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[{"key": "dc.contributor.advisor", "value": "Meril\u00e4inen, Jarmo", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.advisor", "value": "H\u00e4m\u00e4l\u00e4inen, Heikki", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.advisor", "value": "Saukkoriipi, Jaakko", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Sillanp\u00e4\u00e4, Jarmo", "language": null, "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2016-08-11T07:12:46Z", "language": "", "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2016-08-11T07:12:46Z", "language": "", "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2016", "language": null, "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.other", "value": "oai:jykdok.linneanet.fi:1567049", "language": null, "element": "identifier", "qualifier": "other", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/50932", "language": "", "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Suurten virtaamien vaikutus turvetuotantoalueilta purkautuvan veden laatuun sek\u00e4 ainekuormitukseen on her\u00e4tt\u00e4nyt paljon keskustelua viime vuosina. Ajantasaista tutkimustietoa vesienk\u00e4sittelymenetelmien tehosta suurten virtaamien aikana on kuitenkin v\u00e4h\u00e4n saatavilla. Virtaaman vaikutusta turvetuotantoalueelta l\u00e4htev\u00e4n veden laatuun, ainekuormitukseen sek\u00e4 erilaisten vesienk\u00e4sittelymenetelmien puhdistustehoon arvioitiin 36 turvetuotantoalueen p\u00e4\u00e4st\u00f6tarkkailutuloksista vuosilta 2008\u20132013. Tutkielmassa tarkasteltiin nelj\u00e4\u00e4 keskeist\u00e4 veden laadun kuvaajaa, fosforia, typpe\u00e4, kiintoainetta ja happea kuluttavaa orgaanista ainesta (CODMn). Ennakko-olettamuksena oli, ett\u00e4 vedenlaatu ja vesienk\u00e4sittelyrakenteiden puhdistusteho heikkenev\u00e4t suurten virtaamien aikana.\r\n\r\nTurvetuotantoalueilla, joilla oli k\u00e4yt\u00f6ss\u00e4 perustason vesienk\u00e4sittely (laskeutusaltaat ja virtaamans\u00e4\u00e4t\u00f6) tai kosteikko, suurimmat kiintoainepitoisuudet mitattiin suurten valumien aikana. Vastaavasti pintavalutuskent\u00e4llisill\u00e4 kohteilla suurimmat kiintoainepitoisuudet mitattiin pienten valumien aikana. Valuman lis\u00e4\u00e4ntyess\u00e4 kiintoaineen keskim\u00e4\u00e4r\u00e4isiss\u00e4 puhdistustehoissa ei tapahtunut muutosta vesienk\u00e4sittelyrakenteilla. Kaikilta vesienk\u00e4sittelymenetelmilt\u00e4 l\u00e4htev\u00e4n veden kokonaistyppi ja -fosforipitoisuudet sek\u00e4 CODMn-arvot olivat suurimat pienten valumien aikana. Vuorokauden keskim\u00e4\u00e4r\u00e4inen kuormitus kasvoi valumaluokan noustessa kaikilla vedenlaatumuuttujilla. Ylivirtaamatilanteiden aikaisten kuormitusjaksojen (jaksojen kesto keskim\u00e4\u00e4rin 17 p\u00e4iv\u00e4\u00e4) osuus vuosikuormituksesta oli keskim\u00e4\u00e4rin 12\u201317 % vedenlaatumuuttujasta riippuen. Yksitt\u00e4isen ylivirtaamajakson (22 p\u00e4iv\u00e4\u00e4) aikaisen kiintoainekuormituksen osuus vuosikuormituksesta oli suurimmillaan 75 %. Tutkielman tulosten perusteella valuman vaikutus etenkin pintavalutuskentilt\u00e4 purkautuvan veden laatuun oli ennakko-oletuksesta poiketen v\u00e4h\u00e4inen, suhteessa valuman muutoksiin. T\u00e4st\u00e4 johtuen ylivirtaamatilanteiden aikaisten kuormitusten luotettavan arvioinnin perustana tulisi olla jatkuvatoiminen virtaamanmittaus. Mik\u00e4li tuotantoalueella ei ole omaa virtaamanmittausta, tulisi kuormitusten arvioinnissa k\u00e4ytt\u00e4\u00e4 apuna l\u00e4hell\u00e4 sijaitsevan tuotantoalueen jatkuvatoimisesti mitattuja valumia.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Water quality and loading in peat production sites during high runoffs has generated much discussion. Only little up-to-date information is available about water treatment methods reductions during high runoff. The objective of this thesis was to evaluate how runoff affects water quality, loadings and water treatment purifications in peat production sites. The thesis is based on monitoring results recorded in 36 peat production sites in 2008\u20132013. The changes were surveyed in four main water quality parameters: phosphorus, nitrogen, suspended solids and oxygen consumptive organic matter, the latter of which was measured by chemical oxygen demand (CODMn). The initial assumption was that water quality and reductions will deteriorate during high runoff.\r\n\r\nDrainage waters from sites with only basic water treatment methods (sedimentation ponds and peak runoff control) or wetlands had high concentration of suspended solids with high runoff. In those sites which had overland flow fields, the highest concentrations of suspended solids were measured during low runoffs. Average reductions of suspended solids did not decrease with increasing runoff. Nitrogen and phosphorus concentrations and COD were highest during the low runoffs. Peak runoffs increased average loadings in every water quality parameter. The average loading during peak runoffs (average 17 days) comprised about 12\u201317 % of the annual loading of the studied parameters, but in some cases the proportions were even 75 % (duration 22 days). The result of this thesis shows that importance of runoff to water quality especially in overland flow fields was less than assumed. Therefore the permanent flow record should be the base when peak runoff loadings are estimated. In those sites, which do not have permanent flow record, the annual loading should be evaluated by using the runoffs in the nearest peat production site, in which these values are available.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted using Plone Publishing form by Jarmo Sillanp\u00e4\u00e4 (jaalsill) on 2016-08-11 07:12:45.838079. Form: Pro gradu -lomake (https://kirjasto.jyu.fi/julkaisut/julkaisulomakkeet/pro-gradu-lomake). JyX data: [jyx_publishing-allowed (fi) =True]", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by jyx lomake-julkaisija (jyx-julkaisija.group@korppi.jyu.fi) on 2016-08-11T07:12:46Z\r\nNo. of bitstreams: 2\r\nURN:NBN:fi:jyu-201608113768.pdf: 925278 bytes, checksum: c2f7ecbfeda6ae459360dbfcb26c38fa (MD5)\r\nlicense.html: 4856 bytes, checksum: 5c91564bc4e34b839c501209ef1f4b29 (MD5)", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2016-08-11T07:12:46Z (GMT). No. of bitstreams: 2\r\nURN:NBN:fi:jyu-201608113768.pdf: 925278 bytes, checksum: c2f7ecbfeda6ae459360dbfcb26c38fa (MD5)\r\nlicense.html: 4856 bytes, checksum: 5c91564bc4e34b839c501209ef1f4b29 (MD5)\r\n Previous issue date: 2016", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "1 verkkoaineisto (51 s.)", "language": null, "element": "format", "qualifier": "extent", "schema": "dc"}, {"key": "dc.format.mimetype", "value": "application/pdf", "language": null, "element": "format", "qualifier": "mimetype", "schema": "dc"}, {"key": "dc.language.iso", "value": "fin", "language": null, "element": "language", "qualifier": "iso", "schema": "dc"}, {"key": "dc.rights", "value": "In Copyright", "language": "en", "element": "rights", "qualifier": null, "schema": "dc"}, {"key": "dc.subject.other", "value": "turvetuotanto", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": 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