Evaluating the effects of intermittent aeration and biochar addition on enhancing removal performance of subsurface wastewater infiltration systems with loess soil

被引：14
作者：
Liang C. [1 ,2 ]
Li Y. [3 ]
Chai B. [3 ,4 ]
Wu H. [1 ,2 ]
机构：
[1] College of Natural Resources and Environment, Northwest A & F University, Yangling, 712100, Shaanxi
[2] Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture
[3] Shaanxi Farmland quality and Agricultural Environmental Protection Work Station, Xi'an, 710003, Shaanxi
[4] School of Architecture and Civil Engineering, Xi'an University of Science & Technology, Xi'an, 710054, Shaanxi
来源：
Bioresource Technology Reports | 2019年 / 5卷
基金：
中国国家自然科学基金;
关键词：
Domestic wastewater; Loess soil; Nitrogen removal; Organics removal; Subsurface wastewater infiltration;
D O I：
10.1016/j.biteb.2018.11.010
中图分类号：
学科分类号：
摘要：
Subsurface wastewater infiltration systems (SWISs) have great potential in treating various wastewaters. However, information on the effect of the intermittent aeration and biochar addition on nitrogen removal in SWISs with loess soil is still scarce. This study evaluated the enhanced treatment performance in response to the intermittent aeration and biochar addition in SWISs with loess soil for treating decentralized domestic wastewaters. Higher COD removal (above 91%) was obtained in non-aerated and intermittent-aerated SWISs compared with other SWISs with biochar addition (below 82%). While higher TN removal (85–92%) was found in SWISs with biochar addition. In addition, better removal performances of NH4 +-N (above 96%) and TP (above 98%) were achieved simultaneously in all SWISs. The results indicated that biochar played an important role in improving nitrogen removal in SWISs with a negative effect on organics removal. Moreover, intermittent aeration and biochar addition could significantly reduce the N2O emission in SWISs. © 2018 Elsevier Ltd
引用
收藏
页码：12 / 19
页数：7
相关论文
共 39 条
[1]  
APHA, Standard Methods for the Examinations of Water and Wastewater, (2005)
[2]  
Beal C.D., Gardner E.A., Menzies N.W., Process, performance, and pollution potential: a review of septic tank–soil absorption systems, Aust. J. Soil Res., 43, pp. 781-802, (2005)
[3]  
Brooks A.S., Rozenwald M.N., Geohring L.D., Phosphorus removal by wollastonite: a constructed wetland substrate, Ecol. Eng., 15, pp. 121-132, (2000)
[4]  
De Rozari P., Greenway M., El Hanandeh A., An investigation into the effectiveness of sand media amended with biochar to remove BOD5, suspended solids and coliforms using wetland mesocosms, Water Sci. Technol., 71, pp. 1536-1544, (2015)
[5]  
Ding Y., Liu Y.X., Wu W.X., Shi D.Z., Yang M., Zhong Z.K., Evaluation of biochar effects on nitrogen retention and leaching in multi-layered soil columns, Water Air Soil Pollut., 213, pp. 47-55, (2010)
[6]  
Fan J.L., Zhang B., Zhang J., Ngo H.H., Guo W.S., Liu F.F., Guo Y.Y., Wu H.M., Intermittent aeration strategy to enhance organics and nitrogen removal in subsurface flow constructed wetlands, Bioresour. Technol., 141, pp. 117-122, (2013)
[7]  
Hatt B.E., Fletcher T.D., Deletic A., Treatment performance of gravel filter media: implications for design and application of stormwater infiltration systems, Water Res., 41, 12, pp. 2513-2524, (2007)
[8]  
Heistad A., Paruch A.M., Vrale L., Adam K., Jenssen P.D., A high–performance compact filter system treating domestic wastewater, Ecol. Eng., 28, pp. 374-379, (2006)
[9]  
Jenssen P.D., Krogstad T., Paruch A.M., Maehlum T., Adam K., Arias C.A., Heistad A., Jonsson L., Hellstrom D., Brix H., Yli-Halla M., Vrale L., Valve M., Filter bed systems treating domestic wastewater in the Nordic countries–performance and reuse of filter media, Ecol. Eng., 36, pp. 1651-1659, (2010)
[10]  
Jiang Y.Y., Sun Y.F., Pan J., Qi S.Y., Chen Q.Y., Tong D.L., Nitrogen removal and N<sub>2</sub>O emission in subsurface wastewater infiltration systems with/without intermittent aeration under different organic loading rates, Bioresour. Technol., 244, pp. 8-14, (2017)
1234