KR100809498B1 - Apparatus supply of oxygen in the pond - Google Patents

Apparatus supply of oxygen in the pond Download PDF

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Publication number
KR100809498B1
KR100809498B1 KR1020060107200A KR20060107200A KR100809498B1 KR 100809498 B1 KR100809498 B1 KR 100809498B1 KR 1020060107200 A KR1020060107200 A KR 1020060107200A KR 20060107200 A KR20060107200 A KR 20060107200A KR 100809498 B1 KR100809498 B1 KR 100809498B1
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South Korea
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pond
oxygen
water
main body
inlet
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KR1020060107200A
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Korean (ko)
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김대용
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김대용
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • C02F3/20—Activated sludge processes using diffusers
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/02—Odour removal or prevention of malodour
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/04—Disinfection
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage

Abstract

An apparatus for supplying oxygen to a pond is provided to supply a large amount of oxygen to the pond to activate microorganisms, thereby preventing water of the pond from being rotten. A body(101) is buried at a pond, wherein the body has an inlet, through which water of a pond is inputted, and an outlet, through which the inputted water is discharged to the pond. A circulation pump(104) is fixed to a bottom surface within the body to circulate the water. An oxygen supply pipe(112) is connected to an oxygen tank(111) installed outside the pond. A plurality of air stones(106) are fixed to the bottom surface within the body. The air stones are connected to the oxygen supply pipe through a plurality of connection tubes(105), wherein the air stones receive oxygen, and then shatter the oxygen so that the oxygen is easily dissolved in the water of the pond. Further, a plurality of filter holes are formed at the inlet of the body.

Description

연못의 산소공급장치{APPARATUS SUPPLY OF OXYGEN IN THE POND}Oxygen supply device for pond {APPARATUS SUPPLY OF OXYGEN IN THE POND}

도 1은 본 발명 산소공급장치의 구성을 투시하여 나타낸 도면1 is a view showing the configuration of the present invention oxygen supply device

도 2는 본 발명 산소공급장치의 구성을 나타낸 단면도2 is a cross-sectional view showing the configuration of the present invention oxygen supply device

도 3은 본 발명 산소공급장치의 작용을 설명하기 위해 나타낸 작용도Figure 3 is a functional diagram shown to explain the operation of the oxygen supply device of the present invention

<도면 중 주요 부분에 대한 부호설명><Code Description of Main Parts of Drawing>

101-본체 102-유입구101-body 102-inlet

103-배출구 104-순환펌프103-outlet 104-circulating pump

105-연결관 106-에어스톤105-connector 106-Airstone

107-여과공 111-산소탱크107-Filter 111-Oxygen Tank

112-산소공급관 113-전선112-Oxygen Supply Line 113-Wire

114-약품탱크 115-약품공급관114-Drug Tank 115-Drug Supply Pipe

116-보호튜브116-protection tube

본 발명은 골프장이나 공원등의 연못으로 산소를 공급하는 장치에 관한 것으로 특히, 연못으로 수장되어 연못의 물이 유입될 수 있는 유입구와 유입구로 유입 된 물을 다시 연못으로 배출시키기 위한 배출구를 형성하고 있는 본체를 구비하고상기 본체의 내부 바닥면 중앙으로 순환펌프를 고정시켜 순환펌프의 작동에 의해 연못의 물이 본체의 유입구를 통해 유입되어 배출구를 통해 연못으로 다시 배출되도록 하며 본체의 바닥면 주변부에는 다수개의 에어스톤을 고정하여 연못 외부에 설치되는 산소탱크와 연결된 산소공급관과 다수개의 연결관으로 연결함으로서 상기 에어스톤에 의해 공급받은 산소를 연못의 물에 잘 용해될 수 있도록 산소를 잘게 부수어 공급하는 동시에 외부의 약품탱크와 연결된 약품공급관을 본체의 내부에 설치하여서 된 것으로, 산소가 부족한 연못의 물에 많은 량의 산소를 공급함으로서 수중 미생물들의 활성화에 의해 물이 정체되고 썩는 것을 방지할 수 있고 악취의 발생도 방지할 수 있으며 약품투여에 의해 농약 및 비료 섞인 물들의 유입에 의한 부유물이나 녹조의 발생을 억제하여 물의 투명도를 높일 수 있도록 하는 연못의 산소공급장치에 관한 것이다.The present invention relates to an apparatus for supplying oxygen to a pond, such as a golf course or a park, and in particular, to form an inlet and a discharge port for discharging the water introduced into the pond and the water flowing into the inlet can be stored in the pond. A main body having a main body fixed to the center of the inner bottom surface of the main body by the operation of the circulating pump so that the water of the pond flows through the inlet of the main body and is discharged back into the pond through the outlet. By fixing a plurality of airstones and connecting them with an oxygen supply pipe connected to an oxygen tank installed outside the pond with a plurality of connecting pipes, the oxygen supplied by the air stone is finely crushed and supplied to dissolve in the water of the pond. At the same time, by installing the chemical supply pipe connected to the external chemical tank inside the main body By supplying a large amount of oxygen to the water of oxygen-poor ponds, it is possible to prevent the water from stagnation and rot by activation of aquatic microorganisms, and to prevent the occurrence of odors, The present invention relates to an oxygen supply device for a pond that suppresses the occurrence of suspended matter or green algae due to inflow to increase the transparency of water.

종래 골프장이나 공원등의 연못등의 수질은 흐르는 하천의 물과 달리 가둬져 있는 상태이므로 정체로 인하여 생태적인 인자의 반응이 중요시되며 특히, 일정한 체류시간에 따른 조류의 증식이 유기물에 의한 수질오염보다 더 중요한 환경변화로 파악된다.Conventionally, the water quality of ponds, such as golf courses and parks, is confined, unlike water from flowing streams, so the reaction of ecological factors is important due to congestion. It is identified as a more important environmental change.

따라서, 상기와 같이 가둬져 있는 연못의 물은 산소가 부족하게 되고 산소가 부족하면 수중 미생물들의 성장이 활발하지 못하기 때문에 물이 썩게 되면서 악취의 발생도 가속화 되어진다.Therefore, the water in the pond confined as described above is deficient in oxygen, and when oxygen is deficient, the growth of underwater microorganisms is not active, so that the water decays and the occurrence of odor is accelerated.

또한, 상기 골프장이나 공원등의 연못에는 농약이나 비료가 섞인물들이 유입 되면서 녹조나 부유물이 발생하게 되어 물의 투명도를 저하시키는 동시에 미관상으로도 좋지 않은 문제점도 가지고 있었다.In addition, the ponds, such as golf courses or parks, are introduced with a mixture of pesticides and fertilizers, and green algae and floating matters are generated.

이러한 종래의 문제점등을 해결 보완하기 위한 본 발명의 목적은,An object of the present invention for solving and solving such a conventional problem,

산소가 부족한 연못의 물에 많은 량의 산소를 공급함으로서 수중 미생물들의 활성화에 의해 물이 정체되고 썩는 것을 방지할 수 있고 악취의 발생도 방지할 수 있으며 약품투여에 의해 농약 및 비료 섞인 물들의 유입에 의한 부유물이나 녹조의 발생을 억제하여 물의 투명도를 높일 수 있도록 하는 목적을 제공한다.By supplying a large amount of oxygen to the water of oxygen-poor ponds, it is possible to prevent water stagnation and rot by activation of aquatic microorganisms, to prevent the occurrence of odor, and to inflow of water mixed with pesticide and fertilizer by chemical administration. It provides an object to increase the transparency of the water by suppressing the occurrence of suspended matter or green algae.

상기의 목적을 달성하기 위하여 본 발명은,In order to achieve the above object, the present invention,

연못으로 수장되어 연못의 물이 유입될 수 있는 유입구와 유입구로 유입된 물을 다시 연못으로 배출시키기 위한 배출구를 형성하고 있는 본체를 구비하고 상기 본체의 내부 바닥면 중앙으로 순환펌프를 고정시켜 순환펌프의 작동에 의해 연못의 물이 본체의 유입구를 통해 유입되어 배출구를 통해 연못으로 다시 배출되도록 하며 본체의 바닥면 주변부에는 다수개의 에어스톤을 고정하여 연못 외부에 설치되는 산소탱크와 연결된 산소공급관과 다수개의 연결관으로 연결함으로서 상기 에어스톤에 의해 공급받은 산소를 연못의 물에 잘 용해될 수 있도록 산소를 잘게 부수어 공급하는 동시에 외부의 약품탱크와 연결된 약품공급관을 본체의 내부에 설치하면 본 발명의 목적을 달성할 수 있게 된다.A main body having an inlet through which the water in the pond can be introduced and an outlet for discharging the water introduced into the inlet back into the pond, and a circulation pump fixed to the center of the inner bottom of the main body The water in the pond is introduced through the inlet of the main body by the operation of the main body and is discharged back to the pond through the outlet, and a plurality of oxygen supply pipes and oxygen supply pipes connected to the oxygen tank installed outside the pond are fixed to the bottom periphery of the main body. The purpose of the present invention is to provide a chemical supply pipe connected to an external chemical tank at the same time by crushing the oxygen finely so that the oxygen supplied by the air stone can be dissolved in the water of the pond by connecting with two connection tubes. Can be achieved.

본 발명의 구성을 첨부된 도면에 의해 상세히 설명하기로 한다.The configuration of the present invention will be described in detail with the accompanying drawings.

연못으로 수장되어 연못의 물이 유입될 수 있는 유입구(102)와 유입구(102)로 유입된 물을 다시 연못으로 배출시키기 위한 배출구(103)를 형성하고 있는 본체(101)와,A main body 101 which is stored in a pond and forms an inlet port 102 through which water in the pond can be introduced, and an outlet port 103 for discharging the water introduced into the inlet port 102 back to the pond;

상기 본체(101)의 내부 바닥면으로 고정되어 연못의 물이 본체(101)의 유입구(102)를 통해 유입되어 배출구(103)를 통해 연못으로 다시 배출되도록 순환시켜주는 순환펌프(104)와,A circulation pump 104 fixed to the inner bottom surface of the main body 101 to circulate the water in the pond through the inlet 102 of the main body 101 to be discharged back into the pond through the outlet 103;

상기 본체(101)의 바닥면에 고정되어 연못 외부에 설치되는 산소탱크(111)와 연결된 산소공급관(112)과 다수개의 연결관(105)으로 연결되어 산소를 공급받은 뒤 공급받은 산소를 연못의 물에 잘 용해될 수 있도록 산소를 잘게 부수어 공급하는 다수개의 에어스톤(106)을 구비한 구성이다.Oxygen supplied after the oxygen is supplied to the oxygen supply pipe 112 and the plurality of connection pipes 105 connected to the oxygen tank 111 installed on the outside of the pond fixed to the bottom surface of the main body 101 to supply the oxygen The air stone 106 is provided with a plurality of air stones 106 that break down and supply oxygen to be dissolved in water well.

그리고, 상기 본체(101)의 유입구(102)로 유입되는 연못의 물에 포함된 이물질들을 여과한 뒤 유입시키기 위해 본체(101)의 유입구(102)에 형성되는 다수개의 여과공(107)을 더 구비하였다.In addition, a plurality of filtration holes 107 formed in the inlet 102 of the main body 101 to filter and introduce the foreign substances contained in the water of the pond flowing into the inlet 102 of the main body 101. Equipped.

또한, 상기 본체(101)의 내부로 약품을 투입하여 부유물이나 녹조에 의해 물의 투명도가 저하되는 것을 방지하기 위해 외부의 약품탱크(114)와 연결된 약품공급관(115)을 본체(101)의 내부로 더 구비하였다.In addition, the chemical supply pipe 115 connected to the external chemical tank 114 to the inside of the main body 101 in order to put the chemical into the main body 101 to prevent the transparency of the water is lowered by the float or green algae It was further equipped.

그리고, 상기 본체(101)와 산소탱크(111) 및 약품탱크(114)를 연결하는 산소공급관(112)과 약품공급관(115) 그리고 순환펌프(104)에 전원을 공급하는 전선(113)을 집약시켜 놓기 위해 산소공급관(112)과 약품공급관(115) 그리고 전선(113)을 삽입하고 있는 보호튜브(116)를 더 구비하였다.In addition, an oxygen supply pipe 112 connecting the main body 101, the oxygen tank 111 and the chemical tank 114, the chemical supply pipe 115 and the electric wire 113 for supplying power to the circulation pump 104 are concentrated. The protection tube 116 is further provided to insert the oxygen supply pipe 112, the chemical supply pipe 115 and the wire 113 in order to make it.

이와같이된 본 발명의 작용을 설명하면 다음과 같다.Referring to the operation of the present invention as described above is as follows.

먼저, 본 발명의 본체(101)는 골프장이나 공원에 만들어진 연못 내부에 수장되고 산소탱크(111)와 약품탱크(114)는 연못 주변의 지상에 설치되어진다.First, the main body 101 of the present invention is stored in a pond made in a golf course or a park, and the oxygen tank 111 and the chemical tank 114 are installed on the ground around the pond.

그리고, 상기 산소탱크(111)에 연결된 산속공급관(112)은 본체(101)내부에 고정되어 있는 다수개의 에어스톤(106)과 연결된 연결관(105)으로 도 1 및 도 2에 나타낸 바와같이 연결되어지며 약품탱크(114)에 연결된 약품공급관(115)은 본체(101)의 내부 즉, 순환펌프(104)와 근접하여 설치되어진다.In addition, the acid supply pipe 112 connected to the oxygen tank 111 is connected to the connection pipe 105 connected to the plurality of air stones 106 fixed inside the body 101 as shown in FIGS. 1 and 2. Chemical supply pipe 115 is connected to the chemical tank 114 is installed in the body 101, that is, close to the circulation pump 104.

또한, 상기 산소공급관(112)과 약품공급관(115)에는 개폐밸브(도시안됨)들이 연결되어 있어 산소 및 약품의 공급 및 중단을 제어할 수 있다.In addition, the opening and closing valve (not shown) is connected to the oxygen supply pipe 112 and the chemical supply pipe 115 to control the supply and interruption of oxygen and chemicals.

그리고, 상기 산소공급관(112)과 약품공급관(115) 그리고 순환펌프(104)에 전원을 공급하는 전선(113)등은 보호튜브(116)에 의해 한 묶음으로 마감되어지므로 지상으로 나타나는 선은 보호튜브(116)의 외관만이 나타나게 되어 말끔한 외관을 얻을 수 있게 된다.In addition, since the wires 113 for supplying power to the oxygen supply pipe 112, the chemical supply pipe 115, and the circulation pump 104 are closed in a bundle by the protection tube 116, a line appearing on the ground is protected. Only the outer appearance of the tube 116 appears to obtain a neat appearance.

상기와 같이된 본 발명은, 상기 산소공급관(112)에 연결된 개폐밸브를 개방하면 산소탱크(111)의 산소가 산소공급관(112)과 연결관(105)을 통해 다수개의 에어어스톤(106)으로 공급되어진다.According to the present invention as described above, when the opening and closing valve connected to the oxygen supply pipe 112, the oxygen of the oxygen tank 111 through the oxygen supply pipe 112 and the connection pipe 105 of a plurality of air stone 106 Is supplied.

상기 에어스톤(106)으로 공급된 산소는, 에어스톤(106)에 형성된 수많은 기공들을 통과하는 도중 잘게 부숴지면서 도 3에 나타낸 바와같이 외부로 유출되어 본체(101) 내부의 물에 용해되어진다.Oxygen supplied to the air stone 106 is crushed finely while passing through a number of pores formed in the air stone 106, is discharged to the outside as shown in Figure 3 is dissolved in the water inside the main body 101.

상기와 같이 에어스톤(106)을 통과한 산소는 미세하게 부숴진 상태에서 물에 용해되기 때문에 향상된 희석효과를 얻을 수 있으며 아울러, 상기 수중에 존재하는 미생물들을 활성화시킬 수 있게 된다.As described above, the oxygen passed through the air stone 106 is dissolved in water in a finely broken state, thereby obtaining an improved dilution effect, and activating microorganisms present in the water.

그리고, 콘트롤박스의 지시에 의해 순환펌프(104)가 가동되면서 연못의 물을 유입구(102)로 흡입하여 배출구(103)를 통해 배출시키면서 연못의 물을 순환시키는 작용에 의해 본체(101)의 내부에서 산소가 용해되어 있는 물이 다른 물과 희석이 되어지므로 연못 전체의 산소 용존률을 높일 수 있게 된다.Then, the circulation pump 104 is operated by the instruction of the control box to suck the water in the pond into the inlet 102 and discharge it through the outlet 103 to circulate the water in the pond by the inside of the main body 101. Since oxygen is dissolved in the water is diluted with other water, it is possible to increase the oxygen dissolved rate of the entire pond.

한편, 상기의 연못에 농약이나 비료 섞인 물이 유입되어 부유물이나 녹조가 발생하게 되면 약품을 투여하게 되는바, 사용자는 지상의 약품탱크(114)와 연결된 약품공급관(115)의 개폐밸브를 개방하면 약품탱크(114)의 약품이 약품공급관(115)을 따라 공급되어 본체(101)의 내부로 분사되어진다.On the other hand, when the water mixed with pesticides or fertilizer is introduced into the pond and floats or green algae are generated, the medicine is administered. When the user opens the on / off valve of the medicine supply pipe 115 connected to the ground medicine tank 114, The chemicals of the chemical tank 114 are supplied along the chemical supply pipe 115 and injected into the body 101.

따라서, 상기의 약품투여에 의해 부유물이나 녹조등을 중화시켜 물의 투명도를 향상시킬 수 있게 된다.Therefore, by administering the above chemicals, it is possible to neutralize the suspended matter or the green algae and to improve the transparency of water.

한편, 본 발명 본체(101)의 유입구(102)에는 다수개의 여과공(107)이 형성되어 있는바, 상기의 여과공(107)들은 연못의 물에 포함된 이물질들을 여과한 뒤 본체(101)내부로 유입시키기 위해 형성시킨 것이다.On the other hand, a plurality of filter holes 107 are formed in the inlet 102 of the body 101 of the present invention, the filter holes 107 are the body 101 after filtering the foreign substances contained in the water of the pond It was formed to enter inside.

상기의 여과공(107)은 여과망등으로 대체시킬 수도 있다.The filter holes 107 may be replaced with a filter net or the like.

이와같이된 본 발명은, 산소가 부족한 연못의 물에 많은 량의 산소를 공급함으로서 수중 미생물들의 활성화에 의해 물이 정체되고 썩는 것을 방지할 수 있고 악취의 발생도 방지할 수 있으며 약품투여에 의해 농약 및 비료 섞인 물들의 유입 에 의한 부유물이나 녹조의 발생을 억제하여 물의 투명도를 높일 수 있는 유용한 효과를 가진다.Thus, the present invention, by supplying a large amount of oxygen to the water of the oxygen-poor pond can prevent water stagnation and decay by the activation of microorganisms in the water, it can also prevent the occurrence of odor, chemicals and pesticides It has a useful effect to increase the transparency of water by suppressing the occurrence of suspended matter or green algae caused by the inflow of fertilizer-mixed water.

Claims (4)

연못으로 수장되어 연못의 물이 유입될 수 있는 유입구와 유입구로 유입된 물을 다시 연못으로 배출시키기 위한 배출구를 형성하고 있는 본체와,A main body which is stored in a pond and forms an inlet for introducing water from the pond and an outlet for discharging water introduced into the inlet to the pond; 상기 본체의 내부 바닥면으로 고정되어 연못의 물이 본체의 유입구를 통해 유입되어 배출구를 통해 연못으로 다시 배출되도록 순환시켜주는 순환펌프와,A circulation pump fixed to the inner bottom surface of the main body to circulate the water in the pond through the inlet of the main body to be discharged back into the pond through the outlet; 상기 본체의 바닥면에 고정되어 연못 외부에 설치되는 산소탱크와 연결된 산소공급관과 다수개의 연결관으로 연결되어 산소를 공급받은 뒤 공급받은 산소를 연못의 물에 잘 용해될 수 있도록 산소를 잘게 부수어 공급하는 다수개의 에어스톤을 구비한 것을 특징으로 하는 연못의 산소공급장치.It is fixed to the bottom of the main body and is connected to an oxygen supply pipe connected to an oxygen tank installed outside the pond and connected to a plurality of connecting pipes to supply oxygen by smashing oxygen so that the supplied oxygen can be dissolved in the water of the pond well. Pond oxygen supply device, characterized in that provided with a plurality of air stones. 제 1 항에 있어서,The method of claim 1, 상기 본체의 유입구로 유입되는 연못의 물에 포함된 이물질들을 여과한 뒤 유입시키기 위해 본체의 유입구에 형성되는 다수개의 여과공을 더 구비한 것을 특징으로 하는 연못의 산소공급장치.The oxygen supply device of the pond further comprises a plurality of filter holes formed in the inlet of the main body for filtering and introducing foreign substances contained in the water of the pond flowing into the inlet of the main body. 제 1 항에 있어서,The method of claim 1, 상기 본체의 내부로 약품을 투입하여 부유물이나 녹조에 의해 물의 투명도가 저하되는 것을 방지하기 위해 외부의 약품탱크와 연결된 약품공급관을 본체의 내부로 더 구비한 것을 특징으로 하는 산소공급장치.Injecting the chemical into the body of the oxygen supply device further comprises a chemical supply pipe connected to the external chemical tank to the inside of the main body in order to prevent the transparency of the water is lowered by the float or green algae. 제 3 항에 있어서,The method of claim 3, wherein 상기 본체와 산소탱크 및 약품탱크를 연결하는 산소공급관과 약품공급관 그리고 순환펌프에 전원을 공급하는 전선을 집약시켜 놓기 위해 산소공급관과 약품공급관 그리고 전선을 삽입하고 있는 보호튜브를 더 구비한 것을 특징으로 하는 산소공급장치.Oxygen supply pipe and the chemical supply pipe connecting the main body and the oxygen tank and the chemical tank and the oxygen supply tube and the chemical supply tube and the protection tube for inserting the wire in order to aggregate the wires for supplying power to the circulation pump characterized in that it further comprises Oxygen supply system.
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08299982A (en) * 1995-05-10 1996-11-19 Mitsuo Okamoto Aeration device for bottom water layer
JP2001129588A (en) 1999-11-05 2001-05-15 Mitsuo Okamoto Air bubble excited flow type submerged aeration device
KR100292426B1 (en) 1999-09-30 2001-06-01 주대성 A Mobile Water Purifying System
KR200320054Y1 (en) 2003-04-09 2003-07-18 정천복 sterilizer equipped in water tank
US20040140262A1 (en) 2003-01-21 2004-07-22 Fbc Technologies, Inc. Method and apparatus for aerating wastewater
JP2005288247A (en) 2004-03-31 2005-10-20 Ube Material Industries Ltd Method and device for improving bottom sediment in closed freshwater area

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08299982A (en) * 1995-05-10 1996-11-19 Mitsuo Okamoto Aeration device for bottom water layer
KR100292426B1 (en) 1999-09-30 2001-06-01 주대성 A Mobile Water Purifying System
JP2001129588A (en) 1999-11-05 2001-05-15 Mitsuo Okamoto Air bubble excited flow type submerged aeration device
US20040140262A1 (en) 2003-01-21 2004-07-22 Fbc Technologies, Inc. Method and apparatus for aerating wastewater
KR200320054Y1 (en) 2003-04-09 2003-07-18 정천복 sterilizer equipped in water tank
JP2005288247A (en) 2004-03-31 2005-10-20 Ube Material Industries Ltd Method and device for improving bottom sediment in closed freshwater area

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