中国环境科学

原位覆盖对湖泊沉积物磷释放及界面特征影响研究

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席银 ¹^,² , 瞿文风 ¹^,²^,³ , 付德宇 ¹^,² , 王圣瑞 ⁴^,⁵^,⁶^,^* , 韩元 ¹^,² , 胡丽丽 ¹^,³ , 李玉 ¹^,³ , 王鹏 ¹^,³

中国环境科学 | 环境生态 2025,45(11): 6241-6249

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中国环境科学 |环境生态 2025 , 45 (11) : 6241 -6249

原位覆盖对湖泊沉积物磷释放及界面特征影响研究

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席银¹^,², 瞿文风¹^,²^,³, 付德宇¹^,², 王圣瑞⁴^,⁵^,⁶^,^*, 韩元¹^,², 胡丽丽¹^,³, 李玉¹^,³, 王鹏¹^,³

作者信息

^1.北京首创生态环保集团股份有限公司，北京 100044

^2.北京水星环境有限公司，北京 101599

^3.四川青石建设有限公司北京第一分公司，北京 100000

^4.北京师范大学珠海校区水科学研究中心，广东珠海 519087

^5.粤港水安全保障联合实验室，广东珠海 519087

^6.云南农业大学资源环境学院，云南昆明 650201

通讯作者:

^* 责任作者，教授，wangsr@bnu.edu.cn

作者简介:

席银（1991-），男，湖北宜昌人，工程师，硕士，主要从事河湖水环境治理方面的研究．发表论文10余篇．xiyin2016@163.com.

Effect of in-situ capping on phosphorus release and interface characteristics of lake sediments

Yin XI¹^,², Wen-feng QU¹^,²^,³, De-yu FU¹^,², Sheng-rui WANG⁴^,⁵^,⁶^,^*, Yuan HAN¹^,², Li-li HU¹^,³, Yu LI¹^,³, Peng WANG¹^,³

Affiliations

^1.Beijing Capital Eco-Environment Protection Group Co. Ltd., Beijing 100044, China

^2.Beijing Mercury Environment Co., Ltd., Beijing 101599, China

^3.Sichuan Qing shi Construction Co., Ltd. Beijing First Branch Company 100000, China

^4.Center of Water science, Beijing Normal University at Zhuhai, Zhuhai 519087, China

^5.Guangdong-Hong Kong Joint Laboratory for Water Security, Zhuhai 519087, China

^6.College of Resources and Environment, Yunnan Agricultural University, Kunming 650201, China

出版时间: 2025-11-20

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摘要

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通过室内模拟研究了洱海沉积物原位覆盖氧化铝（Al组）和氧化铁（Fe组）磷释放控制效果,基于沉积物总磷（TP）、磷形态、溶解性有机质（DOM）和沉积物-水界面特征参数,分析了两种材料的控磷效果差异及其作用机制.结果表明,与对照组（CK组）相比,Al组和Fe组均显著抑制了TP和活性磷（SRP）的最大释放量（Q_max）,抑制率达到了42.61%和40.64%（TP）、45.04%和46.29%（SRP）.两组材料覆盖均促进了沉积物总磷向下层迁移埋藏,同步增强了上层沉积物活性磷（弱吸附态磷（NH₄Cl-P）、可还原态磷（BD-P）和金属氧化物结合态磷（NaOH-P））向惰性磷（钙结合态磷（HCl-P）和难溶态磷（Residual-P））转化,进而降低了沉积物磷释放的直接来源.Al组和Fe组的DOM含量变化与TP含量变化趋势一致,两组的DOM分子量和芳香族结构复杂化均呈增强趋势,且DOM矿化速率均被抑制.在腐殖化程度上,Fe组DOM腐殖化程度有所增强,而Al组则相反,沉积物DOM分解而产生的磷释放减弱.此外,Al组和Fe组沉积物-水界面的扩散边界层（DBL）厚度、氧化还原电位（E_h）及其衰减速率均有所升高,Fe组氧气穿透深度（OPD）显著高于CK组,而Al组刚好相反.可见,两种材料均改变了界面厚度和氧化环境,增加了沉积物磷释放的通道阻力.以上研究结果表明,氧化铝和氧化铁均能有效控制湖泊沉积物磷释放,但其作用机制存在显著差异,此发现可为选择富营养化湖泊沉积物原位治理材料提供关键参考.

关键词

原位覆盖 / 磷释放 / 磷形态 / 溶解性有机质 / 沉积物-水界面

Abstract

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The effects of in-situ coverage of aluminum oxide (Al group) and iron oxide (Fe group) on phosphorus release from Erhai Lake sediments were evaluated through an indoor laboratory study. Base on sediment total phosphorus (TP), phosphorus forms, dissolved organic matter (DOM), and sediment water interface characteristic parameters, the differences and mechanisms of phosphorus control effects between the two materials were analyzed. The results showed that compared to the control group (CK group), both the Al and Fe groups significantly inhibited the maximum release amount (Q_max) of TP and reactive phosphorus (SRP), reducing them by 42.61% and 40.64% for TP, 45.04% and 46.29% for SRP, respectively. The downward migration and burial of TP in sediments were promoted by both types of material coverage, while the transformation of active phosphorus in upper sediments (weakly adsorbed phosphorus (NH₄Cl-P), reducible phosphorus (BD-P), and metal-oxide bound phosphorus (NaOH-P)) into inert phosphorus, namely(calcium bound phosphorus (HCl-P) and insoluble phosphorus (Residual-P), was simultaneously enhanced , thereby reducing the direct source of phosphorus release from sediments. The changes in DOM content in the Al and Fe groups followed the same trend as TP content. The molecular weight and aromatic structural complexity of DOM increased in both groups, and the mineralization rate of DOM was inhibited. The degree of DOM humification was enhanced in the Fe group, while the opposite trend was observed in the Al group, where phosphorus release produced by DOM decomposition was reduced. The diffusion boundary layer (DBL) thickness, oxidation-reduction potential (E_h), and decay rate of the sediment water interface in both the Al and Fe groups were all increased. Oxygen penetration depth (OPD) was markedly greater in Fe group than in the CK group, whereas it was lower in the Al group. Overall both materials changed the interface thickness and oxidation environment, increasing the channel resistance for phosphorus release from sediments. These findings demonstrate that both alumina and iron oxide can effectively control phosphorus release from lake sediments, although through distinct mechanisms, providing a scientific basis for selecting in-situ remediation materials in eutrophic lake sediments.

Key words

in situ coverage / phosphorus release / phosphorus forms / dissolved organic matter / sediment-water interface

引用本文

席银, 瞿文风, 付德宇, 王圣瑞, 韩元, 胡丽丽, 李玉, 王鹏. 原位覆盖对湖泊沉积物磷释放及界面特征影响研究. 中国环境科学, 2025 , 45 (11) : 6241 -6249 .

Yin XI, Wen-feng QU, De-yu FU, Sheng-rui WANG, Yuan HAN, Li-li HU, Yu LI, Peng WANG. Effect of in-situ capping on phosphorus release and interface characteristics of lake sediments[J]. China Environmental Science, 2025 , 45 (11) : 6241 -6249 .

基金

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云南省重点研发计划专项(2022YFC3204400)
北京首创生态环保股份有限公司内部课题(SCST202301)

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2025年第45卷第11期

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接收时间：2025-03-17
首发时间：2026-10-08
出版时间：2025-11-20

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收稿日期：2025-03-17

基金

云南省重点研发计划专项(2022YFC3204400)

北京首创生态环保股份有限公司内部课题(SCST202301)

作者信息

^1.北京首创生态环保集团股份有限公司，北京 100044

^2.北京水星环境有限公司，北京 101599

^3.四川青石建设有限公司北京第一分公司，北京 100000

^4.北京师范大学珠海校区水科学研究中心，广东珠海 519087

^5.粤港水安全保障联合实验室，广东珠海 519087

^6.云南农业大学资源环境学院，云南昆明 650201

通讯作者:

^* 责任作者，教授，wangsr@bnu.edu.cn

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https://castjournals.cast.org.cn/joweb/zghjkx/CN/1314918458085704452

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2种不同金属材料的力学参数

科 Family	属数 Number of genus	种数 Number of species	占总种数比例 Percentage of total species (%)	属 Genus	种数 Number of species	占总种数比例 Percentage of total species (%)
鹅膏菌科Amanitaceae	2	11	5.26	鹅膏菌属 Amanita	10	4.78
小菇科 Mycenaceae	2	12	5.74	丝盖伞属 Inocybe	5	2.39
多孔菌科 Polyporaceae	8	14	6.70	蜡蘑属 Laccaria	5	2.39
红菇科 Russulaceae	3	23	11.00	小皮伞属 Marasmius	6	2.87
				小菇属 Mycena	11	5.26
				光柄菇属 Pluteus	5	2.39
				红菇属 Russula	17	8.13
				栓菌属 Trametes	5	2.39

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