KR20070068992A - Apparatus for opening and closing the entrance of river filteration system - Google Patents

Abstract

An apparatus for opening and closing an inlet of a river purification system is provided to prevent the damage of the river purification system and extend the life of the river purification system accordingly by intercepting alien materials in front of an inlet of the river purification system, and reduce the facility cost and increase dissolved oxygen by replacing a complicated conventional apparatus for opening and closing the inlet. An apparatus(100) for opening and closing an inlet of a river purification system comprises: a water level maintenance member(110) which forms a dam with respect to a flowing direction of river water, and can be expanded or contracted; a water level sensing means(120) installed on the water level maintenance member or in river water in front of the water level maintenance member to sense a water level of the river water; and a pressure adjusting means(170) connected to the water level maintenance member and the water level sensing means to generate a pressure for adjusting the volume or height of the water level maintenance member according to a signal sensed by the water level sensing means, wherein the water level maintenance member is expanded or contracted by the pressure adjusting means according to a water level of the river water so as to open or close an inlet(210) installed near the rear of the water level maintenance member.

Description

Apparatus for opening and closing the entrance of river filteration system}

Figure 1 is a side view showing the main portion of the inlet opening and closing device of the river purification facility by the conventional reverse contact oxidation method.

Figure 2 is a perspective view showing a state of use of the inlet opening and closing device of the river purification facility according to the present invention.

3 is a cross-sectional view taken along the line A-A 'of FIG.

Figure 4 is a perspective view showing the inlet opening and closing device of the river purification facility modified during flooding.

* Explanation of symbols for main parts of drawings *

100: inlet opening and closing device of the river purification facility 110: water level maintenance member

120: water level detection means 130: the first screen

140: second screen 150: support

160: pneumatic hose 170: pressure regulating means

200: waterway wall

The present invention relates to an inlet opening and closing device of a river purification facility, by opening or closing the inlet by the opening and closing device to block foreign substances that can be introduced into the inlet of the river purification facility, to prevent the damage of the river purification facility to prevent its life. It extends and increases the amount of dissolved oxygen in the river water, which contributes to the stream purification and the inlet opening and closing device of the river purification facility.

In general, rivers have a self-purifying ability in which organic matter contained in rivers is oxidized and decomposed by activities of microorganisms such as phytoplankton and protozoa. However, in recent years, pollution of rivers by drugs such as pesticides or domestic wastewater has caused the death of microorganisms capable of decomposing pollutants, thereby accumulating pollutants and accelerating river pollution. In order to prevent the spread of pollution and to purify the rivers, river purification facilities have been installed and operated upstream of the rivers.

The reverse contact oxidation method is mainly used for such a river purification facility. In this purification method, the river purification facility oxidizes and decomposes the foreign matters of the river water passing through the primary storage tank and the primary storage tank to collect the contaminated sludge and filter out the sludge. And a secondary storage tank for collecting and discharging the stream water passing through the contact oxidation tank.

The reverse contact oxidation method is a method of purifying water quality through sedimentation, adsorption, digestion by microorganisms, etc. by passing river water, sewage, etc. in a contact oxidation tank filled with gravel, crushed stone or various filter media.

At this time, charcoal and gravel are used as contact materials for river purification means built in the contact oxidation tank (Korean Patent Publication No. 93-23280), or waste concrete or waste tire is used (Korean Patent Publication No. 97-20976, No. 97-20977). However, these contact materials have a small porosity, so that the pores are easily blocked in the process of filtration, adsorption of contaminants, and attachment of microorganisms that degrade the contaminants. It is not anaerobic, and the lack of dissolved oxygen (DO) reduces the growth and proliferation of microorganisms that decompose contaminants, and consequently, there is a disadvantage that reduces the effectiveness and efficiency of river purification.

In particular, a water barrier is installed in the middle of the river in order to sufficiently flow the river water into the primary storage tank, the inlet through which the river water flows into the primary storage tank is installed in front of the bank, heavy sediments and sediments contained in the river water Contaminants, including the foreign matter settled in front of the bank by the reduced flow rate by the bank and concentrated in the inlet installed in front of the bank, flows into the inlet including the inlet of the stream purification facility to accelerate the closure of the contact re-pores, When there is a lot of rainfall, such as the rainy season in the summer, foreign matters flow into the inlet including the inlet, causing a breakdown of the river purification facility, and shortening its lifespan.

In order to solve this problem, Korean Patent Laid-Open Publication No. 1999-0024201 has been filed 'reservoir inflow channel and opening and closing system of the stream water purification facility by reverse contact oxidation method'.

Figure 1 is a side view showing the main portion of the inlet opening and closing device of the stream purification facility by the conventional reverse contact oxidation method.

As shown in Fig. 1, the reservoir inflow channel and the opening and closing system of the river water purification system are connected to a fume pipe 1, which is an inflow channel and a drainage channel of the storage tank, a water pipe 2, a river level sensor 4, and a river water level. Cable 11 for transferring the data detected by the sensor 4, the solenoid valve (5), the dew condensation preventer (6), the solenoid valve (5) which generates pressure when the detected water level is higher than the reference value The air outlet (7), which operates to open and close the water pipe opening and closing gate (8) installed on one side of the river water inflow channel and the discharge channel of the storage tank, is connected to the connector (10) by the shaft of the air cylinder (7). It consists of a suspension opening and closing water gate 8 for opening and closing the stream side end portion 21 of the sustain tube 2 including the sealing means 9.

The reservoir inflow channel and the opening / closing system of the river water purification system, when the water level of the river is high, the air cylinder (7) to close the suspension opening and closing water gate (8), the various foreign substances contained in the river water purification system There is an effect of preventing the inflow of the inlet, but the overall structure is complicated, there is a problem that the installation cost is expensive due to expensive hydraulic equipment and mechanical combinations, etc. When closing the stream end 21 of 2), there is a disadvantage that foreign matters between them can interfere with the closing of the suspension opening and closing gate 8 to cause problems in operation.

In addition, there is a problem that the sludge drawing facility and the sludge storage space for removing contaminants in the stream accumulated in the air gap of the contact material have to separately install the sludge storage inflow channel and the opening and closing system of the river water purification facility, to solve the sludge A sludge port or sludge chamber that replaces the storage space can be installed at the inlet or middle of the sludge-laden stream, but this also requires another facility for removing sludge deposited in the sludge port or sludge chamber. Therefore, the installation space must be secured in the river purification facility, and there is a problem in that construction cost and maintenance cost of the related device are increased.

In addition, the river water stored in the inlet of the river purification facility installed in the lower front of the dam in the conventional river purification facility of the reverse reverse contact oxidation method including the reservoir tank inlet and the opening and closing system of the river water purification facility is contaminants including various sediment deposited The amount of dissolved oxygen is reduced by a certain amount, and there is a problem that a separate air supply facility for supplying the amount of dissolved oxygen necessary for oxidative decomposition of contaminants is not required because the amount of dissolved oxygen required for purifying the stored river water is not sufficient.

The present invention prevents damage to the river purification facilities by blocking foreign substances that may flow into the inlet of the river purification facility in front of the inlet in advance, thereby extending the life of the river purification facility, and replacing the existing existing inlet opening and closing device The purpose of the present invention is to provide an inlet opening and closing device of a river purification facility that reduces costs and increases the amount of dissolved oxygen in the river water required for the purification of the river water.

The inlet opening and closing device of the river purification facility according to the present invention forms a dam with respect to the flow direction of the river water, the water level maintenance member capable of expansion and contraction; Water level detecting means installed in the river water in front of the water level holding member or the water level holding member to detect the water level of the river water; And pressure adjusting means connected to the water level holding member and the water level detecting means to generate pressure for adjusting the volume or height of the water level holding member according to a signal sensed by the water level detecting means. The water level holding member is expanded or contracted by the pressure regulating means to open and close the inlet installed near the rear of the water level holding member.

The water level holding member and the river water is preferably fixed to the bottom surface further comprises a support for supporting the water level holding member.

And a first screen installed above the water level holding member for filtering the floating water of the river water, and formed on an upper portion of the inlet port, and installed near the water level holding member and not caught from the first screen. It further comprises a second screen for filtering, wherein the unit frame of the second screen is preferably smaller than the unit frame of the first screen.

The water level holding member is preferably provided with an air passage through which air flows to enable expansion and contraction, and the water level holding member is preferably made of a rubber material.

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

Figure 2 is a perspective view showing a state of use of the inlet opening and closing device of the river purification facility according to the present invention, Figure 3 is a cross-sectional view of the AA 'line of Figure 2, Figure 4 shows the inlet opening and closing device of the stream purification facility modified during flooding Perspective view.

As shown in Figure 2, the inlet opening and closing device 100 of the river purification facility according to the present invention forms a dam with respect to the flow direction of the river water, the water level holding member 110, which is capable of expansion and contraction, the water level holding member ( 110 or the water level holding means 110 is installed in the river water in front of the water level detecting means 120 for detecting the water level of the river water, the water level holding member 110 and the water level detecting means 120 is connected to the water level detecting means ( In accordance with the signal sensed by the 120 includes a pressure adjusting means for generating a pressure for adjusting the volume or height of the water level maintaining member 110. In addition, the present invention may further include a support 150 for supporting the water level maintaining member 110, the first screen 130 or the second screen 140 to filter the floating water of the river.

As shown in Figures 2 and 3, the water level holding member 110 is in contact with the water channel wall 200 and the bottom surface through which the river water flows so as to be in contact with both sides and the bottom surface in the flow direction of the river water. Preferably, dams are formed to have watertightness at both sides and the bottom thereof, and an air passage 111 in a longitudinal direction is formed therein, and the elastic material may be expanded and contracted according to the amount of air in the air passage 111. It is preferably made of a rubber material. That is, the water level holding member 110 can withstand the sharp foreign matters contained in the river water can be damaged due to precipitation and contact in the front, and the outer surface is deformed by being swept by the river water so that the waterway wall 200 and the bottom surface and It is made of a rubber material including a synthetic rubber having a sufficient thickness, load and surface hardness of the elastic material so as not to fall in contact of the, and when the maximum amount of air is introduced into the air passage 111 to the fluid flow of the river water It is preferably made of a long cylindrical shape so that it is excellent in adaptability.

The support 150 is attached to the central portion of both sides of the water level holding member 110 that can be constructed so as to contact the bottom surface of the river water flowing, fixed to the bottom surface of the river water flowing the water level holding member 110 Firmly support

The water level detecting unit 120 is installed in the upper stream of the water level maintaining member 110 or the water level maintaining member 110 in front of the water level maintaining member 110, including a water level sensing sensor, so as to detect the level of the river water during rainfall and flooding, as described below. Sends a signal of the river level detected by the pressure control means 170 to be.

The pressure regulating means 170 is to generate a pressure (pneumatic) to adjust the volume or height of the water level holding member 110, the pressure control control unit and the pressure control control unit is operated by the water level holding member A high pressure air tank including a pneumatic motor pump (not shown) for injecting or discharging air from the air passage 111 of the 110, and storing the high pressure air generated by the pneumatic motor pump to be used for injecting air ( It may optionally include, and through the support 150 by the pneumatic hose 160 to communicate with the air passage 111 of the water level holding member 110 and the water level holding member 110 and Connected to the water level detecting means 120 so that the pressure regulator fisherman adjusts the volume or height of the water level maintaining member 110 according to the level of the river water. It is connected by furnace.

That is, the pressure regulating control unit receives a detection signal for the water level of the river water from the water level detecting means 120 and sends an operation signal to the pneumatic motor pump if the value of the signal is greater than or equal to the set value indicating the maximum limit water level. The water level retaining member 110, which is flatly deformed to close the inlet port 210 by discharging air existing in the air passage 111 of the water level holding member 110, and when the applied detection signal is less than or equal to the set value, According to the water level, the operation signal is sent to the pneumatic motor pump so that the upper part of the water level holding member 110 is positioned lower than the water level of the water within the range that the river water near the surface can be sufficiently introduced into the inlet 210. The volume or height of the water level maintaining member 110 is adjusted by discharging or injecting air present in the air passage 111 of the member 110.

The first screen 130 is a kind of filter in which a plurality of unit frames are combined. The first screen 130 is attached to the upper portion of the water level holding member 110 in the width direction of the river water, that is, in the longitudinal direction of the water level holding member 110. Light floats that do not settle in front of the holding member 110 is filtered out.

The second screen 140 is a type of filter composed of a plurality of unit frames smaller than the unit frame of the first screen 130, is installed on the inlet 210 of the river purification facility, the water level maintenance It is installed in the rear lower portion of the member 110 to filter out the floats that can not be filtered from the first screen (130).

Looking at the operation of the inlet opening and closing device 100 of the river purification facility including such a component as follows.

As shown in Figure 3, the river water is stored in front of the water level holding member 110 by the water level holding member 110 in close contact with the bottom surface flowing the river water, the water level of the river water is increased, thereby the flow rate is relatively As a result, the primary filtering is performed to settle the front lower portion of the water level maintenance facility 110 to prevent the particulate foreign matter due to gravity to enter the inlet 210.

The volume or height of the water level maintaining member 110 is increased by the pressure regulating means 170 so that the highest point of the water level maintaining member 110 is lower than the water level of the river water so that the river water formed with the primary filtering flows into the inlet 210. It is adjusted to flow down the river water while aeration with a free fall by the height of the water level maintenance member 110, the first screen 130 is made of secondary filtering to filter out the remaining light floats do not settle in the river water.

At this time, when the river water falls behind the water level maintaining member 110 via the first screen 130, the dissolved oxygen in the river water due to aeration naturally increases. This increased capacity of dissolved oxygen helps oxidize and decompose organic pollutants in stream purification facilities, requiring additional oxygen supplies in contaminated streams with biochemical oxygen demand (BOD) of 10 mg to 15 mg / L. It is possible to purify river water without water.

The river water in which the second filtering is performed passes through the second screen 140 formed of a unit frame smaller than the unit frame of the first screen 130 to filter out small foreign matter that the first screen 130 cannot filter. Third-order filtering is performed to filter out foreign substances.

Finally, a portion of the river water that has been filtered three times to the inlet 210 of the river purification facility located in the lower portion of the second screen 140 with foreign substances blocking the voids of the contact material inside the river purification facility are removed. It will flow in.

On the other hand, if the flow rate of the stream increases during summer rainfall or flood, the water level detection unit 120 detects the water level of the river water, the detected signal is sent to the pressure regulating means 170, the pressure in the pressure regulating means 170 If it is determined by the adjustment control unit and the determination result is equal to or more than a predetermined value, the air in the water level holding member 110 is drawn out of the water level holding member 110 through the pneumatic hose 160, and as shown in FIG. By reducing the volume or height of the member 110, and at the same time by closing the inlet 210 entering the river purification facility while the water level maintaining member 110 is in close contact with the bottom surface of the river water, foreign matter including earth and sand, various sediments and suspended matter It is prevented from entering the stream purification facility by reverse contact oxidation method.

On the contrary, when the flow rate of the stream is reduced, the reverse operation is performed as described above, and the water level maintaining member 110 is expanded to return to its original shape so that the inlet 210 is opened, and the river water flows into the inlet 210 to be purified. Will be made.

The present invention described above is not limited to the above-described embodiment and the accompanying drawings, and various substitutions, modifications, and changes are possible within the scope without departing from the technical spirit of the present invention. It will be evident to those who have knowledge of.

In the present invention, the water level holding member is installed in front of the inlet to precipitate heavy sediment and sediment in the river water in front of the water level holding member to strengthen the sedimentation of foreign matter through the primary retention of the river, and to filter the floating stream by the screen It prevents the inflow of foreign matters into the inlet of the purification facility and prevents the concentration of contaminants in the inlet including the inlet of the river purification facility.In the case of high water level such as flood, the inlet is prevented from entering the inlet. By closing, it is possible to prevent the damage of the river purification facilities due to the pollutants and to prolong the life of the river purification facilities.

In addition, the present invention can reduce the installation cost by replacing the inlet opening and closing device by the complicated mechanical hydraulic method of the existing river purification facilities as a simple opening and closing device of the inlet, and aeration of the river water by the water level maintenance member to generate a drop There is an effect that can increase the amount of dissolved oxygen required in river purification facilities.

Claims (7)

A water level holding member which forms a dam with respect to the flow direction of the river water and is capable of expansion and contraction; Water level detecting means installed in the river water in front of the water level holding member or the water level holding member to detect the water level of the river water; And And a pressure adjusting means connected to the water level holding member and the water level detecting means to generate a pressure to adjust the volume or height of the water level holding member according to a signal sensed by the water level detecting means. The water level holding member is expanded or contracted by the pressure adjusting means according to the water level of the river water to open and close the inlet installed near the rear of the water level holding member. Inlet opening and closing device of river purification facility. The method of claim 1, And a support fixed to the water level holding member and the bottom surface on which the river water flows to support the water level holding member. Inlet opening and closing device of river purification facility. The method of claim 1, Further comprising a first screen installed on the upper portion of the water level holding member for filtering the suspended matter in the river water Inlet opening and closing device of river purification facility. The method of claim 3, A second screen formed on an upper portion of the inlet and installed near the rear of the water level holding member to filter out suspended matter not filtered from the first screen; Inlet opening and closing device of river purification facility. The method of claim 4, wherein The unit frame of the second screen is smaller than the unit frame of the first screen. Inlet opening and closing device of river purification facility. The method according to any one of claims 1 to 5, The water level holding member is provided with an air passage therein for allowing air to flow to allow expansion and contraction. Inlet opening and closing device of river purification facility. The method of claim 6, The water level holding member is made of a rubber material Inlet opening and closing device of river purification facility.

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