The generation, management and treatment of polluted streams involve different actors including citizens, utilities, treatment facilities, industrial sites etc.., the interconnections among all the interested entities are fundamental to allow waste and resources to be treated and used in a more sustainable way, contributing to the creation of a circular economy. In this context, technical solutions are proposed for a symbiotic management not only of waste and wastewater but also of recovered water, materials and by-products. Starting from municipal wastewater production, sewer network modelling allowed to propose solutions for increasing bathing water quality, reduce CSO impacts, and get data for the development of early warning system for seawater intrusion. Moving to industrial wastewater, pharmaceutical wastewater, industrial streams from agro-food companies and landfill leachate were characterized and different treatment options were tested at both laboratory and pilot scale. In addition, streams characterized by high organic loads were studied for the possible recovery of VFA and PHA. Industries are not only producers of wastewater, but also consumers of water. Different treatment options involving also the reuse of industrial by-products, were studied to allow industrial water reuse. Hydrochar produced from sewage sludge was tested as an adsorbent for organic matter in both laboratory and pilot scale experiments. Out of Specification (OoS) Soda Solvay and a partially cooked limestone were tested in softening-coagulation-flocculation processes to remove COD, Calcium and Magnesium. Finally community composting was investigated for the treatment of organic waste with the installation of two composters of 20 t/y in Potenza municipality. To conclude, legal risk analysis was performed for water reuse and cost-Benefit Analysis (CBA), Social Life Cycle Assessment (S-LCA) and Social Readiness Level (SRL) methods were applied addressing resource recovery solutions.
La generazione, gestione e trattamento dei flussi inquinati coinvolge diversi attori, tra cui cittadini, utilities, impianti, siti industriali ecc., le interconnessioni tra tutti gli enti sono fondamentali per consentire il trattamento e l’utilizzo di rifiuti e risorse in modo sostenibile, contribuendo alla creazione di un'economia circolare. Il presente lavoro propone soluzioni tecniche per una gestione simbiotica non solo dei rifiuti e delle acque reflue ma anche delle acque recuperate, dei materiali e dei sottoprodotti. Partendo dalle acque reflue urbane, la modellazione della rete fognaria ha consentito di proporre soluzioni per aumentare la qualità delle acque di balneazione, ridurre l’impatto dei flussi scolmati ed ottenere dati necessari allo sviluppo di “early warning system” per l'intrusione di acqua di mare. Passando alle acque reflue industriali, si sono analizzati flussi prodotti da industrie farmaceutiche, aziende agro-alimentari e percolato proponendo soluzioni di trattamento testate sia scala di laboratorio che pilota. Rifiuti liquidi con elevato carico organico sono stati studiati per il recupero di VFA e PHA. Considerando l’elevato consumo di acqua del mondo industriale, si sono analizzate anche opzioni di trattamento per il riutilizzo delle acque reflue urbane, includendo l’uso di sottoprodotti. L’Hydrochar prodotto da fanghi di depurazione è stato testato come adsorbente in sperimentazioni sia in scala di laboratorio che pilota, la Soda Solvay fuori specifica e un calcare parzialmente cotto sono stati testati in processi di addolcimento-coagulazione-flocculazione. Infine, il compostaggio di comunità è stato testato per il trattamento dei rifiuti organici tramite l’installazione di due compostiere. In conclusione, un'analisi del rischio legale è stata realizzata per il riutilizzo dell'acqua e l’analisi costi-benefici (CBA), la Social Life Cycle Assessment (S-LCA) e il Social Readiness Level (SRL) sono stati applicati per il recupero di risorse.
Systemic and tailored solutions for urban-industrial-rural symbiosis for the valorisation of urban and industrial wastewater and municipal organic waste / Bruni, Cecilia. - (2023 Mar 17).
Systemic and tailored solutions for urban-industrial-rural symbiosis for the valorisation of urban and industrial wastewater and municipal organic waste
BRUNI, CECILIA
2023-03-17
Abstract
The generation, management and treatment of polluted streams involve different actors including citizens, utilities, treatment facilities, industrial sites etc.., the interconnections among all the interested entities are fundamental to allow waste and resources to be treated and used in a more sustainable way, contributing to the creation of a circular economy. In this context, technical solutions are proposed for a symbiotic management not only of waste and wastewater but also of recovered water, materials and by-products. Starting from municipal wastewater production, sewer network modelling allowed to propose solutions for increasing bathing water quality, reduce CSO impacts, and get data for the development of early warning system for seawater intrusion. Moving to industrial wastewater, pharmaceutical wastewater, industrial streams from agro-food companies and landfill leachate were characterized and different treatment options were tested at both laboratory and pilot scale. In addition, streams characterized by high organic loads were studied for the possible recovery of VFA and PHA. Industries are not only producers of wastewater, but also consumers of water. Different treatment options involving also the reuse of industrial by-products, were studied to allow industrial water reuse. Hydrochar produced from sewage sludge was tested as an adsorbent for organic matter in both laboratory and pilot scale experiments. Out of Specification (OoS) Soda Solvay and a partially cooked limestone were tested in softening-coagulation-flocculation processes to remove COD, Calcium and Magnesium. Finally community composting was investigated for the treatment of organic waste with the installation of two composters of 20 t/y in Potenza municipality. To conclude, legal risk analysis was performed for water reuse and cost-Benefit Analysis (CBA), Social Life Cycle Assessment (S-LCA) and Social Readiness Level (SRL) methods were applied addressing resource recovery solutions.File | Dimensione | Formato | |
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