title: Pollutants removal in subsurface infiltration systems by shunt distributing wastewater with/without intermittent aeration under different shunt ratios.
abstract: Matrix dissolved oxygen (DO), removal of COD, TP and nitrogen in subsurface infiltration systems (SISs), named SIS A (without intermittent aeration and shunt distributing wastewater), SIS B (with shunt distributing wastewater) and SIS C (with intermittent aeration and shunt distributing wastewater) were investigated. Aerobic conditions were developed in 50cm depth and anoxic or anaerobic conditions were not changed in 80 and 110cm depth by intermittent aeration. Under appropriate shunt ratios, shunt distributing wastewater improved denitrification and had little influence on COD, TP and NH3-N removal. Under the optimal shunt ratio of 1:2 for SIS C, high average removal rates of COD (90.06%), TP (93.17%), NH3-N (88.20%) and TN (85.79%) were obtained, which were higher than those in SIS A (COD: 82.56%, TP: 92.76%, NH3-N: 71.08%, TN: 49.24%) and SIS B (COD: 81.12%, TP: 92.58%, NH3-N: 69.14%, TN: 58.73%) under the optimal shunt ratio of 1:3.
authors.affiliation: College of Life Science, Shenyang Normal University, Shenyang 110034, China. Electronic address: crystalpan78@126.com.
authors.forename: Jing
authors.initials: J
authors.lastname: Pan
authors.affiliation: College of Life Science, Shenyang Normal University, Shenyang 110034, China.
authors.forename: Fang
authors.initials: F
authors.lastname: Yuan
authors.affiliation: College of Life Science, Shenyang Normal University, Shenyang 110034, China.
authors.forename: Yang
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: College of Life Science, Shenyang Normal University, Shenyang 110034, China.
authors.forename: Linli
authors.initials: L
authors.lastname: Huang
authors.affiliation: Experiment Center, Shenyang Normal University, Shenyang 110034, China.
authors.forename: Long
authors.initials: L
authors.lastname: Yu
authors.affiliation: College of Life Science, Shenyang Normal University, Shenyang 110034, China.
authors.forename: Fanping
authors.initials: F
authors.lastname: Zheng
authors.affiliation: College of Life Science, Shenyang Normal University, Shenyang 110034, China.
authors.forename: Fan
authors.initials: F
authors.lastname: Cheng
authors.affiliation: College of Life Science, Shenyang Normal University, Shenyang 110034, China.
authors.forename: Jiadi
authors.initials: J
authors.lastname: Zhang
mesh_terms: D000332:Aerobiosis; D000641:Ammonia / Q000737:chemistry; D057919:Biological Oxygen Demand Analysis; D058440:Denitrification; D004867:Equipment Design; D009584:Nitrogen / Q000302:isolation & purification; D010100:Oxygen; D014865:Waste Disposal, Fluid / Q000295:instrumentation* / Q000379:methods*; D062065:Wastewater / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*
chemical_list: D000641:Ammonia; D009584:Nitrogen; D010100:Oxygen; D062065:Wastewater; D014874:Water Pollutants, Chemical
keywords: Intermittent aeration; Shunt distributing wastewater; Shunt ratios; Subsurface infiltration system