摘要
对基于二沉池一维通量模型进行了综述,介绍了一维通量模型中沉降速率模型在二沉池设计和运行中的应用,对比了不同的污泥沉降性能参数(Sludge Settling Parameters,SSPs)与Vesilind沉降速率模型中参数ν0和a的关系,得出了搅拌条件下的污泥容积指数(SSVI3.5)是最具代表性的污泥沉降性能参数,其能更加全面准确地反映二沉池中活性污泥的性质和状态,SSVI3.5在一维通量模型中的应用使得模型更能接近实际的运行情况,同时指出了一维通量模型在实际应用中仍然存在的缺陷。
One-dimensional flux model of secondary settling tank was reviewed,and the application of settling velocity model of one-dimensional flux model in the design and operation of secondary settling tank was introduced. In addition,the relationships between the different sludge settling parameters（SSPs） andv0,a in Vesilind settling velocity model were compared.The stirred sludge volume index（SSVI3.5） was the most representative sludge settling parameter because it can reflect the properties of activated sludge more comprehensive and accurately in secondary settling tank,and its application in one-dimensional flux model was more close to the actual running situation. Meanwhile,the drawbacks of one-dimensional flux model in practical application were pointed out.
出处
《环境卫生工程》
2016年第4期72-76,共5页
Environmental Sanitation Engineering
基金
国家高技术研究发展计划(863计划)项目(2012AA063404)
城市污水处理厂节能降耗稳定运行技术集成研究与示范项目(2013ZX071314-001)
关键词
二沉池
一维通量模型
沉降速率模型
污泥沉降性能参数
secondary settling tank
one-dimensional flux model
settling velocity model
sludge settling parameters
