LiuJunxi,JianLongyu,MaHaiyuan,et al.Influence of Biochar Addition Amount on Nitrogen Removal Efficiency of Pyrite Bioretention Cells[J].China Water & Wastewater,2026,42(13):122-129.
生物炭添加量对硫铁矿生物滞留设施去除氮素的影响
- Title:
- Influence of Biochar Addition Amount on Nitrogen Removal Efficiency of Pyrite Bioretention Cells
- Keywords:
- pyrite bioretention cell; biochar; nitrogen removal contribution rate; microbial diversity
- 摘要:
- 硫铁矿生物滞留设施因反硝化电子供体有限，在径流高氮负荷条件下存在脱氮性能较低的问题。生物炭凭借其高比表面积、电子穿梭能力以及优异的氨氮（NH4+-N）吸附能力，可以添加到生物滞留设施中来提高对氮素的去除效果。然而，目前不同添加量的生物炭对设施去除氮素的影响尚没有量化。针对这些不足，构建了不同生物炭-硫铁矿配比的生物滞留设施，结合模拟降雨试验与微生物高通量测序系统分析生物炭添加量对氮素去除效能的影响。结果表明，淹没区添加10%生物炭的设施通过优化异养与自养反硝化协同路径，显著提升了对NO3--N与TN的去除率。微生物分析进一步表明，添加10%生物炭时的Chao1指数较纯硫铁矿组提升了122%，且通过反硝化功能菌属norank_f_Anaerolineaceae与Bacteroidota门的富集，强化了碳氮代谢与电子传递效率。
- Abstract:
- Due to the limited denitrifying electron donors, the bioretention cells of pyrite have low nitrogen removal performance under the condition of high nitrogen load in runoff. Biochar, with its high specific surface, electron shuttle capacity, and excellent ammonia nitrogen (NH4+-N) adsorption capacity, can be added to bioretention cells to improve nitrogen removal efficiency. However, the effect of different amounts of biochar on nitrogen removal efficiency has not been quantified.In view of the above deficiencies, this study constructed bioretention cells with different ratios of biochar and pyrite combined with simulated rainfall test and microbial high-throughput sequencing, systematically analyzed the effect of biochar addition on nitrogen removal. The results showed that the removal rates of NO3--N and TN were significantly improved by optimizing the synergistic path of heterotrophic and autotrophic denitrification in the facilities with 10% biochar addition in the submerged zone. Microbial analysis further showed that the Chao1 index of the facility with 10% biochar added increased by 122% compared with that of the pure pyrite group, and the enrichment of norank_f_Anaerolineaceae and Bacteroidota synergistically enhanced the efficiency of carbon and nitrogen metabolism and electron transfer.
相似文献/References:
[1]高丽娟,王枝,王怡,等.生物炭对污泥高温厌氧消化连续运行系统的影响[J].中国给水排水,2023,39(17):26.
GAOLi-juan,WANGZhi,WANGYi,et al.Effect of Biochar on Continuous Operation of Sludge Thermophilic Anaerobic Digestion System[J].China Water & Wastewater,2023,39(13):26.
[2]胡波,周奥,牛慧斌,等.香蒲根富Fe生物炭制备及其光催化降解有机污染物[J].中国给水排水,2022,38(15):55.
HUBo,ZHOUAo,NIUHui-bin,et al.Preparation of Fe?enriched Biochar from Typha Orientalis Presl Root and Its Photocatalytic Degradation of Organic Pollutants[J].China Water & Wastewater,2022,38(13):55.
[3]郝晓地,李佳勇,郝丽婷,等.剩余污泥制取生物炭可行性分析与评价[J].中国给水排水,2023,39(20):1.
HAOXiao-di,LIJia-yong,HAOLi-ting,et al.Analysis and Assessment on the Feasibility of Sludge-based Biochar[J].China Water & Wastewater,2023,39(13):1.
[4]魏海杉,王怡,王文怀,等.浮床植物收割策略及资源化制取生物炭吸附重金属[J].中国给水排水,2023,39(5):17.
WEIHai-shan,WANGYi,WANGWen-huai,et al.Harvesting Strategy of Ecological Floating Bed Plants and Its Utilization to Prepare Biochar for Heavy Metals Adsorption[J].China Water & Wastewater,2023,39(13):17.
[5]沈浩楠,张倩,王弘宇,等.有机物浓度对主流厌氧氨氧化工艺脱氮性能的影响[J].中国给水排水,2025,41(13):1.
SHENHao-nan,ZHANGQian,WANGHong-yu,et al.Effect of Organic Matter on Nitrogen Removal of Municipal Wastewater by Anammox Process with Different Fillers[J].China Water & Wastewater,2025,41(13):1.
[6]李左月,张毅彪,申遥,等.生物炭对污泥碱热水解液中激励素类物质的吸附特征[J].中国给水排水,2025,41(15):8.
LIZuo-yue,ZHANGYi-biao,SHENYao,et al.Adsorption Characteristics of Microbial Nutrient Stimulants in Sludge Alkaline Thermal Hydrolysate by Biochar with Different Particle Sizes[J].China Water & Wastewater,2025,41(13):8.
[7]宋欣雨,李大鹏,刘松琪.铁炭基间歇曝气人工湿地脱氮和温室气体排放规律[J].中国给水排水,2025,41(21):10.
SONGXin-yu,LIDa-peng,LIUSong-qi.Nitrogen Removal Effect and Greenhouse Gas Emission in Fe-C Based Intermittent Aeration Constructed Wetlands[J].China Water & Wastewater,2025,41(13):10.