An integrated chemical wastewater treatment plant in Shandong Province with the capacity of 10,000 m3/d was originally designed to meet the Class 1A standard of Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant(GB18918-2002)while the chemical wastewater being treated by"Fenton+hydrolysis acidification+MP-MBR"processes.It is required to upgrade to comply with more stringent Environmental Quality Standards for Surface Water(GB3838-2002)Grade quasi-Ⅳ water quality standards and expand capacity to 2×104 m3/d.In view of the characteristics of chemical wastewater such as complex composition,high strength pollutants,toxic and harmful ingredients,refractory non-biodegradable substances,much high color and high excessive alkalinity,the combined processes of"pre-Fenton+hydrolytic acidification+two-stage A/O+membrane Fenton+activated carbon"is adopted.The operation results shows that the membrane Fenton process played a pivot role to achieve reliable and stable performance.The final effluent COD,NH4+-N,TN,TP could reduce to 19.05,0.45,5.24,0.13 mg/L respectively.Which could consistently meet the Environmental Quality Standards for Surface Water Standard quasi-Class IV.The operating cost is about 8.64 yuan/m3.
关键词
提标扩建工程/膜芬顿/活性炭/化工废水/深度处理
Key words
upgrading and expansion project/membrane Fenton/activated carbon/chemical wastewater/advanced treatment
维普
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