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Emission Patterns and Formation Mechanism of PCDDs/PCDFs in Bleaching Wastewater(I) - Alkali Wastewater -
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2001, v.14 no.5, pp.422-431
Shin,
S., &
Jang,
S.
(2001). Emission Patterns and Formation Mechanism of PCDDs/PCDFs in Bleaching Wastewater(I) - Alkali Wastewater -. Analytical Science and Technology, 14(5), 422-431.
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Abstract
One pulp manufacture facility was selected as surveying facility to examine the discharged amount and generation mechanism of dioxins excepts for bleaching stage wastewater. In recovery and finishing process, 2,3,7,8-TCDF, OCDD and OCDF were mainly detected, and the ratio of PCDDs and 1,2,3,4,7,8-HxCDD as the concentration of 2,3,7,8-substitute isomer were discharged which is known as the typical emission pattern of pulp and paper manufacture facility, and the 1,2,3,7,8-PeCDD and 1,2,3,4,7,8-HxCDD were discharged more than 90% in toxic equivalent concentration. Also, the OCDD and 2,3,7,8-TCDF for 2,3,7,8-isomer concentration, and 1,2,3,7,8-PeCDD and 2,3,7,8-TCDF as toxic equivalent concentration were discharged in effluent. The detected PCDDs/PCDFs concentration were surveyed 0.2266 ng-TEQ/L for influent and 0.0377 ng-TEQ/L for effluent.
- keywords
- PCDDs/PCDFs, dioxin formation, pulp and paper
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