XU Xiao-ming,LIU Yu xin,YAN Ping,et al.A Design Case of Upgrading and Expansion Project to Meet the Quasi-Ⅳ Class Standard in a WWTP with Industrial Wastewater as Its Major Influent[J].China Water & Wastewater,2020,36(18 18):60-65.
A Design Case of Upgrading and Expansion Project to Meet the Quasi-Ⅳ Class Standard in a WWTP with Industrial Wastewater as Its Major Influent
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第36卷
Number:
18 18
Page:
60-65
Column:
Date of publication:
2020-09-17
- Keywords:
- printing and dyeing wastewater; upgrading and reconstruction project; two-stage A/O process; Fenton; advanced treatment
- Abstract:
- The total scale of upgrading and expansion project in a wastewater plant in Zhejiang is 4×104 m3/d, including upgrading project of 2×104 m3/d and expansion project of 2×104 m3/d. The wastewater treatment plant originally adopted anaerobic hydrolysis+MSBR+flocculation sedimentation tank+V-type filter treatment process, the effluent carries out the first class A discharge standard. The upgrading and expansion project requires the effluent quality to meet the existing wastewater treatment plant standard in Zhejiang Province local standard Discharge Standard of Major Water Pollutants for Municipal Wastewater Treatment Plant (DB 33/2169-2018). According to the characteristics of 60% industrial wastewater in influent, large fluctuation of pollutant concentration and refractory organic matter， the process of regulating tank+hydrolysis acidification tank+two-stage A/O+Fenton+high efficiency sedimentation tank+V-type filter was adopted in the expansion project. The Fenton process was added, and MSBR was transformed into A/A/O tank, flocculation sedimentation tank was reformed in upgrading project. The actual operation effect was good, and the effluent quality reached the design goal completely, and the direct operating cost was 1.42 yuan/m3.
Last Update:
2020-09-17