LI Ping-yuan,LIANG Li-bao,YAN Heng-bing,et al.Optimization and Application of Wastewater Treatment Process in Baikouquan United Station[J].China Water & Wastewater,2021,37(8 8):164-163.
Optimization and Application of Wastewater Treatment Process in Baikouquan United Station
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第37卷
Number:
8 8
Page:
164-163
Column:
Date of publication:
2021-04-17
- Keywords:
- light oil-containing wastewater system; process optimization; electrolytic salt sterilization; pre-oxidation treatment; filter
- Abstract:
- There are some problems in the light oil-containing wastewater treatment system of Baikouquan united station, such as poor quality of recycled water, high concentration of Fe2+, unstable effluent, and poor operation efficiency of the filter. To tackle these problems, the recycled water is pre-treated and then mixed into the system influent, which is also pre-oxidized. Additionally, the injection point of the electrolytic salt sterilization was moved from the outlet to the inlet of the filter. After process optimization, results indicate that the suspended solids and oil content of the recycled water could be controlled below 150 mg/L after pretreatment and system influent quality is stable. After adding 20 mg/L of oxidant to the system influent, the average value of Fe2+ could be reduced from 22 mg/L to 5 mg/L. The injection point relocation of the electrolytic salt sterilization solves the issues of filtering material hardening and plugging, and also eliminates the effect of Fe2+ on the quality of water from the outlet of filter. Due to system optimization, the overall wastewater treatment remains more stable and the water quality can meet the injection water standard continuously.
Last Update:
2021-04-17