Anglemont Water System Treatment Improvements Brett deWynter and - PowerPoint PPT Presentation

Anglemont Water System Treatment Improvements Brett deWynter and Kevin Witzke March 12, 2013

Properties of UV Light 400nm 40nm Visible Radio IR UV X-Rays Light  Vacuum Vacuum UV-A UV-B UV-C UV 300nm 200nm Germicidal Range Anglemont Water System March 12, 2013 Page 2 Treatment Improvements

What is UV Disinfection? • A Physical Process That Uses Electromagnetic Energy to prevent the Cellular Proteins and Nucleic Acids (i.e., DNA and RNA) From Further Replication Acids (i.e., DNA and RNA) From Further Replication • The germicidal UV irradiation ranges From 200 to 300 nm, with the optimum germicidal effect , p g occurring at a wavelength of 254 nm • The technique of choice for cost effective q inactivation of Giardia & Cryptosporidium Anglemont Water System March 12, 2013 Page 3 Treatment Improvements

Determine Design Criteria • Inactivation Targets • Design dosage – UV energy per unit area (mJ/cm2) – 3-log inactivation – Mechanical redundancy – Mechanical redundancy • Determine UV transmittance and water quality of supply supply • Hydraulics through the reactor is an important issue – Long straight pipe runs are ideal for new installations Long straight pipe runs are ideal for new installations – No air within vessel – Minimize water hammer concerns Anglemont Water System March 12, 2013 Page 4 Treatment Improvements

Reactor Location • Locate within process at the highest water quality, least flow variation and lowest system pressure least flow variation and lowest system pressure. – Filter effluent – Balancing reservoir inlet – Suction side of transmission pumps S ti id f t i i • Ensure reactors are fully submerged • Un-chlorinated process water (preferred) Anglemont Water System March 12, 2013 Page 5 Treatment Improvements

Schematic of the Disinfection Process – Located at the Reservoir 3 Site Located at the Reservoir 3 Site Anglemont Water System March 12, 2013 Page 6 Treatment Improvements

Process Flow Diagram Anglemont Water System March 12, 2013 Page 7 Treatment Improvements

Water Supply and Treatment Improvements • New lake intake intake • Foreshore pump station pump station • WTP • Two new booster stations Anglemont Water System March 12, 2013 Page 8 Treatment Improvements

Shuswap Lake Intake & Pump Station Anglemont Water System March 12, 2013 Page 9 Treatment Improvements

Anglemont Water Treatment Plant Anglemont Water System March 12, 2013 Page 10 Treatment Improvements

Reservoir 3 Site – Water Treatment Plant Treatment Plant • Integrated building – electrical room booster electrical room, booster station and treatment • Space for future filtration Space for future filtration • Masonry block buildings with rigid insulation and with rigid insulation and siding • Operator p washroom/working space Anglemont Water System March 12, 2013 Page 11 Treatment Improvements

Thank You Brett.dewynter@aecom.com Kevin.witzke@aecom.com