IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0753641
(2007-05-25)
|
등록번호 |
US-7731850
(2010-06-29)
|
우선권정보 |
KR-10-2006-0047713(2006-05-26) |
발명자
/ 주소 |
- Choi, Hong-Bok
- Lee, Jae-Ki
- Park, Ju-Hyung
- Choi, Eun-Ju
- Kim, Jeong-Rae
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
3 인용 특허 :
6 |
초록
▼
An apparatus and method for treating wastewater are provided. The method for treating wastewater includes: a pre-treatment step of removing impurities contained in high concentration wastewater and crushing the impurities using a crusher; a first aerobic treatment step of supplying wastewater contai
An apparatus and method for treating wastewater are provided. The method for treating wastewater includes: a pre-treatment step of removing impurities contained in high concentration wastewater and crushing the impurities using a crusher; a first aerobic treatment step of supplying wastewater containing organic acids to a first aerobic tank and injecting air to the first aerobic tank to be aerobically treated; an anaerobic treatment step of supplying the wastewater, from which excess organic acids are removed by the aerobic treatment, to an anaerobic tank to be anaerobically treated; a degassing step of supplying the wastewater treated in the aerobic and anaerobic treatment steps to a degassing tank to remove air and gas; and a post-treatment step of precipitating the wastewater aerobically treated using a solid-liquid separation tank, a pressure floatation tank or a precipitation tank.
대표청구항
▼
We claim: 1. A method for treating wastewater comprising: a pre-treatment step of removing impurities contained in high concentration wastewater and crushing the impurities using a crusher; a first aerobic treatment step of supplying wastewater containing organic acids to a first aerobic tank and i
We claim: 1. A method for treating wastewater comprising: a pre-treatment step of removing impurities contained in high concentration wastewater and crushing the impurities using a crusher; a first aerobic treatment step of supplying wastewater containing organic acids to a first aerobic tank and injecting air to the first aerobic tank to be aerobically treated; an anaerobic treatment step of supplying the wastewater, from which excess organic acids are removed by the aerobic treatment, to an anaerobic tank to be anaerobically treated; a degassing step of supplying the wastewater treated in the aerobic and anaerobic treatment steps to a degassing tank to remove air and gas; and a post-treatment step of precipitating the wastewater aerobically treated using a solid-liquid separation tank, a pressure floatation tank or a precipitation tank; and a second aerobic treatment step of repeatedly treating the degassed wastewater in a second aerobic tank after the degassing step. 2. The method of claim 1, wherein each of the first aerobic tank comprises: a wastewater inlet pipe; a gas discharge pipe; a treated water discharge pipe; a reactor into which wastewater and air are introduced by a diffuser; sludge separating means increasing a contact area between wastewater and bubbles to increase dissolved oxygen concentration by dividing the inside of the reactor into up and down multi-stages and separating pollutants according to their concentrations by precipitating sludge using a difference in rise rates of bubbles; and a settling tank, provided on the lower portion of the reaction, for concentrating and discharging precipitated sludge. 3. The method of any one of claims 2, wherein the sludge separating means includes first to third sludge separating means, each of the first to third sludge means comprising: a plate, on which a plurality of through-holes is formed, for dividing the inside of the reactor into up and down regions; and a plurality of fluid transfer pipes, protruding downward from the bottom of the plate to form staying spaces for collecting gas, through which wastewater and air pass, and degrading pollutants by precipitating sludge using a difference in rise rates of bubbles passing through the fluid transfer pipes to increase the concentration of microorganisms, if the introduced gas and wastewater ascend to reach the sludge separating means. 4. The method of claim 3, wherein the plurality of fluid transfer pipes includes at least one selected from the group consisting of a shape of which the upper area is smaller in diameter than the lower area, a shape of which the upper area is greater than the lower area, and a shape of which the upper and lower areas are the same. 5. The method of claim 2, wherein a heat exchanger, to which heat generated from microorganisms is transferred, is further included on the outer surface of the reactor. 6. The method of claim 1, wherein the anaerobic tank comprises: a wastewater inlet pipe; a gas discharge pipe; a treated water discharge pipe; a reactor into which wastewater and air are introduced by a diffuser; sludge separating means increasing a contact area between wastewater and bubbles to increase dissolved oxygen concentration by dividing the inside of the reactor into up and down multi-stages and separating pollutants according to their concentrations by precipitating sludge using a difference in rise rates of bubbles; a settling tank, provided on the lower portion of the reaction, for concentrating and discharging precipitated sludge; and first and second gas transfer pipes, provided on both sides of the reactor, for circulating gas up and down by discharging the gas in the reactor. 7. The method of claim 6, wherein the first gas transfer pipe comprises a first main pipe through which gas is transferred, first auxiliary pipes protruding from the first main pipe to the inside of the reactor and connected to staying spaces of the respective sludge separating means, and a solenoid valve provided in the first main pipe. 8. The method of claim 6, wherein the second gas transfer pipe comprises a second main pipe through which gas is transferred, second auxiliary pipes protruding from the second main pipe to the inside of the reactor and connected to staying spaces of the respective sludge separating means, a pump forcing the gas to circulate, and a valve, provided in the second main pipe, for preventing wastewater from flowing backward. 9. The method of claim 8, wherein the lower end portion of the second main pipe is connected to the air inlet pipe to mix circulated gas and air. 10. The method of claim 6, wherein the uppermost water level of the reactor is set lower than the height of the treated water discharge pipe. 11. The method of claim 6, wherein a heat exchanger, to which heat generated by microorganisms is transferred, is further included on the outer surface of the reactor. 12. The method of claim 1, wherein the degassing tank comprises: a wastewater inlet pipe; a gas discharge pipe; a treated water discharge pipe; a reactor into which wastewater and air are introduced by a diffuser; sludge separating means increasing a contact area between wastewater and bubbles to increase dissolved oxygen concentration by dividing the inside of the reactor into up and down multi-stages and separating pollutants according to their concentrations by precipitating sludge using a difference in rise rates of bubbles; a settling tank, provided on the lower portion of the reaction, for concentrating and discharging precipitated sludge; first and second gas transfer pipes, provided on both sides of the reactor, for circulating gas up and down by discharging the gas in the reactor; and a diffuser, provided in the lower portion of the reactor, for injecting air. 13. The method of claim 12, wherein the diffuser comprises an air inlet pipe, a ventilator provided on one end of the air inlet pipe, and a nozzle provided in the other end of the air inlet pipe and extending to the inside of the reactor.
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