Abstract：
:Sodium acetate as carbon source, tolerance to organic loading rate (OLR) by aerobic granular sludge in a cyclic aerobic granular reactor (CAGR) was investigated by gradually increasing the influent COD. AGS could maintain stability in the continuous flow reactor under OLR⩽15kg/m(3)d in the former 65 days, and SVI, granulation rate, average particle size and water content was 21 ml/g, 98%, 1.8mm and 97.2% on the 65th day. However, AGS gradually disintegrated after the 66 th day when OLR increased to 18 kg/m(3)d, and granules' properties deteriorated rapidly in a short time. High removal rates to pollutants were achieved by CAGR in the former 65 days, but the removal rates of pollutants dropped sharply from the 66 th day. With the increase of OLR and particle size, anaerobic cores inside the granules were formed by massive dead cells, while instability of anaerobic core eventually led to the collapse of the system.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Long B,Yang CZ,Pu WH,Yang JK,Liu FB,Zhang L,Zhang J,Cheng Kdoi
10.1016/j.biortech.2015.02.029subject
Has Abstractpub_date
2015-04-01 00:00:00pages
314-322eissn
0960-8524issn
1873-2976pii
S0960-8524(15)00198-4journal_volume
182pub_type
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