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Use of nanofiltration to remove zinc from wastewater
Authors: Kočanová Veronika | Cuhorka Jiří | Dušek Libor | Mikulášek Petr
Year: 2015
Type of publication: ostatní - článek ve sborníku
Name of source: Membranes and Membrane Processes
Publisher name: Česká membránová platforma (CZEMP)
Place: Česká Lípa
Page from-to: 31
Titles:
Language Name Abstract Keywords
cze Aplikace nanofiltrace pro odstranění zinku z odpadních vod Práce popisuje testování modelových a reálných vod obsahujících Zn 2+ ionty, které byly separováno pomocí nanofiltrace. Nanofiltrační jednotka byla testována na odstranění síranu zinečnatého z vodných roztoků. Byla použita komerčně dostupná tubulární membrána AFC 40. Experimenty byly provedeny při koncentraci zinku 25; 50; 100; 150 mg∙l-1 a tlaku 5; 10; 15; 20; 25; 30 bar. Rovněž byla testována účinnost separace v rozmezí pH 3-7 a v závislosti na intenzitě toku. Také byly měřeny reálné vzorky odpadních vod obsahující zinek. nanofiltrace; odstranění zinku z odpadních vod
eng Use of nanofiltration to remove zinc from wastewater Contamination of heavy metal represents a high risk to the environment and human health and therefore ranks among the global problems. The source of heavy metals are industrial plants. Global industrial development contributes to their release into the environmental components primarily watercourses. Most wastewater pollution is caused by metals such as commonly lead (Pb), copper (Cu), cadmium (Cd) and zinc (Zn). The main sources of heavy metals are tanning, petroleum refining, chemical manufacturing, electroplating, mining, textile industry, fertilizer plants, photographic process industry, battery manufacturing, metal and steel working and finishing, and landfill leachates2. Other sources of heavy metals could be vehicular traffic, burning of fossil fuels, energy facilities, construction and demolition activity. In wastewater treatment it could be used as processes of precipitation, electrolytic processes, adsorption and membrane separation processes. Nanofiltration unit was tested for removal of zinc sulphate from aqueous solutions. Commercially available tubular membrane AFC 40 was used. Experiments were run at concentration of zinc 25; 50; 100; 150 mg∙l-1 and at a pressure 5; 10; 15; 20; 25; 30 bar. It was tested different pH range 3 – 7 and dependence of flow. Real samples of waste water containing zinc were measured too. nanofiltration; remove of zinc from wastewater

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