KR101239260B1 - Chemical filtration capable of automatic backwash filter unit - Google Patents

Abstract

PURPOSE: A chemical filtration apparatus capable of automatically reverse-cleaning is provided to properly diffuse chemicals without generating dead zone in a filter layer by inserting air, and to automatically reverse-clean the filter by detecting foreign materials on the filter. CONSTITUTION: A chemical filtration apparatus(100) includes a filter housing(110), a filter layer(120), first and second air discharging units(130,140), an air compressor(150), an air controlling electronic valve(160), a chemical discharging unit(170), a chemical supplying pump(180), a chemical controlling electronic valve(190), and a reverse-cleaning controller. The filter layer is installed on the lower side of a chamber inside the filter housing. The chemical discharging unit is buried to the lower inside of the filter layer, and discharges chemicals to the upper inside of the filter layer. The chemical supplying pump supplies sodium hypochlorite into the chemical discharging unit. The filter layer is formed by successively laminating a gravel layer(121), a sand layer(122), an anthracite layer(123), and an activated charcoal layer(124). [Reference numerals] (AA) Air; (BB) Chemical; (CC) Backwash water

Description

Chemical filtration capable of automatic backwash filter unit

The present invention relates to a chemical filtration filter device capable of automatic backwashing.

In particular, by supplying air and chemicals (sodium hypochlorite) simultaneously to the media layer during backwashing of media, the organic material on the surface of the media is oxidatively decomposed to improve the life and processing efficiency of the media and also to the dead layer due to the air input. A chemical filtration filter device capable of automatic backwashing capable of unattended backwashing is possible because the chemicals are sufficiently diffused and the reaction rate can be accelerated without the generation of a zone, and the amount of air and chemicals can be automatically controlled during backwashing.

The filter used in the water treatment process is divided into simple filtration treatment and adsorption filtration treatment. According to the direction of the fluid flowing into the filter is classified into a downflow method flowing from the top to the bottom and an upflow method flowing from the bottom to the top, it can be divided into gravity and pressure type depending on the pressure.

Conventionally, the downflow filtration method of the type of filter which is simple in structure and is easy to operate is used. In the case of an open type filter having a long direction, it is common to determine the backwashing time by using a level gauge to increase the head caused by the increase in the filtration resistance. In addition, in the case of a pressure type downflow filter, a pressure gauge is installed on the influent pipe, and back washing is performed when the pressure increases above a certain value.

However, in the case of a small tower type gravity filter, the filter should be installed with a level gauge according to the increase of head to determine the backwashing time, but it is not easy to install in a small filter.

On the other hand, in the backwashing method of washing the filter layer filled in the filter, it is common to set a predetermined time interval and perform backwashing according to the interval, but when the backwashing cycle is set short, the amount of backwashing water increases. The consumption of the washing water is increased, and the filter medium is leaked to the outside, there is a large amount of loss of the filter medium and there was a problem that the backwash is not performed clean.

In addition, when the filter is operated for a long time, a microorganism and a slime layer are formed between the media, and in particular, if a tacky material is present in the fluid, they cause a mud ball phenomenon that aggregates in the media with the media in the filter. Therefore, the backwashing process may not be performed properly, and in the case of an open filter, a large amount of media may be lost to the outside.
On the other hand, when looking at the water treatment filtration device using a repeatable renewable water treatment filter material of Korean Patent Publication No. 10-2011-105224, it is disclosed that the air spray nozzles are installed, the prior patent is installed to cross the air spray nozzles As a result of cleaning by the vortex force, there is a difference from the present application, and since the installation area is narrow, the air can not be discharged through the filter medium as a whole, so the backwash effect is inferior.

The present invention has been made to solve the conventional problems as described above, the main object of the present invention is to oxidatively decompose the organic material on the surface of the media by supplying air and sodium hypochlorite simultaneously towards the media layer during backwashing media The present invention provides a chemical filtration filter device capable of automatic backwashing to improve the lifespan and treatment efficiency of the product and to sufficiently spread the chemical and spread the reaction rate without the occurrence of dead zone in the filter media due to the introduction of air. .

Another object of the present invention is to provide a chemical filtration filter device capable of backwashing so that backwashing is automatically performed by detecting a degree of foreign matter being caught in a filter medium.

Still another object of the present invention is to provide a chemical filtration filter device capable of automatic backwashing, which can automatically stop the backwashing process by detecting when the remaining amount of the drug in the chemical tank is less than the set amount.

According to an aspect of the present invention,
A filter housing having an inlet through which contaminated water flows in and a discharge port through which purified water is discharged, and a lower portion of the filter housing having a drain pipe at the same time that serves to discharge residual water and backwash water; A mediator layer disposed below the chamber of the filter housing; A chemical discharge part installed in the lower side of the media layer, horizontally installed at a length similar to a horizontal length of the media layer, and discharging a chemical to an upper side of the media layer; A drug supply pump for supplying sodium dental chlorate, which is a cleaning agent, to the drug discharge unit through a drug supply line connected to a drug storage tank; A chemical regulation solenoid valve installed on the chemical supply line to regulate and regulate chemical supply; Is installed above the drug supply line in the filter medium layer to discharge the air to serve to primarily diffuse the drug discharged from the drug discharge portion to the filter medium layer, and is installed horizontally with a length similar to the horizontal length of the drug discharge portion 1 air discharge; It is installed on the upper side of the first air discharge portion in the filter layer to discharge the air to serve to diffuse the drug away from the area of influence of the first air discharge portion to the filter layer, and similar to the lateral length of the first air discharge portion A second air discharge unit horizontally installed at a length; An air supply line having a branch pipe to supply air to the first and second air discharge parts, respectively; An air compressor for providing air to each of the air ejecting units through the air supply line; An air control solenoid valve installed on the air supply line to control and regulate the air supply; And backwash control means for controlling the medicine and the air to be automatically supplied and shut off.
The filter medium layer further comprises a gravel layer, a sand layer, an anthracite layer and an activated carbon layer are sequentially stacked,
It is installed outside the filter housing further comprises an electromagnet or permanent magnet for depositing iron contained in the contaminated water in the filter housing,
When the chemical supply pump is stopped, there is provided a chemical filtration filter device capable of automatic backwashing, further comprising a warning speaker or a warning light having an alarm function.

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In addition, the backwash control means of the present invention, the drug remaining amount detection sensor for detecting the remaining amount of the drug in the medicine tank; Contaminated water permeation pressure sensor for detecting the contaminated water permeation pressure of the filter medium; And wired or wirelessly connected to the medicine residual amount detection sensor, the contaminant water permeation pressure sensor, the air regulation solenoid valve and the chemical regulation solenoid valve, and according to the signal detected by the chemical residual amount sensing sensor, the remaining amount of the chemical in the chemical tank If the amount is less than the set amount, the medicine control solenoid valve is shut off, and if the remaining amount of the medicine in the medicine tank is greater than the set amount, the medicine control solenoid valve is opened; According to the signal detected by the contaminated water permeation pressure sensor, if the contaminated water permeation pressure is greater than the set pressure, the opening degree of the chemical regulation solenoid valve is increased, and if the contaminated water permeation pressure is less than the set pressure, the chemical Control the opening degree of the valve to be relatively small; And a control unit which controls the air control solenoid valve to close together when the chemical control solenoid valve is closed.

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The present invention, by supplying air and chemicals (sodium hypochlorite) at the same time toward the filter medium during backwashing of the filter medium to oxidatively decompose organic matter on the surface of the filter medium to improve the life and treatment efficiency of the filter medium, It is possible to diffuse the chemical sufficiently and to accelerate the reaction rate without dead zone occurring in the media layer.

In addition, the present invention can achieve automatic automation of backwashing by detecting the state that the foreign matter is stuck in the filter media to automatically backwashing is possible unmanned automation.

In addition, the present invention can detect the amount of chemical remaining in the chemical tank less than the set amount can automatically stop the backwashing process can be prevented in advance to operate the chemical supply pump unnecessary.

1 is an overall configuration diagram of a chemical filtration filter device capable of automatic backwashing according to the present invention.
2 is a main configuration diagram of a chemical filtration filter device capable of automatic backwashing according to the present invention.
3 is a control block diagram of a chemical filtration filter device capable of automatic backwashing according to the present invention.

Hereinafter, embodiments of the present invention are disclosed.

The disclosed embodiments are provided so that those skilled in the art can easily understand the spirit of the present invention, and the present invention is not limited thereto. Embodiments of the invention may be modified in other forms within the spirit and scope of the invention. As used herein, the term " and / or " is used to include at least one of the preceding and following elements. "On" other elements herein means that other elements are directly located on one element and that the third element is further located on the one element . Although each element or portion of the specification is referred to by using the expressions of the first and second expressions, it is not limited thereto. The thicknesses and relative thicknesses of the components shown in the figures may be exaggerated to clearly illustrate the embodiments of the present invention. In addition, the matters described in the attached drawings may be different from those actually implemented by the schematic drawings to easily describe the embodiments of the present invention.

1 is an overall configuration diagram of a chemical filtration filter device capable of automatic backwashing according to the present invention, and FIG. 2 is a main configuration diagram of a chemical filtration filter apparatus capable of automatic backwashing according to the present invention. 3 is a control block diagram of a chemical filtration filter device capable of automatic backwashing according to the present invention.

According to these drawings, the automatic chemical filtration filter device 100 of the present invention, the filter housing 110, the filter medium layer 120, the first and second air discharge unit 130, 140, the air compressor 150, air intermittent electrons The valve 160, the chemical discharge unit 170, the chemical supply pump 180, the chemical regulation solenoid valve 190 and the backwash control means 200.

Hereinafter, each configuration will be described in detail.

First, the filter housing 110 is a hermetic cylinder composed of a one body type, and the inlet 112 and the outlet 113 so that the contaminated water flows into the chamber 111 therein and the filtered filtrate are discharged. Each of them has a drain pipe 115 installed at the same time to serve as a residual water discharge and backwash water flows.

Here, an electromagnet or permanent magnet 114 for depositing iron contained in contaminated water may be further installed on the outer circumferential surface or the inner circumferential surface of the filter housing 110.

The media layer 120 is installed under the chamber 111 of the filter housing 110 to filter contaminated water in the chamber. The gravel layer 121, the sand layer 122, anthracite The layer ((Anthracite: 123) and the activated carbon layer 124 is configured to be sequentially stacked, but the order is not limited and may be reversed if necessary, in addition, the media layer 120 is the number of constituent layers In addition, it may be further increased or vice versa, which is variable depending on the degree of contamination of the contaminated water flowing into the chamber 111 and the type of contaminated water.

The filling rate of the filter layer 120 to the chamber 111 is preferably 40 to 60% of the total volume of the chamber 111. If the filling is below the above range, the filtration effect is lowered. If the filling is over the above range, the filtration effect is good, but the filtration efficiency decreases rapidly, such as the fluidity of the contaminated water is lowered and the filtration time is delayed.

On the other hand, the thickness of the media layer 120 and the particle size of each layer is not specified because it is determined according to the type and turbidity of the contaminated water.

The first and second air discharge parts 130 and 140 are buried in the middle portion of the media layer 120, and serve to inject air toward the media layer 140. The purpose of the air injection is to help the diffusion of the drug to be described later in detail so that the drug is evenly spread throughout the media layer 120.

Here, the first and second air discharge parts 130 and 140 are connected to the air compressor 150 through the air supply line 151 to pass each air through the air supply line 151 generated by the air compressor. It is dispersed and diffused into the filter medium layer 120 through the discharge parts 130 and 140. At this time, the larger the air pressure is injected through the air discharge unit (130,140), the better the diffusivity, but it is preferable to be injected at an appropriate pressure because an expensive air compressor to be applied accordingly.

The first and second air discharge parts 130 and 140 are horizontally installed to have a position difference in the vertical layer 120 in the vertical direction, and the first air discharge part 130 positioned at a lower portion primarily stores drugs. The second air discharge unit 140 plays a role of diffusing the drug is secondarily spread away from the area of influence of the first air discharge unit 130, the drug spreads across the entire media layer 120 It will help you.

The air supply line 151 is provided with a branch pipe 151a to separately supply air to the first and second air discharge units 130 and 140 having a position difference.

In addition, an air control solenoid valve 160 may be installed on the air supply line 151 to control and regulate the air supply from the air compressor 150 to each air discharge unit 130 or 140.

The chemical discharge unit 170 is buried in the filter medium layer 120, and the first air discharge unit 130 is disposed below the first and second air discharge units 130 and 140 so that the chemicals are transferred to the filter medium layer 120. By discharging, the organic material filtered in the filter media layer is oxidatively decomposed to improve the life and processing efficiency of the filter media layer. When discharging the chemicals, the air is discharged together, so that the chemicals can be discharged through the discharge pressure of the air. Evenly distributed to every corner of 120) can increase the backwash effect.

In addition, the chemical discharging unit 170 is connected to the chemical tank 182 via the chemical supply line 181 and the chemical supply pump 180, and thus the chemical tank 182 by the pumping force of the chemical supply pump 180. Drugs in the final will be discharged through the drug discharge unit 170.

At this time, the outlet 181a of the chemical supply line 181 is installed to enter into the drain pipe 115 configured at the lower portion of the filter housing 110, the direction of the outlet 181a is the drain pipe 115 It is preferable to install in the same direction as the entry direction of the backwash water flowing through the piggybacking on the inflow of backwash water so that the medicine is smoothly supplied.

And, on the chemical supply line 181 may be provided with a chemical intermittent solenoid valve 190 for regulating and adjusting the chemical supply from the chemical tank 182 to the chemical discharge unit 170.

On the other hand, the drug sprayed through the drug discharge unit 170 is to oxidatively decompose the organic material on the surface of the filter medium layer 120, sodium chlorite sodium (NaOCL) may be applied.

The sodium hypochlorite, also called sodium hypochlorite, is a colorless or pale greenish yellow liquid with a chlorine odor. Soluble in water and aqueous solution decomposes during storage to generate chlorine gas, so if it is stored for a long time, it will be ineffective as a disinfectant, so be careful about the storage period. Sterilization power is affected by pH and effective chlorine. The lower the pH, the stronger the sterilization, and the lower the sterilization by amino acids, proteins, sugars, and the like. In this application, it is preferable to use the diluted to 100ppm concentration to pH 8-9 in order to maximize sterilization power. It should be noted that sodium hypochlorite is highly corrosive, so it is preferable that the metal material is excluded from the inside of the filter housing 110. However, since the air supply line 151 described above has to be located inside the filter housing due to the structural characteristics of supplying air into the filter housing 110, chemical treatment is essential.

The backwash control means 200 is used for backwashing and includes a residual amount sensor 210, a hydraulic pressure sensor 220, and a controller 230.

The remaining amount sensor 210 is for detecting the remaining amount of the drug in the drug tank 182 in which the drug is stored, and any one of the capacitive type, the differential pressure type, and the float type may be applied. The capacitive type is a method of measuring the change of static electricity according to the change of the chemical level and converts it into the water level. The differential pressure method is a method of measuring the differential pressure according to the chemical level and converts it to the water level. The float type is the vertical movement of the float in the chemical tank. According to the method of measuring the water level.

The pressure sensor 220 is installed in each of the inlet 112 and the outlet 113 of the filter housing 110 serves to detect the water pressure of the corresponding sphere.

The controller 230 is connected to the chemical residual amount detection sensor 210, the hydraulic pressure detection sensor 220, the air intermittent solenoid valve 160 and the chemical regulation solenoid valve 190 in a wired or wireless manner, the chemical residual amount detection sensor In response to the signal of 210, the chemical remaining amount in the chemical tank 182 is detected in real time, if the remaining amount of the chemical in the chemical tank 182 is more than the set amount of the drug is a state-locked solenoid valve 190 If the remaining amount of the drug is less than the set amount, the state of the drug is almost exhausted, and thus, the drug control solenoid valve 190 is blocked and the operation of the chemical supply pump 180 is stopped to prevent unnecessary pump operation. do.

In connection with this, when the operation of the chemical supply pump 180 is stopped, the air compressor 150 also does not need to be operated, and is stopped together by the control signal of the controller 230.

On the other hand, when the drug supply pump 180 is stopped in the above, it is preferable that a warning speaker or a warning light having an alarm function is installed so that the device manager can immediately recognize it.

In addition, the controller 230 determines that the pressure difference sensed by each of the pressure detection sensors 220 at the inlet 112 and the outlet 113 of the filter housing 110 is smaller than the set value, and determines that the solenoid valve is chemically regulated. Blocking or blocking the supply of medicine by reducing the opening degree or supplying only a small amount, and on the contrary, when the sensed hydraulic pressure difference is greater than the set value, the opening degree of the chemical control solenoid valve 190 is increased relatively to increase the supply of medicine. Autonomous control to increase the backwash effect.

As such, the controller 230 automatically controls the supply of the medicine or the backwashing operation, thereby facilitating the management of the filtration filter device, and maximizing the backwashing effect by the air for evenly spreading the medicine and the medicine effective for backwashing. .

While the present invention has been described in detail with respect to specific embodiments, it will be apparent to those skilled in the art that various modifications may be made without departing from the scope of the present invention.

100: automatic chemical filtration filter device 110: filter housing
120: media layer 130: the first air discharge unit
140: second air discharge portion 150: air compressor
160: air control solenoid valve 170: chemical discharge part
180: chemical supply pump 190: chemical control solenoid valve
200: backwash control means

Claims (4)

A filter housing having an inlet through which contaminated water flows in and a discharge port through which purified water is discharged, and a lower portion of the filter housing having a drain pipe at the same time that serves to discharge residual water and backwash water;
A mediator layer disposed below the chamber of the filter housing;
A chemical discharge part installed in the lower side of the media layer, horizontally installed at a length similar to a horizontal length of the media layer, and discharging a chemical to an upper side of the media layer;
A drug supply pump for supplying sodium dental chlorate, which is a cleaning agent, to the drug discharge unit through a drug supply line connected to a drug storage tank;
A chemical regulation solenoid valve installed on the chemical supply line to regulate and regulate chemical supply;
Is installed above the drug supply line in the filter medium layer to discharge the air to serve to primarily diffuse the drug discharged from the drug discharge portion to the filter medium layer, and is installed horizontally with a length similar to the horizontal length of the drug discharge portion 1 air discharge;
It is installed on the upper side of the first air discharge portion in the filter layer to discharge the air to serve to diffuse the drug away from the area of influence of the first air discharge portion to the filter layer, and similar to the lateral length of the first air discharge portion A second air discharge unit horizontally installed at a length;
An air supply line having a branch pipe to supply air to the first and second air discharge parts, respectively;
An air compressor for providing air to each of the air ejecting units through the air supply line;
An air control solenoid valve installed on the air supply line to control and regulate the air supply; And
Includes; backwash control means for controlling the medicine and air is automatically supplied and shut off,

The filter medium layer further comprises a gravel layer, a sand layer, an anthracite layer and an activated carbon layer are sequentially stacked,

It is installed outside the filter housing further comprises an electromagnet or permanent magnet for depositing iron contained in the contaminated water in the filter housing,

The medicine supply pump further includes a warning speaker or a warning light to provide an alarm function when the stop is further included.
A chemical filtration filter device capable of automatic backwashing.

delete The method of claim 1,
The backwash control means,
Drug remaining amount sensor for detecting the remaining amount of the drug in the drug storage tank;
A water pressure sensor installed at each of the inlet and outlet of the filter housing to detect the water pressure of the corresponding port; And
Wired or wirelessly connected to the chemical residual amount sensor, the hydraulic pressure detection sensor, the air regulation solenoid valve and the chemical regulation solenoid valve, according to the signal detected by the chemical residual amount sensor, the chemical residual amount in the chemical tank is less than the set amount If it stops the drug control solenoid valve and stops the operation of the drug supply pump, and if the remaining amount of the drug in the chemical tank is greater than the set amount, the drug control solenoid valve is opened to control the drug supply pump to operate; If the water pressure difference sensed by the water pressure sensor is greater than the set value, the opening degree of the chemical control solenoid valve is increased. If the water pressure difference sensed by the water pressure sensor is less than the set value, the degree of opening of the medicine isolation solenoid valve is relatively small. To control; A control unit which controls the air control solenoid valve to close together when the chemical control solenoid valve is closed;
Chemical filtration filter device capable of automatic backwashing comprising a. delete

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