Scholarlink

Industrial applications often demand water quality that exceeds natural water conditions, necessitating effective multi-stage treatment. This study investigates a combined treatment approach utilizing iron (II) sulfate heptahydrate (FeSO4·7H2O), anionic polyacrylamide (PAM), and calcium hydroxide (Ca(OH)2) to remove turbidity, total suspended solids (TSS), chemical oxygen demand (COD), and phosphate ions (PO43−). The experimental procedure employed jar tests with variable reagent dosages, pH adjustments, sedimentation times, and temperature conditions. Removal efficiencies were evaluated using standard analytical methods and correlated via the Pearson analysis. Results demonstrated that optimal removal - up to 95% for turbidity and >90% for TSS - was achieved at 2500 ppm FeSO4·7H2O, 1.0 ppm PAM, and pH 9.0, with enhanced performance at 25 ± 5 ℃ and 1.4 h settling time. PO43− removal peaked at pH 8.0, likely due to precipitation of ferric and calcium with PO43−. Correlation analysis confirmed that coagulant dose, pH, and temperature were dominant factors in removal performance, while PAM exhibited a secondary but enhancing role. Microscopic observations indicated a transition to denser and more compact flocs during treatment. The integrated method demonstrated a synergistic effect, offering an efficient and scalable solution for improving industrial water quality.

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Processes Optimisation of Coagulation, Flocculation, and Liming for Power Plant Water Treatment

  • 会议论文

  • 发表日期：

    2026年

查看全文
  • Pavlo Kuznietsov,
  • Olha Biedunkova,
  • Alla Pryshchepa,
  • Olesya Yaroschuk

摘要

Industrial applications often demand water quality that exceeds natural water conditions, necessitating effective multi-stage treatment. This study investigates a combined treatment approach utilizing iron (II) sulfate heptahydrate (FeSO4·7H2O), anionic polyacrylamide (PAM), and calcium hydroxide (Ca(OH)2) to remove turbidity, total suspended solids (TSS), chemical oxygen demand (COD), and phosphate ions (PO43−). The experimental procedure employed jar tests with variable reagent dosages, pH adjustments, sedimentation times, and temperature conditions. Removal efficiencies were evaluated using standard analytical methods and correlated via the Pearson analysis. Results demonstrated that optimal removal - up to 95% for turbidity and >90% for TSS - was achieved at 2500 ppm FeSO4·7H2O, 1.0 ppm PAM, and pH 9.0, with enhanced performance at 25 ± 5 ℃ and 1.4 h settling time. PO43− removal peaked at pH 8.0, likely due to precipitation of ferric and calcium with PO43−. Correlation analysis confirmed that coagulant dose, pH, and temperature were dominant factors in removal performance, while PAM exhibited a secondary but enhancing role. Microscopic observations indicated a transition to denser and more compact flocs during treatment. The integrated method demonstrated a synergistic effect, offering an efficient and scalable solution for improving industrial water quality.