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combined and separate collecting
systems
A theorical approach to calculted the emissions of
micoplastics in the environment
Bruno rakedjian
Urban areas and litter emissions
2
Emissions of litter
by dry weather
Urban Source
of litter
Fibers emissions from washing
machines (synthetic textiles)
Illicit discharges in the rain drainage system
Cleaning grandfather house
Or washing cars outside
Microplastics in cosmetics and
detergents
Households dust, surface maintenance
Waste discharged in collecting systems by
industries and tertiary sector
3
Emissions of litter by
wet weather
Urban Source
of litter
Bad management of waste
Chennai Corporation moots 30
litter-free roads for city
Cigarette Butts
Deterioration of building
paintings
Tire wear
Street wear (roads constructed
with plastics waste)
Artificial turf wear
Air pollution particles
4
Source: Kentucky Water Utility, Henderson, US
Micro
waste
Emission
Macro
micro
waste
Emission
Emission of
litter
Separate collecting systems
Micro
waste
Emission
Macro/
micro
waste
Emission
Combine collecting systems
Storm water overflows in the
Gowanus Canal in Brooklyn
https://www.youtube.com/watch?v=HzWOOqPAEgs
Fish eat plastic like teens eat fast food
Sanitation and rain
drainage system
5
Storm water
overflows
What happens
in a treatment
http://www.helcom.fi/Lists/Publications/Microplastics%20a
t%20a%20municipal%20waste%20water%20treatment%20
plant.pdf
Urban Waste Water Directive (UWWTD) requests 90% of removal of
Total Suspended Solid (TSS) and Urban Waste Water Treatment
Plant (UWWTP) TSS removal reaches 95%.
Most of the removed microparticles are in the sludge
http://www.livsmedelsverket.se/globalassets/om-
oss/samarbeten/nationellt-natverk-dricksvatten/material-fran-
moten/microplastics-ivl-k.magnusson.pdf
Removal in treatment plants
• Macro waste 100%
• Micro waste: Tertiary treatment: average 90-99%
• Micro waste: Primary treatment: 80-90%
Theoritical microplastic
emissions at EU level
UWWTP
95%removal
94%
treated
6%
untreated
20%
(25 sewage,
5 infiltration,
55 rain fall)
Rain drainage system
20%
60%
85 8700 35 1000
50 7700
Combine and sewage collecting systems
35 1000
3 350
47 35085 7700
Legend
Billion
m3
Trillion particles
of microplastics
100 – 5000 µm
range
CSO
Personal extrapolation using the
results of a French study:
Microplastic contamination in an urban
area: A case study in Greater Paris
Very first
estimation
7
Measures proposed
to be taken
Litter pressure
and impact
Improve knowledge about litter:
q Sources and emissions in urban areas.
q Emissions at world level
q Efficiency of existing waste water treatment
technologies
q Soil impact after reusing treated waste
water.
q Sludge disposal impact on soils.
q Evolution in concentrations in the main
rivers, lakes
8
Measures proposed
to be taken
Litter pressure
and impact
At source measures: (Article 191 of the treaty on the
functioning of the European Union)
q Ban of products and reduction in use.
q Implement natural water retention measures
(http://nwrm.eu/).
q Reduce impervious areas.
Other measures:
q Implement correctly existing EU regulations and
specifically UWWTD and Water Framework Directive
q Encourage reuse of waste water
q Progressivly phase out direct discharges from rain
drainage systems
Microplastics and air quality
9
Importance also to
improve air quality as it
containts microplastics
that are breathed by
people and can be
deposited on the soil or
water.
The quantity breathed is
much more than the
quantity of microplastic
eaten.
In France air quality has
improved concerning
PM10 and PM 2.5
Thank you for your attention
Bruno Rakedjian

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20190618 wastewater litter rakedjian

  • 1. Zoom on combined and separate collecting systems A theorical approach to calculted the emissions of micoplastics in the environment Bruno rakedjian Urban areas and litter emissions
  • 2. 2 Emissions of litter by dry weather Urban Source of litter Fibers emissions from washing machines (synthetic textiles) Illicit discharges in the rain drainage system Cleaning grandfather house Or washing cars outside Microplastics in cosmetics and detergents Households dust, surface maintenance Waste discharged in collecting systems by industries and tertiary sector
  • 3. 3 Emissions of litter by wet weather Urban Source of litter Bad management of waste Chennai Corporation moots 30 litter-free roads for city Cigarette Butts Deterioration of building paintings Tire wear Street wear (roads constructed with plastics waste) Artificial turf wear Air pollution particles
  • 4. 4 Source: Kentucky Water Utility, Henderson, US Micro waste Emission Macro micro waste Emission Emission of litter Separate collecting systems Micro waste Emission Macro/ micro waste Emission Combine collecting systems Storm water overflows in the Gowanus Canal in Brooklyn https://www.youtube.com/watch?v=HzWOOqPAEgs Fish eat plastic like teens eat fast food Sanitation and rain drainage system
  • 5. 5 Storm water overflows What happens in a treatment http://www.helcom.fi/Lists/Publications/Microplastics%20a t%20a%20municipal%20waste%20water%20treatment%20 plant.pdf Urban Waste Water Directive (UWWTD) requests 90% of removal of Total Suspended Solid (TSS) and Urban Waste Water Treatment Plant (UWWTP) TSS removal reaches 95%. Most of the removed microparticles are in the sludge http://www.livsmedelsverket.se/globalassets/om- oss/samarbeten/nationellt-natverk-dricksvatten/material-fran- moten/microplastics-ivl-k.magnusson.pdf Removal in treatment plants • Macro waste 100% • Micro waste: Tertiary treatment: average 90-99% • Micro waste: Primary treatment: 80-90%
  • 6. Theoritical microplastic emissions at EU level UWWTP 95%removal 94% treated 6% untreated 20% (25 sewage, 5 infiltration, 55 rain fall) Rain drainage system 20% 60% 85 8700 35 1000 50 7700 Combine and sewage collecting systems 35 1000 3 350 47 35085 7700 Legend Billion m3 Trillion particles of microplastics 100 – 5000 µm range CSO Personal extrapolation using the results of a French study: Microplastic contamination in an urban area: A case study in Greater Paris Very first estimation
  • 7. 7 Measures proposed to be taken Litter pressure and impact Improve knowledge about litter: q Sources and emissions in urban areas. q Emissions at world level q Efficiency of existing waste water treatment technologies q Soil impact after reusing treated waste water. q Sludge disposal impact on soils. q Evolution in concentrations in the main rivers, lakes
  • 8. 8 Measures proposed to be taken Litter pressure and impact At source measures: (Article 191 of the treaty on the functioning of the European Union) q Ban of products and reduction in use. q Implement natural water retention measures (http://nwrm.eu/). q Reduce impervious areas. Other measures: q Implement correctly existing EU regulations and specifically UWWTD and Water Framework Directive q Encourage reuse of waste water q Progressivly phase out direct discharges from rain drainage systems
  • 9. Microplastics and air quality 9 Importance also to improve air quality as it containts microplastics that are breathed by people and can be deposited on the soil or water. The quantity breathed is much more than the quantity of microplastic eaten. In France air quality has improved concerning PM10 and PM 2.5
  • 10. Thank you for your attention Bruno Rakedjian