Page 218 - 《环境工程技术学报》2023年第1期
P. 218
Vol.13，No.1 环 境 工 程 技 术 学 报 第 13 卷，第 1 期
Jan.，2023 Journal of Environmental Engineering Technology 2023 年 1 月
郑力，李志勇，黄剑，等.竹刨花-铁耦合体系对低碳氮比污水的脱氮性 能 [J].环境工程技术学报，2023，13（1）：214-221.
ZHENG L,LI Z Y,HUANG J,et al.Denitrification performance of bamboo shavings-iron coupled system for low C/N ration wastewater[J].Journal of
Environmental Engineering Technology，2023，13（1）：214-221.
竹刨花-铁耦合体系对低碳氮比污水的脱氮性能
郑力，李志勇，黄剑，程晓夏
1.湖北省自动化研究所股份有限公司
2.武汉江城泽源生态工程技术有限公司
摘要 针对低碳氮比污水中总氮（TN）去除率低的问题，以纤维状竹刨花为固体碳源，单质铁粉为铁源，利用二者的耦合作用进
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行脱氮。通过静态反硝化试验考察不同铁碳质量比（Fe/C） 对 NO 去除效果的影响，确定耦合体系适宜 的 Fe/C；在此基础上，
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设置单纯竹刨花对照组（1 试验组）与耦合填料试验组（2 试验组）动态反硝化试验，研究其脱氮性能。结果表明：静态试验中，加
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入铁粉的耦合体 系 NO 去除率均高于单纯竹刨花体系，但 当 Fe/ 大于 0.125∶ 时，NO 去除率提升不显著，综合考虑反硝
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1
C
N
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化效果与成本，确定动态试验耦合填 料 Fe/ 为 0.125∶1。动态试验中，进水总有机碳浓度低 于 2 mg/L，T 浓度为（40.93±2.04）
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C
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mg/L，水力停留时间 为 18 时，1 和 # 2 试验组运行 约 10 后脱氮效能趋于稳定。12～81 d， 组出水总有机碳浓度均较低，1 、
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h
d
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2 试验 组 T 平均去除率分别 为 33 % 和 76%，2 试验组 的 T 去除率相 比 1 试验组提高 了 129%；两组均有一定 的 NO 积累，
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2
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但 2 试验组 的 NO 浓度相 比 1 试验组低 约 47%；2 试验组出水总铁平均浓度低 于 GB 3838—2002《地表水环境质量标准》限
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值，未出现铁过量释放 与 NH - 明显积累。总之，竹刨花-铁耦合体系脱氮效能优异，脱氮过程二次影响低。我国竹资源丰富，
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铁来源广泛，竹刨花-铁耦合体系可用于低碳氮比生活污水 中 T 的去除。
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关键词 竹刨花；铁粉；反硝化；固体碳源；耦合体系
中图分类号：X703 文章编号：1674-991X（2023）01-0214-08 doi：10.12153/j.issn.1674-991X.20210689
Denitrification performance of bamboo shavings-iron coupled system for
low C/N ration wastewater
ZHENG Li, LI Zhiyong, HUANG Jian, CHENG Xiaoxia
1.Hubei Automation Research Institute Co., Ltd.
2.Wuhan Jiangcheng Zeyuan Ecological Engineering Technology Co., Ltd.
Abstract To address the problem of insufficient removal of total nitrogen (TN) from low C/N ratio effluent,
fibrous bamboo shavings were used as a solid carbon source and elemental iron powder as an iron source, and the
coupling of the two materials was used for nitrogen removal. Static denitrification experiments were conducted to
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investigate the effect of different Fe/C mass ratios on nitrate-nitrogen (NO -N) removal and to determine the
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appropriate Fe/C ratio for the coupled system. On this basis, the dynamic denitrification test was divided into a
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control group of simple bamboo shavings (1 ) and a test group of coupled fillers (2 ) to study their denitrification
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performance. The results of static tests showed that the NO -N removal rate of the coupled system with the addition
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of iron powder was higher than that of the simple bamboo shavings system, but when Fe/C was greater than 0.125：
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1, the improvement of NO -N removal was not significant. Taking into account the denitrification effect and cost,
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Fe/C ratio of the coupled fillers in the dynamic test was determined to be 0.125∶1. The dynamic test results showed
that, when the influent TOC was <2 mg/L , TN was (40.93±2.04) mg/L, and hydraulic retention time of 18 h, the
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denitrification efficiency of 1 and 2 stabilized after running about 10 d. 12-81 d, the effluent TOC of both groups
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were low, and the average TN removal rates of 1 and 2 were 32.99% and 75.58%, respectively, and TN removal
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rate of 2 increased by 129% higher than that of 1 ; both groups had some nitrite nitrogen (NO -N) accumulation,
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but the NO -N concentration of 2 was about 47% lower than that of 1 ; the average concentration of total iron in the
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effluent of 2 was lower than the limit value of Surface Water Environmental Quality Standard (GB 3838-2002), and
收稿日期：2021-11-15
基金项目：湖北省科技发展专项（KJFZ2019015，42000022205T000000139）
作者简介：郑力（1991—），女，工程师，硕士，主要从事水污染治理研究，13986044659@163.com
