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SBR工艺用于焦化纳滤浓盐水生物脱氮

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李恩超, 王治立, 金学文, 吕树光, 侯红娟, 尹婷婷. SBR工艺用于焦化纳滤浓盐水生物脱氮[J]. 环境工程学报, 2015, 9(8): 3854-3858. doi: 10.12030/j.cjee.20150843
引用本文: 李恩超, 王治立, 金学文, 吕树光, 侯红娟, 尹婷婷. SBR工艺用于焦化纳滤浓盐水生物脱氮[J]. 环境工程学报, 2015, 9(8): 3854-3858. doi: 10.12030/j.cjee.20150843
shu
Li Enchao, Wang Zhili, Jin Xuewen, Lü Shuguang, Hou Hongjuan, Yin Tingting. Biological denitrification for nanofiltration concentrate from coking wastewater by SBR process[J]. Chinese Journal of Environmental Engineering, 2015, 9(8): 3854-3858. doi: 10.12030/j.cjee.20150843
Citation: Li Enchao, Wang Zhili, Jin Xuewen, Lü Shuguang, Hou Hongjuan, Yin Tingting. Biological denitrification for nanofiltration concentrate from coking wastewater by SBR process[J]. Chinese Journal of Environmental Engineering, 2015, 9(8): 3854-3858. doi: 10.12030/j.cjee.20150843
shu

SBR工艺用于焦化纳滤浓盐水生物脱氮

  • 1.

    华东理工大学, 国家环境保护化工过程环境风险评价与控制重点实验室, 上海 200237

  • 2.

    宝山钢铁股份有限公司, 上海 201900

  • 基金项目:

  • 中图分类号: X703

Biological denitrification for nanofiltration concentrate from coking wastewater by SBR process

  • 1.

    State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai 200237, China

  • 2.

    Research Institute, Baoshan Iron & Steel Co. Ltd., Shanghai 201900, China

  • Fund Project:

  • 摘要: 以焦化废水超滤/纳滤/反渗透的"三膜法"深度处理工艺产生的高电导率纳滤(NF)浓盐水为研究对象,采用SBR脱氮工艺对NF浓盐水中有机污染物和总氮(TN)的去除性能进行了研究。实验结果表明,SBR脱氮工况为进水5 min,缺氧搅拌8 h,好氧曝气12 h,静置2 h,出水5 min,闲置1 h 50 min,污泥浓度(MLSS)为3 000 mg/L左右时,TN平均去除率为45.45%,COD平均去除率为45.36%。通过烧杯实验研究了不同C/N比对反硝化脱氮效率的影响及其中氮形态的变化,在C/N为4:1时,出水TN可降低至14.8 mg/L,其中NO3--N为5.0 mg/L。研究结果证明,SBR可将电导率为12 000~16 000 μS/cm的焦化纳滤浓盐水TN降低至15 mg/L以下。
    Abstract: Organic pollutants and total nitrogen (TN) removal performances in NF concentrate with high conductivity from coking wastewater generated through ultrafiltration/nanofiltration/reverse osmosis processes by SBR denitrification were investigated in this study. The results showed that the average removal efficiencies of TN and COD were 45.45% and 45.36%, respectively, under the operational conditions, namely, 5 min of inflow, 8 h of anoxic treatment, 12 h of aerobic treatment, 2 h of sedimentation, 5 min of outflow, 1 h and 50 min of idle, and MLSS concentration around 3 000 mg/L. The batch tests were employed in investigation of the effects of various C/N ratios on denitrification efficiency and transformation of nitrogen form, and the results showed TN and NO3--N in effluent could be lowered to 14.8 mg/L and 5.0 mg/L, respectively, when C/N was set at 4/1. This study finally confirmed that less than 15 mg/L of TN could be achieved after treatment for NF concentrate whose conductivity was around 12 000~16 000 μS/cm by SBR process.
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  • 收稿日期:  2015-05-22
  • 刊出日期:  2015-08-13
李恩超, 王治立, 金学文, 吕树光, 侯红娟, 尹婷婷. SBR工艺用于焦化纳滤浓盐水生物脱氮[J]. 环境工程学报, 2015, 9(8): 3854-3858. doi: 10.12030/j.cjee.20150843
引用本文: 李恩超, 王治立, 金学文, 吕树光, 侯红娟, 尹婷婷. SBR工艺用于焦化纳滤浓盐水生物脱氮[J]. 环境工程学报, 2015, 9(8): 3854-3858. doi: 10.12030/j.cjee.20150843
shu
Li Enchao, Wang Zhili, Jin Xuewen, Lü Shuguang, Hou Hongjuan, Yin Tingting. Biological denitrification for nanofiltration concentrate from coking wastewater by SBR process[J]. Chinese Journal of Environmental Engineering, 2015, 9(8): 3854-3858. doi: 10.12030/j.cjee.20150843
Citation: Li Enchao, Wang Zhili, Jin Xuewen, Lü Shuguang, Hou Hongjuan, Yin Tingting. Biological denitrification for nanofiltration concentrate from coking wastewater by SBR process[J]. Chinese Journal of Environmental Engineering, 2015, 9(8): 3854-3858. doi: 10.12030/j.cjee.20150843
shu

SBR工艺用于焦化纳滤浓盐水生物脱氮

  • 1.  华东理工大学, 国家环境保护化工过程环境风险评价与控制重点实验室, 上海 200237
  • 2.  宝山钢铁股份有限公司, 上海 201900
  • 收稿日期:  2015-05-22
基金项目:

摘要: 以焦化废水超滤/纳滤/反渗透的"三膜法"深度处理工艺产生的高电导率纳滤(NF)浓盐水为研究对象,采用SBR脱氮工艺对NF浓盐水中有机污染物和总氮(TN)的去除性能进行了研究。实验结果表明,SBR脱氮工况为进水5 min,缺氧搅拌8 h,好氧曝气12 h,静置2 h,出水5 min,闲置1 h 50 min,污泥浓度(MLSS)为3 000 mg/L左右时,TN平均去除率为45.45%,COD平均去除率为45.36%。通过烧杯实验研究了不同C/N比对反硝化脱氮效率的影响及其中氮形态的变化,在C/N为4:1时,出水TN可降低至14.8 mg/L,其中NO3--N为5.0 mg/L。研究结果证明,SBR可将电导率为12 000~16 000 μS/cm的焦化纳滤浓盐水TN降低至15 mg/L以下。

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