Sewer Sedimentation Control
Credits: 6 PDH
PDH Course Description:
Sewer sediment is one of major sources of pollutants in urban wet-weather flow (WWF) discharges that include combined-sewer overflow (CSO), separate sanitary-sewer overflow (SSO), and stormwater runoff. During lowflow, dry-weather periods, sanitary wastewater solids deposited in combined sewers have significant adverse impacts on the integrity of the sewerage system and receiving-water quality. In the US, estimates of dry-weather flow deposition in combined sewers vary from 5 to 30% of the daily inputs of solids and pollutants.This course covers sources of sewer solids, sewer solids loading, sewer sediment and associated pollutants and their impacts, sewer cleaning, and in-sewer sediment control. For in-sewer sediment control, the report presents a number of in-sewer flushing systems with case studies.Topics:
- Sources of Sewer Sediment
- Overland Surface Runoff Solids
- Sanitary Wastewater Solids
- Structural Deterioration of Sewerage System
- Receiving Water, Groundwater
- Storm Runoff Solids Loading
- Litter and Floatables
- Effects of Roadway Sanding,Street Dust and Dirt
- Road Sand, Street Dust and Dirt, Soil Erosion
- Summary of Solids Loading
- Effects of Age and Maintenance
- Organic Pollutant loading
- Hydrogen Sulfide in Sewers, and Factors Affecting Sulfide Concentration
- Structural Corrosion
- Hydrogen sulfide and Dissolved Sulfide Sampling and Testing Procedures
- Wastewater, Pore Space, Continuous Dissolved Sulfide Sampling
- Power Rodding, Balling, Jetting, Pigging, Power Bucket, Silt Traps
- Vacuum Flushing System and Automatic Vacuum Flushing Systems
- Flushing Small Diameter Sewers
- Alternative Sources of Flush Water
- Integration of New Conveyance System/Flushing Vaults and Grit Pit Functionalities
- Flushing Vaults, Grit Pits
- Sediment Accumulation and Estimating Methodology
- Runoff Volumes
- Potential Wet Weather Solids Deposition
- Operation and Maintenance Costs
- Cost Effectiveness Analysis of Automated Flushing vs Periodic Manual Sediment Removal
- Capital Costs for the Automated Flushing Systems, and Manual Cleaning
To take this course:
1.) Enroll in Course:Click below to enroll:
(must be logged into your user account)
Download the Study Guide
3.) Test: Once you've thoroughly read the course materials, please click below to take the final examination.
Take the final exam
4.) Certificate: A passing grade of 70% or higher on the exam, is required to receive the certificate of completion for this PDH course.
NOTE: After the exam is completed, you will need to return to this page, in order to print (download) the certificate of completion.
Print the Certificate of Completion
Intended Audience: for civil, construction, and hydraulic engineers.
Publication Source: US Environmental Protection Agency
Print the Certificate of Completion
Intended Audience: for civil, construction, and hydraulic engineers.
Publication Source: US Environmental Protection Agency
Donald Parnell, PE