| A2N系统中低碳污水的反硝化除磷优化及运行稳定性 |
| 摘要点击 5512 全文点击 2374 投稿时间:2010-04-24 修订日期:2010-06-30 |
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| 中文关键词 双泥系统 反硝化除磷 低碳污水 聚-β-羟基丁酸盐 序批式移动床生物膜反应器 |
| 英文关键词 two-sludge system denitrifying phosphorus removal wastewater with low carbon source poly-β-hydroxybutyrate (PHB) sequencing batch moving bed biofilm reactor |
| DOI |
| 作者 | 单位 | | 张耀斌 | 大连理工大学环境科学与工程系,工业生态与环境工程教育部重点实验室,大连116024 | | 邢亚彬 | 大连理工大学环境科学与工程系,工业生态与环境工程教育部重点实验室,大连116024 | | 秦四飞 | 大连理工大学环境科学与工程系,工业生态与环境工程教育部重点实验室,大连116024 | | 全燮 | 大连理工大学环境科学与工程系,工业生态与环境工程教育部重点实验室,大连116024 | | 陈硕 | 大连理工大学环境科学与工程系,工业生态与环境工程教育部重点实验室,大连116024 |
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| 中文摘要 |
| 采用序批式生物移动床(SBMBBR),通过优化反应条件可以取得较高的聚-β-羟基丁酸盐(PHB)富集效率,通过双泥系统的操作,可以实现低碳下的高效反硝化除磷.在进水COD 200 mg/L、pH为中性的生活污水中,并在搅拌速度为80 r/min下,磷的去除率达到83.7%,NO-3-N的去除率达到81.4%,NO-2-N的去除率接近100%,取得较好的反硝化除磷作用.较大的生物量是保证较高效率的反硝化除磷的关键之一.采用双泥系统运行SBMBBR,可以获得稳定的、较高效率的脱氮除磷.在COD为140~170 mg/L, TN为34~42 mg/L低碳氮比的实际废水处理中,磷的去除率达到89.2%,TN的去除率达到84.5%.在处理过程中,排泥中的磷量基本与进水中磷的量一致,未发现磷的其它去除路径. |
| 英文摘要 |
| Poly-β-hydroxybutyrate (PHB) could be efficiently accumulated under optimized conditions in a sequencing batch moving bed biological reactor (SBMBBR), and a high performance of denitrifying phosphorus removal in the reactor could be achieved by coupling with a two-sludge system. Denitrifying phosphorus removal achieved the highest efficiency under influent COD of 200mg/L, neutral pH and stirring speed of 80 r/min. The removal rates of phosphorus, NO-3-N and NO-2-N reached 83.7%, 81.4% and above 100%, respectively. High biomass in the SBMBBR is one of keys to improve the performance in removal of nitrogen and phosphorus. When the SBMBBR was conducted under a two-sludge system, stable and high performance was obtained. Removal rates of phosphorus and TN reached 89.2% and 84.5% under the influent COD of 140-170 mg/L and TN of 34-42 mg/L, respectively. In the process, phosphorus content in excess sludge approached to that in the feeding, and other path of phosphorus removal was not found. |
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