The performance evaluation of hybrid anaerobic baffled reactor for treatment of PVA-containing desizing wastewater

Polyvinyl alcohol (PVA)-containing desizing wastewater discharged from final textile wastewater has a great impact on the environment. In the paper, an improved lab-scale hybrid anaerobic baffled reactor (HABR) was developed to treat desizing wastewater. Under optimum condition (alkalinity of influe...

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Bibliographic Details
Published in:Desalination 2011-04, Vol.271 (1-3), p.287-294
Main Authors: Rongrong, Liu, Xujie, Lu, Qing, Tian, Bo, Yang, Jihua, Chen
Format: Article
Language:English
Subjects:
Alkalinity
Anaerobic treatment
Applied sciences
Chemical engineering
desalination
Desizing
Desizing wastewater
environmental impact
Exact sciences and technology
General purification processes
Granular sludge
Hybrid anaerobic baffled reactor
Influents
Microorganisms
Pollution
Polyvinyl alcohol
Polyvinyl alcohols
Reactors
Volatile fatty acid
Waste water
wastewater
wastewater treatment
Wastewaters
Water treatment and pollution
zoning
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Summary:Polyvinyl alcohol (PVA)-containing desizing wastewater discharged from final textile wastewater has a great impact on the environment. In the paper, an improved lab-scale hybrid anaerobic baffled reactor (HABR) was developed to treat desizing wastewater. Under optimum condition (alkalinity of influent 500mg/L, effluent recycle ratio of 94 times influent rate and hydraulic retention time of 5d), the system demonstrated a good performance of COD and PVA removal efficiencies (around 42.0% and 18.0% respectively) and the average concentration of alkalinity in the effluent was around 700mg/L and pH value was above 6.8. Microbial selection and zoning are encouraged inside the HABR. The improved lab-scale HABR proved to be a suitable technology for desizing wastewater treatment. ► HABR was able to treat PVA-containing desizing wastewater. ► pH and alkalinity were important for operation of HABR. ► The flow pattern was between plug flow and ideally mixed flow. ► Methane content in the biogas varied at different HRTs.
ISSN:0011-9164
1873-4464
DOI:10.1016/j.desal.2010.12.044