ZHUZhao-jun,CHENTao,FANAn-yi,et al.An Example of Tannery Wastewater Treatment Upgrading Project[J].China Water & Wastewater,2023,39(10):144-149.
An Example of Tannery Wastewater Treatment Upgrading Project
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第10期
Page:
144-149
Column:
Date of publication:
2023-05-17
- Abstract:
- The design capacity of a tannery wastewater treatment project in Henan Province is 1×104 m3/d, and the combined process of primary sedimentation, physicochemical reaction sedimentation, anaerobic baffled reactor, and oxidation ditch was used. Due to the change of wastewater quality and discharge standard from indirect emissions to direct emissions, the original treatment process needs to be transformed. The pretreatment of Fenton oxidation is added for high phosphorus wastewater, the anoxic/aerobic process and enhanced nitrogen removal are added for wastewater containing sulfur and degreasing, and two-stage Fenton oxidation advanced treatment process are added at the end. The operation results of a year indicate that even if the influent quality fluctuated greatly, the average removal rates of COD, TP, NH3-N and TN by the modified advanced treatment process reached 89.0%, 94.4%, 28.4%, 23.3%, respectively, and the main indicators of effluent could reach the first level A criteria of Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002). The investment of renovation is 57 million yuan, and the comprehensive operating cost is 9.4 yuan/m3.
Last Update:
2023-05-17