ZHANGFang-fang,LIUXiao-zhi,ZHANGBo.Application of A2O/MBR/Catalytic Ozonation in Upgrading and Reconstruction of Wastewater Treatment Plant in Chemical Industrial Park[J].China Water & Wastewater,2022,38(20):61-64.
Application of A2O/MBR/Catalytic Ozonation in Upgrading and Reconstruction of Wastewater Treatment Plant in Chemical Industrial Park
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第38卷
Number:
第20期
Page:
61-64
Column:
Date of publication:
2022-10-17
- Keywords:
- wastewater treatment plant in chemical industrial park; upgrading and reconstruction; catalytic ozonation
- Abstract:
- In the design of a wastewater treatment plant upgrading project with scale of 1×104 m3/d in Circular Economy Industrial Park, Tieying Town, Laoling City, Shandong Province, the inflow is unstable and the water quality is characterized by complex composition, high pollutant concentration, containing lots of toxic, harmful and refractory substances and high chroma. In addition, there is no wastewater flow and quality adjustment process in the wastewater treatment plant, and high soluble refractory COD in the effluent from the biochemical process is detected. To solve these problems, a reconstruction scheme was proposed, including constructing an accident regulating tank and changing the carbon source to enhance the treatment performance of the original A2O/MBR process and adding catalytic ozonation process. The results of trial operation showed that the effluent quality stably reached the surface water class Ⅳ standard (except TN). The total investment of the wastewater treatment plant upgrading project was 19 million yuan, and the direct operating cost after upgrading was approximately 1.99 yuan/m3 (excluding the cost of sludge disposal, depreciation, maintenance, membrane process material replacement, etc.).
Last Update:
2022-10-17