Abstract：
:Rapid formation of denitrifying sulfide removal granules is of practical interest to start up an expanded granular sludge bed reactor for wastewater treatment. This study demonstrates that methanogenic granules can be easily acclimated into DSR granules in one day, removing all 1.30 kg m(-3) d(-1) sulfide and converting >90% of 0.56 kg-Nm(-3)d(-1) nitrate into di-nitrogen gas. Under high loadings, reactor performance, however, declined. Under high loading rates, sulfide first inhibited the heterotrophic denitrifier (Caldithrix sp.), thereby accumulating nitrite in the system; the autotrophic denitrifier (Pseudomonas sp. C23) was then inhibited by accumulated nitrite, leading to breakdown of the entire DSR process.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Zhou X,Chen C,Wang A,Liu LH,Ho KL,Ren N,Lee DJdoi
10.1016/j.biortech.2011.01.049subject
Has Abstractpub_date
2011-04-01 00:00:00pages
5244-7issue
8eissn
0960-8524issn
1873-2976pii
S0960-8524(11)00118-0journal_volume
102pub_type
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