Work

Comparative Study on Sedimentation Behavior of Polyacrylamide under Changes in Organic Matter and Clay Content in Sediment

Year: 2024

Type: article

Abstract: \nWith the advancement of water treatment projects in China, sediment treatment faces challenges such as high water content, slow settlement, and demanding dewatering. This study explores the settling effects of different organic synthetic flocculants (APAM, CPAM, NPAM) under varying viscous particles and organic matter content to optimize flocculant selection and improve dewatering efficiency. A volumetric sedimentation experiment evaluated flocculation performance, controlling viscous particles (15%, 35%, 55%) and organic matter (15 g/kg, 40 g/kg, 65 g/kg, 90 g/kg). Results showed that APAM performed best in high viscous particle conditions; CPAM was stable across varying organic matter levels, making it suitable for complex environments; NPAM excelled under high organic matter conditions. The study highlighted interactions between flocculant type, dosage, and silt properties, offering an optimization strategy for sediment treatment. It concludes that APAM suits high viscous particle and low-medium organic matter environments, CPAM is optimal for diverse conditions, and NPAM is effective in high organic matter scenarios. Future work should optimize application strategies, explore new flocculants, and validate their effects in practical applications.\n

Source: Springer Link (Chiba Institute of Technology)

DOI: 10.1051/e3sconf/202459801014/pdf

Authors: Shijun Dong, Yinghao Huang, Min Wu

Institution: Nanjing Hydraulic Research Institute

Language: English

Topic: Coagulation and Flocculation Studies

Subfield: Water Science and Technology

Field: Environmental Science

Domain: Physical Sciences

SDGs: Clean water and sanitation, Responsible consumption and production

Open Access status: green

Funders: Nanjing Hydraulic Research Institute, National Key Research and Development Program of China