SEMUR EN AUXOIS, France: Skid–Elimination of turbidity, organic matter, pesticides, metals, algae, oxidation of manganese and microbiological retention
The plant built in 1980 using a traditional process had to be renovated in 2002.
The Ultrafiltration by membranes combined with the Cristal® process (addition of powdered activated carbon) was chosen for this upgrade. In total, this drinking water production station is equipped with 3 skids 18 module.
The accumulation of loose deposits in a drinking water distribution system (DWDS) is a potential risk for water quality. In this work, hydraulic disturbance was simulated in different areas of a large DWDS. The water quality features before and after the disturbance were compared, and the solid deposits captured from different experimental sites were characterized. The results showed that the hydraulic disturbance increased the water turbidity and color, which can be attributed to the re-suspension of iron and...
The groundwater used as drinking water often contains unacceptable amounts of iron and manganese compounds and ammonium ions. These substances are efficiently removed using conventional technologies (aeration and filtration through granular media filters). However, the efficiency is drastically reduced for water containing considerable amounts of organic matter, which usually enters the water in wellfields linked with surface water. This paper presents a technology development for treating groundwater with such...
Manganese removal is a typical concern in drinking water production. Biofiltration may be used when treating groundwater sources but the onset of manganese removal in virgin biofilters can vary considerably. The aim of this study was to investigate the effect of different filter media on manganese oxidation and bacterial diversity in biofilters during the start-up. The onset of manganese oxidation in four virgin granular filter media (quartz, calcium carbonate, polystyrene, and manganese oxide) and one matured...
Amyl xanthate (AX), a widely used reagent in sulfide mineral flotation, has caused serious environmental problems. Manganese dioxides (MnO2), ubiquitous in natural soils and sediments, are one kind of important oxidant or catalyst in facilitating organic pollutant decomposition. In this study, the oxidative degradation of AX by MnO2 was investigated in batch experiments. It was found that up to 90% AX was decomposed by MnO2 in 30 min and the removal efficiency of AX depended strongly on the loading of MnO2 and pH...
There are a number of ways to remove heavy metals from water. Sorption on granular media based on iron oxides and hydroxides is currently the most used option. The experiment was carried out using sorption materials GEH, CFH 0818, CFH 12 and Bayoxide, which are primarily designed to remove arsenic from water. Four columns were prepared with an inner diameter of 4.4 cm for the purpose of the experiment. The thickness of the filtration media was 62 cm on average. Nickel, iron and manganese pollution were simulated...
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