Open AccessNitrificación En La Estabilización De Residuos Líquidos En Un Reactor Batch Aireado Completamente Mezclado
Author(s) -
Agustín Leiva Pérez,
David Vera,
Joffre A. Andrade Candell,
Q.F. Ana María Aveiga Ortiz,
Julio Abel Loureiro Salabarría
Publication year - 2017
Publication title -
european scientific journal
Language(s) - English
Resource type - Journals
eISSN - 1857-7881
pISSN - 1857-7431
DOI - 10.19044/esj.2017.v13n3p438
Subject(s) - trickling filter , alkalinity , chemistry , nitrification , nitrate , activated sludge , nitrogen , oxidizing agent , ammonia , nuclear chemistry , wastewater , environmental engineering , environmental science , biochemistry , organic chemistry
Organic nitrogen concentration and nitrifying efficiency were related with aerobic reactor operation time, varying from zero up to 50 days and working as a Conventional Activated Sludge System, inoculated with sludge from a trickling filter system, packed with plastic media. The total nitrogen concentration at the beginning was adjusted to 70 mg/dm3 , by means of lysine addition and, and the corresponding to dissolved oxygen stayed at least in 3 mg/dm3 . The maximum nitrification efficiency for converting total nitrogen to nitrate was 86%, and about 30 days, was not significantly increased and the alkalinity (expressed as CaCO3) was reduced from 425 down to 57 mg/dm3 , decreasing about 7,50 mg/dm3 for each mg/dm3 of organic nitrogen converted to nitrate.