铁浆法回收垃圾焚烧飞灰中重金属的实验研究
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摘要
为考察铁浆法回收生活垃圾焚烧飞尘中重金属的可行性,研究了NaCl浓度、铁粉/飞尘、pH及处理时间对重金属回收率的影响,结果表明:铁浆法回收生活垃圾焚烧飞尘中的重金属是可行的。在最佳参数为NaCl浓度0.5mol/L、pH为4、铁粉/飞尘为2、处理时间2 h条件下,飞尘中Pb、Cu、Zn、Cd等重金属回收率可分别达到88.6%、86.7%、90.3%、83.3%。
In order to investigate the feasibility of recovering heavy metals from fly ash of domestic waste incineration with iron slurry method,the effect of NaCl concentration,ratio of Fe powder and fly ash,pH value and treatment time on the recovering efficiency of heavy metals were discussed.The results showed that iron slurry method is feasible for recovering heavy metals from fly ash.In the condition of NaCl concentration=0.5 mol/L,pH=4,ratio of Fe powder and fly ash=2,treatment time= 2 h,the recovery efficiency of heavy metals were 88.6%(Pb),86.7%(Cu),90.3%(Zn),and 83.3%(Cd).
In order to investigate the feasibility of recovering heavy metals from fly ash of domestic waste incineration with iron slurry method,the effect of NaCl concentration,ratio of Fe powder and fly ash,pH value and treatment time on the recovering efficiency of heavy metals were discussed.The results showed that iron slurry method is feasible for recovering heavy metals from fly ash.In the condition of NaCl concentration=0.5 mol/L,pH=4,ratio of Fe powder and fly ash=2,treatment time= 2 h,the recovery efficiency of heavy metals were 88.6%(Pb),86.7%(Cu),90.3%(Zn),and 83.3%(Cd).
引文
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[13]陈玉伟,王建龙.零价铁(ZV)I去除Cu2+的特性及机制研究[J].环境科学,2009,30(11):3353-3357.
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[15]王吟,赵建夫,王学江,等.零价铁修复铬污染水体研究进展[J].安徽农业科学,2010,38(6):3117-3119,3134.
[16]Nagib S,Inoue K.Recovery of Lead and Zinc from Fly Ash Generated fromMunicipal Incineration Plants by Means of Acid and/or Alkaline Leaching[J].Hydrometallurgy,2000,56(3):269-292.
[17]Dermont G,Bergeron M,Mercier G,et al.Soil Washing for Metal Re-moval:A Review of Physical/chemical Technologies and Field Applications[J].J Hazard Mater,2008,152(1):1-31.
[18]Chen S Y,Chen W H,Shih C J.Heavy Metal Removal from Wastewa-ter Using Zero-valent Iron Nanoparticles[J].Water Sci Technol,2008,58(10):1947-1954.
[19]张瑞华,孙红文.零价铁修复铬污染水体的实验室研究[J].农业环境科学学报,2004,23(6):1192-1195.
[20]刘振中,邓慧萍,詹健.零价铁在水处理技术中的研究现状及发展趋势[J].工业水处理,2007,27(10):14-16.
[21]魏国侠,张曙光,王建伟,等.铁浆回收二次飞灰中铅的方法:中国,201210125382.1[P].2012-04-26.
[22]Alorro R D,Mitani S,Hiroyoshi N,et al.Recovery of Heavy Metalsfrom MSW Molten Fly Ash by Carrier-in-pulp Method:Fe Powder as Carrier[J].Miner Eng,2008,21(15):1094-1101.
[2]Johannessen K M.The Regulation of Municipal Waste Incineration Ash:ALegal Review and Update[J].J Hazard Mater,1996,47(1/3):388-393.
[3]毛豫兰,乔秀臣.国外有害固体废弃物固化与稳定技术的研究进展[J].国外建材科技,2007(3):8-10.
[4]Charles H K L,Alvin W M I,Barford J P,et al.Use of Incineration MSWAsh:A Review[J].Sustainability,2010,2(7):1943-1968.
[5]Katsunori N,Yoshikazu N,Hitoshi O,et al.Melting and Stone ProductionUsing MSW Incinerated Ash[J].Waste Manage,2001,21(5):443-449.
[6]贺杏华,侯浩波,张大捷.水泥对垃圾焚烧飞灰的固化处理试验研究[J].环境污染与防治,2006,28(6):425-428.
[7]Chan C C Y,Jia C Q,Graydon J W,et al.The Behaviour of SelectedHeavy Metals in MSW Incineration Electrostatic Precipitator Ash during Roast-ing with Chlorination Agents[J].J Hazard Mater,1996,50(1):1-13.
[8]Chan C C Y,Kirk D W.Behaviour of Metals under the Conditions ofRoasting MSW Incineration Fly Ash with Chlorinating Agents[J].J HazardMater,1999,64(1):75-89.
[9]李润东,聂永丰,王雷,等.成分对垃圾焚烧飞灰熔融过程重金属迁移的影响[J].清华大学学报:自然科学版,2004,44(9):1180-1183.
[10]孙彩兰,田桂芝,夏禹,等.硫脲碳浆法处理浮选金精矿工艺研究[J].贵金属,2007,28(1):1-4.
[11]Alorro R D,Hiroyoshi N,Ito M,et al.Recovery of Heavy Metals fromMSW Molten Fly Ash by CIP Method[J].Hydrometallurgy,2009,97(1/2):8-14.
[12]钟平,黄振泉.氯化提金方法与工艺的研究和应用(上)[J].江西化工,1996(4):16-20.
[13]陈玉伟,王建龙.零价铁(ZV)I去除Cu2+的特性及机制研究[J].环境科学,2009,30(11):3353-3357.
[14]冯婧微,雷晓燕.零价铁去除重金属污染物的研究进展[J].现代化工,2010,30(10):36-39.
[15]王吟,赵建夫,王学江,等.零价铁修复铬污染水体研究进展[J].安徽农业科学,2010,38(6):3117-3119,3134.
[16]Nagib S,Inoue K.Recovery of Lead and Zinc from Fly Ash Generated fromMunicipal Incineration Plants by Means of Acid and/or Alkaline Leaching[J].Hydrometallurgy,2000,56(3):269-292.
[17]Dermont G,Bergeron M,Mercier G,et al.Soil Washing for Metal Re-moval:A Review of Physical/chemical Technologies and Field Applications[J].J Hazard Mater,2008,152(1):1-31.
[18]Chen S Y,Chen W H,Shih C J.Heavy Metal Removal from Wastewa-ter Using Zero-valent Iron Nanoparticles[J].Water Sci Technol,2008,58(10):1947-1954.
[19]张瑞华,孙红文.零价铁修复铬污染水体的实验室研究[J].农业环境科学学报,2004,23(6):1192-1195.
[20]刘振中,邓慧萍,詹健.零价铁在水处理技术中的研究现状及发展趋势[J].工业水处理,2007,27(10):14-16.
[21]魏国侠,张曙光,王建伟,等.铁浆回收二次飞灰中铅的方法:中国,201210125382.1[P].2012-04-26.
[22]Alorro R D,Mitani S,Hiroyoshi N,et al.Recovery of Heavy Metalsfrom MSW Molten Fly Ash by Carrier-in-pulp Method:Fe Powder as Carrier[J].Miner Eng,2008,21(15):1094-1101.