Efficient carbon capture, storage, and utilisation (CCSU) is essential for addressing global climate change and achieving sustainable carbon management. Algal technology has emerged as a promising alternative to conventional CCS approaches, offering advantages such as lower energy intensity, decentralised deployment, reduced storage risks, and carbon utilisation through algal biomass valorisation. The approach becomes particularly attractive when integrated with wastewater treatment (WWT), where nutrient-rich wastewater supports high-density algal growth, reducing the cost of CO₂ fixation while simultaneously removing contaminants. This study advances algal CCSU through a desktop assessment and laboratory-scale investigation. Key process elements considered include suitable microalgal species, bioreactor configurations and lighting requirements, CO₂ and nutrient supply modes, and techno-economic performance. A literature-based multi-criteria analysis identified Chlorella vulgaris, Scenedesmus obliquus, and Desmodesmus sp. as the most suitable species for integrated CO₂ fixation and WWT, based on their fixation efficiency, CO₂ tolerance, biomass composition, cultivation feasibility, and ability to remove emerging contaminants. Photobioreactors are recommended over open raceway ponds due to their superior productivity and contamination control, enabling deployment in diverse regions. For the initial study, supplying CO₂ as bicarbonate is favoured over direct gas injection, owing to higher solubility and compatibility with dense cultures. Digestate, a nutrient-rich by-product of anaerobic digestion in WWT, is proposed as the nutrient source. Process optimisation at the laboratory scale will inform the design of a larger demonstration system, providing insights into the techno-economic potential of microalgae-based CCSU. This research aims to demonstrate how algal CCSU can complement existing carbon capture methods while delivering circular economy benefits. The project is supported by CO2Tech and conducted as part of a postgraduate research program.