[{"command":"openDialog","selector":"#drupal-modal","settings":null,"data":"\u003Cdiv id=\u0022republish_modal_form\u0022\u003E\u003Cform class=\u0022modal-form-example-modal-form ecl-form\u0022 data-drupal-selector=\u0022modal-form-example-modal-form\u0022 action=\u0022\/en\/article\/modal\/11372\u0022 method=\u0022post\u0022 id=\u0022modal-form-example-modal-form\u0022 accept-charset=\u0022UTF-8\u0022\u003E\u003Cp\u003EHorizon articles can be republished for free under the Creative Commons Attribution 4.0 International (CC BY 4.0) licence.\u003C\/p\u003E\n \u003Cp\u003EYou must give appropriate credit. We ask you to do this by:\u003Cbr \/\u003E\n 1) Using the original journalist\u0027s byline\u003Cbr \/\u003E\n 2) Linking back to our original story\u003Cbr \/\u003E\n 3) Using the following text in the footer: This article was originally published in \u003Ca href=\u0027#\u0027\u003EHorizon, the EU Research and Innovation magazine\u003C\/a\u003E\u003C\/p\u003E\n \u003Cp\u003ESee our full republication guidelines \u003Ca href=\u0027\/horizon-magazine\/republish-our-stories\u0027\u003Ehere\u003C\/a\u003E\u003C\/p\u003E\n \u003Cp\u003EHTML for this article, including the attribution and page view counter, is below:\u003C\/p\u003E\u003Cdiv class=\u0022js-form-item form-item js-form-type-textarea form-item-body-content js-form-item-body-content ecl-form-group ecl-form-group--text-area form-no-label ecl-u-mv-m\u0022\u003E\n \n\u003Cdiv\u003E\n \u003Ctextarea data-drupal-selector=\u0022edit-body-content\u0022 aria-describedby=\u0022edit-body-content--description\u0022 id=\u0022edit-body-content\u0022 name=\u0022body_content\u0022 rows=\u00225\u0022 cols=\u002260\u0022 class=\u0022form-textarea ecl-text-area\u0022\u003E\u003Ch2\u003EFrom drain to gain: the hidden treasures in wastewater \u003C\/h2\u003E\u003Cp\u003EFor decades, most of the wastewater from the Mahou San Miguel brewery in the northeastern Spanish city of Lleida was flushed down the drain.\u0026nbsp;\u003C\/p\u003E\u003Cp\u003ENow the effluent is being used to generate power and heat for the brewery, which is taking part in a research project that received EU funding to make wastewater a reusable resource.\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EBits for biogas\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003EMahou San Miguel, Spain\u2019s top beer producer, is using water to clean the Lleida brewery as well as to wash out fermentation tanks and old bottles before recycling and refilling them.\u0026nbsp;\u003C\/p\u003E\u003Cp\u003EAs a result, the wastewater is full of organic matter \u2013 so-called biomass \u2013 like old beer and bits of hops and grains that can be turned into biogas.\u003C\/p\u003E\u003Cp\u003E\u2018You have energy in the wastewater in the form of biomass or heat, which you can recover,\u2019 said Dr Anne Kleyb\u00f6cker, a researcher at the KWB water-research centre in Berlin, Germany.\u003C\/p\u003E\u003Cp\u003EShe said industrial wastewater also contains other materials such as nutrients that could be economically valuable as long as ways can be found to extract them.\u003C\/p\u003E\u003Cp\u003EKleyb\u00f6cker helps lead the EU-backed project, which brings together research organisations, universities and businesses from EU countries that also include, among others, Denmark, France, Greece and Italy. Outside the EU, participants come from Israel, Norway and the UK.\u0026nbsp;\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EOn-the-ground action\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003ECalled\u0026nbsp;\u003Ca href=\u0022https:\/\/cordis.europa.eu\/project\/id\/869318\u0022\u003EULTIMATE\u003C\/a\u003E, the 53-month project is coordinated by a Dutch water-research institute called KWR and is scheduled to run through October 2024.\u0026nbsp;\u003C\/p\u003E\u003Cp\u003EIt centres on pilot plants in the food-and-drink, petrochemical and biotechnology industries. The goal is to show the feasibility of laboratory-developed technologies at scale for extracting materials from wastewater, according to Dr Gerard van den Berg, a project manager and team leader at KWR.\u003C\/p\u003E\u003Cp\u003EAt a citrus-fruit processing centre in Greece and an olive-oil producer in Israel, pilot plants are extracting plant compounds such as polyphenols and antioxidants that can be used as dyes, food additives and supplements and chemical compounds for manufacturing.\u003C\/p\u003E\u003Cp\u003E\u003Cblockquote class=\u0022tw-text-center tw-text-blue tw-font-bold tw-text-2xl lg:tw-w-1\/2 tw-border-2 tw-border-blue tw-p-12 tw-my-8 lg:tw-m-12 lg:tw--ml-16 tw-float-left\u0022\u003E\n \u003Cspan class=\u0022tw-text-5xl tw-rotate-180\u0022\u003E\u201c\u003C\/span\u003E\n \u003Cp class=\u0022tw-font-serif tw-italic\u0022\u003EBefore we start to recover something, we already know who needs it.\u003C\/p\u003E\n \u003Cfooter\u003E\n \u003Ccite class=\u0022tw-not-italic tw-font-normal tw-text-sm tw-text-black\u0022\u003EDr Anne Kleyb\u00f6cker, ULTIMATE\u003C\/cite\u003E\n \u003C\/footer\u003E\n\u003C\/blockquote\u003E\n\u003C\/p\u003E\u003Cp\u003EFarther north, a chemical installation in France is exploring whether chemicals and metals such as sulphur and molybdenum can be recovered from water used to wash gases generated by the incineration of waste.\u003C\/p\u003E\u003Cp\u003EEven farther north is a demonstration plant at the Glenmorangie whisky distillery in the Scottish Highlands.\u003C\/p\u003E\u003Cp\u003EIt extracts ammonia and phosphorus to use as fertilisers on local barley fields and harvests heat for reuse in this process from a reactor producing biogas from wastewater.\u0026nbsp;\u003C\/p\u003E\u003Cp\u003EThe wastewater is also purified so it can be reused to clean the distillery.\u003C\/p\u003E\u003Cp\u003EThe cost-effectiveness of these activities varies and in some cases more work is needed to strengthen the economic benefits. In any case, the underlying importance of the actions is that they point the way towards a new and more sustainable method of industrial operations. \u0026nbsp;\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EIndustrial bonds\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003EKleyb\u00f6cker said the project is pursuing \u2018industrial symbiosis\u2019 \u2013 the notion of different industries exchanging their waste products.\u003C\/p\u003E\u003Cp\u003E\u2018Before we start to recover something, we already know who needs it,\u2019 she said.\u0026nbsp;\u003C\/p\u003E\u003Cp\u003EEurope has plenty of potential in this area because European countries have many diverse industries situated relatively close to one other, facilitating logistical questions, according to Kleyb\u00f6cker.\u003C\/p\u003E\u003Cp\u003EUltimately, however, the most efficient expression of this whole \u201ccircular economy\u201d idea is when businesses extract and reuse materials from their own waste \u2013 as Mahou San Miguel is doing in Lleida, which is located about 150 kilometres west of Barcelona.\u003C\/p\u003E\u003Cp\u003EThe use of biogas produced from the brewery\u2019s waste to generate electricity and heat for the site has been so successful that the company is expanding the bioreactor.\u0026nbsp;\u003C\/p\u003E\u003Cp\u003EThis will include a step tested under ULTIMATE to improve biogas production by encouraging the growth of a different type of microorganism \u2013 electroactive ones.\u0026nbsp;\u003C\/p\u003E\u003Cp\u003EAt present, around 2% of the energy needs of the brewery can be covered by the biogas system. In future, this share could rise to about 6%.\u0026nbsp;\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EMaking it all work\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003EBeyond the technical challenges to water reuse lie organisational, regulatory, economic and social hurdles being tackled by a separate EU-funded project.\u003C\/p\u003E\u003Cp\u003ECalled \u003Ca href=\u0022https:\/\/cordis.europa.eu\/project\/id\/869283\u0022\u003EWIDER UPTAKE\u003C\/a\u003E, it runs for four and a half years through October 2024. The project is working on a roadmap for widespread wastewater reuse and resource recovery.\u003C\/p\u003E\u003Cp\u003E\u2018There are a lot of technical solutions out there, but that doesn\u2019t help you if there is no value chain downstream of the treatment plant,\u2019 said Dr Herman Helness, a senior scientist and water-management expert at Norwegian research organisation SINTEF.\u003C\/p\u003E\u003Cp\u003EHe co-leads WIDER UPTAKE, which is piloting solutions at five demonstration sites. Four of the sites are in European countries \u2013 the Czech Republic, Italy, the Netherlands and Norway \u2013 and one is in Ghana.\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EWater check\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003EIn the Czech capital Prague, the project is investigating using treated wastewater that is usually pumped into the Vltava River to irrigate parks and other green spaces in the city.\u003C\/p\u003E\u003Cp\u003EThe idea hit a regulatory snag because the Czech Republic has opted against following non-binding EU minimum standards on water reuse for irrigation, according to Helness.\u003C\/p\u003E\u003Cp\u003E\u003Cblockquote class=\u0022tw-text-center tw-text-blue tw-font-bold tw-text-2xl lg:tw-w-1\/2 tw-border-2 tw-border-blue tw-p-12 tw-my-8 lg:tw-m-12 lg:tw--ml-16 tw-float-left\u0022\u003E\n \u003Cspan class=\u0022tw-text-5xl tw-rotate-180\u0022\u003E\u201c\u003C\/span\u003E\n \u003Cp class=\u0022tw-font-serif tw-italic\u0022\u003EThere are a lot of technical solutions out there, but that doesn\u2019t help you if there is no value chain downstream.\u003C\/p\u003E\n \u003Cfooter\u003E\n \u003Ccite class=\u0022tw-not-italic tw-font-normal tw-text-sm tw-text-black\u0022\u003EDr Herman Helness, WIDER UPTAKE\u003C\/cite\u003E\n \u003C\/footer\u003E\n\u003C\/blockquote\u003E\n\u003C\/p\u003E\u003Cp\u003EThe result is a Czech legal void that prevents the wastewater from being used for irrigation.\u003C\/p\u003E\u003Cp\u003EThe researchers are seeking to show that it is safe to irrigate green spaces with this grade of wastewater.\u0026nbsp;\u003C\/p\u003E\u003Cp\u003EThe pilot scheme has been testing the treated wastewater on various plants and examining the effects it has on their growth as well as on the accumulation of chemicals in the plants and the surrounding soil.\u0026nbsp;\u003C\/p\u003E\u003Cp\u003EThree variations of the wastewater are used and the outcomes compared: one straight from the treatment plant, another that has gone through an additional nanofiltration treatment and a third that has been nano-filtered and undergone an ultraviolet disinfectant process.\u003C\/p\u003E\u003Cp\u003ESo far, tests have suggested that all three are safe for irrigating plants and flowerbeds, according to Helness.\u0026nbsp;\u003C\/p\u003E\u003Cp\u003EThe hope of the researchers is that this evidence can be used to develop minimum irrigation standards for the Czech Republic.\u0026nbsp;\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EBranching out\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003EWIDER UPTAKE is also exploring the use of wastewater for agricultural irrigation in Italy and Ghana.\u0026nbsp;\u003C\/p\u003E\u003Cp\u003EIn Norway, the project is examining the recovery of fertilisers and soil improvers from wastewater.\u003C\/p\u003E\u003Cp\u003EAnd in the Dutch capital Amsterdam, the researchers are extracting minerals and plant fibres from wastewater to make a bio-based composite material that can be used for products such as park benches and building cladding.\u0026nbsp;\u003C\/p\u003E\u003Cp\u003EHelness cited a need to alter some local perceptions about the opportunities presented by such activities, saying occasional evidence of bureaucratic reluctance to change practices has emerged during the project.\u0026nbsp;\u003C\/p\u003E\u003Cp\u003E\u2018You need to overcome barriers not only in regulations but also in acceptance,\u2019 he said.\u003C\/p\u003E\u003Cp\u003E\u003Cem\u003EResearch in this article was funded by the EU\u2019s Horizon Programme. The views of the interviewees don\u2019t necessarily reflect those of the European Commission. 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