Short-term temperature impact on simultaneous biological nitrogen-sulphur treatment in EGSB reactor

Sulphides are present in many wastewater streams; their removal is important due to corrosiveness, toxicity and unpleasant odour, and can be carried out by anaerobic biological treatment. This study focuses on the temperature effect (25-10 °C) on an expanded granular sludge bed (EGSB) reactor for su...

Full description

Saved in:
Bibliographic Details
Published in:Water science and technology 2016-10, Vol.74 (7), p.1610-1618
Main Authors: Sposob, Michal, Dinamarca, Carlos, Bakke, Rune
Format: Article
Language:English
Subjects:
Anaerobic treatment
Bacteria
Biological effects
Biological treatment
Bioreactors
Electron microscopy
Nitrates
Nitrogen
Nitrogen - chemistry
Odor
Odour
Potash
Potassium
Prokaryotes
Reactors
Removal
Scanning electron microscopy
Sewage - chemistry
Sludge
Sludge bed
Spectrophotometry
Struvite
Studies
Sulfides
Sulfur
Sulfur - chemistry
Sulphides
Sulphur
Temperature
Temperature effects
Time Factors
Toxicity
Waste Disposal, Fluid - methods
Wastewater
Wastewater treatment
Water Pollutants, Chemical - chemistry
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Sulphides are present in many wastewater streams; their removal is important due to corrosiveness, toxicity and unpleasant odour, and can be carried out by anaerobic biological treatment. This study focuses on the temperature effect (25-10 °C) on an expanded granular sludge bed (EGSB) reactor for sulphide removal using nitrate as electron acceptor. The reactor was run at a NO /HS molar ratio of 0.35 and pH of 8.5-9.0. Samples were analysed by ion chromatography (NO , SO and S O ), spectrophotometry (S ) and by scanning electron microscopy (SEM). S and NO removal was 99.74 ± 0.04 and 99.5 ± 2.9%, respectively. Sulphur (S ) was found on the outer granule surface and struvite inside the granule, by SEM. Sulphide conversion to sulphur was up to 76%. Temperature transitions and levels influenced S O and SO concentrations.
ISSN:0273-1223
1996-9732
DOI:10.2166/wst.2016.359