| 高温和中温ASBR处理热水解污泥的对比 |
| 摘要点击 3049 全文点击 2145 投稿时间：2004-04-02 修订日期：2004-07-14 |
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| 中文关键词 污泥 厌氧序批式反应器 高温消化 中温消化 |
| 英文关键词 sewage sludge ASBR thermophilic digestion mesophilic digestion |
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| 中文摘要 |
| 进行了高温、中温厌氧序批式反应器(ASBR)处理热水解污泥的对比试验研究.在HRT＝10d,总COD(TCOD)容积负荷为5.42 kg/(m3·d) 的条件下,高温、中温ASBR的TCOD去除率分别为56.20%、61.66%,污泥COD的产气率(CH4)分别为199、219 mL/g.ASBR能有效积累污泥悬浮固体从而保持较高的固体停留时间(SRT),高温、中温ASBR的平均SRT分别为30、37d.同中温ASBR比较,高温ASBR的微生物形态单一、种类少和产甲烷活性较低,因此高温ASBR的处理效率和产气率较中温低.
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| 英文摘要 |
| Parallel laboratory experiments were conducted to investigate the performance of thermophilic and mesophilic anaerobic sequencing batch reactor (ASBR) for the digestion of thermo-hydrolyzed sewage sludge. The average total COD (TCOD) removal rates of thermophilic, mesophilic ASBR at 10-day HRT and 5.42 kg/(m3·d) TCOD loading rate were 56.20% and 61.66%, and the biogas production rates of TCOD in feeding sludge were 199 and 219 mL/g, respectively. ASBR has the unique capability of maintaining high-solid content and keeping a high solid retention time (SRT). The average SRT of thermophilic, mesophilic ASBR were 30 and 37d,respectively. Compared to mesophilic ASBR, thermophilic ASBR show considerably fewer microbial morphologies and lower methane-production, which might result in a relatively lower treatment efficiency in thermophilic ASBR than that in mesophilic ASBR. |
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