LI Jie,YUANWei-liang,XUJiao-yang,et al.Engineering Practice of Kitchen Waste Leachate Treatment in a Domestic Waste Transfer Station[J].China Water & Wastewater,2024,40(8):125-129.
Engineering Practice of Kitchen Waste Leachate Treatment in a Domestic Waste Transfer Station
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第40卷
Number:
第8期
Page:
125-129
Column:
Date of publication:
2024-04-17
- Keywords:
- domestic waste transfer station; kitchen waste leachate; anaerobic reactor; MBR process; ozone catalytic oxidation; tubular ultrafiltration membrane
- Abstract:
- Taking the kitchen waste treatment in a domestic waste transfer station in Nanjing as an example, the application of a combined treatment process including pre?treatment, anaerobic, MBR (two-stage A/O and MBR) and ozone catalytic oxidation is introduced. In the pre-treatment stage, a stack dehydrator, an oil trap and an air flotation device are used to remove large amounts of SS and grease in the leachate. The anaerobic process is used to remove organic content in leachate, and then the anaerobic effluent entered MBR to further remove the pollutants such as organic matter, nitrogen and phosphorus. Finally, ozone catalytic oxidation is used as a safeguard measure in the advanced treatment process. In this project, the removal rates of suspended solids, animal and vegetable oil, and TP in pre-treatment stage are 92.4%, 88.1% and 87.9%, respectively. The removal rates of COD, NH3-N and TN in biochemical treatment section are 99.0%, 97.5% and 93.4%, respectively. The effluent quality could meet the standard of level B of Wastewater Quality Standards for Discharge to Municipal Sewers (GB/T 31962-2015)．
Last Update:
2024-04-17