ZHUHong-qing,WUBo,YEChang-ming,et al.Upgrading and Reconstruction of Oxidation Ditch Process with High Effluent Standard in a Wastewater Treatment Plant in Shaoguan City[J].China Water & Wastewater,2023,39(10):75-79.
Upgrading and Reconstruction of Oxidation Ditch Process with High Effluent Standard in a Wastewater Treatment Plant in Shaoguan City
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第10期
Page:
75-79
Column:
Date of publication:
2023-05-17
- Abstract:
- The scale of a municipal wastewater treatment plant upgrading project in Shaoguan City is 10.0×104 m3/d, and the effluent standard is upgraded from the second level limit specified in Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002) to the stricter of the first level A limit and the first level limit in the second period specified in the Guangdong Provincial local standard Discharge Limits of Water Pollutants (DB 44/26-2001). To solve the problems of low oxygen utilization rate and large amount of sludge deposition at the bottom of the oxidation ditch due to surface aeration, the oxidation ditch was reconstructed as follows: the microporous aerator was adopted at the bottom of the tank, and the advanced treatment units including biological aeration filter and upflow denitrification filter were added. The actual effluent quality stably reached the class Ⅲ limit specified in Environmental Quality Standards for Surface Water (GB 3838-2002) (except TN).
Last Update:
2023-05-17