connecticut department of energy and environmental · pdf fileconnecticut department of energy...
TRANSCRIPT
![Page 1: Connecticut Department of Energy and Environmental · PDF fileConnecticut Department of Energy and Environmental Protection Proper Management of . Sewage Treatment Plant (STP) Screenings](https://reader031.vdocument.in/reader031/viewer/2022022422/5a9d0a117f8b9af60a8bf7ff/html5/thumbnails/1.jpg)
Connecticut Department of Energy and Environmental Protection
![Page 2: Connecticut Department of Energy and Environmental · PDF fileConnecticut Department of Energy and Environmental Protection Proper Management of . Sewage Treatment Plant (STP) Screenings](https://reader031.vdocument.in/reader031/viewer/2022022422/5a9d0a117f8b9af60a8bf7ff/html5/thumbnails/2.jpg)
Connecticut Department of Energy and Environmental Protection
Proper Management of Sewage Treatment Plant (STP)
Screenings and Grit
June 23, 2015Carey L. [email protected](860) 424-3248 Solid Waste Advisory Committee
![Page 3: Connecticut Department of Energy and Environmental · PDF fileConnecticut Department of Energy and Environmental Protection Proper Management of . Sewage Treatment Plant (STP) Screenings](https://reader031.vdocument.in/reader031/viewer/2022022422/5a9d0a117f8b9af60a8bf7ff/html5/thumbnails/3.jpg)
Connecticut Department of Energy and Environmental Protection
What are STP Screenings and Grit?
![Page 4: Connecticut Department of Energy and Environmental · PDF fileConnecticut Department of Energy and Environmental Protection Proper Management of . Sewage Treatment Plant (STP) Screenings](https://reader031.vdocument.in/reader031/viewer/2022022422/5a9d0a117f8b9af60a8bf7ff/html5/thumbnails/4.jpg)
Connecticut Department of Energy and Environmental Protection
Course Screens aka Bar Racks
![Page 5: Connecticut Department of Energy and Environmental · PDF fileConnecticut Department of Energy and Environmental Protection Proper Management of . Sewage Treatment Plant (STP) Screenings](https://reader031.vdocument.in/reader031/viewer/2022022422/5a9d0a117f8b9af60a8bf7ff/html5/thumbnails/5.jpg)
Connecticut Department of Energy and Environmental Protection
STP Screenings • Typical Components:
– Textiles– Plastics– Paper– Rocks– Wood– Organics– Other Rubbish
![Page 6: Connecticut Department of Energy and Environmental · PDF fileConnecticut Department of Energy and Environmental Protection Proper Management of . Sewage Treatment Plant (STP) Screenings](https://reader031.vdocument.in/reader031/viewer/2022022422/5a9d0a117f8b9af60a8bf7ff/html5/thumbnails/6.jpg)
Connecticut Department of Energy and Environmental Protection
Grit Removal • Grit – sand, silt, cinder, small gravel, coffee
grounds, eggshells and other inert materials• Grit is very abrasive to mechanical
processing equipment and will cause excessive wear
• Grit will also accumulate in tanks, digesters and pipes causing down time for clean outs
• Aerated chambers, horizontal flow through basins, vortex removal and hydrocyclones
![Page 7: Connecticut Department of Energy and Environmental · PDF fileConnecticut Department of Energy and Environmental Protection Proper Management of . Sewage Treatment Plant (STP) Screenings](https://reader031.vdocument.in/reader031/viewer/2022022422/5a9d0a117f8b9af60a8bf7ff/html5/thumbnails/7.jpg)
Connecticut Department of Energy and Environmental Protection
• Bridgeport, West Side (40 MGD) – 305 cy/week– Daily disposal
• Norfolk (0.35 MGD) – 0.012 cy/week– Yearly disposal (0.624 cy/year)
Volumes of Screenings and Grit
![Page 8: Connecticut Department of Energy and Environmental · PDF fileConnecticut Department of Energy and Environmental Protection Proper Management of . Sewage Treatment Plant (STP) Screenings](https://reader031.vdocument.in/reader031/viewer/2022022422/5a9d0a117f8b9af60a8bf7ff/html5/thumbnails/8.jpg)
Connecticut Department of Energy and Environmental Protection
• Screenings and Grit are defined as ‘Special Waste’ by the Department
• Special Waste require special handling and disposal procedures based on its physical and chemical characteristics
• Permitted Solid Waste Landfills– Manchester Landfill
Management/Disposal
![Page 9: Connecticut Department of Energy and Environmental · PDF fileConnecticut Department of Energy and Environmental Protection Proper Management of . Sewage Treatment Plant (STP) Screenings](https://reader031.vdocument.in/reader031/viewer/2022022422/5a9d0a117f8b9af60a8bf7ff/html5/thumbnails/9.jpg)
Connecticut Department of Energy and Environmental Protection
• Stockpiled at Sewage Treatment Plant• Resources Recovery Facilities (RRF) –
– directly transported to a permitted RRF and disposed as special waste; or
– if it has been properly “washed, ground and dewatered”, may be accepted as municipal solid waste
Management/Disposal
![Page 10: Connecticut Department of Energy and Environmental · PDF fileConnecticut Department of Energy and Environmental Protection Proper Management of . Sewage Treatment Plant (STP) Screenings](https://reader031.vdocument.in/reader031/viewer/2022022422/5a9d0a117f8b9af60a8bf7ff/html5/thumbnails/10.jpg)
Connecticut Department of Energy and Environmental Protection
Processing Screenings
![Page 11: Connecticut Department of Energy and Environmental · PDF fileConnecticut Department of Energy and Environmental Protection Proper Management of . Sewage Treatment Plant (STP) Screenings](https://reader031.vdocument.in/reader031/viewer/2022022422/5a9d0a117f8b9af60a8bf7ff/html5/thumbnails/11.jpg)
Connecticut Department of Energy and Environmental Protection
Washing, Grinding & Dewatering
![Page 12: Connecticut Department of Energy and Environmental · PDF fileConnecticut Department of Energy and Environmental Protection Proper Management of . Sewage Treatment Plant (STP) Screenings](https://reader031.vdocument.in/reader031/viewer/2022022422/5a9d0a117f8b9af60a8bf7ff/html5/thumbnails/12.jpg)
Connecticut Department of Energy and Environmental Protection
• Department may conduct a survey in the future to assess the current management of screenings, grit as well as sewage sludge
• Department may inspect facilities to determine compliance with State Statutes, Regulations and Permits
Possible Survey & Inspections
![Page 13: Connecticut Department of Energy and Environmental · PDF fileConnecticut Department of Energy and Environmental Protection Proper Management of . Sewage Treatment Plant (STP) Screenings](https://reader031.vdocument.in/reader031/viewer/2022022422/5a9d0a117f8b9af60a8bf7ff/html5/thumbnails/13.jpg)
NameTitleEmailPhoneWeb
Connecticut Department of Energy and Environmental Protection
Any Questions?