Effect of biological wastewater treatment on the molecular weight distribution of soluble organic compounds and on the reduction of BOD, COD and P in pulp and paper mill effluent

Water Research
Tiina LeiviskäJaakko Pellinen

Abstract

Pulp and paper mill wastewater was characterizated, before (influent) and after (effluent) biological wastewater treatment based on an activated sludge process, by microfiltration (8, 3, 0.45 and 0.22microm) and ultrafiltration (100, 50, 30 and 3kDa) of the wastewater samples into different size fractions. Various parameters were measured on each fraction: molecular weight distribution (MWD) using high performance size exclusion chromatography (HPSEC), total organic carbon (TOC), biochemical oxygen demand (BOD), chemical oxygen demand (COD), total phosphorus (Tot-P), phosphate phosphorus (PO(4)-P), electrical conductivity, pH, turbidity, charge quantity and zeta potential. The MWD, TOC and COD(Cr) results indicated that the majority of the material present in both the influent and effluent was in the medium molecular weight (MW) range (i.e. MW<10kDa) with three main MW sub-fractions. There were no significant differences in the range of the MWD between the influent and effluent samples. The magnitude of the MWD in the effluent was about one half that in the influent, the greatest reduction being in the 6kDa fraction. The 3kDa fractions of both the influent and effluent showed a considerable increase in BOD(7), probably due to t...Continue Reading

Citations

Jan 10, 2012·Environmental Science and Pollution Research International·John A van LeeuwenMadhawa Rupasinghe
May 16, 2012·Environmental Science and Pollution Research International·Serdar DoğruelDerin Orhon
Sep 12, 2015·Environmental Science and Pollution Research International·Bholu Ram Yadav, Anurag Garg
May 29, 2016·Environmental Science and Pollution Research International·Marília Cleto Meirelles RibeiroCamila Costa de Amorim
Nov 1, 2017·Biotechnology Progress·Xiaoqian ChenPedram Fatehi
Oct 9, 2020·Water Science and Technology : a Journal of the International Association on Water Pollution Research·B Hande Gursoy-Haksevenler, Idil Arslan-Alaton
Dec 31, 2020·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Natália Rodrigues GuimarãesSidney Seckler Ferreira Filho

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