Inferior heavy oil refining wastewater has the characteristics of high content of refractory organics,poor biodegradability and great difficulty in treatment.There is a risk that the COD of the effluent from the existing wastewater treatment process cannot meet the Emission Standard of Pollutants for Petroleum Refining Industry(GB 31570-2015)in an inferior heavy oil refining enterprise.As to this problem,scheme of effluent COD meeting emission standard based on powdered activated carbon(PAC)adsorption treatment process was studied.The results of the lab-scale-test show that adding 1.25 g/L of 100 mesh powdered activated carbon into the effluent of the system can reduce the COD to a lower level of 29 mg/L in a short time.In addition,the experimental analysis shows that the COD saturated adsorption capacity of powdered activated carbon is about 0.13 g/g.The above research results can provide reference for the up-to-standard treatment of inferior heavy oil refining wastewater.
关键词
炼化污水/粉末活性炭/劣质重油/COD/达标处理
Key words
refining wastewater/powdered activated carbon/inferior heavy oil/COD/up-to-standard treatment
维普
万方数据