TECHNOLOGY FOCUS - ENVIRONMENT - Preferred Process: In the process: clarifiers are used to remove excess levels of organic sludge that may clog up and make light penetration into the streams more difficult before certain sewage waste streams are sent to the algae growing part of the process; four bio-reactors are used for rapidly growing algae and coupled to using extraction means; moist algae is transferred to and stored in one of two storage bins that receive water for flooding rolled algae and with UV lights to further aid in killing rolled algae in the bins; and algal cells are compressed by heavy rollers to destroy the algae cell walls to release the oils and fats inside the cells of the algae. The algae are grown in a bio-reactor having a raceway that promotes recycling of nutrients and allows time for more algae growth to occur. The process further comprises seeding different strains of algae into any incoming stream of wastes to obtain a best proportion and mix of algae strains for those waste streams. The sewage waste streams are continuously received and processed for obtaining a bio-diesel fuel and fertilizer and/or animal feed. The air containing carbon dioxide is injected at the bottom of the raceway in the bio-reactor. Preferred Components: The raceway of bio-reactor is coupled to receive either ambient air containing oxygen or combustion flue gases containing carbon dioxide which is bubbled through the mixture in the bio-reactor thus reducing the carbon dioxide in the combustion flue gases and adding more nutrients for algae growth. The raceway of the bio-reactor includes two types of screens where algae can attach and grow on as well as for separating and removing mature algal sludge slumps and strands from the raceway. The two types of screens is slowly driven along the raceway to move algae from the bottom of the raceway to the top and then out of liquid in the raceway at an incline of 30-70 degrees so algae can drain excess fluids before the removed algae are transferred to an algae storage bin. The top of the bio-reactors as well as other tanks have translucent tops to receive sun light so that photosynthesis can continue the algae growth process. The bio-reactor includes one continuously moving screen and several fixed but easily removable screens for picking up algal slumps and strands of algae located in the bio-reactor. The traveling screen continuously moves on tracks along a circular inclined path in the bio-reactor. The compressed algae in the bins are flooded with recycled water. The flooded and compressed algae are sent to oil/water separators to separate the oils and fats and the water fraction from each other. ACTIVITY - Fertilizer.    MECHANISM OF ACTION - None given.    EXAMPLE - No suitable example given.