MAP法处理垃圾渗滤液中氨氮的试验研究
|
摘要
垃圾渗滤液成分复杂,具有"高污染、高危害、难处理"的典型特性。采用磷酸铵镁沉淀法(MAP)进行了垃圾渗滤液的处理,探究了各因素对去除率的影响,经正交实验确定了优化反应条件及各因素的影响作用。优化工艺条件为:pH值9.5, n(Mg2+)∶n(PO43-)∶n(NH4+)=1.2∶1.0∶1.0,反应时间为20 min,NH3-N去除率为98.13%。各因素对NH3-N去除率影响的大小依次为:pH值>n(PO43-)∶n(NH4+)>n(Mg2+)∶n(NH4+)>反应时间。
Landfill leachate is a complex organic wastewater with typical characteristics, such as high pollution, high risk and difficult to handle, etc. In this paper, the effect of various factors on the removal rate of landfill leachate was studied by using map process. The optimal reaction conditions and the effects of various factors were determined by orthogonal experiment. The experimental results showed that the optimum process conditions were as follows : pH = 9. 5; n(Mg2+)∶n(PO43-)∶n(NH4+)=1.2∶1.0∶1.0; and reaction time was of20 min. Under these conditions, the removal rate of NH3-N was of 98.13%; the influence of various factors on the removal of NH3-N was: pH>n(PO43-)∶n(NH4+)>n(Mg2+)∶n(NH4+)> reaction time.
Landfill leachate is a complex organic wastewater with typical characteristics, such as high pollution, high risk and difficult to handle, etc. In this paper, the effect of various factors on the removal rate of landfill leachate was studied by using map process. The optimal reaction conditions and the effects of various factors were determined by orthogonal experiment. The experimental results showed that the optimum process conditions were as follows : pH = 9. 5; n(Mg2+)∶n(PO43-)∶n(NH4+)=1.2∶1.0∶1.0; and reaction time was of20 min. Under these conditions, the removal rate of NH3-N was of 98.13%; the influence of various factors on the removal of NH3-N was: pH>n(PO43-)∶n(NH4+)>n(Mg2+)∶n(NH4+)> reaction time.
引文
[1]张一澜.对中国城市生活垃圾分类的思考及建议[J].再生资源与循环经济,2016,9(3):26-29.
[2]Rowe R K,Yu Y.Clogging of finger drain systems in MSW landfills[J].Waste Management,2012,32(12):2 342-2 352.
[3]Amor C,Torres-Socías E D,Peres J A,et al.Mature landfill leachate treatment by coagulation/flocculation combined with Fenton and solar photo-Fenton processes[J].Journal of Hazardous Materials,2015,286:261-268.
[4]孙友,张超,李本高.物化法处理垃圾渗滤液的研究进展[J].工业水处理,2013,33(1):1-5.
[5]Ahmed F N,Lan C Q.Treatment of landfill leachate using membrane bioreactors:a review[J].Desalination,2012,287:41-54.
[6]吴莉娜,涂楠楠,程继坤,等.垃圾渗滤液水质特性和处理技术研究[J].科学技术与工程,2014,14(31):136-143.
[7]程家丽,魏世强,黄启飞.垃圾渗滤液中氨氮脱除技术研究进展[J].环境科学与管理,2006,31(4):125-128.
[8]贾玉鹤,李晶,刘洪波,等.磷酸铵镁沉淀法去除垃圾渗滤液中氨氮的实验研究[J].环境工程学报,2007,1(8):74-77.
[9]冯旭东,王葳,董黎明,等.高浓度氨氮废水处理技术[J].食品科学技术学报,2004,22(2):5-8.
[10]Li X Z,Zhao Q L,Hao X D.Ammonium removal from landfill leachate by chemical precipitation[J].Waste Management,2014,19(6):409-415.
[11]刘小澜,王继徽,黄稳水,等.化学沉淀法去除焦化废水中的氨氮[J].化工环保,2004,24(1):46-49.
[12]叶标,胡青,周礼杰,等.磷酸铵镁法去除垃圾渗滤液中高浓度氨氮的研究[J].环境污染与防治,2013,35(7):31-35.
[13]李莉,张智,张赛,等.基于响应面法优化MAP法处理垃圾渗滤液工艺的研究[J].环境工程学报,2010,4(6):1 289-1 295.
[2]Rowe R K,Yu Y.Clogging of finger drain systems in MSW landfills[J].Waste Management,2012,32(12):2 342-2 352.
[3]Amor C,Torres-Socías E D,Peres J A,et al.Mature landfill leachate treatment by coagulation/flocculation combined with Fenton and solar photo-Fenton processes[J].Journal of Hazardous Materials,2015,286:261-268.
[4]孙友,张超,李本高.物化法处理垃圾渗滤液的研究进展[J].工业水处理,2013,33(1):1-5.
[5]Ahmed F N,Lan C Q.Treatment of landfill leachate using membrane bioreactors:a review[J].Desalination,2012,287:41-54.
[6]吴莉娜,涂楠楠,程继坤,等.垃圾渗滤液水质特性和处理技术研究[J].科学技术与工程,2014,14(31):136-143.
[7]程家丽,魏世强,黄启飞.垃圾渗滤液中氨氮脱除技术研究进展[J].环境科学与管理,2006,31(4):125-128.
[8]贾玉鹤,李晶,刘洪波,等.磷酸铵镁沉淀法去除垃圾渗滤液中氨氮的实验研究[J].环境工程学报,2007,1(8):74-77.
[9]冯旭东,王葳,董黎明,等.高浓度氨氮废水处理技术[J].食品科学技术学报,2004,22(2):5-8.
[10]Li X Z,Zhao Q L,Hao X D.Ammonium removal from landfill leachate by chemical precipitation[J].Waste Management,2014,19(6):409-415.
[11]刘小澜,王继徽,黄稳水,等.化学沉淀法去除焦化废水中的氨氮[J].化工环保,2004,24(1):46-49.
[12]叶标,胡青,周礼杰,等.磷酸铵镁法去除垃圾渗滤液中高浓度氨氮的研究[J].环境污染与防治,2013,35(7):31-35.
[13]李莉,张智,张赛,等.基于响应面法优化MAP法处理垃圾渗滤液工艺的研究[J].环境工程学报,2010,4(6):1 289-1 295.