This proceedings book of ICES 2023 presents the most recent studies on environmental sciences and environmental sustainability, which contributes to the resolution of environmental issues (air pollution, water pollution, soil pollution, noise pollution, thermal pollution, radioactive pollution, light pollution, and global warming). The discharge of environmental pollutants from industrial, commercial, residential, and sensible locations must be handled with care, since it may harm the air, water, and land if not adequately treated. As a result of the enormous volume of wastewater and environmental pollution generated daily, the majority of designs and developments of wastewater technologies and environmental treatment were unable to handle the load. This is a threat to sustainable growth, and it must be resolved in a precise, dependable, urgent, and timely manner. Sustainable creative and technical transfer approaches that can be utilized for supporting, operationalizing, and providingsustainable wastewater and environmental treatment solutions are of interest to us. The authors hope that the book covers the possible spectrum of wastewater technologies and environmental treatment up to a high level of environmental protection, clean and green management lessons, identify the barriers to transformational change, and then inform the agenda and initiatives for sustainable development. ICES 2023 is devoted to wastewater technology and environmental treatment, with an emphasis on environmental protection at the highest level. ICES 2023 aims to disseminate current knowledge and sustainable development, share experience and lessons gained, and generate conversation and reflection in order to promote a paradigm shift that is sustainable. With the distribution of sustainable wastewater technology and environmental treatment, the ultimate goal is to bring revolutionary change to sustainable development.