摘要
主要研究草炭土在修复地下水石油烃过程中水化学因子的变化规律，实验选取Fe3＋、Mn2＋、SO4^2-、Ca2、Mg2＋、NH4＋、HPO4^2-、NO3-离子进行相关研究，实验结果表明草炭土对于水化学因子有一定的改变作用，对Ca2’的去除率稍低在58．77％～66．50％之间，Mn2＋、NH＋、Mg2＋、NO3-的去除率均大于80％，而SO4^2-、Fe3＋、HPO4^2-几乎被全部去除，去除率均大于97％。SO4^2-、NH4＋、NO3-对草炭土吸附石油烃具有促进作用，Ca2＋对草炭土吸附石油烃具有抑制作用，较低浓度的HPO4^2-不利于草炭土去除石油烃，Fe3＋、Mn2＋、Mg2＋对草炭土吸附石油烃影响不明显，8种离子对草炭土吸附石油烃的影响随浓度改变。
This paper mainly studies the variation law of hydro-chemical factors during repair process of the peat soil for petroleum hydrocarbons in groundwater. In the experiments, the elements of Fe3＋、Mn2＋、SO4^2-、Ca2、Mg2＋、NH4＋、HPO4^2-、 , and NO3- are chosen to conduct the research. The results show that the peat soil has a certain effect on the changes of water chemical faetors; the removal rate of Ca2＋ is between 58. 77% to 66. 50%, that of Mn2＋ , NH4＋ ,Mg2＋ , NO3- is greater than 80%, while Fe3＋ , SO4^2-, HPO4^2- are almost completely removed and the removal rates are more than 97%. The SO4^2- ,NH＋ , and NO2 have promotion effect on the adsorption of the peat soil for petroleum hydrocarbons, while Ca2＋ has the inhibition effect on the adsorption of the peat soil for petroleum hydroearbons; HPO4^2- with lower concentration is not conducive for the removal of petroleum hydrocarbons, the Mn2＋ , Mg2＋ have no significant effects on it. The effects of the eight kinds of ions on the adsorption of the peat soil for petroleum hydrocarbons change with the concentration.
出处
《节水灌溉》
北大核心
2014年第7期54-57,共4页
Water Saving Irrigation
基金
国家自然科学基金(41203050)
中国地调局地质调查项目(1212011140036)
关键词
草炭土
水化学因子
石油烃
去除率
吸附量
peat soil
hydro-chemical factors
petroleum hydrocarbons
removal rate
adsorption capacity
