History of environmental engineering science, visionary tools and their applications are moving towards a newer visionary scientific generation of science and technology. Zero discharge norms, environmental sustainability and the immense progress of engineering has brought human civilization from the brink of an immediate and imminent environmental disaster. These disasters are due to the tremendous industrialization of human civilization. Thus in such an encompassing disaster and a critical juncture of history and time , importance of environmental engineering science has predominant importance. The domain of environmental engineering is moving towards a new generation of scientific determination and scientific steadfastness. The challenges which lie before in the path of endeavour are crucial to scientific advancement. Environmental regulations and rigid restrictions stands today as an important issue in the path towards scientific progress and scientific pursuit. Here stands today the contribution of cutting edge technology and the vision to excel. Wastewater treatment and wastewater degradation stands today as a primordial issue in the history of mankind in the present day civilization. Cutting edge technologies such as application of bubble column reactor for wastewater treatment has an unquestioned hope and unquestioned vision. Bubble column reactors has become an effective tool in giving the environmental engineer and environmental scientist the standards and the basis of better wastewater degradation. Scientific advancement has immense answers and in such a crucial juncture of universal environmental sustainability, the world of unknown opens up new vistas and new doors of innovation in the path towards progress. This treatise emboldens the answers to immense questions of wastewater treatment, advanced oxidation processes and application of bubble column reactor.