摘要
稳定性是废水厌氧生物处理系统的重要特性。探讨了稳定性的内涵和表征参数,分析了负荷冲击下系统失稳的机理和表现,剖析了稳定性的影响因素。结果表明:冲击负荷对厌氧系统有重大影响,其典型影响体现在运行性能恶化、挥发性脂肪酸累积、pH值和碱度下降、产气量和产气成分变化、污泥流失等方面。厌氧系统抗负荷冲击能力受各种系统特性和冲击特点制约。在此基础上,提出了增强厌氧系统稳定性的对策。
Stability is an important characteristic of anaerobic wastewater treatment systems. The definition and measuring parameters of stability are discussed. Moreover, the mechanism and behavior of the bioreactor operational instability caused by load shock, as well as the influence factors of stability are analyzed. The results show that the load shocks are supposed to greatly influence the operation of anaerobic reactors. The typical responses of anaerobic reactors to load shock include a decrease in performance, accumulation of volatile fatty acids, drop in pH and alkalinity, change in biogas production and composition, and sludge washout. The tolerance of anaerobic reactors to shocks is affected by the factors related to the treatment system as well as the variation of load. Accordingly, some proposals on the enhancement of stability are put forward.
出处
《化工进展》
EI
CAS
CSCD
北大核心
2006年第7期770-774,779,共6页
Chemical Industry and Engineering Progress
基金
国家自然科学基金资助项目(30070017)
浙江省重大攻关项目(2003C13005)
关键词
厌氧废水处理系统
稳定性
负荷冲击
非稳态
anaerobic wastewater treatment system
stability
load shock
unsteady state
