Optimum pH to Flocculate Construction Sediment
Location
CSU Ballroom
Start Date
2-4-2019 10:00 AM
End Date
2-4-2019 11:30 AM
Student's Major
Mechanical and Civil Engineering
Student's College
Science, Engineering and Technology
Mentor's Name
Steve Druschel
Mentor's Department
Mechanical and Civil Engineering
Mentor's College
Science, Engineering and Technology
Description
Sediment from construction sites can degrade the quality of water and endanger the livelihood of many creatures from aquatic worms to fish to human beings. Coagulation and Flocculation of construction sediments is a useful treatment method to protect the quality of rivers. However, the complexity of the process stems from the coagulant dosage and the pH level. This research focuses on finding the optimum pH for Ferric Chloride to receive the most efficient result in flocculating construction sediments. Standard practices for coagulation-flocculation, taken from drinking water treatment design, is used for mixing methods and the constant amount of Ferric Chloride dosage is determined by observation. The preliminary results suggest that the optimum pH is 6.0. While the efficiency of the water treatment revolves around the drop of turbidity and settling time, the evaluations of the system require an extensive amount of work as water treatment technologies are brought to construction sites, stormwater treatments and surface water discharges. Other factors, such as the disposal of post-mixing sediments, are considered for the evaluation of the overall quality of the system.
Optimum pH to Flocculate Construction Sediment
CSU Ballroom
Sediment from construction sites can degrade the quality of water and endanger the livelihood of many creatures from aquatic worms to fish to human beings. Coagulation and Flocculation of construction sediments is a useful treatment method to protect the quality of rivers. However, the complexity of the process stems from the coagulant dosage and the pH level. This research focuses on finding the optimum pH for Ferric Chloride to receive the most efficient result in flocculating construction sediments. Standard practices for coagulation-flocculation, taken from drinking water treatment design, is used for mixing methods and the constant amount of Ferric Chloride dosage is determined by observation. The preliminary results suggest that the optimum pH is 6.0. While the efficiency of the water treatment revolves around the drop of turbidity and settling time, the evaluations of the system require an extensive amount of work as water treatment technologies are brought to construction sites, stormwater treatments and surface water discharges. Other factors, such as the disposal of post-mixing sediments, are considered for the evaluation of the overall quality of the system.
Recommended Citation
Alibrahim, Mohsen. "Optimum pH to Flocculate Construction Sediment." Undergraduate Research Symposium, Mankato, MN, April 2, 2019.
https://cornerstone.lib.mnsu.edu/urs/2019/poster-session-A/10