磷回收提高生物除磷效果的验证  

Experimental Verification on Enhancing Bio-P Removal by Phosphorus Recovery from Anaerobic Supernatant

作　　者：郝晓地[1] 戴吉[1] 周军[2] 常江[2] 甘一萍[2] 

机构地区：[1]北京建筑工程学院可持续环境生物技术研发中心,北京100044 [2]北京城市排水集团有限责任公司工程咨询分公司,北京100022

出　　处：《中国给水排水》2006年第17期22-25,共4页China Water & Wastewater

基　　金：建设部2005年科学技术项目(05-K2-8);北京市自然科学基金资助项目(2006-8063028);北京可持续水与废物循环利用技术"学术创新团队"项目(BJE10016200611);北京市留学人员科技活动择优资助项目(2005)

摘　　要：在前期的模拟试验中曾预测,磷回收介入生物营养去除(BNR)工艺,不仅有利于提高生物除磷效果,而且可以降低生物除磷所需的进水COD/P值。为了证实这一预测,以传统A2/O工艺作为主要流程进行试验。结果表明,当侧流比达到20%时,满足排放标准(TP<1 mg/L)的最低COD/P值从原来的35降低到25,此时对磷的有效回收率为34%。这意味着,在生物除磷过程中可节约25%30%的碳源。A previous modeling study predicted that phosphorus removal and recovery can be com- bined in a biological nutrient removal （BNR） process, which would benefit for improving the effluent quality of bio-phosphorus removal and for lowering the ratio of the influent COD/P required for bio-phosphorus removal. To verify this modeling prediction, an experiment using traditional A^2/O process was carried out. The experimental results are quantitatively in agreement with the modeling prediction. When the stripping ratio reaches 20%, the minimal COD/P ratio to satisfy the effluent standard （TP 〈 1 mg/L） can be lowered from 35 to 25 at a phosphorus recovery efficiency of 34%. This suggests a COD saving of 25% - 30% in bio-phosphorus removals.

关 键 词：生物营养物去除 磷回收 A^2/O 厌氧上清液 COD/P 生物除磷 

分 类 号：X703[环境科学与工程—环境工程]