- 期刊
COMBINED TREATMENT OF PYROGENIC WASTEWATER FROM OIL SHALE RETORTING
摘要
A combined technological scheme for purification of undiluted high-strength wastewater produced in the shale oil industry was proposed. The initial values of chemical oxygen demand (COD), biological oxygen demand (BOD_7) and phenols in the studied pyrogenic wastewater samples were up to 45, 35 and 1 g/L, respectively. Furthermore, the wastewater had a high toxicity to indicator organism Daphnia Magna (EC_(50) = 0.34%) and caused inhibition of oxygen uptake rate (IC_(50) = 3.4%) and nitrification rate (IC_(50) = 0.7%) in activated sludge treatment. The combination of air stripping, coagulation-flocculation, batch distillation, activated sludge and the Fenton oxidation processes reduced all measured parameters more than 95%. Consequently, a treatment scheme applicable to pyrogenic wastewater was developed.
延伸閱讀
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