A Full-Scale Study On Phosphorus Removal From Biological A/O Process Enhanced by Zeolite

2009 3rd International Conference on Bioinformatics and Biomedical Engineering Pub Date : 2009-06-11 DOI:10.1109/ICBBE.2009.5162171

G. Cheng, Shan Xu, Ruifang Wang, Z. Wu, Fei-juan Zhang, Xiang-feng Huang

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引用次数: 2

Abstract

In a full-scale test, zeolite enhanced the biological nitrification, but the nitrate of returning mixed-flow in the anaerobic process inhibited the release of the polyphosphate accumulation microorganisms and had little effect on the phosphorus removal in the biological A/O process. It was suggested that we use the method of chemical phosphorus removal in the process. Aluminium and ferric salts had a good effect on chemical phosphorus removal, and had no correlation with locations. When adding Al 2 (SO 4 ) 3 ldr18H 2 O, the molar ratio of the TP and Al at 1:1.5, the rate of phosphorus removal was more than 85%. When adding FeSO 4 ldr12H 2 O, the molar ratio of the TP and Fe at 1:1, the rate of phosphorus removal was more than 80%. When adding 20 mg/L FeSO 4 ldr12H 2 O and 30 mg/L Al 2 (SO 4 ) 3 ldr18H 2 O in the anaerobic process, the mixed phosphorus removal agent could remove nearly 90% of phosphorus in a biological A/O process enhanced by zeolite. At the same time, the content of phosphorus could reach the effluent discharge standard.

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沸石强化生物A/O工艺除磷的全面研究

在全尺寸试验中，沸石增强了生物硝化作用，但厌氧过程中回流混流的硝酸盐抑制了聚磷积累微生物的释放，对生物a /O过程中的除磷影响不大。建议在处理过程中采用化学除磷法。铝、铁盐对化学除磷效果较好，且与地点无关。当TP与Al的摩尔比为1:1.5时，al2 (so4) 3ldr18h2o的去除率可达85%以上。当加入feso4 ldr12h2o, TP与Fe的摩尔比为1:1时，除磷率可达80%以上。在厌氧过程中，添加20 mg/L feso4 ldr12h2o和30 mg/L Al 2 (so4) 3 ldr18h2o，混合除磷剂对沸石强化生物a /O工艺的除磷率接近90%。同时，磷的含量可以达到出水排放标准。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2009 3rd International Conference on Bioinformatics and Biomedical Engineering

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