MIAOPan.Application of Denitrifying Biofilter and High Efficiency Sedimentation Tank in Upgrading of a WWTP[J].China Water & Wastewater,2022,38(6):113-116.
Application of Denitrifying Biofilter and High Efficiency Sedimentation Tank in Upgrading of a WWTP
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第38卷
Number:
第6期
Page:
113-116
Column:
Date of publication:
2022-03-17
- Keywords:
- WWTP; upgrading; light denitrification biofilter; micro-sand high efficiency sedimentation tank
- Abstract:
- It is very difficult for the effluent of a traditional wastewater treatment plant to reach level quasi-Ⅳ in Environmental Quality Standards for Surface Water (GB 3838-2002), thus it usually needs to be upgraded. The advanced treatment process of a newly built WWTP with a treatment capacity of 40×104 m3 /d, adopts light denitrification biofilter and micro-sand high efficiency sedimentation tank. The effluent quality after treatment is improved from the first level A criteria in the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002) to the level quasi-Ⅳ in GB 3838-2002. The operating cost is 0.355 yuan/m3. For this upgrading project, the investment costs of constructing light denitrification biofilter and micro?sand high efficiency sedimentation tank are 274 yuan/m3 and 143.5 yuan/m3 respectively. The excellent treatment performance has been achieved after operation, which could provide references for other upgrading projects.
Last Update:
2022-03-17