Polycyclic aromatic hydrocarbons in effluents from wastewater treatment plants and receiving streams in Tianjin, China

2010 ◽  
Vol 177 (1-4) ◽  
pp. 467-480 ◽  
Author(s):  
Weixiao Qi ◽  
Huijuan Liu ◽  
Jiuhui Qu ◽  
Chengzhi Hu ◽  
Huachun Lan ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Wastewater Treatment Plants ◽  
Polycyclic Aromatic

scholarly journals Occurrence, Removal, and Mass Balance of Polycyclic Aromatic Hydrocarbons and Their Derivatives in Wastewater Treatment Plants in Northeast China

Toxics ◽  
2021 ◽  
Vol 9 (4) ◽  
pp. 76
Author(s):  
Rashid Mohammed ◽  
Zi-Feng Zhang ◽  
Chao Jiang ◽  
Ying-Hua Hu ◽  
Li-Yan Liu ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Wastewater Treatment Plants ◽  
Principal Component ◽  
Diagnostic Ratios ◽  
Regression Methods ◽  
Polycyclic Aromatic ◽  
Meta Regression ◽  
Coal Composition

Polycyclic aromatic hydrocarbons (PAHs), 33 methylated PAHs (Me-PAHs), and 14 nitrated PAHs (NPAHs) were measured in wastewater treatment plants (WWTPs) to study the removal efficiency of these compounds through the WWTPs, as well as their source appointment and potential risk in the effluent. The concentrations of ∑PAHs, ∑Me-PAHs, and ∑NPAHs were 2.01–8.91, 23.0–102, and 6.21–171 µg/L in the influent, and 0.17–1.37, 0.06–0.41 and 0.01–2.41 µg/L in the effluent, respectively. Simple Treat 4.0 and meta-regression methods were applied to calculate the removal efficiencies (REs) for the 63 PAHs and their derivatives in 10 WWTPs and the results were compared with the monitoring data. Overall, the ranges of REs were 55.3–95.4% predicated by the Simple Treat and 47.5–97.7% by the meta-regression. The results by diagnostic ratios and principal component analysis PCA showed that “mixed source” biomass, coal composition, and petroleum could be recognized to either petrogenic or pyrogenic sources. The risk assessment of the effluent was also evaluated, indicating that seven carcinogenic PAHs, Benzo[a]pyrene, Dibenz[a,h]anthracene, and Benzo(a)anthracene were major contributors to the toxics equivalency concentrations (TEQs) in the effluent of WWTPs, to which attention should be paid.

Wastewater dissolved organic matter: characteristics and sorptive capabilities

2006 ◽  
Vol 53 (7) ◽  
pp. 51-57 ◽  
Author(s):  
B. Chefetz ◽  
T. Ilani ◽  
E. Schulz ◽  
J. Chorover
Keyword(s):  
Organic Matter ◽  
Wastewater Treatment ◽  
Polycyclic Aromatic Hydrocarbons ◽  
Dissolved Organic Matter ◽  
Aromatic Hydrocarbons ◽  
Wastewater Treatment Plants ◽  
Relative Content ◽  
Triazine Herbicides ◽  
Hydrophobic Organic Compounds ◽  
Polycyclic Aromatic

An evaluation of the mobility of organic pollutants with wastewater dissolved organic matter (DOM) is essential to better understanding their fate and toxicity to the environment. In this study, DOM from two wastewater treatment plants (in Lachish and Netanya, Israel) were fractionated to hydrophobic-acid (HoA) and hydrophobic-neutral (HoN) fractions. The fractions were characterised and their sorptive capabilities for s-triazine herbicides and polycyclic aromatic hydrocarbons (PAHs) were studied. For all sorbates, binding to the HoN fractions was much higher than to HoA fractions. The high binding coefficients obtained for the studied triazines by the HoN fractions suggested that their sorption is governed by hydrophobic-like interactions rather than H-bonding. The binding coefficients of PAHs measured for the HoN fractions were within the range reported for humic acids and much higher than for the HoA fraction, suggesting that the HoN fraction plays an important role in the overall sorption of these compounds by DOM. Higher sorption coefficients were measured for the Netanya DOM sample containing a higher level of hydrophobic fractions (HoA + HoN) than the Lachish DOM, suggesting that the sorption of hydrophobic organic compounds by DOM is governed by the relative content of these structural substances.

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