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  • Title: Startup of pilot-scale aerobic granular sludge reactor by stored granules.
    Author: Liu QS, Liu Y, Tay ST, Show KY, Ivanov V, Benjamin M, Tay JH.
    Journal: Environ Technol; 2005 Dec; 26(12):1363-9. PubMed ID: 16372571.
    Abstract:
    The startup of a pilot-scale aerobic granular sludge reactor was investigated by seeding with 4-month stored aerobic granules. Two liters of granules were inoculated into the reactor (5.9% of reactor volume), which gave a biomass concentration of 1.03 g l(-1). Experimental results showed that seeding granules could be successfully maintained in the reactor. The microbial activity of seeding granules could be fully recovered to that of fresh granules after 2 days of operation, and new granules started to grow after day 5. Newly developed aerobic granules at stable period had similar size and morphology as seeding granules, and a biomass concentration of 6.0 g l(-1) was achieved in the reactor. The experiment demonstrated for the first time that stored aerobic granules could be used for easy and quick startup of aerobic granular sludge reactor.
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