KR200257303Y1 - Device for treating stream and lake polluted - Google Patents

Abstract

The present invention relates to an apparatus for purifying polluted rivers and lakes, and in particular, the string contact oxidizing tank is filled with a large amount to purify suspended matter and organic matter contained in river water or lake water through adsorption and biological oxidative decomposition by high concentration microorganisms. Sticky microbial contact materials with high surface area; A cylindrical draft tube installed vertically between the string-like microbial contact material to prevent desorption of microorganisms through the string-like microbial contact material and indirect aeration and evenly circulate water; An diffuser installed at the bottom of the cylindrical draft tube, for injecting air into the draft tube; And a bioreactor unit having a sludge port formed at the bottom thereof so that sludge including microorganisms detached from the sticky microorganism contacting material is settled and concentrated, the present invention comprises a short time of 1 to 2 hours. Not only can it effectively purify contaminated river water or lake water within residence time, but also it can operate continuously without deterioration of treatment efficiency due to pore occlusion of desorbed microbial sludge or disposal of sticky microbial contact material.

Description

DEVICE FOR TREATING STREAM AND LAKE POLLUTED}

The present invention relates to a purification device for polluted rivers and lakes, and more particularly, to use a string contact oxidizer in which a bioreactor unit has a multi-stage when the polluted river water and lake water are purified using a purification device installed on a river and lakeside. The organic material and suspended solids contained in the stream water or lake water that are introduced into the water are purified by adsorption and biological oxidative decomposition by high concentration microorganisms attached to the string-like microorganism contacting material. To a contaminant stream and appeal system that makes it possible.

As it is well known, the pollution of rivers or lakes caused by the influx of various pollutants has recently emerged as a serious problem, and various methods have been implemented to clean them up. It is possible to prevent the inflow of contaminated sewage and wastewater into rivers or lakes.In this way, it is possible to block the inflow of point source pollutants, but there is a problem that it is impossible to purify nonpoint pollutants such as pesticides and fertilizers sprayed on rice fields and fields. In addition, there is a disadvantage that excessive costs are required for the installation of sewage and sewage segregation pipes and the installation of sewage and waste water purification facilities.

In order to solve this problem, in recent years, there is a method of directly purifying pollutants by installing a purifier directly in a river or lake, and infiltrating the contaminated river water or lake water into a purifier installed at a riverside or lakeside, and purifying the treated water. Various ways of returning to a river or appeal are suggested.

At this time, a method of directly installing a purification device in a river or an lake includes a method using a string contact material as disclosed in Japanese Patent Application Laid-Open No. 9-38676. The contaminated river water or lake water is introduced into a purification device installed at a riverside or lakeside and treated. Methods of returning water to rivers and lakes include waste tires described in Korean Patent Publication No. 97-020976 and Korean Patent Publication No. 97-020977, and river water purification methods using waste concrete.

First, the method using the sticky contact material disclosed in Japanese Patent Laid-Open No. 9-38676 has the advantage of low installation cost, but has a low purification efficiency and difficult problems in maintenance such as investment by land and soil during flooding, and Korea Patent Publication 97 Waste water purification method using waste tires and waste concrete described in -020976 and 97-020977 has good purification efficiency, but waste tires and waste concrete used as contact materials are not suitable for microbial adhesion and porosity is 50% or less. There is a disadvantage that the volume is large, and also, as time passes, the voids are closed by the waste sludge, and finally, there is a problem that the waste disposal.

Therefore, the present invention has been made to solve the conventional problems as described above, and effectively purifies contaminated river water or lake water within a short residence time of 1 to 2 hours, deterioration of treatment efficiency due to pore occlusion of desorbed microbial sludge Another object of the present invention is to provide an apparatus for purifying polluted streams and appeals to enable continuous operation without disposal of the sticky microbial contact material.

In order to achieve the above object, the present invention is a device for purifying polluted rivers and lakes, the pollutants for purifying polluted river water and lake water using inflow means, sedimentation facilities, string contact oxidation tanks and discharge means installed around rivers or lakes. In the purification apparatus of rivers and lakes,

The string contact oxidizing tank may include a sticky microbial contact material having a large surface area filled with a large amount of surface-filled material for purifying suspended matter and organic matter contained in river water or lake water that have passed through the settling facility by adsorption and biological oxidative decomposition by high concentration microorganisms;

A cylindrical draft tube installed vertically between the string-like microbial contact material to prevent desorption of microorganisms through the string-like microbial contact material and indirect aeration and to evenly circulate water;

An air diffuser installed at a bottom of the cylindrical draft tube to inject air into the draft tube; And

A bioreactor unit having a sludge port formed at a bottom portion of the sludge including microorganisms detached from the string-like microorganism contact material is formed in a multi-stage.

1 is a schematic view showing the entire purification process of the polluted rivers and appeals according to an embodiment of the present invention,

Figure 2 is a schematic plan view showing the configuration of a purification apparatus for polluting streams and appeals according to an embodiment of the present invention,

3 is a cross-sectional view taken along line AA ′ of FIG. 2;

4 is a cross-sectional view taken along line B-B 'according to FIG. 2;

5 is a front view showing a state in which two bioreactor units are connected to a purification apparatus for polluting streams and appeals according to an embodiment of the present invention;

6 is a cross-sectional view taken along the line CC ′ of FIG. 5.

<Explanation of symbols for the main parts of the drawings>

100: bioreactor unit 101: string-like microbial contact material

102 draft tube 103 diffuser

104: sludge port 105: sludge discharge valve

106: sludge storage tank 107: dividing wall

108: porous partition wall 109: flat iron frame

110: support frame 111: inlet pipe

112: discharge pipe 113: check hole

Hereinafter, an apparatus for purifying polluted streams and appeals according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic diagram illustrating the entire purification process of a polluted stream and an appeal according to an embodiment of the present invention.

First, the purification device installed on the river or lakeside can be largely divided into inflow means, sedimentation equipment, string contact oxidation tank, and discharge means, the inflow means is a stream or lake water contaminated from the river or lake, the sedimentation equipment Influences the inflow.

Then, the sedimentation equipment receives the contaminated river water and lake water from the inflow means, and then removes the heavy sediment by gravity sedimentation and then introduces the river water and lake water containing the organic material and the suspended matter into the string contact oxidation tank. Play a role.

Subsequently, the string contact oxidation tank settles and concentrates sludge including desorbed microorganisms after purifying organic substances and suspended solids contained in the stream water and lake water introduced through the sedimentation facility by adsorption and biological oxidative decomposition by high concentration microorganisms. After that, it serves to introduce purified river water and lake water into the discharge means.

Then, the discharge means serves to discharge the river water and lake water purified in the string contact oxidation tank to the river or lake.

Figure 2 is a schematic diagram showing the configuration of a purification apparatus for polluting streams and appeals according to an embodiment of the present invention, Figure 3 is a cross-sectional view taken along the line A-A 'according to Figure 2, Figure 4 is a B-B according to Figure 2 As a cross-sectional view, the apparatus for purifying polluted streams and lakes shown in FIGS. 2 to 4 is provided with a string-like microbial contact material 101, a draft tube 102, an diffuser 103, and a sludge port 104. The bioreactor unit 100 is configured in multiple stages.

First, the string-like microorganism contacting material 101 in the bioreactor unit 100 serves to purify suspended matter and organic matter contained in the river water or lake water passing through the sedimentation facility by adsorption and biological oxidative decomposition by high concentration microorganisms. do.

Here, the string-like microorganism contact material 101 has a surface area of 1.0m ² or more per 1m to allow the growth of a large amount of microorganisms attached, the installation amount is 50 to 500m per 1m ³ of the bioreactor unit 100, More preferably 200 m to 500 m are most suitable.

In addition, the draft tube 102 in the bioreactor unit 100 is vertically installed between the string-like microbial contact material 101, to prevent the detachment of microorganisms through the string-like microbial contact material 101 and indirect aeration It serves to circulate the water evenly and is formed in a cylindrical shape.

Here, the draft tube 102 is preferably installed at least one or more so as not to generate a dead zone in which the swirl flow is not transmitted according to the plane size of the bioreactor unit 100, the string-like microorganism contact member 101 Is connected vertically just above the upper installation layer.

In addition, the diffuser 103 in the bioreactor unit 100 is installed at the bottom of the cylindrical draft tube 102 to inject air into the draft tube 102 as shown in FIG. 5. In addition, the number of the draft tube 102 is also increased according to the number, the air injection device (not shown) is connected to another side of the diffuser (103).

In addition, the sludge port 104 in the bioreactor unit 100 serves to settle and concentrate the sludge containing microorganisms detached from the sticky microbial contact material 101, the sludge port 104 has a swirl flow The sludge containing the microorganisms desorbed into the dead zone is formed on the bottom surface of the bioreactor unit 100 in a deep pyramid shape so that the sludge is sedimented and concentrated by natural precipitation.

In addition, the bioreactor unit 100 has a flat or square shape and preferably has a length of 3 to 6 m on one side of the flat surface, and is provided with a treatment capacity or purification device for river or lake water. Depending on the characteristics of the area, the number may be increased or decreased.

In addition, the bioreactor unit 100 is provided with a sludge withdrawal valve 105 for discharging the sludge containing the microorganisms settled in the sludge port 104, concentrated, and the other side of the sludge withdrawal valve 105 The sludge storage tank 106 for storing the sludge discharged through the sludge withdrawal valve 105 is further installed.

In addition, one or more variably installed between the bioreactor unit 100 and the bioreactor unit 100 formed in multiple stages in the string contact oxidizing tank to control the flow of water into a plug and a flow. The separation wall 107 may be additionally installed, and the separation wall 107 may be formed in a form in which an upper wall or a lower wall is alternately partially or entirely drilled in the vertical direction of the bioreactor unit 100. Can be.

In addition, the bioreactor unit 100 after the separation wall 107 serves as a biofilter according to the rectified flow of water when the bioreactor unit 100 is operated without giving up to the string contact oxidizing tank having a multi-stage. In order to be able to do so, a porous separation wall 108 having a porous structure is further installed in front of the last bioreactor unit 100.

Each of the bioreactor units 100 includes a plurality of flat iron frames 109 formed to directly fix the string-like microbial contact member 101 as shown in FIG. 6; And a support frame 110 connected to the plurality of flat iron frames 109 to fix and support the plurality of flat iron frames 109 on which the string-like microbial contact material 101 is fixed, and the flat iron frame 109. And the support frame 110 is formed of a corrosion resistant material.

In addition, the string contact oxidation tank, as shown in Figure 2 so that it can be alternately operated according to the purpose of maintenance of the purification device, the string contact oxidation tank may be installed separated into two series.

According to the purification device of the polluted rivers and lakes according to the present invention as described above, the bioreactor unit has a multi-step string contact oxidation tank when the polluted river waters and lakes are purified using the purification device installed on the rivers and lakes. The organic material and suspended solids contained in the stream water or lake water that are introduced into the water are purified by adsorption and biological oxidative decomposition by high concentration microorganisms attached to the string-like microorganism contacting material. This makes it possible to effectively purify contaminated river water or lake water within a short residence time of 1 to 2 hours, as well as to reduce the treatment efficiency due to pore occlusion of desorbed microbial sludge or to dispose of sticky microbial contact materials. Driving is effective.

Claims (12)

In the purification device for polluted rivers and lakes to purify the contaminated river water and lake water using inflow means, sedimentation equipment, string contact oxidation tank and discharge means installed around the river or lake, The string contact oxidizing tank may include a sticky microbial contact material having a large surface area filled with a large amount of surface-filled material for purifying suspended matter and organic matter contained in river water or lake water that have passed through the settling facility by adsorption and biological oxidative decomposition by high concentration microorganisms; A cylindrical draft tube installed vertically between the string-like microbial contact material to prevent desorption of microorganisms through the string-like microbial contact material and indirect aeration and to evenly circulate water; An air diffuser installed at a bottom of the cylindrical draft tube to inject air into the draft tube; And And a bioreactor unit having a sludge port formed at a bottom portion of the sludge containing microorganisms detached from the string-like microorganism contacting material in a plurality of stages. The method of claim 1, Each of the bioreactor units may include: a plurality of flat iron frames formed to directly fix the string-like microbial contact material; And And a support frame connected to the plurality of flat iron frames to fix and support the plurality of flat iron frames on which the string-like microbial contact material is fixed. The method of claim 1, The bioreactor unit has a flat or square shape, and one side of the plane has a length of 3 to 6 m, the purification apparatus for polluted rivers and lakes. The method of claim 1, The bioreactor unit constituting the string contact oxidizing tank, the number of streams and lakes purifying apparatus, characterized in that the number is adjusted to be installed according to the characteristics of the area in which the treatment capacity or the purification device is installed. The method of claim 1, The string-like microbial contact material has a surface area of 1.0 m ² or more per 1 m to allow a large amount of microorganisms to be attached and grow, and the installation amount is 50 to 500 m per 1 m ^{3 of the} bioreactor unit. . The method of claim 1, And at least one draft tube is installed to prevent a dead zone in which swirl flow is not transmitted according to the plane size of the bioreactor unit. The method of claim 1, The sludge pot is characterized in that the sludge containing the microorganisms desorbed to the dead zone that does not reach the swirl flow is formed in the form of a pyramid deep deep above the center so that it can be settled and concentrated by natural sedimentation. The method of claim 1, The bioreactor unit is provided with a sludge withdrawal valve for discharging the sludge containing the microorganisms settled in the sludge port, and on the other side of the sludge withdrawal valve to store the sludge discharged through the sludge withdrawal valve Purification apparatus of polluted rivers and appeals, characterized in that additional storage tank is installed. The method of claim 1, One or more variablely installed between the bioreactor unit and the bioreactor unit formed in multiple stages in the string contact oxidizing tank is additionally installed to control the flow of the water to the plug (Plug), flow (flow) flow is additionally installed Purification device for polluting rivers and appeals. The method of claim 9, The dividing wall is a purification apparatus for polluted rivers and lakes, characterized in that the upper wall of the upper frame and the lower wall between the sludge port and the lower frame in the vertical direction of the bioreactor unit. The method of claim 1, The stick-contact oxidizing tank, when operated without giving up, a porous separation wall having a porous structure is further installed in front of the last bioreactor unit so that the bioreactor unit after the separation wall can serve as a biofilter according to the flow of water rectification. Purification device of the polluted rivers and appeal. The method of claim 1, The string contact oxidizing tank is a polluted stream and appeal purification device, characterized in that the string contact oxidizing tank is separated and installed in two series so as to be operated alternately according to the purpose of maintenance and the like of the purification device.