Sustainable options of post treatment of UASB effluent treating sewage: A review

► The post treatment systems of UASB effluent treatment treating sewage are discussed. ► The NBMS based treatment concept was suggested for the treatment of the sewage. ► High rate micro-aerobic methods were suggested for the up gradation of UASB based existing sewage treatment plants (STPs) to achi...

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Bibliographic Details
Published in:Resources, conservation and recycling conservation and recycling, 2011-10, Vol.55 (12), p.1232-1251
Main Authors: Khan, Abid Ali, Gaur, Rubia Zahid, Tyagi, V.K., Khursheed, Anwar, Lew, Beni, Mehrotra, Indu, Kazmi, A.A.
Format: Article
Language:English
Subjects:
Anaerobic processes
Anaerobic treatment
Applied sciences
Biological and medical sciences
Biotechnology
Chemical engineering
Conservation
developing countries
economic analysis
Economics
Effluents
environmental protection
Exact sciences and technology
Fundamental and applied biological sciences. Psychology
General purification processes
High rate micro-aerobic treatment systems
inorganic compounds
Methods. Procedures. Technologies
mineralization
NBMS
Nutrients
Others
pathogens
Polishing methods
Pollution
Post settling treatment step
Reactors
recycling
Sewage
sewage treatment
Sewerage works: sewers, sewage treatment plants, outfalls
sustainable technology
UASB post treatment
upflow anaerobic sludge blanket reactor
Various methods and equipments
wastewater
Wastewaters
Water treatment and pollution
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Summary:► The post treatment systems of UASB effluent treatment treating sewage are discussed. ► The NBMS based treatment concept was suggested for the treatment of the sewage. ► High rate micro-aerobic methods were suggested for the up gradation of UASB based existing sewage treatment plants (STPs) to achieve desired effluent quality for disposal or for reuse. ► An economic evaluation of some of the emerging options was described. ► This paper definitely helps the decision or policy makers, engineers and researchers/scientists working in PuSAN sector. The upflow anaerobic sludge blanket (UASB) process is reported to be a sustainable technology for domestic wastewaters treatment in developing countries and for small communities. However, the inability of UASB process to meet the desired disposal standards has given enough impetus for subsequent post treatment. In order to upgrade the UASB based sewage treatment plants (STPs) to achieve desired effluent quality for disposal or for reuse, various technological options are available and broadly differentiated as primary post-treatment for the removal of organic and inorganic compounds and suspended matter; secondary post-treatment for the removal of hardly degradable soluble matter, colloidal and nutrients; and polishing systems for removals of pathogens. Hence, this paper discusses the different systems for the treatment of UASB reactor effluent treating sewage. Additionally, a comparative review, an economic evaluation of some of the emerging options was conducted and based on the extensive review of different integrated combination, i.e. UASB-different aerobic systems, a treatment concept based on natural biological mineralization route recognized as an advanced technology to meet all practical aspects to make it a sustainable for environmental protection, resource preservation and recovering maximum resources.
ISSN:0921-3449
1879-0658
DOI:10.1016/j.resconrec.2011.05.017