XIA Wen-jing.Example of a Wastewater Treatment Reconstruction Project in a Large Airport[J].China Water & Wastewater,2021,37(4 4):110-116.
Example of a Wastewater Treatment Reconstruction Project in a Large Airport
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第37卷
Number:
4 4
Page:
110-116
Column:
Date of publication:
2021-02-17
- Abstract:
- The original biological treatment process of a wastewater treatment plant with design capacity of 28 000 m3/d in an airport, was anaerobic and jet aeration oxidation ditch．It is required for the effluent quality of the reconstruction project to meet the stricter value of the first level A criteria in Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant(GB 18918-2002) and the first level criteria in the second period in Discharge Limits of Water Pollutants of local standards of Guangdong Province (DB 44/26-2001). Fully based on the existing pretreatment and advanced treatment facilities, the biochemical treatment was renovated into anaerobic and improved microporous aeration Carrousel oxidation ditch, and the dosing system of PAC was optimized. Although the influent concentrations were higher than the design value, the operation results showed that the treatment effect of various pollutants was very good after reconstruction. The removal rates of COD, BOD5, TN, NH3-N, TP and SS were 97.43%, 97.83%, 82.39%, 98.27%, 95.48% and 97.15% respectively. The nitrogen and phosphorus removal effects were improved obviously, and the effluent quality can meet the discharge requirements stably.
Last Update:
2021-02-17