Therefore, microalgae-based wastewater treatment systems should be performed in low land-cost areas where sunlight and warm temperatures. The potential microalgal wastewater process was shown as the simplified process flow diagram envisioned for typical wastewater treatment, algal wastewater treatment with flue gas mitigation and production of various algal biomass products. The integrated process of using wastewater for microalgae production can be shown as the flow diagram envisioned for typical wastewater treatment, microalgal wastewater treatment with flue gas mitigation, and production of various algal biomass products.
The typical wastewater treatment can be simply organized into three steps of solid–liquid separation, horizontal anaerobic fermentation and an activated sludge process in aerobic treatment.