Apparatus for anaerobic purification of waste water

Apparatus for the anaerobic purification of waste water with an anaerobic sludge material, comprising:

• (a) an elongated vertical reactor chamber having means for receiving waste water and sludge material at the bottom of said chamber;
• (b) means for supplying waste water to the bottom of said reactor chamber;
• (c) baffle means disposed within said reactor chamber for mixing sludge material with said waste water;
• (d) a sludge-wastewater separator disposed above said reactor chamber for receiving the mixed sludge material and waste water;
• (e) means within said sludge-wastewater separator for separating said sludge from said water after said water is purified;
• (f) a gas-sludgewater separator disposed above said sludge-waste water separator for receiving a residue of said sludge and waste water from said sludge-wastewater separator;
• (g) means within said gas-sludgewater separator for separating gas from said sludge-wastewater;
• (h) two super-imposed conical gas separator disposed within said reactor chamber above said baffle means for collecting gas formed in said reactor chamber and for discharging said gas with sludgewater material into said gas-sludgewater separator, said gas separators being opened at their upper side so that said reactor chamber contents can move upwardly therein;
• and
• (i) a central vertical tube having an opening in said gas-sludgewater separator for receiving sludge water and returning it to said reactor chamber through an outlet opening into said chamber for mixing with waste water supplied to the bottom of said chamber.