Centralized/ Decentralized Treatment Approaches Brian M cBride, Wood Environment & Infrastructure Solutions Inc. February 20, 2019
Agenda v Definitions A. SG-1 Plan Rubric B. Options, alternatives, scenarios v Centralized/ Decentralized Treatment Approaches A. Point of Use / Point of Entry B. Single Private Well-head System C. Clustered Private Well-head System D. Shared Groundwater Treatment E. Centralized Groundwater Treatment F. Regional Groundwater Treatment G. Regional Surface Water Supply 2/ 26/ 2019 2
v Definitions Water Supply Improvement Options Scenarios B. SG-1 Plan Rubric Regional Characteristics & Concept-Level Projects Community Profiles 2/ 26/ 2019 3
v Definitions B. Definitions – for the purposes of this project • Technical Options – different technologies for treating the water • Water Supply Improvement Options – different means of improving affected area water supply in general • Treatment Approach Alternatives – different means to provide unaffected or treated water to a particular water consumer or area (centralized or decentralized) • Water Supply Improvement Alternative Scenarios – matrix of water supply improvement options for all LGUs 2/ 26/ 2019 4
v Centralized/ Decentralized Treatment Approaches q Point of Use • Treatment unit (filter) installed at drinking water faucet • Only treats water intended for drinking or other consumption • Local and rural approach q Point of Entry • Treatment unit installed at building entry • Treats all potable water in household use • Local approach 2/ 26/ 2019 5
v Centralized/ Decentralized Treatment Approaches q Single Private Well-head S ystem • Treatment unit installed at well structure • Treats all water from the local private well • Local and rural approach q Clustered Private Well-head S ystem • Treatment unit for multiple local wells or users • Treats all potable water for multi-households 2/ 26/ 2019 6
v Centralized/ Decentralized Treatment Approaches q Shared Groundwater Treatment (local cooperative or entity) • Local cluster treatment facility for private wells Treated water Untreated water Water Well Treatment Facility 2/ 26/ 2019 7
v Centralized/ Decentralized Treatment Approaches q Centralized Groundwater Treatment (municipal) • Local cluster treatment facility for public wells Untreated water Treated water Potable Water Distribution S ystem 2/ 26/ 2019 8
v Centralized/ Decentralized Treatment Approaches q Regional Groundwater Treatment • Centralized municipal groundwater treatment LGU “Y” LGU “X” Treated water Potable Water Distribution S ystem 2/ 26/ 2019 9
v Centralized/ Decentralized Treatment Approaches q Regional Surface Water Supply • Centralized surface water treatment and distribution (new or existing WTP) Water Treatment LGU “Z” Plant LGU “X” Potable Water Distribution S ystem LGU “Y” Potable Water Distribution S ystem 2/ 26/ 2019 10
v Centralized/ Decentralized Treatment Approaches q Combined Approach • Some LGU’s may have communities within its service area • Rural, semi-rural, suburban, urban, etc. • A combination of approaches for different parts of its service area may be appropriate, for example: • Point of entry/ use for existing private well users • Cluster groundwater treatment for isolated developments • Regional water supply for existing urban areas 2/ 26/ 2019 11
Thank you! Brian M cBride, PE Director, Water Design Center Wood Environment & Infrastructure Solutions, Inc. Brian.mcbride@woodplc.com 602-690-9328 2/ 26/ 2019 12
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