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甘蔗渣为缓释碳源负载SRB处理模拟矿山淋滤水

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张雅琳, 胡学伟, 夏丽娟, 靳松望, 王亚冰, 宁平. 甘蔗渣为缓释碳源负载SRB处理模拟矿山淋滤水[J]. 环境工程学报, 2016, 10(5): 2355-2360. doi: 10.12030/j.cjee.201412120
引用本文: 张雅琳, 胡学伟, 夏丽娟, 靳松望, 王亚冰, 宁平. 甘蔗渣为缓释碳源负载SRB处理模拟矿山淋滤水[J]. 环境工程学报, 2016, 10(5): 2355-2360. doi: 10.12030/j.cjee.201412120
shu
Zhang Yalin, Hu Xuewei, Xia Lijuan, Jin Songwang, Wang Yabing, Ning Ping. Treating synthetic mine leaching wastewater by sulfate-reducing bacteria with sugarcane bagasse as carbon source[J]. Chinese Journal of Environmental Engineering, 2016, 10(5): 2355-2360. doi: 10.12030/j.cjee.201412120
Citation: Zhang Yalin, Hu Xuewei, Xia Lijuan, Jin Songwang, Wang Yabing, Ning Ping. Treating synthetic mine leaching wastewater by sulfate-reducing bacteria with sugarcane bagasse as carbon source[J]. Chinese Journal of Environmental Engineering, 2016, 10(5): 2355-2360. doi: 10.12030/j.cjee.201412120
shu

甘蔗渣为缓释碳源负载SRB处理模拟矿山淋滤水

  • 1.

    昆明理工大学环境科学与工程学院, 昆明 650500

  • 基金项目:

    国家自然科学基金资助项目(51178208,51368024)

    云南省教育厅重点项目(2013Z123)

    云南铜业校企预研基金(2013YT02)

  • 中图分类号: X703

Treating synthetic mine leaching wastewater by sulfate-reducing bacteria with sugarcane bagasse as carbon source

  • 1.

    Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China

  • Fund Project:

  • 摘要: 以甘蔗渣为缓释碳源及载体,负载硫酸盐还原菌(SRB)处理含低浓度Cu2+离子的模拟矿山淋滤水,研究了缓释碳源、pH、ORP、SO42-、COD等对矿山淋滤水中Cu2+去除效果的影响,并探讨了处理过程中铜元素的形态及归趋模式。结果表明:在处理过程中pH呈现缓慢升高趋势,ORP全部降至-100 mV以下;硫酸根还原率可达92.4%;甘蔗渣作为缓释碳源释放稳定,COD可稳定保持200~300 mg/L之间;负载在甘蔗渣载体上的菌群可耐受高浓度Cu2+的毒性抑制,并利用缓释碳源甘蔗渣释放出的小分子物质将硫酸根持续还原;至实验期结束,20 mg/L的Cu2+浓度降至0.5 mg/L以下,较高浓度的Cu2+拟通过多级反应器串联进行逐级去除;SO42-和Cu2+的反应速率比表明,SRB每还原约15 mg SO42-,就有1 mg Cu2+得到去除;Cu2+主要是以硫化物的形式得以去除。
    Abstract: A low concentration of copper (Cu2+) in synthetic leaching wastewater was treated with sulfate-reducing bacteria (SRB) using sugarcane bagasse as the carbon source and carrier. The impacts of pH, oxidation reduction potential (ORP), the concentration of sulfate (SO42-), and the chemical oxygen demand (COD) were analyzed and the form of the precipitate was also investigated. The results showed that the pH values slowly increased, the values of ORP all decreased to below -100 mV, and the percentage of SO42- reduction could reach 92.4% during the period. In addition, the COD was maintained in the range of 200 to 300 mg/L. The microflora in the system had a tolerance to the inhibition of the high concentration of Cu2+, and the SRB could reduce sulfate by small molecules that were produced by the biological degradation of the bagasse. At the end of experiment, the concentration of Cu2+ was reduced from 20 mg/L to below 0.5 mg/L, while the high concentration of Cu2+ could be removed by several multi-stage reactors in series. Moreover, the reaction rates of SO42- and Cu2+ indicated that 1 mg Cu2+ could be removed when SRB reduced 15 mg of SO42-. Cu2+ was eventually removed mainly as sulfide.
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  • 收稿日期:  2015-01-31
  • 刊出日期:  2016-06-03
张雅琳, 胡学伟, 夏丽娟, 靳松望, 王亚冰, 宁平. 甘蔗渣为缓释碳源负载SRB处理模拟矿山淋滤水[J]. 环境工程学报, 2016, 10(5): 2355-2360. doi: 10.12030/j.cjee.201412120
引用本文: 张雅琳, 胡学伟, 夏丽娟, 靳松望, 王亚冰, 宁平. 甘蔗渣为缓释碳源负载SRB处理模拟矿山淋滤水[J]. 环境工程学报, 2016, 10(5): 2355-2360. doi: 10.12030/j.cjee.201412120
shu
Zhang Yalin, Hu Xuewei, Xia Lijuan, Jin Songwang, Wang Yabing, Ning Ping. Treating synthetic mine leaching wastewater by sulfate-reducing bacteria with sugarcane bagasse as carbon source[J]. Chinese Journal of Environmental Engineering, 2016, 10(5): 2355-2360. doi: 10.12030/j.cjee.201412120
Citation: Zhang Yalin, Hu Xuewei, Xia Lijuan, Jin Songwang, Wang Yabing, Ning Ping. Treating synthetic mine leaching wastewater by sulfate-reducing bacteria with sugarcane bagasse as carbon source[J]. Chinese Journal of Environmental Engineering, 2016, 10(5): 2355-2360. doi: 10.12030/j.cjee.201412120
shu

甘蔗渣为缓释碳源负载SRB处理模拟矿山淋滤水

  • 1. 昆明理工大学环境科学与工程学院, 昆明 650500
  • 收稿日期:  2015-01-31
基金项目:

国家自然科学基金资助项目(51178208,51368024)

云南省教育厅重点项目(2013Z123)

云南铜业校企预研基金(2013YT02)

摘要: 以甘蔗渣为缓释碳源及载体,负载硫酸盐还原菌(SRB)处理含低浓度Cu2+离子的模拟矿山淋滤水,研究了缓释碳源、pH、ORP、SO42-、COD等对矿山淋滤水中Cu2+去除效果的影响,并探讨了处理过程中铜元素的形态及归趋模式。结果表明:在处理过程中pH呈现缓慢升高趋势,ORP全部降至-100 mV以下;硫酸根还原率可达92.4%;甘蔗渣作为缓释碳源释放稳定,COD可稳定保持200~300 mg/L之间;负载在甘蔗渣载体上的菌群可耐受高浓度Cu2+的毒性抑制,并利用缓释碳源甘蔗渣释放出的小分子物质将硫酸根持续还原;至实验期结束,20 mg/L的Cu2+浓度降至0.5 mg/L以下,较高浓度的Cu2+拟通过多级反应器串联进行逐级去除;SO42-和Cu2+的反应速率比表明,SRB每还原约15 mg SO42-,就有1 mg Cu2+得到去除;Cu2+主要是以硫化物的形式得以去除。

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