DAIYang-ye,ZHANGDa-peng,WULin-fang,et al.Reconstruction Practice of Oxidation Ditch in a WWTP Upgrading Project[J].China Water & Wastewater,2022,38(24):92-96.
Reconstruction Practice of Oxidation Ditch in a WWTP Upgrading Project
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第38卷
Number:
第24期
Page:
92-96
Column:
Date of publication:
2022-12-17
- Keywords:
- wastewater treatment plant; oxidation ditch; upgrading and reconstruction; denitrification
- Abstract:
- The treatment capability of Carrousel oxidation ditch process in a wastewater treatment plant (WWTP) is 5×104 m3/d. Since the corridor is long and there are no independent anoxic zones, the damage rate of the equipment is relatively high, and the effluent total nitrogen could not meet the standard for a long time. It is determined to upgrade and reconstruct the process on the basis of the maximum reservation and utilization of the existing structures, so as to meet the first level A criteria specified in Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002). Through the transformation of equipment and structures, the functional area of oxidation ditch was transformed into the AAO oxidation ditch process. After the transformation, not only has the oxidation ditch good operation effect and convenient management, but also the power consumption decreased by about 34.1%, which saves about 900 thousand yuan per year.
Last Update:
2022-12-17