A septic tank is a device for treating feces and filtering out sediments. Its principle is that solid matter decomposes at the bottom of the tank, while the water-soluble substances rise to the top and flow out through the pipes, preventing blockages. This allows sufficient time for the solid matter (such as feces and garbage) to undergo hydrolysis.

A small treatment structure for separating and sedimenting domestic wastewater and anaerobic digestion of sludge.

A septic tank is a device for treating feces and filtering out sediments. Its principle is that solid matter decomposes at the bottom of the tank, while the liquid matter above flows into the pipes and away, preventing pipe blockages and allowing sufficient time for the solid matter (such as feces and waste) to hydrolyze.

A small treatment structure for separating and sedimenting domestic wastewater and anaerobic digestion of sludge.