Ahmed, S., Abdulrasool, A., Hamad, F., Hassn, A., Abdo, A., Erdeiny, A. (2024). Numerical and experimental study of floc characteristics induced by fully baffled mixing tank agitated with retreat curved impeller. , 17(3), 303-311. doi: 10.30772/qjes.2024.148635.1191
Safaa Salman Ahmed; Adnan Abdul Ameer Abdulrasool; Faiq A. Hamad; Ayman Alak Hassn; Anaam K. Abdo; Asmaa E. Erdeiny. "Numerical and experimental study of floc characteristics induced by fully baffled mixing tank agitated with retreat curved impeller". , 17, 3, 2024, 303-311. doi: 10.30772/qjes.2024.148635.1191
Ahmed, S., Abdulrasool, A., Hamad, F., Hassn, A., Abdo, A., Erdeiny, A. (2024). 'Numerical and experimental study of floc characteristics induced by fully baffled mixing tank agitated with retreat curved impeller', , 17(3), pp. 303-311. doi: 10.30772/qjes.2024.148635.1191
Ahmed, S., Abdulrasool, A., Hamad, F., Hassn, A., Abdo, A., Erdeiny, A. Numerical and experimental study of floc characteristics induced by fully baffled mixing tank agitated with retreat curved impeller. , 2024; 17(3): 303-311. doi: 10.30772/qjes.2024.148635.1191

Numerical and experimental study of floc characteristics induced by fully baffled mixing tank agitated with retreat curved impeller

Al-Qadisiyah Journal for Engineering Sciences
Article 12, Volume 17, Issue 3, September 2024, Pages 303-311    PDF (1.1 M)
Document Type: Research Paper
DOI: 10.30772/qjes.2024.148635.1191
Authors
Safaa Salman Ahmed* 1; Adnan Abdul Ameer Abdulrasool2; Faiq A. Hamad3; Ayman Alak Hassn4; Anaam K. Abdo1; Asmaa E. Erdeiny1
1The State Company for Glass and Refractories, the Ministry of Industry and Minerals(MIM), Ramadi, Iraq
2Sadar Al-Iraq University, College of Engineering, Baghdad, Iraq
3School of Science, Engineering and Design, Teesside University, Middleborough, The UK
4Department of Civil Engineering, College of Engineering, University of Basrah, Basrah, Iraq
Abstract
This study examines the impact of mixing methods in enhancing the coagulation-flocculation process. Two types of coagulants: Aluminum Sulfate Hydrate [Al2(SO4)3.16H2O] and Magnesium Chloride [MgCl2] were used. The polymer polyacrylamide (C3H5n) was utilized as a flocculent aid. A fully baffled mixing tank agitated with retreat curve impellers rotates in the range of  as an increment step and a mixing time of  was used in the present study. The present investigation includes two methodologies: the first is based on numerical solutions using MIXSIM 2.0 and ANSYS Fluent, while the second is based on experimental work. The Kaolin particles were utilized to represent the suspension collides in natural raw water. The image analysis technique was used to determine the surface area of producing flocs. The results established that the most appropriate impeller rotational speed for the flocculation process is in the range of and for alum coagulants. The maximum surface area of the floc was found to be  produced at  with  of mixing time and the maximum final floc surface area was  at  and  of mixing time. For magnesium chloride coagulant the max surface area of floc was produced at  and  of mixing time, the best impeller rotation speed was  produced the final surface area of floc which is  0.783 after  of the mixing tank. These types of floc are appropriate for the sedimentation process to be followed by the normal procedure of drinking water treatment.
Keywords
Mixing tank; Retreat impeller; Floc; Ansys; MIXSIM; Aluminum Sulfate Hydrate; Magnesium Chloride
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