Polycyclic aromatic hydrocarbons and polychlorobiphenyls in wastewaters and sewage sludges from the Paris area (France)

Occurrence of organic microcontaminants in the wastewater treatment process. A mini review

“…Persistent organic pollutants (POPs), especially the legacy ones (polychlorinated biphenyls, polychlorinated dibenzo-pdioxins/furans and organochlorine pesticides) have been studied in detail since the early 1980s [65][66][67][68][69][70][71]. It is widely known that legacy POPs in wastewaters originate from a variety of sources and, once in the WWTP, tend to partition mainly on the particulate phase and end up that way in the final sludge.…”

Distribution of polychlorinated biphenyls in an urban riparian zone affected by wastewater treatment plant effluent and the transfer to terrestrial compartment by invertebrates

“…Wastewater derived from households and industrial activities have been shown to be potential sources of PCBs and can contaminate the surrounding environment through the effluents from wastewater treatment plants (WWTPs) (Blanchard et al, 2004;Wang et al, 2007). In recent years, 3,3-dichlorobiphenyl (PCB-11) has gained increasing interest because this congener is normally not found at significant level in common technical PCB mixtures (Frame et al, 1996).…”

The behaviors and fate of polycyclic aromatic hydrocarbons (PAHs) in a coking wastewater treatment plant

“…Although, the removal and fate of PAHs in municipal WWTPs have been extensively studied (Pham and Proulx, 1997;Manoli and Samara, 1999;Vogelsang et al, 2006;Fatone et al, 2011), there are very limited studies reported in the literature about these compounds in coking WWTPs (Miller, 1980;Walters and Luthy, 1984), which is much more complicated than the municipal wastewaters because of coming directly from the production of coke at high temperature, the purification of coal gas and the recovery of chemical products, and containing considerable amounts of phenols, polycyclic nitrogen-containing aromatics, oxygen-and sulfur-containing heterocyclic and acyclic compounds (Zhang et al, 1998;Blanchard et al, 2004). Among these available studies, the focuses were mainly on the occurrence and distribution of these compounds in coking wastewater, not including their behaviors and fate (e.g., the concentrations of PAHs in various phase states at different stages).…”