<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>Residual anionic polyacrylamide in polymer-flooding oil production wastewater results in the formation of a thermodynamically stable system. In this study, the effects of three different types of medicaments, namely, cationic, anionic and nonionic agents, in dynamic treatments, such as adding a position, dosage and combined processes of chemical addition, on the oil removal rate of sewage were examined. In the treatment with a single agent, the oil removal rate of the cationic agent CQY-1 and the nonionic agent CHF-2 was ≥ 97.8%. The charge characteristics of different ionic agents for the combined dosing treatment indicated that the oil removal rate was better than that of a single agent; the combined dosing ratio was 50 mg/L CHP-1 and 50 mg/L CHP-2. At 80 mg/L CQY-1, the oil removal rate of the dynamic process was ≥ 98.8%, and the dosage of CQY-1 was reduced from 200 mg/L to 50–150 mg/L, which corresponded to a decrease of 25.0%–75.0%. Therefore, the combined dosing process effectively reduced the single dosage.</p>
</abstract>

Residual anionic polyacrylamide in polymer-flooding oil production wastewater results in the formation of a thermodynamically stable system. In this study, the effects of three different types of medicaments, namely, cationic, anionic and nonionic agents, in dynamic treatments, such as adding a position, dosage and combined processes of chemical addition, on the oil removal rate of sewage were examined. In the treatment with a single agent, the oil removal rate of the cationic agent CQY-1 and the nonionic agent CHF-2 was ≥ 97.8%. The charge characteristics of different ionic agents for the combined dosing treatment indicated that the oil removal rate was better than that of a single agent; the combined dosing ratio was 50 mg/L CHP-1 and 50 mg/L CHP-2. At 80 mg/L CQY-1, the oil removal rate of the dynamic process was ≥ 98.8%, and the dosage of CQY-1 was reduced from 200 mg/L to 50–150 mg/L, which corresponded to a decrease of 25.0%–75.0%. Therefore, the combined dosing process effectively reduced the single dosage.

Increasing Effect of Water Clarifiers on the Treatment of Polymer-Containing Oil Production Sewage

State Key Laboratory of Petroleum Pollution Control (Yangtze University)

School of Chemistry and Environmental Engineering

State Key Laboratory of Offshore Oil Exploitation

Polish Journal of Chemical Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Residual anionic polyacrylamide in polymer-flooding oil production wastewater results in the formation of a thermodynamically stable system. In this study, the...

Increasing Effect of Water Clarifiers on the Treatment of Polymer-Containing Oil Production Sewage

Published Online: Jul 15, 2021

Page range: 20 - 26

DOI: https://doi.org/10.2478/pjct-2021-0012

Keywords
cationic agent, increasing effect, oil removal rate, water clarifiers

© 2021 Xianqing Yin et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Increasing Effect of Water Clarifiers on the Treatment of Polymer-Containing Oil Production Sewage

Published Online: Jul 15, 2021

Page range: 20 - 26

DOI: https://doi.org/10.2478/pjct-2021-0012

Keywordscationic agent, increasing effect, oil removal rate, water clarifiers

© 2021 Xianqing Yin et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Keywords
cationic agent, increasing effect, oil removal rate, water clarifiers