摘要
采用中温（35℃）两相厌氧消化工艺处理初沉污泥与剩余污泥的混合样（1∶1）,以实现污泥的稳定化。结果表明,在水力停留时间约为10 d、有机负荷为2.75 kgVS/（m^3·d）时,对TCOD的去除率可达46%,对VS的去除率为41%;产甲烷相反应器的最大比产甲烷活性为0.19LCH4/（gVS·d）,并保持相对稳定;两相反应器内污泥的比脱氢酶活性都出现了增长,并维持在25～32μgINTF/（mgVS·h）之间;经消化后污泥的沉降性和脱水性变差。
The mesophilic（35 ℃） two-phase anaerobic digestion（TPAD） process was used to treat mixed sludge from primary sedimentation and secondary sedimentation tanks（1 ∶1） to realize sludge stabilization.The results show that when HRT is about 10 days and organic loading rate is 2.75 kgVS/（m^3·d）,the removal rates of TCOD and VS are 46% and 41% respectively.The maximal specific methanogenic activity（SMA） of methanogenic phase reactor is 0.19 LCH4/（gVS·d） and keeps stable.The specific dehydrogenase activity（INT-DHA） of sludge in the two-phase reactor is increased,maintaining within the range of 25 to 32 μgINTF/（mgVS·h）.The settleability and dewaterability of sludge become poorer after the digestion.
出处
《中国给水排水》
CAS
CSCD
北大核心
2008年第5期1-4,共4页
China Water & Wastewater
基金
吉林省重大科技项目(20040405-1)
关键词
两相厌氧消化
剩余活性污泥
比产甲烷活性
比脱氢酶活性
two-phase anaerobic digestion
excess activated sludge
specific methanogenic activity
specific dehydrogenase activity
