摘要
针对垃圾渗滤液持续时间长、污染严重、地面处理成本高的特点,开展了麦饭石作为渗透性反应墙(PRB)活性材料的可行性研究。通过单因素及改性方法进行了麦饭石对Mn2+和NH+4-N的吸附性能试验。结果表明,麦饭石吸附Mn2+和NH+4-N的最佳操作条件为:pH值7、振荡频率150 r/min、反应时间2 h、粒径0.55~1.7 mm、投加量5 g/100mL,在此条件下,Mn2+和NH+4-N去除率及吸附量分别为42.89%、19.27%和0.066 mg/g、0.223 mg/g;改性麦饭石能够提高吸附速率,但是吸附量降低,选择阜新天然麦饭石作为PRB活性材料进行垃圾渗滤液中Mn2+和NH+4-N的原位处理可行。
According to the characteristics of leachate are long duration, serious pollution and high treatment cost, feasibility study was carried out about medical stone as the PRB materal. Mn^2＋ and NH4^＋-N were adsorbed by medical stone through the single factor experiment and modified test. The result showed that the optimum environment were： pH value 7, oscillation frequency 150 times per minutes, reaction time 2 h, dosing quantity 5 g/100mL,best sizes of filler particles 0.55-1.7 mm. Under these conditions, the removal rate of Mn2＋ and NI-L＋-N were 42.89%, 19.27% respectively; the adsorption capacity for Mn^2＋ and NH4^＋-N were 0.066 mg/g and 0.223 mg/g. Modification is good for adsorption rate, adsorption capacity decreased. So medical stone is the best adsorption material for leachate.
出处
《非金属矿》
CAS
CSCD
北大核心
2014年第2期63-65,共3页
Non-Metallic Mines
基金
国家自然科学基金(41102157)
