| 污泥稳态厌氧消化过程的控制 |
| 摘要点击 489 全文点击 566 投稿时间：1987-08-14 |
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| 中文关键词 |
| 英文关键词 |
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| 中文摘要 |
| 污泥中温厌氧消化的温度幅动允许值较宽,约±2.8℃,易达到均匀搅拌,能耗少,尽管两阶段厌氧消化设施有一系列优点,但投资、运行费昂贵。因此,单阶段中温厌氧消化仍成为污泥消化的主流[1]。各国的研究目标集中在稳态运行的条件控制以及消化效率的提高方面。 |
| 英文摘要 |
| Steady performance of anaerobic digestion of sludge has been made under moderate temperature at one stage, in which detention time was shortened to 15—20 days However 15 days are available with a view of economic efficiency. 9% dry solid of sludge can be taken where polyelectrolyte ZAT is added into sludge and then dewa-tered machanically. Volatile acid satisfactorily indicates-the velocity and extent of acidation and of producing methane. The pH value in digestion process depends mainly on buffer of NH4HCO3-NH4Ac, and 3000 ppm-NH3-N will not poison methanogenic bacteria. If 0.02g CaCO3/g OS is added to feed sludge, detention time will be shortened and inhibition of volatile acid is avoidable. Control over the process will keep the rate of producing gas constant, and availability of the digester will increase three times. |
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