[1]徐洪斌,高照,姚松源,等.基于活性焦滤料的自清洗式生物滤池深度脱氮[J].中国给水排水,2026,42(9):87-93.
　XUHongbin,GAOZhao,YAOSongyuan,et al.Advanced Nitrogen Removal in Self-cleaning Biological Filter Based on Activated Coke Media[J].China Water & Wastewater,2026,42(9):87-93.
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基于活性焦滤料的自清洗式生物滤池深度脱氮

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第42卷 期数: 2026年第9期 页码: 87-93 栏目: 出版日期: 2026-05-01
Title:
Advanced Nitrogen Removal in Self-cleaning Biological Filter Based on Activated Coke Media
作者:
徐洪斌， 高照， 姚松源， 李国强
（郑州大学 生态与环境学院，河南 郑州 450001）
Author(s):
XU　Hongbin， GAO　Zhao， YAO　Songyuan， LI　Guoqiang
（School of Ecology and Environment， Zhengzhou University， Zhengzhou 450001， China）
关键词:
活性焦;  自清洗式生物滤池;  深度脱氮;  氮元素沿程转化规律
Keywords:
activated coke;  self-cleaning biological filter;  advanced nitrogen removal;  nitrogen transformation patterns along the filter depth
摘要:
为了探究不同运行参数对自清洗式生物滤池深度脱氮性能的影响，构建了基于活性焦滤料的自清洗式生物滤池（AC-DNBF），通过调整滤速和碳氮比（C/N），分析微生物群落组成，探究AC-DNBF对城镇污水处理厂出水深度脱氮的效能，并且研究了AC-DNBF内氮元素沿程转化规律。结果表明，当滤速为4.5 cm/h、C/N=3时，AC-DNBF对NH4+-N、NO3--N和TN的平均去除率最高分别达到46.36%、96.30%和79.69%，此时NO3--N、TN、NH4+-N平均出水浓度分别为0.35、2.96和2.44 mg/L。分析氮元素沿程转化规律发现，NH4+?N浓度的下降速率与滤层高度没有明显关系。AC-DNBF对NO3--N的去除效果较好，在2#、3#、4#和5#处，不同高度滤层内NO3--N浓度的下降率分别为55.89%、20.72%、10.82%和5.50%，相比之下AC-DNBF底部活性焦滤层对NO3--N的去除效果最好。NO2--N浓度在沿程中出现积累现象，可能是在此阶段溶解氧浓度较低导致硝化反应不完全。门水平上丰度较高的菌门为变形菌门（Proteobacteria）和拟杆菌门（Bacteroidetes），二者均为反硝化脱氮过程中常见的自养反硝化微生物。
Abstract:
To investigate the effects of different operating parameters on the advanced nitrogen removal performance of a self-cleaning biological filter, an activated coke-based self-cleaning biological filter (AC-DNBF) was constructed. By adjusting the filtration velocity and carbon-to-nitrogen ratio (C/N), the microbial community composition was analyzed, the efficiency of the AC-DNBF for advanced nitrogen removal from the effluent of a municipal wastewater treatment plant was evaluated, and the transformation patterns of nitrogen along the filter depth were studied. The results showed that at a filtration velocity of 4.5 cm/h and a C/N ratio of 3, the AC-DNBF achieved the highest average removal rates for NH4+-N, NO3--N, and TN, reaching 46.36%, 96.30%, and 79.69%, respectively. Under these conditions, the average effluent concentrations of NO3--N, TN, and NH4+-N were 0.35 mg/L, 2.96 mg/L, and 2.44 mg/L, respectively. Analysis of the nitrogen transformation patterns along the filter depth revealed that the rate of decrease in NH4+-N concentration showed no significant correlation with filter layer height. The AC-DNBF exhibited high efficiency in NO3--N removal, with concentration descent rates at different filter depths (2#, 3#, 4#, and 5#) of 55.89%, 20.72%, 10.82%, and 5.50%, respectively. Notably, the bottom layer of activated coke in the AC-DNBF demonstrated the best NO3--N removal performance. Accumulation of NO2--N was observed along the filter depth, which could be attributed to incomplete nitrification due to low dissolved oxygen concentrations at this stage. At the phylum level, the dominant bacterial phyla were Proteobacteria and Bacteroidetes, both of which were common autotrophic denitrifying microorganisms in denitrification processes.

相似文献/References:

[1]王赛,时玉龙,蒋奇海,等.两种碳基材料对二级出水中有机物的去除特性[J].中国给水排水,2021,37(5):43.
　WANG Sai,SHI Yu-long,JIANG Qi-hai,et al.Removal Characteristics of Organic Matters from Secondary Effluent by Two Types of Carbon Based Adsorbent[J].China Water & Wastewater,2021,37(9):43.

更新日期/Last Update: 2026-05-01