HUANGLe,ZHULe-hui,HUANGDong-gen.Case of a Rosin Processing Wastewater Treatment Project[J].China Water & Wastewater,2023,39(6):93-97.
Case of a Rosin Processing Wastewater Treatment Project
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第6期
Page:
93-97
Column:
Date of publication:
2023-03-17
- Keywords:
- rosin processing wastewater; coagulation flotation; Fenton oxidation; UASB; biological contact oxidation
- Abstract:
- In view of the complex composition and characteristics of high color and poor biodegradability of wastewater from a rosin processing plant, which contains a lot of pollutants such as emulsified rosin, resin acids, animal and vegetable oils, tannins, the pretreatment process including oil separation, coagulation flotation, and Fenton oxidation is adopted to remove a large amount of emulsified rosin, animal and vegetable oil pollutants in wastewater, and reduce chromaticity, improve wastewater biodegradability, and then the combined process of UASB and biological contact oxidation are used to degrade organic pollutants in wastewater. The results of engineering commissioning operation show that the average COD, BOD5, animal and vegetable oil, suspended solids, and chromaticity, removal rates of the combined process are 98.8%, 98.6%, 99.1%, 97.0%, and 99.3% respectively. The final effluent COD, BOD5, animal and vegetable oil, suspended solids, chromaticity are no more than 100 mg/L, 20 mg/L, 10 mg/L, 70 mg/L, and 50 times, meeting the first-level criteria of Integrated Wastewater Discharge Standard (GB 8978-1996).
Last Update:
2023-03-17