曝气扰动对黑臭水体底泥腐殖质的影响
Effect of aeration disturbance on humus in sediment of black and odorous water body
王莉 1李亭亭 2姜惠源 1刘萌硕1
作者信息
- 1. 郑州大学生态与环境学院,河南郑州 450001
- 2. 河南省山水地质旅游资源开发有限公司,河南郑州 450001
- 折叠
摘要
以农村黑臭水体为研究对象,结合三维荧光光谱(EEMs)、紫外-可见吸收光谱(UV-vis)与傅里叶红外光谱(FTIR)技术,研究不同曝气处理方式对底泥腐殖质组分含量的影响,并探讨不同曝气方式下腐殖质的光谱特征变化.结果显示,与对照组相比曝气处理后富里酸含量下降,胡敏酸和胡敏素含量上升,腐殖质总量相比对照组升高0.99～2.34 g/kg,表层底泥表观黑臭程度明显下降.PQ值(腐殖化指数)相比对照组升高4.08％～7.82％,反映出曝气处理后湖泊生产力升高,系统内生物量增大,腐殖质累积.曝气处理后荧光特征峰和紫外吸收峰强度均降低,红外光谱吸收峰强度升高,泥曝气处理后6个红外吸收峰强度均升高,且均高于水曝气组.
Abstract
Taking rural black and odorous water body as the research object,the effects of different aer-ation treatment methods on the content of humus components in sediments were studied by combining three-dimensional fluorescence spectroscopy(EEMs),uV-VIS and Fourier infrared spectroscopy(FT-IR),and the spectral characteristics of humus were discussed under different aeration methods.The re-sults showed that compared with the control group,the content of fulic acid decreased,the content of humic acid and humacin increased,the total humus content increased by 0.99～2.34 g/kg,and the PQ value(humus index)increased by 4.08％～7.82％,reflecting the increase of lake productivity,the in-crease of biomass in the system and the accumulation of humus after aeration.After the aeration treat-ment,the fluorescence characteristic peak and the ultraviolet absorption peak intensity were reduced,and the infrared spectral absorption peak intensity was increased.After aeration treatment,the intensi-ty of fluorescence characteristic peak and ultraviolet absorption peak decreased,while the intensity of infrared absorption peak increased.After sludge aeration treatment,the intensity of six infrared ab-sorption peaks increased,which were higher than those of water aeration group.
关键词
曝气/农村黑臭水体/底泥腐殖质组分/光谱特性Key words
aeration/rural black and odorous water body/humus component of sediment/spectral characteristics引用本文复制引用
基金项目
国家自然科学基金(U1704125)
水体污染控制与治理科技重大专项(2015ZX07204-002-05)
河南省高等院校重点科研项目(19B610004)
出版年
2024
NETL
NSTL
万方数据