{"id":9984,"date":"2016-10-21T00:00:00","date_gmt":"2016-10-20T14:00:00","guid":{"rendered":"https:\/\/isleutilities.com\/ecofiltrations-polonite-technology-is-successfully-tested-at-somerton-sewag\/"},"modified":"2025-02-26T10:08:15","modified_gmt":"2025-02-26T09:08:15","slug":"ecofiltrations-polonite-technology-is-successfully-tested-at-somerton-sewag","status":"publish","type":"post","link":"https:\/\/dev.isleutilities.com\/pt\/ecofiltrations-polonite-technology-is-successfully-tested-at-somerton-sewag\/","title":{"rendered":"Ecofiltration\u2019s Polonite\u00ae technology is successfully tested at Somerton Sewage Treatment Works"},"content":{"rendered":"

Utilidades da ilha<\/b> is excited to announce that the Polonite\u00ae <\/b>collaborative trial at Somerton Sewage Treatment Works (STW) has been <\/b>completed.<\/b><\/p>\n

Ecofiltration (formerly Bioptech) presented their Polonite\u00ae technology at UK TAG 35 in June 2014. In 2016 an opportunity for testing the effectiveness of the technology for phosphorus (P) removal and disinfection when applied to small\/medium STW arose at Somerton STW.<\/p>\n

A collaborative trial, with 6 water companies (Anglian Water, Irish Water, Severn Trent Water, United Utilities, Welsh Water, Wessex Water) was subsequently organised in order to validate the Polonite\u00ae technology. The trial recommenced on the 17th<\/sup> of June, 2016, and the plant was run continuously for 12 weeks (the plant had a few days of down time during the 12 weeks due to maintenance issues).<\/p>\n

Polonite\u00ae is formed from a highly porous calcium silicate mineral. P in wastewater reacts with free calcium released from the media to form various calcium phosphates, which are precipitated onto the media. Previous studies on wastewaters with levels of total-P between 5-20 mg\/l have shown a reduction to 0.1-0.3 mg\/l after treatment with Polonite\u00ae. In addition, Polonite\u00ae has been shown to
\nachieve a 99% reduction in bacteria. The reactive mineral has a limited life (up to 5 years at low flow rate and low consent limit for P discharge) but once spent can potentially be recycled as a nutrient rich, slow release fertiliser.<\/p>\n

Wastewater following treatment by the Polonite\u00ae filter has a high pH, starting at pH 12 and successively decreasing to pH 8-9. The rise in pH comes from the initial high content of calcium compounds in Polonite, which decreases during time as the material is used. Previous trials using pine bark demonstrated a good reduction in pH<\/p>\n

The main objectives of the trial were to determine:<\/p>\n

\u00b7 the P removal efficiency of Polonite\u00ae;<\/p>\n

\u00b7 the impact of the Polonite\u00ae media on pH and the performance of the bark pH control solution.<\/p>\n

The main results of the Polonite\u00ae collaborative trial indicated the following, based on the success criteria:<\/p>\n

\u00b7 P removal<\/i>. The Polonite\u00ae was considered to be successful as it removed >90% total phosphorus during the first six weeks, treating wastewater at a flow of 2 l\/min.<\/p>\n

\u00b7 pH control<\/i>. The bark was considered to be successful as a pH control strategy following the first 5 weeks, which occurred after the bark retention time was increased.<\/p>\n

\u00b7 Disinfection<\/i>. While the combined Polonite\u00ae and bark treatment did not meet the 99% bacterial inactivation target, the effluent met the EU Bathing Water Directive during the trial except for weeks 5 and 7, and it did meet 90% bacterial inactivation.<\/p>\n

The continuation of the collaborative trial is under discussion, which will allow a better understanding on the Polonite\u00ae media life. In addition, the potential use of P loaded Polonite\u00ae is being investigated at the University of Reading with real samples collected from the Polonite\u00ae tank. The objective is to verify nutrient content, P availability and plant uptake of P loaded Polonite\u00ae as well as the sorption capacity of heavy metals that might be present in contaminated soils and\/or wastewaters.<\/p>\n

For information, please contact Dr Blanca Antizar (blanca.antizar@isleutilities.com<\/a>)<\/p>\n<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/section>","protected":false},"excerpt":{"rendered":"

Isle Utilities is excited to announce that the Polonite\u00ae collaborative trial at Somerton Sewage Treatment Works (STW) has been completed.<\/p>","protected":false},"author":9,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":"","_members_access_role":[],"_members_access_error":""},"categories":[70],"tags":[],"class_list":["post-9984","post","type-post","status-publish","format-standard","hentry","category-industry-insights-and-trends"],"acf":[],"yoast_head":"\nEcofiltration\u2019s Polonite\u00ae technology is successfully tested at Somerton Sewage Treatment Works | Isle Utilities<\/title>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Ecofiltration\u2019s Polonite\u00ae technology is successfully tested at Somerton Sewage Treatment Works | Isle Utilities\" \/>\n<meta property=\"og:description\" content=\"Isle Utilities is excited to announce that the Polonite\u00ae collaborative trial at Somerton Sewage Treatment Works (STW) has been completed.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/dev.isleutilities.com\/pt\/ecofiltrations-polonite-technology-is-successfully-tested-at-somerton-sewag\/\" \/>\n<meta property=\"og:site_name\" content=\"Isle Utilities\" \/>\n<meta property=\"article:published_time\" content=\"2016-10-20T14:00:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-02-26T09:08:15+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/dev.isleutilities.com\/wp-content\/uploads\/2022\/06\/logo-bg.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"500\" \/>\n\t<meta property=\"og:image:height\" content=\"400\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta 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