摘要
底泥耗氧是自然水体氧平衡中很重要的一部分。底泥耗氧的影响因素众多。目前国内对底泥耗氧研究大多处于实验室阶段，数学模型的应用很少。阐述了底泥耗氧机理及底泥耗氧数学模型的研究进展，重点介绍了国外已成功验证与应用的底泥通量模型的研究情况。利用底泥通量数学模型探讨了苏州河沿岸合流污水泵站溢流对SOD的影响。结果表明：平均每次沿岸合流泵站雨天排江（CSOs）对苏州河底泥耗氧量的贡献是26．5％-41．2％。底泥疏浚短期可能会削减SOD，但CSOs对SOD的影响是长期的。
Sediment play an important role in balancing dissolved oxygen in rivers. Sediment Oxygen Demand （SOD） is affected by many factors. Many of the current river water quality studies focuses on lab measurement of SOD, modeling study with consideration of sediment flux is just recently conducted in a few projects. This paper summarized recent development on sediment flux modeling and the SOD of Suzhou Creek contributed by combined sewer overflows （CSOs） was studied using the sediment flux modeling. Result show that 26. 5% -41.2% of SOD of Suzhou Creek is due to the flux of TON and TOC from the CSOs, which implies that dredging can only remove Suzhou Creek SOD in short term, and SCOs will build up SOD and lead to low water DO problems in long term.
出处
《环境科学与管理》
CAS
2008年第3期58-62,共5页
Environmental Science and Management
