3. Primary treatment. The wastewater still contains organic solid matter-or human waste. The next stage is to seperate this from the water, and to do this, we put the wastewater into large settlement tanks, which causes the solids to sink to the bottom of the tank. We call these settled solids âsludgeâ.
Between 2004 and 2014, the share of STEM-related bachelor's degrees earned by women decreased in all seven discipline areas: engineering; computer science; earth, atmospheric and ocean sciences; physical sciences; mathematics; biological and agricultural sciences; and social sciences and psychology.
What's a STEM Career? STEM Careers are careers in Science, Technology, Engineering, Math and Medicine -- the careers that will be in demand in the future, and will create the economy of tomorrow. Acoustics. Actuarial Science. Aeronautical/Aerospace Engineering Technology/Technician. Aerospace, Aeronautical and Astronautical Engineering.