Long-term performance evaluation of down-flow hanging sponge reactor regarding nitrification in a full-scale experiment in India.
Bioresour Technol
; 204: 177-184, 2016 Mar.
Article
in En
| MEDLINE
| ID: mdl-26774194
ABSTRACT
The first full-scale down-flow hanging sponge (DHS) reactor applied to post-treatment of effluent from an upflow anaerobic sludge blanket (UASB) reactor for the treatment of municipal sewage was evaluated, with emphasis on nitrification. The full-scale DHS reactor was successfully operated at a hydraulic retention time of 1.5h for over 1800 days in India. The DHS reactor produced effluent with 6 mg L(-1) ammonium nitrogen, corresponding to 79% removal efficiency. The total nitrogen removal by the DHS reactor was 65%. The high process performance of the DHS reactor was supported by its distinctive characteristics of (1) high dissolved oxygen of 5.4 mg L(-1) in the DHS effluent without forced ventilation, (2) dense retained sludge in the range of 23-46 gVSS Lsponge(-1), and (3) adequate sludge activity of 52 mgN gVSS(-1) day(-1) for nitrification. The full-scale experiment has proven that the DHS reactor has practical applicability to developing countries.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Waste Management
/
Bioreactors
/
Nitrification
Type of study:
Evaluation_studies
Country/Region as subject:
Asia
Language:
En
Journal:
Bioresour Technol
Journal subject:
ENGENHARIA BIOMEDICA
Year:
2016
Document type:
Article
Affiliation country:
Japón