JIALi,FUYan-fang,GONGShu-fen.Analysis on First Level A Criteria Upgrading Process and Operation of Wastewater Treatment in a Chemical Industrial Park[J].China Water & Wastewater,2022,38(20):124-130.
Analysis on First Level A Criteria Upgrading Process and Operation of Wastewater Treatment in a Chemical Industrial Park
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第38卷
Number:
第20期
Page:
124-130
Column:
Date of publication:
2022-10-17
- Keywords:
- chemical industrial park; upgrading and reconstruction; advanced treatment; ozone oxidation
- Abstract:
- In a chemical industrial park in Anhui Province, the closed pressurized pipe of “one plant and one pipe” was adopted to collect wastewater. The process of pretreatment, biochemical treatment, and advanced treatment was adopted to treat wastewater in the park. Primary precipitation, air floatation, and oxidation process were used for pretreatment. Hydrolysis and A/O were used for biochemical treatment. Filtration, ozone oxidation, BAF, and activated carbon adsorption were used for advanced treatment. After modification, DO, MLSS and SV30 can be stabilized at a lower level, the effluent COD concentration was less than 35 mg/L with an average of 31.5 mg/L, and NH3-N concentration was less than 4.20 mg/L with an average of 2.78 mg/L, which meet the first level A criteria of Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002).
Last Update:
2022-10-17