Equipment for treating waste water
First Claim
1. An equipment for treating waste water comprising:
- (a) a source of waste water including organic substances;
(b) an anaerobic tank having a flow path having an inlet connected to the waste water source for having a supply of the waste water from the waste water source, the flow path having an outlet;
(c) means for supplying anaerobic bacteria into the flow path at a first position for anaerobically treating the waste water;
(d) at least one biological contact zone provided in the flow path at a second position downstream of the first position;
(e) a bacteria culture tank for culturing methane bacteria;
(f) means for supplying the cultured methane bacteria from the bacteria culture tank to the at least one biological contact zone to further anaerobically treat the waste water passing the at least one biological contact zone;
(g) an aerobic tank connected to the outlet of the flow path of the anaerobic tank for having a supply of the waste water from the anaerobic tank, the aerobic tank containing activated sludge including aerobic bacteria for aerobically treating the waste water discharged from the anaerobic tank; and
(h) means for discharging the treated waste water from the aerobic tank.
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Accused Products
Abstract
In the method of treating high-concentration organic waste water in dependence upon microorganism, waste water is first anaerobically treated in an anaerobic operation tank in dependence upon anaerobic bacteria groups and methane bacteria groups; in the second step, the waste water is further aerobically treated repeatedly in an aerobic operation tank, and an organic substance as hydrogen donor (raw waste water) is supplied to the aerobic operation tank before the succeeding aerobic treatment; in the third step, ozone treatment is effected to decolor the treated water. Two speed bacteria culture tanks for sludge bacteria and methane bacteria are provided separately to supply bacteria to the anaerobic operation tank for providing further reliable decomposition and denitrification of organic substance into methane and nitrogen gasses.
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Citations
14 Claims
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1. An equipment for treating waste water comprising:
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(a) a source of waste water including organic substances; (b) an anaerobic tank having a flow path having an inlet connected to the waste water source for having a supply of the waste water from the waste water source, the flow path having an outlet; (c) means for supplying anaerobic bacteria into the flow path at a first position for anaerobically treating the waste water; (d) at least one biological contact zone provided in the flow path at a second position downstream of the first position; (e) a bacteria culture tank for culturing methane bacteria; (f) means for supplying the cultured methane bacteria from the bacteria culture tank to the at least one biological contact zone to further anaerobically treat the waste water passing the at least one biological contact zone; (g) an aerobic tank connected to the outlet of the flow path of the anaerobic tank for having a supply of the waste water from the anaerobic tank, the aerobic tank containing activated sludge including aerobic bacteria for aerobically treating the waste water discharged from the anaerobic tank; and (h) means for discharging the treated waste water from the aerobic tank. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification