Contact Stabilization with Enhanced Accumulation Process for Energy Recovery from Sewage
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22320%2F16%3A43902958" target="_blank" >RIV/60461373:22320/16:43902958 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1089/ees.2016.0155" target="_blank" >http://dx.doi.org/10.1089/ees.2016.0155</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1089/ees.2016.0155" target="_blank" >10.1089/ees.2016.0155</a>
Alternative languages
Result language
angličtina
Original language name
Contact Stabilization with Enhanced Accumulation Process for Energy Recovery from Sewage
Original language description
Conventional activated sludge (CAS) system is currently the predominant technology in wastewater treatment, but its painfully energy-intensive aerobic pathway has led researchers to investigate alternative technologies. These technologies are often focused on recovery of chemical energy from sewage. In this article, we introduce the CoSEA (Contact Stabilization with Enhanced Accumulation) process, a novel upconcentration method that separates the most valuable sewage content through a modified bioflocculation-adsorption-sedimentation-stabilization process for further anaerobic treatment. Raw sewage was treated in a 1 L psychrophilic (15 degrees C) sequencing batch reactor (SBR). By using an SBR, a time-concentration gradient was applied to enhance accumulation abilities of the sludge. The reactor was operated at very low sludge age (<1 day) and with a short (1.5 h) aeration phase. We tested two initial conditions: (1) operation with inoculation by activated sludge and (2) without any inoculation. Average chemical oxygen demand removal with and without inoculation was as high as 80% and 70%, respectively. Up to 55% of incoming chemical energy was recovered as gaseous methane. This recovery was significantly higher than can be typically achieved by CAS even with optimized anaerobic stabilization. Although CoSEA effluent requires subsequent removal of nutrients (N, P), the process is a promising new approach for energy recovery in a main wastewater treatment line. The process is especially suitable for moderate climates, where direct anaerobic digestion is so far not suitable for sewage treatment.
Czech name
—
Czech description
—
Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
EI - Biotechnology and bionics
OECD FORD branch
—
Result continuities
Project
—
Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Environmental Engineering Science
ISSN
1092-8758
e-ISSN
—
Volume of the periodical
33
Issue of the periodical within the volume
11
Country of publishing house
US - UNITED STATES
Number of pages
9
Pages from-to
873-881
UT code for WoS article
000386943600005
EID of the result in the Scopus database
2-s2.0-84994745372