text: It has not been discovered as of yet, where 100% of the sludge is in granular form. Most aerobic granular sludge has 50% and the remaining composition is dense microorganism. Overall, wastewater treatment technology is new and it will be difficult to replace conventional activated sludge processes for the usage of wastewater treatment. Converting an activating sludge to an aerobic granular is very challenging and would need lots of research with grant funds. Therefore, aerobic granulation research needs to be composed to formulate the best mechanisms for wastewater treatment.