| C/P比与磷回收对生物营养物去除系统影响的试验研究 |
| 摘要点击 2745 全文点击 2265 投稿时间：2007-12-22 修订日期：2008-02-25 |
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| 中文关键词 BCFS工艺 COD/P 侧流比 厌氧上清液 化学磷回收 聚磷菌（PAOs、DPB） |
| 英文关键词 BCFS system COD/P ratio side-stream ratio anaerobic supernatant chemical phosphate recovery PAOs,DPB |
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| 中文摘要 |
| 以生物营养物去除系统——BCFS工艺为基础，考察了不同C/P（COD/P）和厌氧上清液侧流比对系统处理效果的影响.结果表明，当碳源充足时，TP去除率稳定在87%左右，能够保证较低的出水TP（≤0.8 mg·L-1）.当进水COD/P降低到24以下时，TP去除率迅速降至62%，出水TP升至5 mg·L-1以上.在此进水水质下，以厌氧池上清液侧流方式辅以化学磷回收;当侧流比增加至30%时，出水TP浓度降低至1 mg·L-1以下；相应的磷回收量为进水TP负荷的54%.因此，化学磷回收具有辅助生物除磷的双重作用. |
| 英文摘要 |
| Based on a BNR system — BCFS，the effect of COD/P and phosphate recovery on the BCFS process was experimentally investigated. The results indicate that a higher P-removal efficiency (87%) and a good P-effluent quality (≤0.8 mg·L-1) could be maintained at COD/P ratios higher than 24. When COD/P was reduced below 24, the P-removal efficiency was suddenly decreased down to 62% and the P-effluent went up to 5 mg·L-1. Under the circumstance, chemical phosphate recovery in the side-stream of anaerobic supernatant was combined with bio-P removal. When the side-stream increased up to 30%, the P-effluent went back to <1 mg·L-1, with a corresponding phosphate recovery efficiency of 54%. |
