The present invention relates to an environmentally friendly sewage treatment system, and more specifically relates to an environmentally friendly sewage treatment system which is able to discharge a certain size of ground food waste through an additional environmental friendly process such as microorganism treatment while preventing introduction of malodor generated in a first septic tank through a sewer pipe in a process of discharging the food waste ground by a disposer installed in a sink of each household with waste water through the sewer pipe.
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