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An activated sludge treatment was evaluated for its effectiveness in cleaning up a petrochemical wastewater in Iran. For assessing biodegradation potential of activated sludge, seven characteristics of wastewater (temperature, pH, dissolved oxygen, chemical oxygen demand, concentrations of ethylene dichloride, vinyl chloride, and total hydrocarbons) were monitored during six months. It was shown that...
Przeprowadzono testy biodegradacji metodą Zahn-Wellens modelowych roztworów kwasów żywicznych, nie ozonowanych i poddanych procesowi ozonowania wstępnego. Przebieg biodegradacji roztworów nieozonowanych i po ozonowaniu był zbliżony, a zmniejszenie wartości wskaźnika ChZT wynosiło odpowiednio do 95 i 93%. Ozonowanie nie poprawiało podatności ścieków modelowych na tlenową biodegradację za pomocą osadu...
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