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Wastewater Facilities🚱♻️, UA = Urban Agriculture, WRRFs = Water Resource…
Wastewater Facilities🚱♻️
Urban Agriculture
Benefits
reduces transportation distance
improve food accessibility
reduces price differentials
shorten supply chains
reduce food spoilage
improves social well-being
creates green spaces
social gathering
sense of community
reduces stress, anger and blood pressure😠
reduce mental fatigue
🧘🏻♀️restore concentration and calm
UA is a Profitable Business 💹
good investments 💵
farmers earn money with crops
good return rate
support economic vitality
clean public spaces
job opportunities
climate and ecological effects
providing vegetation
increase evapotranspiration
❄️produce cooling
mitigate urban climate
reduce urban heat island effect
concomitant water usage
reduce air temperature
increase relative humidity
species preservation
🪴provides resting spaces
🦋protects along migration paths
provides food
increases a city's biodiversity
urban space and waste
eyesore buildings ➡️pretty gardens
biosolids and composting as fertilizers
Examples
community garden
vertical farming
hydroponic
aeroponic
aquaponic systems
commercial urban farm
farmer's markets👨🏻🌾
door-to-door 🚪
rooftop greenhouse
educational and therapeutic garden
backyard garden
Results
Economic Impact
less cost than tap-water
commercialized biosolid bricks
commercialized bio-solid cement
widely accepted fertilizer
predicted positive economic result
Controversial
positive
new water source
new energy source
source of nutrients
renewable materials
Positive LCAs (Life Cycle Assessments)
negative
possibly negative
public health
trace metals
regulation limit of metals
established management practices
CECs (Containments of Emerging Concern)
pharmaceutical products💊
pesticides🪳
personal care products🧴
other pollutants
environment
necessary treatment and regulations
human health concerns
lack of understanding of CECs
Issues
limited arable land
energy intensive farming
water scarcity🚱
energy intensive transportation
non-renewable energy sources
Water Resource Reclamation Facilities
main products
reclaimed water
biosolids
other applications
bioplastic reproduction
construction materials
coating
packaging 📦
food wrapping
encapsulation of seeds🌱
biodegradable containers for greenhouses
many other products
biogas for UA
sulfur recovery
electricity and heat production
captures carbon dioxide
phosphorus fertilizer for UA
recover high-quality phosphoric minerals
counteracts high phosphorus price
Solutions
Urban Agriculture (UA)
WRRFs in UA
BioSolids in UA
Main products of WRRFs
Reclaimed Water
irrigation with reclaimed water
high-quality irrigation water
controllable chemical constituents
lots of treatment options
Stable supply
Energy saving
no additional water treatment
less transportation and storage 🛻
applications
unrestricted irrigation
US states develop regulations
includes crops for human consumption
includes crops without processing
must minimize risk
specified treatment processes
water quality standards
monitoring regimes
restricted irrigation
crops processed before consumption
crops not consumed
construction with biosolids 🏗️
Biosolids
soil amendment
amended biosolids
limed biosolids
composted biosolids
heat-dried biosolids
fertilizers for farmland
improve crop yield
improve fertility
construction materials 🚧
bricks 🧱
cement
fuel for heating greenhouses 🏡
produces heat
bio-oil/biocrude as alternative
produce solid bio-containers 🫙
adsorbents for air purification
UA = Urban Agriculture
Gabriella Sampino
WRRFs = Water Resource Reclamation Facilities
Pivotal role of municipal wastewater resource recovery facilities in urban agriculture: A review