| 两相厌氧条件下升流式污泥床的起动和污泥颗粒化 |
| 摘要点击 1734 全文点击 1350 投稿时间：1987-09-03 修订日期：1988-04-08 |
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| 中文摘要 |
| 荷兰Wageningen农业大学Lettinga,G.[1]等在七十年代发展的升流式污泥床(UASB)由于处理效果显著而引人注目,但升流式污泥床的起动过程需时长、难度大,颗粒污泥的培养更是艰巨,污泥颗粒化的机理也不十分清楚,因此探索污泥颗粒化的机理和条件是发展这种装置所必须解决的问题。本实验就是探索在以活性高、沉降性差的细小絮状污泥作种子污泥、采用两相厌氧工艺时升流式污泥床的起动和颗粒污泥的培养问题。 |
| 英文摘要 |
| Start-up of sludge blanket reactor and granulation of sludge are investigated, with highly active and poorly set-tleable sludge as seed and glucose as substrate, under two-phase mcsophlic anaerobic digestion (the acid phase is an upflow reactor of 4.71 without three phase separator within it and methane phase is a typical tower-shaped UASB reactor of 12.31). Requirements for the cultivation of granules are presented. And physicochemical properties of the cultivated granules are analysed systematically. It is shown that the granules are well settleable and highly methanogenic, with settling velocity of 97.1% of granules >2mm/s and methanogenic activity of 811.2 ml CH4 STP/gVSS.d and 2.73g COD/gVSS.d. The reactor can retain large amounts of granules with its concentration of 56g VSS/I., resulting in a high treatability, up to 80kg COD/m3.d with soluble COD removal of 75-80%. |
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