{"id":155472,"date":"2019-06-12T10:00:03","date_gmt":"2019-06-12T10:00:03","guid":{"rendered":"http:\/\/blog.hannaservice.eu\/mesure-du-ph-dans-les-eaux-pluviales-des-chantiers-de-construction\/"},"modified":"2022-10-10T12:11:27","modified_gmt":"2022-10-10T12:11:27","slug":"mesure-du-ph-dans-les-eaux-pluviales-des-chantiers-de-construction","status":"publish","type":"post","link":"https:\/\/blog.hannaservice.eu\/fr\/mesure-du-ph-dans-les-eaux-pluviales-des-chantiers-de-construction\/","title":{"rendered":"Mesure du pH dans les eaux pluviales des chantiers de construction"},"content":{"rendered":"\t\t
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Les zones urbaines ont tendance \u00e0 avoir de grandes quantit\u00e9s de surfaces imperm\u00e9ables, ce qui entra\u00eene de gros volumes de ruiss\u00e8lement. Lorsque les eaux pluviales s’\u00e9coulent sur ces surfaces imperm\u00e9ables, des produits chimiques, des polluants, des d\u00e9bris et des s\u00e9diments sont collect\u00e9s.<\/div>\n<\/div>\n
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Ces eaux pluviales riches en polluants et en \u00e9l\u00e9ments nutritifs sont finalement drain\u00e9es dans les \u00e9gouts, o\u00f9 elles aboutissent dans une station d\u2019\u00e9puration pour traitement ou dans un plan d\u2019eau naturel tel que les rivi\u00e8res, les lacs, les terres humides et les estuaires.<\/p>\n

Les pr\u00e9cipitations et les eaux pluviales associ\u00e9es peuvent causer une pollution des eaux de surface et sont donc surveill\u00e9es et r\u00e9glement\u00e9es.<\/p><\/blockquote>\n

Aux \u00c9tats-Unis, les exigences en mati\u00e8re d\u2019\u00e9chantillonnage et de test diff\u00e8rent en fonction de l\u2019emplacement du ruissellement. Par exemple, les installations industrielles sont r\u00e9glement\u00e9es par le gouvernement f\u00e9d\u00e9ral et doivent avoir un plan de traitement et d\u2019analyse des temp\u00eates produisant une accumulation de 0,1 pouce apr\u00e8s une p\u00e9riode de s\u00e9chage de 72 heures. Les eaux de ruissellement des chantiers de construction ne sont pas r\u00e9glement\u00e9es par le gouvernement f\u00e9d\u00e9ral mais soumises \u00e0 la r\u00e9glementation locale.<\/p>\n

Eaux pluviales des chantiers de construction<\/h2>\n

La plupart des autorit\u00e9s locales exigent que les eaux pluviales sortant d\u2019un chantier de construction se situent dans une plage de pH de 6,5 \u00e0 8,5.<\/p>\n

Le pH des eaux pluviales est g\u00e9n\u00e9ralement mesur\u00e9 au point de rejet dans la voie navigable ou au moment o\u00f9 il quitte le site de construction. La mesure peut \u00eatre effectu\u00e9e directement dans les eaux de ruissellement ou d\u2019eaux pluviales ou dans un \u00e9chantillon recueilli dans une bouteille.<\/p>\n

Lorsque le pH est en dehors de cette plage, un traitement est n\u00e9cessaire. De plus, la source de pollution sur site doit \u00eatre identifi\u00e9e et corrig\u00e9e. Sur les chantiers de construction, les polluants peuvent provenir de diff\u00e9rentes sources.<\/p>\n

Les meilleures pratiques de gestion (MPG) telles que les barri\u00e8res anti-\u00e9rosion, les bassins de r\u00e9tention et les balles de foin sont souvent utilis\u00e9es pour capturer et filtrer les eaux de ruiss\u00e8lement, mais les barri\u00e8res anti-\u00e9rosion endommag\u00e9es ou une forte accumulation de s\u00e9diments r\u00e9duisent l\u2019efficacit\u00e9 des MPG.<\/p>\n

Le d\u00e9fi d\u2019une entreprise de construction<\/h2>\n

Une entreprise de construction a contact\u00e9 Hanna Instruments au sujet d\u2019un instrument permettant de mesurer le pH de leurs eaux pluviales sur place.<\/p>\n

Le client devait mesurer les m\u00e9taux lourds et le pH dans les eaux de ruissellement pour obtenir son permis local. Ils ont actuellement envoy\u00e9 des \u00e9chantillons \u00e0 un laboratoire pour analyse. Cependant, les mesures de pH devaient \u00eatre signal\u00e9es dans les 12 heures suivant l\u2019\u00e9v\u00e8nement de pluie. Les r\u00e9sultats de laboratoire ne remontaient pas toujours dans le temps et les tests \u00e9taient co\u00fbteux.<\/p>\n

L\u2019entreprise de construction est sp\u00e9cialis\u00e9e dans les quartiers pr\u00e9-planifi\u00e9s et travaille donc avec de grandes quantit\u00e9s de b\u00e9ton. Le client \u00e9tait tenu de signaler le pH de ses eaux pluviales, car le b\u00e9ton est fortement alcalin et peut fortement influer sur le pH des eaux pluviales si les BMP appropri\u00e9es ne sont pas en place.<\/p>\n

Le client avait besoin d\u2019un compteur robuste livr\u00e9 avec un \u00e9tui de transport pour une utilisation facile sur le terrain.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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Notre solution<\/strong>
\nL\u2019\u00e9quipe d\u2019assistance de Hanna Instruments a recommand\u00e9 le\u00a0pH-R\u00e9dox m\u00e8tre portable professionnel \u00e9tanche \u2013 HI98190<\/a>.<\/p>\n

\u00c9tanche et robuste<\/h4>\n

\u00c9tanche et robuste<\/strong>
\nLe client a appr\u00e9ci\u00e9 l\u2019\u00e9tanch\u00e9it\u00e9 du HI98190 et l\u2019a fourni avec l\u2019\u00e9lectrode de pH en titane pour eaux us\u00e9es \u2013 HI12963. La durabilit\u00e9 du compteur et de l\u2019\u00e9lectrode, ainsi que la mallette de transport robuste, ont permis au client de savoir que l\u2019\u00e9quipement aurait une longue dur\u00e9e de vie, m\u00eame lorsqu\u2019il est utilis\u00e9 par temps orageux.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t

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Pr\u00e9cis avec l\u2019enregistrement des donn\u00e9es<\/h4>\n

La fonction CAL Check \u2122 du HI98190 permettait au client de visualiser et de rapporter la derni\u00e8re calibration du compteur pour garantir la conformit\u00e9 de ses rapports de pH. La fonction de connexion \u00e0 la demande permettait au client de consigner la lecture du pH, la date et l\u2019heure de chaque mesure pour faciliter les rapports ult\u00e9rieurs.<\/p>\n

Le HI98190 offrait au client une solution pratique et utile pour ses besoins en mati\u00e8re de mesure du pH.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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D\u00e9couvrez nos instruments portables \u00e9tanches HI98190 et HI98191<\/h4>\t\t\t\t<\/div>\n\t\t\t\t
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Les zones urbaines ont tendance \u00e0 avoir de grandes quantit\u00e9s de surfaces imperm\u00e9ables, ce qui […]<\/p>\n","protected":false},"author":14,"featured_media":6081,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[392],"tags":[],"class_list":["post-155472","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industrie-fr"],"yoast_head":"\nMesure du pH dans les eaux pluviales des chantiers de construction - 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