Operation performance of an A/A/O process coupled with excess sludge ozonation and phosphorus recovery: A pilot-scale study
Operation performance of an A/A/O process coupled with excess sludge ozonation and phosphorus recovery: A pilot-scale study
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A/A/O 工艺与剩余污泥臭氧化和磷回收相结合的运行性能：中试规模研究
DOI：
10.1016/j.cej.2015.01.054
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发表时间：
2015-05
影响因子：
15.1
通讯作者：
Jiuhui Qu
中科院分区：
文献类型：
--
作者：
Zhimin Qiang;Lu Wang;Huiyu Dong;Jiuhui Qu
本研究调查了厌氧/缺氧/好氧（A/A/O）工艺与污泥臭氧化和磷（P）回收耦合的中试规模的长期运行性能，处理能力为1.0 m3 d −1。污泥臭氧氧化的批式实验表明，随着臭氧投加量的增加，污泥中有机物（以化学需氧量（COD）表示）、氮（N）和磷（P）的释放量增加。最佳臭氧剂量约为100 mg g− 1 MLSS（混合液悬浮固体），在此浓度下，污泥溶解效率达到35.5%。中试规模的处理系统连续运行141天，最高污泥减量效率达到85%。臭氧污泥回流（OSR）对反应器内COD和N去除率、混合液挥发性悬浮物/MLSS比值和污泥活性影响不大，但显著改善了污泥沉降性能。但由于剩余污泥排放量的减少，磷的去除受到明显抑制。COD和N的质量平衡表明，OSR提高有机矿化和反硝化。臭氧氧化污泥上清液中磷的回收率可达29%，显著提高了中试系统对磷的去除效果。本研究证明了A/A/O工艺与臭氧减量和磷回收相结合的运行可行性。
This study investigated the long-term operation performance of an anaerobic/anoxic/oxic (A/A/O) process coupled with sludge ozonation and phosphorus (P) recovery at pilot scale with a treatment capacity of 1.0 m3d−1. Batch experiments of sludge ozonation showed that the release of organic substances (expressed as chemical oxygen demand (COD)), nitrogen (N), and P from disintegrated microbial cells was enhanced with an increasing ozone dose. The optimal ozone dose was about 100 mg g−1MLSS (mixed liquor suspended solids), at which a sludge solubilization efficiency of 35.5% was achieved. The pilot-scale treatment system was continuously operated for 141 days and a maximum sludge reduction efficiency of 85% was reached. Ozonated sludge recycle (OSR) affected slightly the COD and N removal, mixed liquor volatile suspended solids to MLSS ratio, and sludge activity in the bioreactor, and significantly improved the sludge settleability. However, P removal was obviously inhibited because of the reduced discharge of excess sludge. The mass balances of COD and N indicated that OSR improved both organic mineralization and denitrification. The influent P could be recovered by 29% from the supernatant of ozonated sludge, thus notably enhancing its removal in the pilot-scale treatment system. This study demonstrates the operational feasibility of the A/A/O process coupled with excess sludge reduction by ozone and P recovery.
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影响因子：
2.7
作者：
E. Egemen;J. Corpening;J. Padilla;R. Brennan;N. Nirmalakhandan
通讯作者：
E. Egemen;J. Corpening;J. Padilla;R. Brennan;N. Nirmalakhandan
DOI：
--
发表时间：
2014
期刊：
--
影响因子：
--
作者：
L. Wang
通讯作者：
L. Wang
影响因子：
11.4
作者：
Guangming Zhang;Jing Yang;Huanzhi Liu;Jie Zhang
通讯作者：
Guangming Zhang;Jing Yang;Huanzhi Liu;Jie Zhang
影响因子：
12.8
作者：
M. Weemaes;H. Grootaerd;F. Simoens;W. Verstraete
通讯作者：
M. Weemaes;H. Grootaerd;F. Simoens;W. Verstraete
影响因子：
4.1
作者：
Huang, Xia;Liang, Peng;Qian, Yi
通讯作者：
Qian, Yi