竹秸秆作为污水反硝化绿色廉价碳源的研究

IF 3.8 4区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES

Water, Air, & Soil Pollution Pub Date : 2025-05-24 DOI:10.1007/s11270-025-08135-3

Xiaobing Hu, Xiaoyu Chen, Kaihao Zhai, Weiwei Song, Chaowei Liu, Yue Gao

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引用次数: 0

摘要

为了解决生物异养反硝化中碳源不足的问题，提供一种绿色、低成本的替代方案，本研究探讨了利用竹秸秆作为碳源的可行性。在中国东部地区采集到毛竹（Phyllostachys pubescens, Pp）、硫竹（Phyllostachys sulphurea, Ps）、黑竹（Phyllostachys nigra, Pn）、膜竹（Dendrocalamus membranaceus Munro, Dm）和青竹（Bambusa glaucescens, Bg） 5种竹茎。系统评价了它们的碳释放能力和反硝化潜力。结果表明，竹材中纤维素含量（59.06%）高于木质素含量（30.88%）；在反硝化的初始阶段，高集成度的纤维素作为碳源可以促进硝酸盐的去除。其中，Pn和Bg的碳释放率最高，分别为1.57±0.83 COD·mg·（g·d）−1和1.05±0.13 COD·mg·（g·d）−1，具有较好的硝酸盐去除效果。当出水NO₃⁻-N浓度为15 mg·L - 1时，其硝酸盐去除率分别达到71.53%±19.36和79.20±21.49%。而Pn则表现出较高的氮磷释放量(累积TN: 1.27 mg·g毒血症；累积TP: 0.048 mg·g毒血症)，同时反硝化后出水的COD浓度升高（63.10±77.86 mg·L毒血症）。因此，Bg以其平衡的性能和较低的污染物释放量被认为是最合适的生物反硝化碳源。图形抽象

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Study on Bamboo Stalks as Green and Low-Priced Carbon Sources for Wastewater Denitrification

To address the issue of insufficient carbon sources in biological heterotrophic denitrification and to provide a green and low-cost alternative, this study investigated the feasibility of using bamboo stalks as a carbon source. Five types of bamboo stalks—Phyllostachys pubescens (Pp), Phyllostachys sulphurea (Ps), Phyllostachys nigra (Pn), Dendrocalamus membranaceus Munro (Dm), and Bambusa glaucescens (Bg)—were collected from eastern China. Their carbon release capacities and denitrification potentials were systematically evaluated. The results showed that bamboo contains higher integrated cellulose (59.06%) in bamboo stalks, which is much higher than lignin content (30.88%). A higher integrated cellulose as carbon sources in the initial stage of denitrification can promote the nitrate’s removal. Among the tested bamboo species, Pn and Bg exhibited the highest carbon release rates, at 1.57 ± 0.83 COD·mg·(g·d)⁻¹ and 1.05 ± 0.13 COD·mg·(g·d)⁻¹, respectively, which corresponded to effective nitrate removal performance. When the effluent NO₃⁻-N concentration was 15 mg·L⁻¹, their nitrate removal rates reached 71.53% ± 19.36 and 79.20 ± 21.49%, respectively. However, Pn showed higher nitrogen and phosphorus release (cumulative TN: 1.27 mg·g⁻¹; cumulative TP: 0.048 mg·g⁻¹), along with an elevated COD concentration (63.10 ± 77.86 mg·L⁻¹) in the effluent after denitrification. Therefore, Bg was identified as the most suitable carbon source for biological denitrification due to its balanced performance and lower pollutant release.

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来源期刊

Water, Air, & Soil Pollution 环境科学-环境科学

CiteScore

4.50

自引率

6.90%

发文量

448

审稿时长

2.6 months

期刊介绍： Water, Air, & Soil Pollution is an international, interdisciplinary journal on all aspects of pollution and solutions to pollution in the biosphere. This includes chemical, physical and biological processes affecting flora, fauna, water, air and soil in relation to environmental pollution. Because of its scope, the subject areas are diverse and include all aspects of pollution sources, transport, deposition, accumulation, acid precipitation, atmospheric pollution, metals, aquatic pollution including marine pollution and ground water, waste water, pesticides, soil pollution, sewage, sediment pollution, forestry pollution, effects of pollutants on humans, vegetation, fish, aquatic species, micro-organisms, and animals, environmental and molecular toxicology applied to pollution research, biosensors, global and climate change, ecological implications of pollution and pollution models. Water, Air, & Soil Pollution also publishes manuscripts on novel methods used in the study of environmental pollutants, environmental toxicology, environmental biology, novel environmental engineering related to pollution, biodiversity as influenced by pollution, novel environmental biotechnology as applied to pollution (e.g. bioremediation), environmental modelling and biorestoration of polluted environments. Articles should not be submitted that are of local interest only and do not advance international knowledge in environmental pollution and solutions to pollution. Articles that simply replicate known knowledge or techniques while researching a local pollution problem will normally be rejected without review. Submitted articles must have up-to-date references, employ the correct experimental replication and statistical analysis, where needed and contain a significant contribution to new knowledge. The publishing and editorial team sincerely appreciate your cooperation. Water, Air, & Soil Pollution publishes research papers; review articles; mini-reviews; and book reviews.