatment;Subsurface drainage;Livestock wastewater;Ryegrass
期刊名称：AGRICULTURAL WATER MANAGEMENT （ 影响因子：4.516； 五年影响因子：5.12 ）
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收录情况： SCI
摘要： Livestock wastewater is a major source of agricultural non-point pollution. Land treatment system is appropriate for livestock sewage treatment due to its low construction cost and high treatment performance. In this study, a garden land infiltration system (GLIS) was established to treat dairy farm wastewater. Our main concern was nutrient removal and plant uptake when the system is in operation. The removal rates in the outflow water of suspended solids (SS), NH4+-N, total N (TN), total P (TP), chemical oxygen demand (COD), and total organic carbon (TOC) were 86.1%, 78.0%, 78.2%, 94.6%, 76.8%, and 74.6%, respectively. Approximately 79.4-81.6 kg/ha of nitrogen and 9.1-13.1 kg/ha of phosphorus were removed from the system by ryegrass harvesting, which accounted for 14.5-14.9% and 17.0-24.6% of the TN and TP in the effluent, respectively. These results demonstrate that the system has the advantage of high performance efficiency and has the potential for greater nutrient removal by plant uptake. Therefore, a GLIS can be considered as a viable alternative for dairy farm wastewater treatment in rural areas. (C) 2014 Elsevier B.V. All rights reserved.
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