基于ABR-MBR组合工艺的反硝化除磷性能优化

[Optimization of Denitrifying Phosphorus Removal Performance Based on ABR-MBR Combined Process].

作者信息

Cheng Chao-Yang, Zhao Shi-Hui, Lü Liang, Wu Peng, Shen Yao-Liang

机构信息

School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China.

Jiangsu Collaborative Innovation Center of Water Treatment Technology and Material, Suzhou 215009, China.

出版信息

Huan Jing Ke Xue. 2016 Nov 8;37(11):4282-4288. doi: 10.13227/j.hjkx.201605222.

DOI:10.13227/j.hjkx.201605222

PMID:29964682

Abstract

An integrated process based on combination of the anaerobic baffled reactor(ABR)-membrane bioreactor(MBR) was adopted to treat domestic sewage with low C/N ratio. In order to realize the function of highly efficient denitrifying phosphorus removal, nitrate recycling ratio and sludge recycle ratio were optimized in this study. The results indicated that the optimized denitrifying phosphorus removal efficiency was achieved under the conditions of organic loading rate of 2.0 kg·(m·d) in ABR, total hydraulic retention time (HRT) of ABR-MBR at 9 h, the SRT at 15 d, sludge reflux ratio of 100%, and nitrate recycling ratios set to 300%. The average removal rates of TN and soluble PO-P were 84% and 94%, the amount of phosphorus removed by denitrifying accounted for 87% of the total phosphorus removed, and the average effluent concentration for TN and soluble phosphorus were 12.98 mg·L and 0.43 mg·L respectively.

摘要

采用厌氧折流板反应器（ABR）-膜生物反应器（MBR）相结合的一体化工艺处理低C/N比的生活污水。为实现高效反硝化除磷功能，本研究对硝酸盐回流比和污泥回流比进行了优化。结果表明，在ABR有机负荷率为2.0 kg·(m·d)、ABR-MBR总水力停留时间（HRT）为9 h、污泥停留时间（SRT）为15 d、污泥回流比为100%、硝酸盐回流比设定为300%的条件下，反硝化除磷效率达到最优。TN和可溶性PO-P的平均去除率分别为84%和94%，反硝化除磷量占总除磷量的87%，TN和可溶性磷的平均出水浓度分别为12.98 mg·L和0.43 mg·L。