{"id":16615,"date":"2025-10-20T07:00:47","date_gmt":"2025-10-20T06:00:47","guid":{"rendered":"https:\/\/isleutilities.com\/?post_type=case-study&#038;p=16615"},"modified":"2025-10-18T21:42:53","modified_gmt":"2025-10-18T20:42:53","slug":"preventing-hazardous-chemical-pollution-at-source","status":"publish","type":"case-study","link":"https:\/\/dev.isleutilities.com\/pt\/case-study\/preventing-hazardous-chemical-pollution-at-source\/","title":{"rendered":"Preventing Hazardous Chemical Pollution at Source"},"content":{"rendered":"<p><b>Treatment Technologies to Prevent Hazardous Chemical Pollution at Source: Implications for the UK and Ireland<\/b><\/p>\n<p><i><span style=\"font-weight: 400;\">Isle evaluated technologies to reduce hazardous chemical inputs at sewer entry\u00a0<\/span><\/i><\/p>\n<p><span style=\"font-weight: 400;\">With over 150,000 hazardous substances in commercial use, the global chemicals market is projected to double in the next five years. This is a major concern for communities and the environment as chemicals may find their way into water bodies. Although there is greater regulation on chemicals than before, there is still a reliance on wastewater treatment works to remove them. Problematically, however, wastewater treatment works were never designed to manage these compounds. Despite the addition of supplementary treatment methods, this \u2018end of pipe\u2019 treatment may not completely remove hazardous chemicals. Instead, a far more effective method is preventing or minimising their entry into the sewer in the first place. This approach aligns with the Polluter Pays pillar in environmental regulation. Similarly, it reduces reliance on treatment, lowering operational costs, and helping utilities meet regulatory standards more effectively.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">UKWIR commissioned Isle to identify technologies capable of treating low-volume inputs of hazardous chemicals at sewer entry. The goal was to identify the most suitable technologies capable of reducing the chemical burden on wastewater treatment works and the environment.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Our team first undertook a review assessing solutions for the removal of 135 different hazardous chemicals. We identified 20 technologies potentially suitable for use at sewer entry, and developed four real-world case studies. We then produced a comprehensive technical report, assessing and providing up-to-date knowledge on each technology. We also highlighted key opportunities and limitations. Finally, we delivered a high level cost\u2013benefit analysis of financial and environmental impacts for each technology to support informed decision making.<\/span><\/p>\n<p><b>Benefits of Approach<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Treatment tech knowledge<\/b><span style=\"font-weight: 400;\">: Provided up-to-date knowledge of the technologies capable of treating low-volume hazardous chemical discharges directly at sewer entry points.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Assessment of challenges<\/b><span style=\"font-weight: 400;\">: Established the limits, challenges and opportunities of conventional and novel treatments in effectively dealing with hazardous substances.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Technology insight<\/b><span style=\"font-weight: 400;\">: Provided insight into how established and emerging technologies perform, and their limits for specific hazardous substance groups.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Cost\/benefit analysis<\/b><span style=\"font-weight: 400;\">: Established clear and reasoned cost\/benefit scenarios to support decision making. These scenarios estimated cost and associated environmental impacts for the removal and destruction of hazardous chemicals.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Established relevance<\/b><span style=\"font-weight: 400;\">: Reviewed case studies on established treatment technologies to assess their relevance and applicability for the UK and Irish water sector.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Industry guidance<\/b><span style=\"font-weight: 400;\">: Collaboratively shared findings and provided clear recommendations for the UK and Irish water sector.<\/span><\/li>\n<\/ul>\n<p><b>Specialist Services Involved\u00a0<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Identified emerging options<\/b><span style=\"font-weight: 400;\">: Our literature review identified technologies with potential to remove specific hazardous chemicals from four types of pollution sources more effectively.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Established real-world applicability<\/b><span style=\"font-weight: 400;\">: Developed a series of case studies on global technologies capable of removing specific hazardous chemicals from industrial sources.\u00a0<\/span><\/li>\n<\/ul>\n<p><b>Strategic guidance: <\/b><span style=\"font-weight: 400;\">Provided evidence-based guidance to support technology selection and strategic investment decisions.<\/span><\/p>\n<p><b>Resultados<\/b><span style=\"font-weight: 400;\">\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Our team\u2019s extensive review found:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Chemical discharges are widespread<\/b><span style=\"font-weight: 400;\">: Our team identified 100+ hazardous chemicals discharged from non-domestic sources into sewers.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Treatment technologies exist<\/b><span style=\"font-weight: 400;\">: We found that several technologies could potentially remove these chemicals before they reach the sewer.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Evidence gaps persist<\/b><span style=\"font-weight: 400;\">: Limited real-world performance data is available; trials are needed to validate effectiveness.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Pre-treatment likely required<\/b><span style=\"font-weight: 400;\">: Most technologies need additional steps (e.g., for TSS, COD, TOC, or pH adjustment), which adds complexity, cost, and footprint.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Waste management challenge<\/b><span style=\"font-weight: 400;\">: As most treatment processes generate waste (sludge\/by-products), this poses disposal requirements.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Case studies show benefits<\/b><span style=\"font-weight: 400;\">: Our team found that point-of-entry treatment has reduced chemical levels in wastewater treatment works effluent.<\/span><\/li>\n<\/ul>\n<p><b>Key contact:<\/b><\/p>\n<p><span style=\"font-weight: 400;\">For enquiries and further information, please contact Dr Naiara Fonseca, Principal Consultant at Isle Utilities.<\/span><\/p>","protected":false},"excerpt":{"rendered":"<p>Isle developed a technical report on sewer-entry treatment technologies for low-volume hazardous chemicals, providing insights to guide informed decisions.<\/p>","protected":false},"featured_media":16616,"template":"","meta":{"_acf_changed":false,"footnotes":"","_members_access_role":[],"_members_access_error":""},"categories":[43],"case-studies":[],"class_list":["post-16615","case-study","type-case-study","status-publish","has-post-thumbnail","hentry","category-solve-the-now"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Preventing Hazardous 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