Title :
Study on the characteristics of fillings in soil trench system
Author :
Xu, Dongyong ; Zhou, Beihai ; Ma, Fangshu ; Guo, Jiajia ; Wang, Hexiang ; Zhao, Ming ; Wang, Jinglin ; Duan, Xuexin ; Duan, Yunsong
Author_Institution :
Dept. of Environ. Eng., Univ. of Sci. & Technol. Beijing, Beijing, China
Abstract :
Soil trench system is an important way to phosphorus and nitrogen removal by the combination of physical, chemical and biological degradation processes. The specific surface, osmosis, saturation water holdup, cost , adsorption and desorption capacity of four fillings (red soil, sand, coal fly-ash and carbonized rice hull) in soil trench system were analyzed. Taking the removal effect, useful time, construction cost and clogging problem into consideration, the mode of the quantity of four fillings in soil trench system should follow "red soil>;coal fly-ash>;carbonized rice hull>;sand".
Keywords :
agricultural products; environmental degradation; fly ash; nitrogen; phosphorus; soil pollution; adsorption capacity; biological degradation process; chemical degradation process; clogging problem; desorption capacity; filling characteristics; nitrogen removal; phosphorus removal; physical degradation process; saturation water; soil trench system; Agriculture; Coal; Filling; Hazardous materials; Isothermal processes; Presses; Soil; carbonized rice hull; coal fly-ash; red soil; sand; soil trench;
Conference_Titel :
Electric Technology and Civil Engineering (ICETCE), 2011 International Conference on
Conference_Location :
Lushan
Print_ISBN :
978-1-4577-0289-1
DOI :
10.1109/ICETCE.2011.5775804
