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Browsing by Subject "purification of sewage"

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    Item type:Thesis, Access status: Restricted ,
    Oczyszczanie ścieków pogalwanicznych na przykładzie Nycz Intertrade Sp. z o.o. w Niepołomicach
    (Data obrony: 2011-12-20) Wróblewska, Joanna
    Wydział Geologii, Geofizyki i Ochrony Środowiska
    Purification of post-galvanic sewage showed of the example of Nycz Intertrade Sp. Z o.o. in Niepołomice. In analysis of effectiveness of neutralization this sewage use the test results made in Nycz Intertrade Sp. Z o.o. and analyses sewage with zinc coating before and after purification. Results of laboratory investigation prove that neutralization this sewage is effectiveness. Ascertain that treated sewage don`t exceed the allowable value of pH, temperature, electrolytic conductance, suspension, ChZT, BZT, sewage sulfates and metals content. Exception of chlorides and sulfates, because contents of this anions was overdraw six times in 2010. Analyses of zinciferous sewage before neutralization prove high content of Zn (42 mg/dm3) and Fe (16,6 mg/dm3). This process cause the reduction of Zn 95,5% and Fe 99%. In this research qualify of amount heavy metals (Zn, Fe, Cd i Pb) in post-galvanic sludge with neutralization zinciferous sewage. Very high contents of Zn (30% s.sm.) to make this sludge to recovery.