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The strong electron-accepting ability of transition metal ions enables them to catalyze the oxidation of S(IV) to S(VI) in solution. This reaction has been applied in many fields, such as flue gas desulfurization, hydrometallurgy, atmospheric chemistry, and chemical engineering. To understand the characteristics of the catalysis, this paper reviews the status of research on this reaction in the different...
To cope with the deterioration of the atmospheric environment and to examine flue gas desulfurization for recyclable resources, a flue gas desulfurization technology using scrap iron was developed, which achieved better desulfurization performance in a small-scale experimental study. In addition, economically valuable by-products can be produced from the proposed flue gas desulfurization. Based on...
Fish consumption can incur the methyl mercury associated risk to cognitive development and docosahexaenoic acid associated benefit to cognitive development. The positive impact of fish consumption, aggregately with its adverse impact, on IQ points was analyzed when women of child-bearing age following the advisory on fish consumption to reduce MeHg risk. The decrement of fish consumption can bring...
A novel airlift combined biofilm reactor (ACBR) was developed and the influence of influent organic loading rate on the removal performance and microbial structure was studied. The experimental results indicated 80% nitrogen removal was achieved in the ACBR reactor under the influent organic loading of 0.28-0.53 kgCOD/(m3.d), when the organic loading was further increased, nitrification turned to...
A Computer-aided design (CAD) System for cyclic activated sludge system (CASS) was developed, which combined a new wastewater treatment technology with computer technology. It has important practical significance to enhance design quality, shorten the design cycle, and reduce the intensity of the work. With analyses of the process design of CASS, the algorithm analysis for the CAD system of CASS was...
A novel airlift combined biofilm reactor (ACBR) used for wastewater nitrogen removal was developed and the influence of influent C/N ratio and aeration rate on nitrification and denitrification was studied. The experimental results indicated that nitrifying efficiency declined with the increased influent C/N ratio. Increasing the aeration rate could improve the DO concentration in the aerobic zone...
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