Adsorption performance of local materials in Tibet for
nitrogen and phosphorous in sewage
1.School of Environment and Safety Engineering, Jiangsu University， Zhenjiang， Jiangsu 212013， China； 2.Institute of Environmental Science of Tibet Autonomous Region， Lhasa， Tibet 850000， China
Abstract：The adsorption performance of spring stone, iron slag and porous air brick from Tibet for ammonia nitrogen and phosphorus in sewage were investigated by experiments. Freundlich model and Langmuir model were used to fit adsorption isotherm equation experimental results. The results show that the decreased sequence of saturated adsorption capacity of G0 for ammonia nitrogen is porous air brick, iron slag and spring stone, which is the same for phosphorus. The substrate adsorption saturation and latter precipitation experiments show that the ammonia nitrogen absorbance of porous air brick is large with high adsorption efficiency, and the precipitation quantity after saturation is low. The ammonia nitrogen capacities of iron slag and spring stone are low, while the precipitation percent after saturation is low. The decreased sequence of phosphorus adsorption capacity is porous air brick, iron slag and spring stone minimum, while the quantity and the percentum of precipitation after saturation are both low. The precipitation of ammonia nitrogen and phosphorus occurs in the three substrates, which may lead to secondary pollution of water body in actual application.
解清杰, 杜甫义, 张学文, 阿琼, 白玛旺堆. 西藏地方材料对污水中氮磷的吸附性能[J]. 江苏大学学报（自然科学版）, 2015, 36(6): 739-744.
JIE Qing-Jie, DU Fu-Yi, ZHANG Xue-Wen, A-Qiong, Bai-Ma-Wang-Dui. Adsorption performance of local materials in Tibet for
nitrogen and phosphorous in sewage[J]. Journal of Jiangsu University(Natural Science Eidtion)
, 2015, 36(6): 739-744.
2015, Vol. 36 
