Tricks and tracks in removal of emerging contaminants from the wastewater through hybrid treatment systems: A review

In recent years, many biological and physicochemical treatment technologies have been investigated for the removal of the emerging contaminants (ECs) from the wastewater matrix. However, due to the deficiency of these treatments to completely degrade the ECs in wastewater, hybrid systems were explor...

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Vydané v:The Science of the total environment Ročník 738; s. 140320
Hlavní autori: Dhangar, Kiran, Kumar, Manish
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: Elsevier B.V 10.10.2020
Predmet:
activated sludge
Advanced oxidation processes
cost effectiveness
drugs
Emerging contaminants
environment
Hybrid systems
Membrane bioreactor
membrane bioreactors
nanocomposites
oxidation
Ozonation
Removal
reverse osmosis
sustainable technology
ultrafiltration
ultrasonics
wastewater
Advanced oxidation processes
Removal
Ozonation
Membrane bioreactor
Hybrid systems
Emerging contaminants
ISSN:0048-9697, 1879-1026, 1879-1026
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Shrnutí:In recent years, many biological and physicochemical treatment technologies have been investigated for the removal of the emerging contaminants (ECs) from the wastewater matrix. However, due to the deficiency of these treatments to completely degrade the ECs in wastewater, hybrid systems were explored using the distinguishing removal potential of the different treatment processes. This review gives an insight on such hybrid systems combining several physical, chemical and biological treatments for the fast and eco-efficient removal of ECs from wastewater. Most of the hybrid systems have applied biological treatments first and then physical or chemical treatments. The hybrid system of membrane bioreactor (MBR) followed by membrane filtrations (RO/NF) effectively removed a suite of ECs such as pharmaceuticals, beta blockers, pesticides and EDCs. Some of the hybrid systems of constructed wetlands and waste stabilization ponds showed promising potential for the biosorptive removal of pharmaceuticals and some beta blockers. The hybrid systems combining activated sludge process and physical processes such as ultrafiltration (UF), reverse osmosis (RO) and gamma radiations are considered as the cost effective technologies and had better removal of trace organic pollutants. The hybrid system of MBR coupled with UV oxidation, activated carbon and ultrasound, and ozonation followed by ultrasounds, completely degraded some ECs and many pharmaceuticals. The review also synthesizes the trend followed by the hybrid system processes for the removal of various categories of ECs. The future research directions for the ECs removal utilizing hybrid nanocomposites and green sustainable technology have been suggested. [Display omitted] •Review summarises the performance of >24 hybrid systems of various combinations.•Hybrid systems are compelling than single treatment for emerging contaminants (ECs).•Advanced oxidation processes is the best treatment to be integrated as hybrid systems.•Ozonation-BAC and MBR-RO/NF are the most effective ECs removal hybrid systems.
Bibliografia:ObjectType-Article-1
SourceType-Scholarly Journals-1
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ObjectType-Review-3
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ISSN:0048-9697
1879-1026
1879-1026
DOI:10.1016/j.scitotenv.2020.140320