Centralized/ Decentralized Treatment Approaches Brian M cBride, Wood - - PowerPoint PPT Presentation

Centralized/ Decentralized Treatment Approaches

Brian M cBride, Wood Environment & Infrastructure Solutions Inc. February 20, 2019

Agenda

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Definitions

A. SG-1 Plan Rubric B. Options, alternatives, scenarios

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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

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Definitions

B. SG-1 Plan Rubric

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Regional Characteristics & Community Profiles Water Supply Improvement Options Concept-Level Projects Scenarios

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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

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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

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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

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Centralized/ Decentralized Treatment Approaches

q Shared Groundwater Treatment (local cooperative or entity)

• Local cluster treatment facility for private wells

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Water Well Untreated water Treated water Treatment Facility

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Centralized/ Decentralized Treatment Approaches

q Centralized Groundwater Treatment (municipal)

• Local cluster treatment facility for public wells

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Potable Water Distribution S ystem Untreated water Treated water

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Centralized/ Decentralized Treatment Approaches

q Regional Groundwater Treatment

• Centralized municipal groundwater treatment

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Potable Water Distribution S ystem

LGU “X” LGU “Y”

Treated water

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Centralized/ Decentralized Treatment Approaches

q Regional Surface Water Supply

• Centralized surface water treatment and distribution (new or existing WTP)

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Potable Water Distribution S ystem

LGU “X” LGU “Y”

Potable Water Distribution S ystem

LGU “Z”

Water Treatment Plant

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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

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Thank you!

Brian M cBride, PE Director, Water Design Center Wood Environment & Infrastructure Solutions, Inc.

Brian.mcbride@woodplc.com 602-690-9328

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