Abstract:
:This paper presents a comparison between two different materials used as carriers: inert polyurethane (PU) foam and biodegradable polymer polycaprolactone (PCL) particles for the removal of organics and nitrogen from wastewater with a low C/N ratio using moving bed biofilm reactors. The results, during a monitoring period of four months, showed that TOC and ammonium removal efficiency was higher in reactor 2 filled with PU carriers than in reactor 1 filled with PCL carriers (90% and 65% in the former, compared with 72% and 56% in the latter at an hydraulic retention time of 14 h). Reactor 1 showed good behavior in terms of total nitrogen removal as the biodegradable polymer was an effective substrate providing reducing power for denitrification. From three-dimensional excitation-emission matrix analysis, it was shown that the effluent from reactor 1 contained mainly protein-like and soluble microbial product-like substances.
journal_name
Chemospherejournal_title
Chemosphereauthors
Chu L,Wang Jdoi
10.1016/j.chemosphere.2010.12.077subject
Has Abstractpub_date
2011-03-01 00:00:00pages
63-8issue
1eissn
0045-6535issn
1879-1298pii
S0045-6535(10)01497-9journal_volume
83pub_type
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