孙力平1,2,
邱春生1,2,
石璞玉3,
王少坡1,2,
刘范嘉4,
陈剑4
1.天津城建大学环境与市政工程学院，天津 300384
2.天津市水质科学与技术重点实验室，天津 300384
3.北京科净源科技股份有限公司，北京 100042
4.天津凯英科技发展股份有限公司，天津 300381
基金项目: 国家自然科学基金资助项目（51478292，51478291）
天津市科技计划项目（14ZCDGSF00032）
Dissolution and transformation of heavy metals in sewage sludge based on bioleaching
JIE Jianyong1,,SUN Liping1,2,
QIU Chunsheng1,2,
SHI Puyu3,
WANG Shaopo1,2,
LIU Fanjia4,
CHEN Jian4
1.School of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin 300384, China
2.Tianjin Key Laboratory of Aquatic Science and Technology, Tianjin 300384, China
3.Beijing SYS Science & Technology Co.Ltd., Beijing 100042, China
4.Tianjin Caring Technology Development Co.Ltd., Tianjin 300381, China
-->
摘要
HTML全文
图
参考文献
相关文章
施引文献
资源附件
访问统计
摘要:利用生物淋滤法处理城市污泥，以生物淋滤过程中pH、ORP（氧化还原电位）变化以及重金属（Zn、Cu、Cd）溶出率为指标，考察淋滤菌接种比例、初始pH、淋滤时间对生物淋滤的影响，并分析了生物淋滤前后，重金属形态变化以及重金属的生物有效性和迁移性。结果表明富集筛选的嗜酸性氧化亚铁硫杆菌（A. f）可有效溶出污泥中的重金属。生物淋滤最佳条件为：初始pH=4.00，淋滤菌接种比例30%，重金属Zn，Cu，Cd在第10天的整体处理效果最优，溶出率分别达到75.30%、50.40%和74.44%。BCR形态分析表明：原污泥中Zn，Cu，Cd主要以弱酸提取态、可还原态和氧化态存在，残渣态较少；生物淋滤之后，3种重金属弱酸提取态、可还原态和氧化态含量有不同程度降低，其中，可还原态含量降低最为显著，残渣态基本无变化，并且淋滤后污泥中重金属氧化态及残渣态所占比例较淋滤前高，污泥稳定性得到提升。生物淋滤可以通过减少污泥中重金属含量和改变重金属形态降低其生物有效性和迁移性。
关键词: 生物淋滤/
氧化亚铁硫杆菌/
重金属/
城市污泥
Abstract:Bioleaching was applied to treat municipal sludge, the pH, ORP (oxidation-reduction potential) and heavy metals (Zn, Cu, Cd) dissolution rate were analyzed to investigate the effects of leaching bacteria inoculation ratio, initial pH and leaching time on the bioleaching. Meanwhile, the transformation, bioavailability and migration of heavy metals were also analyzed before and after bioleaching. The results showed that the enriched Acidithiobacillus ferrooxidans (A. f) can effectively dissolve out heavy metals from sludge, the optimum conditions of bioleaching were as follows：the initial pH of 4.00, leaching bacteria inoculation ratio of 30% and leaching time of 10 days. The dissolution rate of Zn, Cu, Cd could reach 75.30%, 50.40% and 74.44%, respectively. Fractions of heavy metals analysis showed that Zn, Cu, and Cd existed mainly in acid extractable state, reducible state and oxidized state with less in residual state. After bioleaching, heavy metals of the acid extractable state, reducible state and oxidized state were decreased in different degrees, among them, heavy metals of the reducible state decreased significantly with constant content of the residual state. Besides, the proportion of the oxidation and residual state of heavy metals after leaching was higher than that before leaching, the stability of sludge was improved. Bioleaching could reduce the bioavailability and migration of heavy metals by decreasing the content and altering the form of heavy metals.
Key words:bioleaching/
Acidithiobacillus ferrooxidans/
heavy metal/
municipal sludge.
| [1] | 中华人民共和国住房和城乡建设部. 中国城乡建设统计年鉴[M]. 北京: 中国统计出版社,2016 |
| [2] | 王聪，李强，李保宾，等. 生物淋滤法去除污泥中的重金属[J]．微生物学通报，2010，37(4):615-621 |
| [3] | 接伟光，彭轶，彭永臻，等.pH对剩余污泥中氮、磷溶出及菌群组成的影响[J]．中国给水排水，2014，30(17):22-25 |
| [4] | 涂剑成，赵庆良，杨倩倩. 东北地区城市污水处理厂污泥中重金属的形态分布及其潜在生态风险评价[J]．环境科学学报， 2012，32(3):689-695 |
| [5] | BARAKAT M A.New trends in removing heavy metals from industrial wastewater[J]．Arabian Journal of Chemistry，2011，4(4):361-377 10.1016/j.arabjc.2010.07.019 |
| [6] | 周邦智，吕昕，赵小辉. 剩余污泥中重金属的电动力学修复研究[J]. 环境工程学报，2011，5(6):1401-1404 |
| [7] | YIP T C M，YAN D Y S，YUI M M T，et al．Heavy metal extraction from an artificially contaminated sandy soil under EDDS deficiency：Significance of humic acid and chelant mixture[J]．Chemosphere，2010，80(4):416-421 10.1016/j.chemosphere.2010.03.033 |
| [8] | DONI S，MACCI C，PERUZZI E，et al．Heavy metal distribution in a sediment phytoremediation system at pilot scale[J]．Ecological Engineering，2015，81:146-157 10.1016/j.ecoleng.2015.04.049 |
| [9] | ZENG X，TWARDOWSKA I，WEI S，et al．Removal of trace metals and improvement of dredged sediment dewaterability by bioleaching combined with Fenton-like reaction[J]．Journal of Hazardous Materials，2015，288:51-59 10.1016/j.jhazmat.2015.02.017 |
| [10] | 张娟，丁雷，徐鑫，等. 生物淋滤技术对城市污泥中高浓度重金属的去除[J]. 环境工程学报，2016，10(12):7283-7288 10.12030/j.cjee.201507113 |
| [11] | KUMAR R N，NAGENDRAN R.Influence of initial pH on bioleaching of heavy metals from contaminated soil employing indigenous Acidithiobacillus thiooxidans[J].Chemosphere，2007，66(9):1775-1781 10.1016/j.chemosphere.2006.07.091 |
| [12] | SOLISIO C，LODI A，VEGLIO F.Bioleaching of zinc and aluminium from industrial waste sludges by means of Thiobacillus ferrooxidans[J].Waste Management，2002，22(6):667-675 10.1016/S0956-053X(01)00052-6 |
| [13] | 刘杰，詹琴，张欣宇. 生物淋滤对污泥表面特征及重金属形态的影响[J]. 中国给水排水，2015，31(11):31-34 |
| [14] | ZHENG G，GAO D，CHEN T，et al．Stabilization of nickel and chromium in sewage sludge during aerobic composting[J]．Journal of Hazardous Materials，2007，142(1/2):216-221 10.1016/j.jhazmat.2006.08.003 |
| [15] | 吴小卉，张军，王敦球. 生物沥滤过程中城市污泥Zn、Cu的形态转化[J]. 环境工程学报，2015，9(5):2393-2398 |
| [16] | 李超，周立祥，王世梅. 复合硫杆菌生物浸出污泥中重金属的效果及与pH和ORP的关系[J]. 环境科学学报，2008，28(6):1155-1160 |
| [17] | BAIG J A，KAZI T G，ARAIN M B，et al．Arsenic fractionation in sediments of different origins using BCR sequential and single extraction methods[J]．Journal of Hazardous Materials，2009，167(1/2/3):745-751 10.1016/j.jhazmat.2009.01.040 |
| [18] | WANG J，BAI J，XU J，et al.Bioleaching of metals from printed wire boards by Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans and their mixture[J].Journal of Hazardous Materials， 2009，172(2/3):1100-1105 10.1016/j.jhazmat.2009.07.102 |
| [19] | 刘甜田，何滨，王亚韩，等. 改进BCR法在活性污泥样品重金属形态分析中的应用[J]. 分析试验室，2007，26(z1):17-20 |
| [20] | 闫瑾. 生物淋滤法去除污泥中重金属的工艺参数优选研究[D]. 太原：太原理工大学，2010 |
| [21] | TYAGI R D.Simultaneous sewage sludge digestion and metal leaching: Effects of sludge solids concentration[J].Water Research，1997，31(1):105-118 10.1016/S0043-1354(96)00247-3 |
| [22] | 孙津鸿，张书廷，姚艳. 活性污泥缓冲性能研究[J]. 安全与环境学报，2015，15(1):199-202 10.13637/j.issn.1009-6094.2015.01.041 |
| [23] | 宋相国. 生物酸化联合类Fenton氧化去除城市污泥中重金属[D]. 长沙：湖南大学，2008 |
| [24] | 李淑更，张可方，周少奇，等．微生物淋滤法去除城市污泥中重金属的效果[J]．生态环境学报，2009，18(1):111-115 |
| [25] | 张军，徐浚洋，王敦球，等. 含硫底物种类与浓度对污泥重金属生物沥滤的影响[J]. 环境工程，2015，33(4):39-43 |
| [26] | 豆艳霞，王怡，陈斌，等. 硫杆菌淋滤对剩余污泥中重金属及养分的影响[J]. 中国给水排水，2014，30(21):27-31 |
Turn off MathJax -->
点击查看大图计量
文章访问数:946
HTML全文浏览数:502
PDF下载数:492
施引文献:0
出版历程
刊出日期:2018-03-22
-->
基于生物淋滤的城市污泥重金属溶出及形态迁移
节剑勇1,,孙力平1,2,
邱春生1,2,
石璞玉3,
王少坡1,2,
刘范嘉4,
陈剑4
1.天津城建大学环境与市政工程学院，天津 300384
2.天津市水质科学与技术重点实验室，天津 300384
3.北京科净源科技股份有限公司，北京 100042
4.天津凯英科技发展股份有限公司，天津 300381
基金项目: 国家自然科学基金资助项目（51478292，51478291） 天津市科技计划项目（14ZCDGSF00032）
关键词: 生物淋滤/
氧化亚铁硫杆菌/
重金属/
城市污泥
摘要:利用生物淋滤法处理城市污泥，以生物淋滤过程中pH、ORP（氧化还原电位）变化以及重金属（Zn、Cu、Cd）溶出率为指标，考察淋滤菌接种比例、初始pH、淋滤时间对生物淋滤的影响，并分析了生物淋滤前后，重金属形态变化以及重金属的生物有效性和迁移性。结果表明富集筛选的嗜酸性氧化亚铁硫杆菌（A. f）可有效溶出污泥中的重金属。生物淋滤最佳条件为：初始pH=4.00，淋滤菌接种比例30%，重金属Zn，Cu，Cd在第10天的整体处理效果最优，溶出率分别达到75.30%、50.40%和74.44%。BCR形态分析表明：原污泥中Zn，Cu，Cd主要以弱酸提取态、可还原态和氧化态存在，残渣态较少；生物淋滤之后，3种重金属弱酸提取态、可还原态和氧化态含量有不同程度降低，其中，可还原态含量降低最为显著，残渣态基本无变化，并且淋滤后污泥中重金属氧化态及残渣态所占比例较淋滤前高，污泥稳定性得到提升。生物淋滤可以通过减少污泥中重金属含量和改变重金属形态降低其生物有效性和迁移性。
English Abstract
Dissolution and transformation of heavy metals in sewage sludge based on bioleaching
JIE Jianyong1,,SUN Liping1,2,
QIU Chunsheng1,2,
SHI Puyu3,
WANG Shaopo1,2,
LIU Fanjia4,
CHEN Jian4
1.School of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin 300384, China
2.Tianjin Key Laboratory of Aquatic Science and Technology, Tianjin 300384, China
3.Beijing SYS Science & Technology Co.Ltd., Beijing 100042, China
4.Tianjin Caring Technology Development Co.Ltd., Tianjin 300381, China
Keywords: bioleaching/
Acidithiobacillus ferrooxidans/
heavy metal/
municipal sludge
Abstract:Bioleaching was applied to treat municipal sludge, the pH, ORP (oxidation-reduction potential) and heavy metals (Zn, Cu, Cd) dissolution rate were analyzed to investigate the effects of leaching bacteria inoculation ratio, initial pH and leaching time on the bioleaching. Meanwhile, the transformation, bioavailability and migration of heavy metals were also analyzed before and after bioleaching. The results showed that the enriched Acidithiobacillus ferrooxidans (A. f) can effectively dissolve out heavy metals from sludge, the optimum conditions of bioleaching were as follows：the initial pH of 4.00, leaching bacteria inoculation ratio of 30% and leaching time of 10 days. The dissolution rate of Zn, Cu, Cd could reach 75.30%, 50.40% and 74.44%, respectively. Fractions of heavy metals analysis showed that Zn, Cu, and Cd existed mainly in acid extractable state, reducible state and oxidized state with less in residual state. After bioleaching, heavy metals of the acid extractable state, reducible state and oxidized state were decreased in different degrees, among them, heavy metals of the reducible state decreased significantly with constant content of the residual state. Besides, the proportion of the oxidation and residual state of heavy metals after leaching was higher than that before leaching, the stability of sludge was improved. Bioleaching could reduce the bioavailability and migration of heavy metals by decreasing the content and altering the form of heavy metals.
