Sewage treatment apparatus and method thereof
First Claim
1. A sewage treatment apparatus, comprising:
- a disinfection facility which has a disinfection tank for disinfecting sewage by means of chlorine or ultraviolet;
a bromine sewage treatment device which disinfects sewage by means of a bromine-based disinfectant; and
a branching device which has an inlet port, outlet port 1, and outlet port 2, and branches sewage flowing into the inlet port into the outlet port 1 and outlet port 2, the branching device allowing the entire amount of the inflow sewage to flow into the outlet port 1 when the amount of the inflow sewage to the inlet port is equal to or lower than a predetermined value, allowing an amount of sewage of the predetermined value to flow into the outlet port 1 when the amount of inflow sewage is higher than the predetermined value, and allowing an amount of sewage, which is obtained by removing the amount of sewage of the predetermined value from the amount of the inflow sewage, to flow into the outlet port 2, wherein the outlet port 1 of the branching device is connected to a sewage introduction portion of the disinfection facility, and the outlet port 2 of the branching device is connected to a sewage introduction portion of the bromine sewage treatment device.
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Abstract
The present invention provides a sewer system having a means to quickly disinfect rainwater-incorporated sewage and pollutant-incorporated rainwater, that is, combined sewer overflow (CSO), separated sewer rainwater overflow and separated sanitary sewer overflow before being discharged to public water body without passing through a sewage treatment plant, and a method and an apparatus for disinfecting rainwater-incorporated sewage and pollutant-incorporated rainwater. One embodiment of the present invention is a sewer system wherein when sewage flows into a sewage treatment plant in an amount of not more than the treatment capacity of the sewage treatment plant, the sewage is subjected to predetermined treatments in the sewage treatment plant, and then disinfection with a chlorine-based disinfectant, and thereafter discharged to public water body, and when sewage containing rainwater in an amount of more than the treatment capacity of the sewage treatment plant flows or may flow into the sewage treatment plant by a big rainfall, the amount of the rainwater-incorporated sewage of more than the treatment capacity is branched in sewer stormwater overflow removing facilities of a sewer, then disinfected with a bromine-based disinfectant, and thereafter discharged to public water body while the rainwater-incorporated sewage in an amount within the treatment capacity of the sewage treatment plant is subjected to predetermined treatments in the sewage treatment plant, then disinfected with a chlorine-based disinfectant, and thereafter discharged to public water body.
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Citations
35 Claims
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1. A sewage treatment apparatus, comprising:
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a disinfection facility which has a disinfection tank for disinfecting sewage by means of chlorine or ultraviolet;
a bromine sewage treatment device which disinfects sewage by means of a bromine-based disinfectant; and
a branching device which has an inlet port, outlet port 1, and outlet port 2, and branches sewage flowing into the inlet port into the outlet port 1 and outlet port 2, the branching device allowing the entire amount of the inflow sewage to flow into the outlet port 1 when the amount of the inflow sewage to the inlet port is equal to or lower than a predetermined value, allowing an amount of sewage of the predetermined value to flow into the outlet port 1 when the amount of inflow sewage is higher than the predetermined value, and allowing an amount of sewage, which is obtained by removing the amount of sewage of the predetermined value from the amount of the inflow sewage, to flow into the outlet port 2, wherein the outlet port 1 of the branching device is connected to a sewage introduction portion of the disinfection facility, and the outlet port 2 of the branching device is connected to a sewage introduction portion of the bromine sewage treatment device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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12. A sewage treatment apparatus in a sewage treatment plant, the sewage treatment apparatus comprising:
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a primary sedimentation tank;
disinfection equipment which has a disinfection tank for disinfecting sewage by means of chlorine or ultraviolet;
a bromine sewage treatment device which disinfects sewage by means of a bromine-based disinfectant; and
a branching device which has an inlet port, outlet port 1, and outlet port 2, and receives water flowing out of the primary sedimentation tank, at the inlet port, to branch the water into the outlet port 1 and outlet port 2, the branching device allowing the entire amount of inflow water to flow into the outlet port 1 when the inflow water into the branching device is equal to or less than a predetermined value, allowing an amount of water with the predetermined value to flow into the outlet port 1 when the amount of the inflow water is higher than the predetermined value, and allowing an amount of water, which is obtained by removing the amount of water with the predetermined value from the amount of the inflow water, to flow into the outlet port 2, wherein the outlet port 1 of the branching device is connected to a sewage introduction portion of the disinfection facility, and the outlet port 2 of the branching device is connected to a sewage introduction portion of the bromine sewage treatment device.
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13. A sewage treatment apparatus in a sewage treatment plant, the sewage treatment apparatus comprising:
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a primary sedimentation tank;
an aeration tank;
a final sedimentation tank;
disinfection equipment which has a disinfection tank for disinfecting sewage by means of chlorine or ultraviolet;
a bromine sewage treatment device which disinfects sewage by means of a bromine-based disinfectant; and
a branching device which has an inlet port, outlet port 1, and outlet port 2, and receives water flowing out of the primary sedimentation tank, at the inlet port, to branch the water into the outlet port 1 and outlet port 2, the branching device allowing the entire amount of inflow water to flow into the outlet port 1 when the inflow water is equal to or less than a predetermined value, allowing an amount of water with the predetermined value to flow into the outlet port 1 when the amount of the inflow water is higher than the predetermined value, and allowing an amount of water, which is obtained by removing the amount of water with the predetermined value from the amount of the inflow water, to flow into the outlet port 2, wherein a sewage introduction portion of the primary sedimentation tank is connected to the introduction portion of the sewage treatment apparatus, an outlet port of the primary sedimentation tank is connected to the inlet port of the branching device, the outlet port 1 of the branching device is connected to a sewage introduction portion of the aeration tank, an outlet port of the aeration tank is connected to a sewage introduction portion of the final sedimentation tank, an outlet port of the final sedimentation tank is connected to a sewage introduction portion of the disinfection equipment, and the outlet port 2 of the branching device is connected to a sewage introduction portion of the bromine sewage treatment device.
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- 23. A method for performing disinfection treatment on sewage, comprising the steps of disinfecting the entire amount of inflow sewage by means of chlorine or ultraviolet when an amount of the inflow sewage is equal to or lower than a predetermined value, disinfecting an amount of sewage of the predetermined value by means of the chlorine or ultraviolet when the amount of the inflow sewage is higher than the predetermined value, and at the same time disinfecting an amount of sewage, which is obtained by removing the amount of sewage of the predetermined value from the amount of the inflow sewage, by means of a bromine-based disinfectant.
Specification