YAN Ting-wen,PI Jing-yao,LIU Shi-de.Design of Ozonation Process in Large Underground Sewage Treatment Plant[J].China Water & Wastewater,2021,37(10 10):89-94.
Design of Ozonation Process in Large Underground Sewage Treatment Plant
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第37卷
Number:
10 10
Page:
89-94
Column:
Date of publication:
2021-05-17
- Abstract:
- A large underground sewage treatment plant in Tianjin adopted ozonation technology as an advanced treatment process to remove refractory COD in sewage. The design treatment capacity of the project was 60×104 m3/d, and the effluent water quality was required to meet the limitations of Tianjin local A discharge standard. Ozonation process system mainly consisted of liquid oxygen station, ozone preparation room, ozone contact tank, exhaust destruction room, etc. The present work mainly discussed the overall process design of the ozone system, and introduced the design details of each treatment unit, equipment arrangement and pipeline routing. The key points were as follows: the preparation room was arranged near the outer edge of the box; the generator room was designed with three explosion-proof walls and one pressure-relief wall; external circulation of cooling water flowed back to ultrafiltration outlet channel to save the consumption of cooling water; each group of ozone contact tank had two feeding points with dosage ratio of 1 ∶1, etc. The design focused on the overall relationship among various structures of the ozone system to ensure the effluent water quality of the ozone system.
Last Update:
2021-05-17