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All the Septic tank systems or septic tanks are aerated since there are 3 types of bacteria in the septic system processing the waste. They are aerobic, obligate anaerobic and facultative. Aerobic bacteria require compressed oxygen or air and are more competitive. However, aerobic bacteria are very few in the http://andrew-scott5.blogspot.rs/2018/02/what-are-various-steps-to-waste-water.html


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