LIUQi-guo,GAIHong-tao,CHANGPeng-fei,et al.Treatment of Petrochemical Wastewater by Combined Process of Hydrolysis Acidification, IFAS, Catalytic Ozonation and Activated Coke Adsorption[J].China Water & Wastewater,2025,41(24):125-129.
Treatment of Petrochemical Wastewater by Combined Process of Hydrolysis Acidification, IFAS, Catalytic Ozonation and Activated Coke Adsorption
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第41卷
Number:
第24期
Page:
125-129
Column:
Date of publication:
2025-12-17
- Keywords:
- petrochemical wastewater; IFAS process; magnetic coagulation sedimentation; catalytic ozonation; activated coke adsorption
- Abstract:
- Petrochemical wastewater has complex composition, contains a large amount of refractory and toxic organics, and fluctuates greatly both in quality and quantity. The first?stage capacity of the expansion of a petrochemical wastewater treatment plant in Dongying Port is 2.5×104 m3/d. Hydrolysis acidification is used to improve the biodegradability of the wastewater, and simultaneously regulates the quantity and quality of raw water. IFAS process is used to effectively remove COD, nitrogen and phosphorus. The advanced treatment process adopts magnetic coagulation sedimentation, catalytic ozonation and activated coke adsorption to further remove SS, TP, refractory organics, and chromaticity. The actual operation results show that the effluent COD, NH3-N, and TP can meet the level Ⅳ criteria specified in Environmental Quality Standards for Surface Water (GB 3838-2002), the effluent TN can be less than 12 mg/L, and the other indicators can meet the first level A criteria specified in the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002).
Last Update:
2025-12-17