Kwon, JH Park, KY Park, JH Lee, SH Ahn, KH 2024-01-21T06:04:26Z 2024-01-21T06:04:26Z 2021-09-02 2004-12 0273-1223 https://pubs.kist.re.kr/handle/201004/137023 The water treatment sludge including coagulants cannot be easily removed by conventional dewatering methods. The possibility of hydrogen peroxide (H2O2) oxidation as a pretreatment to enhance the dewaterability of polyaluminum chloride (PACl) sludge from water works was investigated. H2O2 treatment alone was not effective but H2O2 treatment under acidic condition significantly reduced both the cake water content and specific resistance to filtration (SRF), indicating the enhancement of dewaterability and filterability. The filterability after acid/H2O2 treatment was comparable to polymer conditioning and even more dewatered cake than polymer conditioning was produced. By H2O2 combined with sulfuric acid (H2SO4), leached iron caused Fenton's reaction, which showed a potential to significantly reduce the amount of solids mass and to produce more compact cake with higher filterability. English IWA PUBLISHING ACTIVATED-SLUDGE BOUND WATER Acidic and hydrogen peroxide treatment of polyaluminum chloride (PACL) sludge from water treatment Article 10.2166/wst.2004.0545 1 WATER SCIENCE AND TECHNOLOGY, v.50, no.9, pp.99 - 105 WATER SCIENCE AND TECHNOLOGY 50 9 99 105 scie scopus 000225794800013 2-s2.0-10244221175 Engineering, Environmental Environmental Sciences Water Resources Engineering Environmental Sciences & Ecology Water Resources Review ACTIVATED-SLUDGE BOUND WATER acid treatment dewatering Fenton reaction H2O2 PACI sludge