KR19990027507A - Pollution Soil Purification Device - Google Patents

Abstract

The present invention provides a high pressure air supply device for supplying high pressure air, a low pressure air supply device for supplying low pressure air, a surge tank for temporarily storing air supplied from the high pressure air supply device and the low pressure air supply device, and A plurality of underground air inlet pipes for supplying air discharged from the surge tank to the ground, an air distribution device for distributing air discharged from the surge tank to the underground air injection pipes, and between the high pressure air supply device and the surge tank. A first solenoid valve provided in a pipe, a second solenoid valve provided in a pipe between the low pressure air supply device and a surge tank, a third solenoid valve provided in a pipe between the surge tank and an air distribution device, and the high pressure air supply Pressure switch with pressure gauge installed between the device and surge tank, remote control of each device It is composed of a control unit, which activates aerobic microorganisms and accelerates the decomposition rate of organic materials, thereby stabilizing the landfill early and improving the availability time, and improving the soft ground of the landfill area, and stabilized soil as the cover material of the landfill. The present invention relates to a contaminated soil purification device that can be reused.

Description

Pollution Soil Purification Device

The present invention relates to a device for the purification and early stabilization of defective landfills and contaminated soil, and infusing air into the ground to activate aerobic microorganisms to effectively stabilize the landfill in order to effectively stabilize the landfill site It is about.

The landfill method, which is the final stage of waste disposal, has been used for a long time since the time when environmental problems were not raised as the easiest method, despite disadvantages such as site requirements. Since the landfill method is completely dependent on the purification power of nature, there is no difficulty in maintenance, but there is a disadvantage that it takes a long time for the landfill to stabilize. In particular, in recent years, the amount of waste to be reclaimed has been increasing, but the land use area of landfills has increased, but landfills have never been enough due to limited landfill space, and it is difficult to make effective use of the entire landfill due to regional egoism among local governments. As environmental needs increase, sanitary and engineering management of landfills is urgently needed.

Therefore, large-scale landfill facilities such as Gimpo landfills operate relatively efficient and stable sanitary landfill facilities, but environmental problems in the surrounding areas still exist. In addition, Nanjido's landfill is not fully stabilized, but the landfill is not recycled despite high development value.

In particular, small and medium sized landfills scattered throughout the country are not sanitary landfills but poor landfills, and environmental pollution and hygiene problems exist. Such poor landfills were initially located on the outskirts of the city, but are located in the immediate vicinity of the city due to the expansion of the city, which is an obstacle to the planned development of the city. Therefore, there is a need to stabilize such a poor landfill facility early.

Existing common landfill restoration technology is Excavation. This method is to re-excavate the completed landfill by using an excavator after a certain period of time, and to separate the decomposable and hard-decomposable materials with a sorter, and then incineration and composting within the surface.

In addition, a method of relocating the entire defective landfill to another place may be considered, but it may be almost impossible due to the surrounding conditions due to local egoism after the implementation of the municipality.

However, the re-excavation method has a lot of site required during construction and may cause damage due to odor in the surrounding area, and there is a problem in that a lot of equipment and manpower are required. In addition, since there may be a momentary impact on the surrounding environment ecosystem, there is a lot of problems that require a sufficient pre-investigation before the start of construction, and reprocessing before incineration or composting the sorted repaired waste.

The present invention has been made to solve the above problems of the prior art, by supplying oxygen in the ground for the growth and activation of aerobic microorganisms inhabit the soil to speed up the purification of landfills or contaminated soil and lower the groundwater level An object of the present invention is to provide a contaminated soil purification apparatus that can suppress contamination of groundwater.

1 is a schematic view showing a contaminated soil purification apparatus according to the present invention,

2 is a block diagram of an air distribution device that is a main configuration of the present invention;

3 is a block diagram of underground air injection pipe that is a main configuration of the present invention.

Explanation of symbols for the main parts of the drawings

51: pressure switch 52: high pressure air supply

53: first solenoid valve 54: low pressure air supply device

55 second solenoid valve 56 flow meter

57: flow control valve 58: the third solenoid valve

59: surge tank 50: control unit

60: air distribution device 61: casing

61a: air inlet 61b: air outlet

62: drive motor 63: rotating plate

70: underground air injection pipe 71: vortex generation blade

72: hole

The present invention for achieving the above object is a high pressure air supply device for supplying high pressure air, a low pressure air supply device for supplying low pressure air, and the air supplied from the high pressure air supply device and the low pressure air supply device is temporarily A surge tank to be stored, a plurality of underground air injection pipes for supplying air discharged from the surge tank into the ground, an air distribution device for distributing air discharged from the surge tank to the underground air injection pipes, and the high pressure air A first solenoid valve provided in a pipe between a supply device and a surge tank, a second solenoid valve installed in a pipe between the low pressure air supply device and a surge tank, and a third solenoid provided in a pipe between the surge tank and an air distribution device. Pressure installed between the valve and the high pressure air supply and the surge tank, the pressure attached to the pressure gauge It characterized by consisting of a control unit for remotely controlling the position and, for each device.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, the contaminated soil purification apparatus according to the present invention includes a high pressure air supply device 52 for supplying high pressure air, a low pressure air supply device 54 for supplying low pressure air, and the high pressure air. A surge tank 59 in which the air supplied from the supply device 52 and the low pressure air supply device 54 is temporarily stored, and a plurality of underground air injection pipes for injecting the air discharged from the surge tank 59 into the ground ( 70, an air distribution device 60 for distributing air discharged from the surge tank 59 to the underground air injection pipe 70, and between the high pressure air supply device 52 and the surge tank 59. The first solenoid valve 53 provided in the pipe, the second solenoid valve 55 provided in the pipe between the low pressure air supply device 54 and the surge tank 59, the surge tank 59 and the air distribution device. The third solenoid valve 58 installed in the pipe between the And a pressure switch 51 installed between the high pressure air supply device 52 and the surge tank 59 and having a pressure gauge, and the second solenoid valve 55 and the low pressure air supply device to adjust the flow rate of air. Remote control of each of the above devices and the flow meter 56 provided between the 54, the flow control valve 57 provided between the flow meter 56 and the second solenoid valve 55 for manual operation It consists of the control part 50.

Here, the air pressure of the high pressure air supply device 52 is 3 to 5 kg / cm 2, and the air pressure of the low pressure air supply device 54 is 0.1 to 1 kg / cm 2, and the pressure can be adjusted according to site conditions. Do it. In addition, one side of the surge tank 59 is provided with a pressure sensor for detecting the pressure in the tank, an automatic pressure discharge device is installed to automatically discharge the air in the event of excessive pressure.

The underground air inlet pipe 70 is formed in a wedge shape so that the end is driven to the ground as shown in FIG. 3, and a vortex generating blade 71 for increasing the inflow pressure of air is built in the lower part. A plurality of holes 72 having different diameters are formed.

As shown in FIG. 2, the air distribution device 60 has a hemispherical casing 61 in which an air inlet 61a is installed on the upper side and a plurality of air outlets 61b on the lower side, and the casing 61 of the casing 61. It is composed of a rotating plate 63 installed therein and formed by an air inlet 63 'so as to be rotated by the drive motor 62 so that air can be injected only into one air outlet 61b. At this time, the drive motor 62 is used that can adjust the rotational speed.

In addition, each of the above devices is equipped with an interface device for monitoring the process, the computer of the control unit controls each part through the interface device according to the underwater environment. In particular, the underground air inlet pipe 70 is provided with an electrode sensor capable of measuring the environment in the ground, so that the measurement value of the electrode sensor can be input / stored to the computer through an interface device. do.

In addition, the control unit is provided with a power off device for stopping the operation of the device by shutting off the power at the same time as the warning when the measured value of each sensor installed in the device is above the set limit value.

The contaminated soil purification apparatus of the present invention configured as described above rapidly decomposes organic materials by injecting air into the ground to activate aerobic microorganisms in the ground.

Degradation rate of aerobic microorganisms is superior to anaerobic microorganisms and does not produce odor-producing substances. Therefore, if an active environment for aerobic microorganisms is used as a nutrient for organic substances in landfills, The rate of degradation is accelerated, enabling early stabilization of landfills and accelerating the cleanup of contaminated soil.

When the power is supplied, each solenoid valve 53, 55, 58 is in the standby state, and when the device is operated, the first solenoid valve 53 is opened to discharge the high pressure air from the high pressure air supply 52 to the surge tank. Is injected into 59. When the pressure set in the surge tank 59 is reached, the first solenoid valve 53 is closed by the sensor of the pressure switch 51, and the third solenoid valve 58 is opened after about 3 to 4 seconds.

Therefore, the air of the surge tank 59 is moved to the underground air injection pipe 70 through the air distribution device 60 and is discharged momentarily through the hole 72 of the end portion of the underground air injection pipe 70. Therefore, a small explosion occurs at the end portion of the underground air injection pipe 70, so that an air flow path having a predetermined radius is formed around the end portion of the underground air injection pipe 70.

When the third solenoid valve 58 is opened and about 5 to 6 seconds have elapsed, the second solenoid valve 55 is opened and low pressure air is continuously supplied. This time may vary depending on the site conditions and the characteristics of the landfill waste. 1 minute to 15 minutes). At this time, while checking the flow meter 56, the flow control valve 57 is adjusted to set the flow rate so that appropriate air is injected. In addition, by adjusting the rotational speed of the drive motor 62 of the air distribution device 60, while sequentially supplying air to a series of underground air injection pipe 70, the air supply time is adjusted.

When the low pressure air supply time ends, the second solenoid valve 55 and the third solenoid valve 58 are closed and return to the initial state to continue to operate repeatedly. That is, by spraying the high pressure air instantaneously and the low pressure air for a predetermined time to periodically supply the high pressure and low pressure air to prevent the channeling of the air (Channel) can be maintained more efficient oxygen transfer radius.

The central control system is operated by setting the number of sets to operate the air supply device 52, 54, the air distribution device 60 and the underground air injection pipe 70 in accordance with the site area of the application target. The central control system inputs the measurement values of each measuring instrument to the computer through the interface device, and the operation of each solenoid valve 53, 55, 58 and the adjustment of the operating period are controlled according to a program embedded in the computer.

Therefore, aerobic microorganisms multiply by using oxygen in the air supplied through the underground air inlet pipe 70, and the organic matter in the landfill is rapidly decomposed, thereby enabling early stabilization of the landfill. Since the stabilized landfill has a certain level of ground strength to allow various facilities to enter, the landfill can be used for early recycling of the landfill.

Thus, the contaminated soil purification apparatus according to the present invention can activate the aerobic microorganisms to accelerate the decomposition rate of the organic material to stabilize the landfill early to advance the availability time, and improve the soft ground of the landfill area, stabilized soil There is an advantage that can be reused as cover material of landfill.

In addition, since organic nutrients are decomposed in the ground and processed using aerobic microorganisms that live in a natural state, they do not require a separate site for reprocessing, such as re-excavation, and do not cause other environmental problems. There is another advantage.

In addition, by using air of high pressure to precede air fracturing, it is possible to inject air from firmly hardened soil and prevent the flow phenomenon that can be generated by continuous operation. It is another advantage that the high and low pressure injection cycles can be stabilized to the optimum conditions according to the properties of the facility, thereby being able to actively cope with changes in the properties of certain landfills.

Claims (11)

A high pressure air supply device for supplying high pressure air, a low pressure air supply device for supplying low pressure air, a surge tank for temporarily storing air supplied from the high pressure air supply device and the low pressure air supply device, and in the surge tank A plurality of underground air injection pipes for supplying the discharged air into the ground, an air distribution device for distributing air discharged from the surge tank to the underground air injection pipes, and a pipe between the high pressure air supply device and the surge tank. A first solenoid valve, a second solenoid valve provided in a pipe between the low pressure air supply device and a surge tank, a third solenoid valve provided in a pipe between the surge tank and an air distribution device, and the high pressure air supply device and a surge Pressure switches installed between the tanks and attached pressure gauges, and remote control of each device Polluted soil remediation apparatus according to claim consisting of. The method of claim 1, A flow meter for regulating the flow rate of air is installed between the second solenoid valve and the low pressure air supply device, and a flow control valve for manual operation is installed between the flow meter and the second solenoid valve. . The method of claim 1, The air pressure of the high pressure air supply device is 3 ~ 5 kg / ㎠, the air pressure of the low pressure air supply device is 0.1 ~ 1 kg / ㎠, polluted soil, characterized in that the pressure can be adjusted according to site conditions Purification device. The method of claim 1, The surge tank is equipped with a pressure sensor for sensing the pressure inside the tank on one side thereof, polluted soil purification apparatus characterized in that it is provided with an automatic pressure discharge device to automatically discharge the air in the event of excessive pressure. The method of claim 1, The controller is characterized in that the polluted soil cleaning device, characterized in that for opening and closing the solenoid valve in sequence according to the set value and the pressure sensor and the program at the time of supply of high pressure and low pressure air. The method of claim 1, The underground air inlet pipe is formed in a wedge shape so that its end is well grounded, a built-in vortex generating blade for increasing the inflow pressure of air, and a plurality of holes having different diameters are formed in the lower portion. Polluted Soil Purification Device. The method of claim 1, The air distribution device has a hemispherical casing in which an air inlet is installed at an upper side and a plurality of air outlets are formed at a lower side thereof, and is installed inside the casing and rotated by a drive motor so that air can be injected into only one air outlet. Polluted soil purification apparatus, characterized in that consisting of a rotating plate formed with an injection hole. The method of claim 7, wherein The drive motor is polluted soil purification apparatus, characterized in that the rotational speed can be adjusted. The method of claim 1, Each of the above devices is equipped with an interface device for monitoring the process, polluted soil purification apparatus characterized in that the computer of the control unit to control the respective parts through the interface device according to the underwater environment. The method of claim 9, An electrode sensor for measuring the environment of the ground is installed in the underground air inlet pipe, and the polluted soil purification device characterized in that it is possible to input / store the measurement value of the electrode sensor to the computer through an interface device. . The method of claim 9, And the control unit has a power cut-off device which stops the operation of the device at the same time as a warning when the measured value of each sensor installed in the device is greater than or equal to a set limit value.