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61.
电化学法处理活性艳蓝X-BR模拟染料废水的研究 总被引:2,自引:0,他引:2
采用换向电源、铁铝作为两极的新型电化学反应器,以色度和CODCr去除率作为指标,通过调控溶液的性质考察了不同体系对其降解效果的影响。研究表明,该方法对活性艳蓝X-BR模拟染料废水具有较好的处理效果,其最佳处理条件为:电解时间20 min,电解电压10 V,搅拌速度1000 r/min,电源换向周期8 s,废水CODCr初始浓度1232 mg/L,电解质(Na2SO4)浓度0.06 mol/L,极板间距1.0 cm,pH=8。在此条件下,色度去除率可达98.93%,CODCr去除率可达85.26%,处理废水的电耗为1.24 kW.h/m3。 相似文献
62.
63.
Removal of PFOS, PFOA and other perfluoroalkyl acids at water reclamation plants in South East Queensland Australia 总被引:3,自引:0,他引:3
Thompson J Eaglesham G Reungoat J Poussade Y Bartkow M Lawrence M Mueller JF 《Chemosphere》2011,82(1):9-17
This paper examines the fate of perfluorinated sulfonates (PFSAs) and carboxylic acids (PFCAs) in two water reclamation plants in Australia. Both facilities take treated water directly from WWTPs and treat it further to produce high quality recycled water. The first plant utilizes adsorption and filtration methods alongside ozonation, whilst the second uses membrane processes and advanced oxidation to produce purified recycled water. At both facilities perfluorooctane sulfonate (PFOS), perfluorohexane sulfonate (PFHxS), perfluorohexanoic acid (PFHxA) and perfluorooctanoic acid (PFOA) were the most frequently detected PFCs. Concentrations of PFOS and PFOA in influent (WWTP effluent) ranged up to 3.7 and 16 ng L−1 respectively, and were reduced to 0.7 and 12 ng L−1 in the finished water of the ozonation plant. Throughout this facility, concentrations of most of the detected perfluoroalkyl compounds (PFCs) remained relatively unchanged with each successive treatment step. PFOS was an exception to this, with some removal following coagulation and dissolved air flotation/sand filtration (DAFF). At the second plant, influent concentrations of PFOS and PFOA ranged up to 39 and 29 ng L−1. All PFCs present were removed from the finished water by reverse osmosis (RO) to concentrations below detection and reporting limits (0.4-1.5 ng L−1). At both plants the observed concentrations were in the low parts per trillion range, well below provisional health based drinking water guidelines suggested for PFOS and PFOA. 相似文献
64.
Wenjuan Zhang Bo Han Ramato Ashu Tufa Chuyang Tang Xunuo Liu Ge Zhang Jing Chang Rui Zhang Rong Mu Caihong Liu Dan Song Junjing Li Jun Ma Yufeng Zhang 《Frontiers of Environmental Science & Engineering》2022,16(4):46