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Study on Influence of Sludge Recycle Ratio on Removal of Nitrogen and Phosphorous in Two-Sludge BCR Denitrifying Phosphorus Removal Process[J]. Journal of South China Normal University (Natural Science Edition), 2017, 49(4): 57-61.
Citation: Study on Influence of Sludge Recycle Ratio on Removal of Nitrogen and Phosphorous in Two-Sludge BCR Denitrifying Phosphorus Removal Process[J]. Journal of South China Normal University (Natural Science Edition), 2017, 49(4): 57-61.

Study on Influence of Sludge Recycle Ratio on Removal of Nitrogen and Phosphorous in Two-Sludge BCR Denitrifying Phosphorus Removal Process

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  • Received Date: December 25, 2015
  • Revised Date: February 24, 2016
  • The influence of different sludge ratios from middle sedimentation tank to anoxic reactor( exceeding sludge ratio) and from final sedimentation tank to anaerobic reactor ( recycled sludge ratio) on denitrifying phosphorus removal in two-sludge BCR denitrifying phosphorus removal process was investigated using simulated domestic wastewater. Results showed that when the ratios of two kinds of sludge are 0.6, 0.4 and 0.2 respectively, the resulting average COD removal rates are 89.98%, 89.48% and 82.38% , total nitrogen removal rates are 79.94%, 80.58% and 65.47%, and phosphorus removal rates are 88.81%, 91.64% and 77.06%, respectively. The effluent COD concentrations are 20.94 mg/L, 21.67 mg/L and 37.66 mg/L, total nitrogen concentrations are 5.72 mg/L, 5.75 mg/L and 10.85mg/L, and phosphorus concentrations are 0.76 mg/L, 0.59 mg/L and 1.62mg/L, respectively. Compared to two-sludge A2N process, the problem of high ammonia nitrogen has been improved. When the ratios of two kinds of sludge are 0.4, two-sludge BCR denitrifying phosphorus removal process has best pollutant removal efficiency. Since the aeration tank and sedimentation tank are integrated, denitrifying dephosphatation with nitrate as electron acceptor was occur under anoxic condition due to contribution of denitrifying phosphorus removal bacteria.
  • [1]华光辉,张波. 城市污水生物除磷脱氮工艺中的矛盾关系及对策[J]. 给水排水, 2002,26(12) : 1-4.

    [2]张洁,胡卫新,张雁秋. 改进型双泥反硝化除磷脱氮工艺——一种可望从根本上解决脱氮除磷矛盾的新工艺[J]. 环境污染与防治, 2005, 27(3):232-235.


    [3] Zuthi M F R, Guo W S, Ngo H H, et al. Enhanced biological phosphorus removal and its modeling for the activated sludge and membrane bioreactor processes[J]. Bioresource Technology, 2013, 139(13):363-374.

    [4] Marcelino M ,, Wallaert D ,, Guisasola A ,, et al. A two-sludge system for simultaneous biological C, N and P removal via the nitrite pathway.[J]. Water Science & Technology A Journal of the International Association on Water Pollution Research, 2011, 64(5):1142-7.

    [5] Kapagiannidis A G, Zafiriadis I, Aivasidis A. Effect of basic operating parameters on biological phosphorus removal in a continuous-flow anaerobic-anoxic activated sludge system.[J]. Bioprocess & Biosystems Engineering, 2012, 35(35):371-82.

    [6]刘莹,彭永臻,王淑莹. A_2N工艺的固有弊端分析及其对策研究[J]. 工业用水与废水,2010,41(6):1-5.

    [7]王亚宜,王淑莹,彭永臻. MLSS、pH及NO_2~--N对反硝化除磷的影响[J]. 中国给水排水, 2005, 21(7):47-51.

    [8]朱文韬,吕锡武,史静. 电子受体和MLSS对反硝化除磷的影响[J]. 净水技术, 2014,33(5):31-37.

    [9]吕娟. NO_2~--N、MLSS对反硝化脱氮除磷的影响[J]. 水资源与水工程学报, 2014,25(5):207-210.

    [10]李相昆,姜安玺,于健,等.连续流双污泥反硝化同时除磷系统影响因素[J].沈阳建筑大学学报,2005,21(5):560-563.


    [11]杨庆娟,王淑莹,刘莹,袁志国. 污泥回流比对A_2N反硝化除磷工艺脱氮除磷的影响[J]. 中国给水排水, 2008, 24(13):37-41.

    [12] Kapagiannidis A G, Zafiriadis I, Aivasidis A. Upgrading the efficiency of an external nitrification BNR system – The modified Dephanox process[J]. Chemical Engineering Journal, 2011, 175(22):124-135.

    [13]刘婧. 改良型双污泥系统反硝化除磷工艺的试验研究[D].哈尔滨工业大学,2008.

    [14] 徐玉洁, 张雁秋, 杨德军,等. 改良型双污泥工艺处理低C/N城市污水[J]. 安徽农业科学, 2011,39(10):5992-5993.

    [15] 杨鹏, 张朝升, 荣宏伟,等. 双污泥BCR反硝化同步脱氮除磷的试验研究[J]. 环境科学与技术, 2014,37(03) :74-77.

    [1]华光辉,张波. 城市污水生物除磷脱氮工艺中的矛盾关系及对策[J]. 给水排水, 2002,26(12) : 1-4.

    [2]张洁,胡卫新,张雁秋. 改进型双泥反硝化除磷脱氮工艺——一种可望从根本上解决脱氮除磷矛盾的新工艺[J]. 环境污染与防治, 2005, 27(3):232-235.


    [3] Zuthi M F R, Guo W S, Ngo H H, et al. Enhanced biological phosphorus removal and its modeling for the activated sludge and membrane bioreactor processes[J]. Bioresource Technology, 2013, 139(13):363-374.

    [4] Marcelino M ,, Wallaert D ,, Guisasola A ,, et al. A two-sludge system for simultaneous biological C, N and P removal via the nitrite pathway.[J]. Water Science & Technology A Journal of the International Association on Water Pollution Research, 2011, 64(5):1142-7.

    [5] Kapagiannidis A G, Zafiriadis I, Aivasidis A. Effect of basic operating parameters on biological phosphorus removal in a continuous-flow anaerobic-anoxic activated sludge system.[J]. Bioprocess & Biosystems Engineering, 2012, 35(35):371-82.

    [6]刘莹,彭永臻,王淑莹. A_2N工艺的固有弊端分析及其对策研究[J]. 工业用水与废水,2010,41(6):1-5.

    [7]王亚宜,王淑莹,彭永臻. MLSS、pH及NO_2~--N对反硝化除磷的影响[J]. 中国给水排水, 2005, 21(7):47-51.

    [8]朱文韬,吕锡武,史静. 电子受体和MLSS对反硝化除磷的影响[J]. 净水技术, 2014,33(5):31-37.

    [9]吕娟. NO_2~--N、MLSS对反硝化脱氮除磷的影响[J]. 水资源与水工程学报, 2014,25(5):207-210.

    [10]李相昆,姜安玺,于健,等.连续流双污泥反硝化同时除磷系统影响因素[J].沈阳建筑大学学报,2005,21(5):560-563.


    [11]杨庆娟,王淑莹,刘莹,袁志国. 污泥回流比对A_2N反硝化除磷工艺脱氮除磷的影响[J]. 中国给水排水, 2008, 24(13):37-41.

    [12] Kapagiannidis A G, Zafiriadis I, Aivasidis A. Upgrading the efficiency of an external nitrification BNR system – The modified Dephanox process[J]. Chemical Engineering Journal, 2011, 175(22):124-135.

    [13]刘婧. 改良型双污泥系统反硝化除磷工艺的试验研究[D].哈尔滨工业大学,2008.

    [14] 徐玉洁, 张雁秋, 杨德军,等. 改良型双污泥工艺处理低C/N城市污水[J]. 安徽农业科学, 2011,39(10):5992-5993.

    [15] 杨鹏, 张朝升, 荣宏伟,等. 双污泥BCR反硝化同步脱氮除磷的试验研究[J]. 环境科学与技术, 2014,37(03) :74-77.

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