Wastewater treatment plant sludge from

Concentrations of butyltin compounds in sewage sludge from wastewater treatment plants have also been measured in the environment. Values reported are up to 0.77 and 2.22 mg/kg dry weight, respectively, for mono-and dibutyltins (Summer et al., 2003). 

Gago-Ferrero P, Diaz-Cruz MS, Barcelo D (2011) Occurrence of multiclass UV filters in treated sewage sludge from wastewater treatment plants. Chemosphere 84(8) 1158-1165... 

Aparicio, I., J.L. Santos, and E. Alonso. 2007. Simultaneous sonication-assisted extraction, and determination by gas chromatography-mass spectrometry, of di-(2-ethylhexyl)phthalate, nonylphenol, nonylphenol ethoxylates and polychlorinated biphenyls in sludge from wastewater treatment plants. Anal. Chim. Acta 584 455 -61. 

Perez, S., Guillamdn, M., and Barcelo, D., Quantitative analysis of polycyclic aromatic hydrocarbons in sewage sludge from wastewater treatment plants, J. Chromatogr. A, 938, 57-65, 2001. 

During the anaerobic stabilization of sludges from wastewater treatment plants, the buffer value of undissolved carbonates is particularly important. 

Fig. 3.39. Schematic illustration of the effect of pollutants on water quality in a re cipient. 1 — pollutants from the atmosphere, 2 — municipal wastewaters, 3 — sewers, 4 — industrial wastewaters, 5 — surface run-off, 6 — sul>surface run-off, 7 — contribution from non-inhibited areas, 8 — waste depots 8a — municipal, 8b — communal, 8c — sludge from wastewater treatment plants, 9 — agriculture and forestry 9a — animal production and natural fertilizers, 9b — industrial fertilizers and pesticides... 

Treatment and disposal of sludge from wastewater treatment plants have been estimated to account for about half of the... 

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