Living Machine at SFPUC Headquarters
Living Machine at SFPUC Headquarters
Marsha Sukardi Program Manager for the Living Machine Civil Engineer, Wastewater Enterprise San Francisco Public Utilities Commission
SFPUC HQ has two non-potable water reuse systems 1. Rainwater Harvesting System - Rainwater reused for irrigation 2. Living Machine System - Black- and greywater reused for toilet and urinal flushing
Reduces use from 12 gal/day/person 5 gal/day/person 2
Location of system components
How does it work?
4
Living Machine Treatment Process Disinfection Treatment Wetlands
Primary Tank
Equalization and Recirculation Tanks
Reclaimed Water Tank
Primary Tank
Primary Tank
Component
Function
Capacity
Notes
Trash Chamber
Receives sewage, settling and screening of larger solids
2,500 gal
Excess sewage pumped to sewer
7,500 gal
Filtered WW flows to EQ Tank
Settling Chamber Removal of settleable and suspended solids
7
Living Machine Treatment Process Disinfection Treatment Wetlands
Primary Tank
Equalization and Recirculation Tanks
Reclaimed Water Tank
Treatment Wetlands Tidal Flow Wetlands
Polishing Vertical Flow Wetlands
Vegetation supports diverse micro-organism populations Contains Engineered Gravel = Lightweight Expanded Shale (LESA)
Tidal Flow Wetland Tidal Flow Wetlands
• Alternates filling and draining
Equalization and Recirculation Tanks
Tidal Flow Wetland Soluble nutrients and organic matter move from solution to aggregate and biofilm
Next Fill and Drain cycle
NH4+ NO3- NO2Organic matter CO2 (g)
NO2- N2 (g)
Tidal Flow Wetland
12
Vertical Flow Wetland Polishing Vertical Flow Wetlands
Equalization and Recirculation Tanks
Vertical Flow Wetland
14
Vertical Flow Wetland
Living Machine Treatment Process
Treatment Wetlands
Primary Tank
Disinfection
Equalization and Reclaimed Water Tank Recirculation Tanks
Disinfection Equipment 1) 100μ Screen Filter
2) 5μ Cartridge Filter 3) Ultraviolet Disinfection
4) Tablet Chlorinator
Living Machine Treatment Disinfection Treatment Wetlands
Primary Tank
Equalization and Recirculation Tanks
Reclaimed Water Tank
Operating the Living Machine Automated control panel Mechanical components based on operator settings and sensor signals.
Human-Machine Interface (HMI) Graphical interface for remote access.
Acheivements • • • •
Saved over 3MG of potable water Produces high quality non-potable water Daily maintenance and monitoring is low Most popular building tour feature with over 2,500 visitors
20
Why did we install this?
21
Buildings produce water
22
Non-potable demands are significant
• Up to 50% of Multi-Family residential buildings’ water demands are non-potable
• Up to 95% of Commercial building’s water demands are nonpotable
23
Permitting: Collaborative effort
24
On-Site Water Reuse Ordinance
25
12
1 2 11
3 4
14
9
5 6
6
7
5
8 9
8
10 11 12 13
14
14 4 2
14
14 3
7 1
10 13
History lesson: “Living Machine”
“Design outlaws on the Ecological Frontier,” by Chris Zelov. Retreieved from http://www.ratical.org/co-globalize/DO_JohnTodd.html
27
History lesson: “Living Machine”
“Design outlaws on the Ecological Frontier,” by Chris Zelov. Retreieved from http://www.ratical.org/co-globalize/DO_JohnTodd.html
28
Thank you!
29
Marsha Sukardi Program Manager for the Living Machine Civil Engineer, Wastewater Enterprise San Francisco Public Utilities Commission
SFPUC HQ has two non-potable water reuse systems 1. Rainwater Harvesting System - Rainwater reused for irrigation 2. Living Machine System - Black- and greywater reused for toilet and urinal flushing
Reduces use from 12 gal/day/person 5 gal/day/person 2
Location of system components
How does it work?
4
Living Machine Treatment Process Disinfection Treatment Wetlands
Primary Tank
Equalization and Recirculation Tanks
Reclaimed Water Tank
Primary Tank
Primary Tank
Component
Function
Capacity
Notes
Trash Chamber
Receives sewage, settling and screening of larger solids
2,500 gal
Excess sewage pumped to sewer
7,500 gal
Filtered WW flows to EQ Tank
Settling Chamber Removal of settleable and suspended solids
7
Living Machine Treatment Process Disinfection Treatment Wetlands
Primary Tank
Equalization and Recirculation Tanks
Reclaimed Water Tank
Treatment Wetlands Tidal Flow Wetlands
Polishing Vertical Flow Wetlands
Vegetation supports diverse micro-organism populations Contains Engineered Gravel = Lightweight Expanded Shale (LESA)
Tidal Flow Wetland Tidal Flow Wetlands
• Alternates filling and draining
Equalization and Recirculation Tanks
Tidal Flow Wetland Soluble nutrients and organic matter move from solution to aggregate and biofilm
Next Fill and Drain cycle
NH4+ NO3- NO2Organic matter CO2 (g)
NO2- N2 (g)
Tidal Flow Wetland
12
Vertical Flow Wetland Polishing Vertical Flow Wetlands
Equalization and Recirculation Tanks
Vertical Flow Wetland
14
Vertical Flow Wetland
Living Machine Treatment Process
Treatment Wetlands
Primary Tank
Disinfection
Equalization and Reclaimed Water Tank Recirculation Tanks
Disinfection Equipment 1) 100μ Screen Filter
2) 5μ Cartridge Filter 3) Ultraviolet Disinfection
4) Tablet Chlorinator
Living Machine Treatment Disinfection Treatment Wetlands
Primary Tank
Equalization and Recirculation Tanks
Reclaimed Water Tank
Operating the Living Machine Automated control panel Mechanical components based on operator settings and sensor signals.
Human-Machine Interface (HMI) Graphical interface for remote access.
Acheivements • • • •
Saved over 3MG of potable water Produces high quality non-potable water Daily maintenance and monitoring is low Most popular building tour feature with over 2,500 visitors
20
Why did we install this?
21
Buildings produce water
22
Non-potable demands are significant
• Up to 50% of Multi-Family residential buildings’ water demands are non-potable
• Up to 95% of Commercial building’s water demands are nonpotable
23
Permitting: Collaborative effort
24
On-Site Water Reuse Ordinance
25
12
1 2 11
3 4
14
9
5 6
6
7
5
8 9
8
10 11 12 13
14
14 4 2
14
14 3
7 1
10 13
History lesson: “Living Machine”
“Design outlaws on the Ecological Frontier,” by Chris Zelov. Retreieved from http://www.ratical.org/co-globalize/DO_JohnTodd.html
27
History lesson: “Living Machine”
“Design outlaws on the Ecological Frontier,” by Chris Zelov. Retreieved from http://www.ratical.org/co-globalize/DO_JohnTodd.html
28
Thank you!
29
