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Utvärdering av städmaskiners förmåga att minska PM10-halter
Swedish National Road and Transport Research Institute, Society, environment and transport, Enviroment and traffic analysis.ORCID iD: 0000-0001-6600-3122
Swedish National Road and Transport Research Institute, Society, environment and transport, Enviroment and traffic analysis.
Swedish National Road and Transport Research Institute, Society, environment and transport, Enviroment and traffic analysis.ORCID iD: 0000-0002-0124-04802
SLB-analys.
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2011 (Swedish)Report (Other academic)Alternative title
Evaluation of road sweepers' ability to reduce PM10 concentration (English)
Abstract [sv]

I föreliggande projekt har tre städmaskiners effekt på PM10-halterna i luften och på vägytan provats. Två delstudier har genomförts: en i gatumiljö på Sveavägen i Stockholm och en med kontrollerade försök på Barkarby flygplats.

Försöken på Sveavägen visade att maskinernas effekt på de totala PM10-halterna var liten. Under särskilt gynnsamma meteorologiska förhållanden kunde dock signifikanta minskningar av det lokala bidraget på upp till 20 % konstateras. Maskin A bidrog oftare till förhöjda partikelhalter vid själva passagen än maskin B, medan maskin B oftare bidrog till förhöjda NOx-halter. Dammförrådet på vägytan visade sig svårt att utvärdera. Längs maskin A:s sträcka fanns dock det huvudsakliga förrådet av damm längs vägkanten, medan förrådet var störst längs vägmitten på maskin B:s sträcka. Försöken på Barkarby visade att maskin B, under torra förhållanden (maskin A utgick) förmådde städa upp ett utlagt material till ca 85–95 % (något lägre för PM10). Vid fuktiga förhållanden (maskin B utgick) var effektiviteten för maskin A drygt 40 % för hela materialet, medan effektiviteten för PM10 var avsevärt lägre (ca 5 %). Maskin C, som endast deltog i det fuktiga försöket, städade upp ca 99 % av det utlagda materialet och effektiviteten för PM10 var densamma.

Sammantaget visar detta projekt att städmaskiner kan bidra till minskade halter av PM10 i miljöer där uppvirvling är en viktig partikelkälla, men även att städteknik och stödstrategi behöver utvecklas för att fungera bra under olika meteorologiska förhållanden.

Abstract [en]

In this project three road sweepers' effect on PM10 concentrations in ambient air and on the road surface has been tested. Two studies have been carried out; one in street environment at Sveavägen in central Stockholm, Sweden, and one with controlled trials at Barkarby airport.

The tests at Sveavägen showed that the sweepers' effect on total PM10 concentrations was small. In particularly favourable meteorological conditions, however, significant decreases in the local PM10 contribution of up to 20% could be found. Sweeper A contributed more often to elevated PM10 concentration during drive-by than sweeper B, while sweeper B more frequently contributed to elevated NOx levels. The dust depot on the road surface proved difficult to evaluate. In sweeper A's road stretch was, however, the main depot along the roadside, while it was greatest along the road center in sweeper B's stretch.

Tests at Barkarby showed that sweeper B, under dry conditions (sweeper A was deleted) managed to clean up an applied material to about 85-95% (slightly lower for PM10). In moist conditions (sweeper B was deleted) the efficiency of sweeper A was slightly over 40% for the entire material, while significantly lower (approx. 5%) for PM10. Sweeper C, which only took part in the moist test, cleaned approximately 99% of the applied material and the efficiency for PM10 was the same.

Overall, this project shows that road sweepers can contribute to decreased concentrations of PM10 in environments where road dust suspension is an important source of particulate matter, but also that sweeping technology and sweeping strategy need to be developed to work well under different meteorological conditions.

Place, publisher, year, edition, pages
Linköping: Statens väg- och transportforskningsinstitut, 2011. , p. 57
Series
VTI rapport, ISSN 0347-6030 ; 707
Keyword [en]
Particulate matter, Dust, Dust removal, Equipment, Evaluation (assessment), Air pollution, Pollution concentration, Measurement, In situ
Keyword [sv]
Partiklar (luftburna), Damm, Avdamning, Utrustning, Utvärdering, Luftföroreningar, Föroreningshalter, Mätning, In situ
National Category
Infrastructure Engineering
Research subject
70 Road: Maintenance; 10 Road: Transport, society, policy and planning, 15 Road: Environment
Identifiers
URN: urn:nbn:se:vti:diva-1805Archive number: TRV 2010/19773OAI: oai:DiVA.org:vti-1805DiVA: diva2:670595
Available from: 2013-12-03 Created: 2013-12-03 Last updated: 2017-12-15Bibliographically approved

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