Suchergebnisse

This dissertation aims to find ways to improve environmental and energy performances of three small wastewater treatment plants (WWTP). These WWTP, placed in Sintra municipality, were case studies for the identification of corrective measures and solutions in order to improve their environmental and energy performance. The settings of these three WWTP was obtained by an audit exercise, performed under a specific methodology for small WWTP. After this assessment were proposed corrections and solutions for all identified improvement opportunities. Were also discussed solutions for the treatment of sewage sludge, due to the actual problems resulted by its disposal and to take advantage of its energy valorisation potential. Was presented as case study, a sludge thermal treatment and its energy valorisation by gasification. This specific case study was occurred in a pilot gasification reactor in San Sebastian, Spain. Another theme discussed on this dissertation was the possibility to provide energy autonomy for small and isolated WWTP using renewable energies, in this specific case, wind energy. Was studied the wind availability and pattern, for the region of Magoito, where Magoito WWTP is placed. This study was supported by Wasp software, analysis of meteorological databases for the region and by the collection of data provided by an on-site a meteorological station, placed on Magoito WWTP. The state of the art on wastewater treatment technologies and sludge treatment and valorisation, for small WWTP, was also compiled, as well as an overview of the main Portuguese and European legislation and European policies on this subject.

AbstractWater contamination is a global challenge impacting both the environment and human health with significant economic and social costs. The growing scarcity of usable water resources requires effective treatment of wastewater. In this context, developing cheaper, safer and more efficient wastewater treatment technologies are the need of the hour. One promising approach that several studies have reported success has been the usage of nanomaterials in water and waste water management. The rapid progress of research in nanomaterial sciences has shown their growing potential; however, there has not been a great amount of information available on their implementation. This review focuses on developments in nanotechnology that hold strong potential for wastewater treatment. The review covers key techniques in nanomaterial‐based water treatments including adsorption, filtration and photocatalysis with recent examples showing how to improve their properties and efficiencies according to the need.

Chapter1: Phycoremediation Technology: A Global prospective -- Chapter2: The diatoms: from eutrophic indicators to mitigators -- Chapter3: A review on micropollutants removal by microalgae -- Chapter4: Developing designer microalgae consortia: A suitable approach to sustainable wastewater treatment -- Chapter5: Outdoor Microalgae Cultivation for Wastewater Treatment -- Chapter6: Current state of knowledge on algae mediated remediation of Endocrine Disrupting Chemicals (EDCs) from wastewater -- Chapter7: Bioremediation of municipal sewage using potential microalgae -- Chapter8: Phycoremediation of Petroleum Hydrocarbons Polluted Sites: Application, Challenges and Future Prospects -- Chapter9: Genetic Technologies and Enhancement of Algal Utilization in Wastewater Treatment and Bioremediation -- Chapter10: Potential and Feasibility of the Microalgal system in removal of pharmaceutical compounds from wastewater -- Chapter11: Phycoremediation of persistent organic pollutants from wastewater: Retrospect and prospects -- Chapter12: Feasibility of microalgal technologies in pathogens removal from wastewater -- Chapter13: Remediation of domestic wastewater using algal-bacterial biotechnology -- Chapter14: Phycoremediation of textile waste water: Possibilities and Constraints -- chapter15: Potential and application of Diatoms for industry-specific wastewater treatment -- Chapter16: Feasibility of using bacterial-microalgal consortium for the bioremediation of organic pesticides: Application constraints and future prospects -- Chapter17: Potential of blue-green algae in wastewater treatment -- Chapter18: Photobioreactors for Wastewater Treatment -- Chapter19: Design considerations of algal systems for wastewater treatment -- Chapter20: Phycoremediation of heavy metals from water and wastewater

Chapter1: Phycoremediation of Nutrients and Valorisation of Microalgal Biomass: An Economic Perspective -- Chapter2: Astaxanthin production by microalgae Haematococcus pluvialis through wastewater treatment: waste to resource -- Chapter3: Potential of microalgae for integrated biomass production utilizing CO2 and food industry wastewater -- Chapter4: Microalgae: A biorefinary approach for the treatment of aquaculture wastewater -- Chapter5: Dual role of microalgae in wastewater treatment and biodiesel production -- Chapter6: A Biorefinery From Nannochloropsis spp. utilizing wastewater resources -- Chapter7: Cultivation of microalgae on anaerobically digested agro-industrial wastes and by-products -- Chapter8: Industrial wastewaters based microalgal biorefinery: A dual strategy to remediate waste and produce microalgal bioproducts -- Chapter9: Phyco-remediation of dairy effluents and biomass valorisation: a sustainable approach -- Chapter10: Commercial potential of Phycoremediation of wastewater: A way forward -- Chapter11: Potential biotechnological applications of microalgae grown in wastewater: A holistic approach -- Chapter12: Microalgal biofuels production from industrial and municipal wastewaters -- Chapter13: Potential of microalgae for wastewater treatment and its valorization into added-value products -- Chapter14: Microbial carbon capture cell: Advanced bioelectrochemical system for wastewater treatment, electricity generation and algal biomass production -- Chapter15: Microalgal systems for integrated carbon sequestration from flue gas and wastewater treatment -- Chapter16: Industrial waste water based algal biorefineries: Application constraints and future prospects -- Chapter17: Volarization of nutrient rich urinal wastewater by microalgae for biofuel production -- Chapter18: Comprehensive overview of biomethane production potential of algal biomass cultivated in wastewater -- Chapter19: Role of Microalgal biotechnology in environmental sustainability -- Chapter20; An integrated approach of wastewater mitigation and biomass production for biodiesel using Scenedesmus sp. -- Chapter21: Microalgae and wastewaters: From ecotoxicological interactions to produce a carbohydrate-rich biomass towards biofuel application -- Chapter22: Comprehensive evaluation of High Rate Algal Ponds: wastewater treatment and biomass production

1-Chemical characterization of municipal and industrial wastewater -- 2- Adsorptive remediation of wastewater -- 3-Enzymatic degradation of organic matter in wastewater -- 4-Microbial degradation of wastewater -- 5-Phytoremediation of wastewater -- 6- Advance oxidation techniques for wastewater remediation -- 7-Application of nanomaterials for the remediation of wastewater -- 8-Membrane-based remediation of wastewater -- 9- Gravity separation/sedimentation of wastewater -- 10-Sandbank filtration techniques for wastewater treatment -- 11- Constructed wetlands for the remediation of wastewater -- 12- Sterilization techniques of the wastewater. - 13-Recent advancement in nutrients removal from wastewater -- 14-Recovery and reuse of metals from wastewater -- 15-Legislation and industrial responsibilities for discharge of wastewater in the environment.