KR200159128Y1 - Counterflow type water filter system - Google Patents

Abstract

The present invention relates to a high-flow upstream composite bed filtration device, a conventional upflow filtration device is filtered while the raw water introduced into the lower portion of the filter tank passes through the filter sand layer to remove the turbidity contained in the raw water, Some of the suspended solids floating in the filtration process and the fines of the filtrate generated during the cleaning of the filtrate are mixed up and have a drawback with the filtered supernatant, which makes it impossible to completely remove the organic matter contained in the raw water. In the present invention, the activated carbon adsorption filtration layer filled with granular activated carbon is installed on the sand filtration layer filled in the filtration tank, and the filtered water rising through the sand filtration layer. Is discharged through the activated carbon adsorption filtration layer, As well as the removal of the turbidity by the water as well as the various organic matter and filtrate fine powder floating along the upstream flow is completely adsorbed to provide a suitable blue water for tap water or industrial water.

Description

Upflow composite bed filtration device for advanced processing

The present invention relates to an advanced treatment filtration apparatus applied to an upflow filter, and in particular, an activated carbon adsorption filtration layer is provided on the upper side of the filter sand layer of the upflow filter to adsorb not only the turbidity contained in the raw water but also the residual organic matter. By eliminating the disadvantages of the upflow filter, and improves the taste, smell, color and the like relates to a high-flow upstream composite bed filtration device capable of producing blue water for drinking water.

As a general filtration method, a downflow filtration method for purifying water while passing raw water from the top of the filtration layer to the bottom, and conversely, an upflow filtration method for purifying water while passing the raw water from the bottom of the filtration layer to the top is widely known.

Among these, firstly, an unmanned automatic filter is widely used as a small filtration device to which the downflow filtration method is applied. This feeds raw water to the upper part of the filtration layer so that the raw water passes through the filtration layer such as sand or gravel. As the filtration process is repeated, the filtration resistance of the filtration layer becomes higher than the set value. Instead, the filtration process is automatically stopped, and backwashing is performed on the filtration layer.

Such unmanned automatic filter has to periodically stop the function of the filter for a certain time, and also due to the backwashing of the filtration layer, not only a large amount of dewatering occurs but also a loss of the filter thread upon discharge of the dewatering. .

Therefore, in recent years, as a small-scale (1,000 tons / day) filtration treatment facility for the purpose of treating a small amount of water and sewage, industrial water and recycling of discharged water, it is possible to perform filtration and washing of the filtration company at the same time. The upflow filtration device of the filtration tank type which does not generate a filtration stop state like a filtration device and a backwash water with large instantaneous flow rate is widely used.

The upflow filtration device is usually a raw water inlet for filling raw water to be processed into the lower and lower portions of the filtration tank filled with the filter yarn from the bottom to the upper middle in a cylindrical filtration tank (filtration tank) having a lower conical shape; Filtrate suction part is provided for suction washing of contaminated filter sand, respectively, and is connected to the purified water discharge part and upper part of the filtration layer through which the purified water is discharged through the filter sand layer upward. Filtrate recovery units for washing and re-injecting the inhaled contaminated sand are provided.

In the conventional upflow filtration apparatus configured as described above, when the raw water is introduced into the filtration tank through the raw water inlet, the introduced raw water is filtered while passing upward through the filter sand layer and is discharged to the external water purification tank through the purified water outlet. On the other hand, the filtrate contaminated during the filtration of raw water was continuously pushed down to the lower side of the filtration tank while being introduced into the inlet of the filtrate and washed, it was reintroduced to the upper side of the filtration layer through the filtrate recovery.

However, in the conventional upflow filtration apparatus as described above, the raw water introduced into the lower part of the filtration tank is filtered while passing upward through the filter sand layer so that the turbidity contained in the raw water is removed. In the process of ascending, some suspended solids and fines of filtrate generated during the cleaning of the filtrate are mixed up and there is a flaw that flows out with the filtered supernatant, which makes it impossible to remove the organic matter contained in the raw water, which requires high treatment. There were problems such as unsuitable water for drinking water and industrial water.

Therefore, the object of the present invention was devised in view of all the problems of the conventional upstream filtration device as described above, as well as the removal of the turbidity by the sand filtration layer, as well as the various organic matter and filter sand fines floating along the upstream flow. It is to provide an upstream filtration device for advanced treatment that can be adsorbed.

1 is a longitudinal sectional view conceptually showing the overall configuration of an upflow composite bed filtration apparatus according to the present invention.

Figure 2 is a longitudinal cross-sectional view showing in more detail the configuration for one embodiment of the upflow composite bed filter according to the present invention.

3a and 3b is a plan view and a longitudinal sectional view showing an enlarged installation state of the activated carbon adsorption filtration layer according to the present invention.

Explanation of symbols on the main parts of the drawings

100: filtration tank 110: filtration yarn layer

120: raw water inlet pipe 130: filtered yarn suction pipe

140: filtered yarn feed pipe 150: filtered yarn cleaning pipe

160: purified water outflow pipe 170: activated carbon adsorption filtration layer

171: strainer 172: support plate

173 granular activated carbon 174 angle

175 washer 176 nut

180: washing water discharge pipe 180a: discharge container

190: catch trap

The purpose of the present invention is to install an activated carbon adsorption filtration layer filled with granular activated carbon on the sand filtration layer of the existing upflow filter device, so that the filtered water rising through the sand filtration layer flows out through the activated carbon adsorption filtration layer. Can be achieved.

That is, the raw water inlet pipe and the filter yarn suction pipe are respectively connected to the lower and lower portions of the filter tank filled with the filter yarn to a predetermined height, and the filter yarn cleaning tube communicating with the filter yarn suction pipe is installed at the upper center portion of the filter tank. An upstream filtration apparatus for advanced treatment in which a purified water outlet pipe for outputting filtered supernatant to the outside while passing through a filtered sand is installed at an upper side thereof, and the filtered sand layer is upwardly disposed in a space between an upper end of the filtered sand layer and a purified water outlet pipe. There is provided an upstream composite bed filtration apparatus for advanced processing comprising an activated carbon adsorption filtration layer for adsorbing and removing various organic substances contained in the filtered supernatant and the finely divided filtrate. .

Hereinafter, on the basis of the accompanying drawings an upflow filtration device of the present invention for achieving the above object will be described in detail.

1 is a longitudinal cross-sectional view showing a conceptual view of the overall configuration of the upstream composite bed filter according to the present invention, Figure 2 is a longitudinal cross-sectional view showing a configuration of an embodiment of the upstream composite bed filter device according to the present invention in more detail 3A and 3B are plan and longitudinal cross-sectional views showing an enlarged installation state of the activated carbon adsorption filtration layer according to the present invention.

As shown in this, in the advanced processing upflow composite bed filtration apparatus according to the present invention is filled with sand to a predetermined height inside the cylindrical filtration tank 100, the filter sand layer 110 is formed, the lower portion of the filtration tank 100 And a raw water inlet pipe 120 and a filter sand suction pipe 130 are respectively connected to and installed at a lower end thereof, and the upper center portion of the filter tank 100 is suction-transmitted through the filter sand suction pipe 130 and the filter sand feed pipe 140. Filtration yarn washing tube 150 for washing the filter sand is installed, the upper one side of the filter tank 100 is introduced into the raw water inlet pipe 120 is purified water passing through the filter sand layer 110 purified outside In the upflow filtration apparatus provided with the purified water outlet pipe 160 for outflow to a tank (not shown), the upper space portion (S) formed between the purified water outlet pipe 160 and the filtered sand layer 110 is filtered. Various organic substances remaining in the purified water passing through the sand layer 110 Activated carbon adsorption filtration layer 170 for adsorption and removal of the vagina is installed.

A distribution pipe 121 is provided at an end of the raw water inflow pipe 120 extending to the lower center portion of the filtration tank 100, and several downward injection holes 121a are formed at the end of the distribution pipe 121. have.

In addition, the filter yarn suction pipe 130 installed at the conical lower end of the filter tank 100 is in communication with one end of the filter feed pipe 140 extending upward of the filter tank 100, the filter feed pipe 140 The other end of the) is in communication with the middle of the filter sand cleaning pipe 150, the filter feed pipe 140 is formed with a plurality of air inlets (141, 142) for injecting air during the transfer of sand.

The filter yarn cleaning tube 150 is provided such that its lower end penetrates the center portion of the activated carbon adsorption filtration layer 170 of the present invention to have a predetermined height from the upper end of the filter yarn layer 110, and several filtrations are formed therein. The thread catching pieces 151 are alternately installed, and the wash water drain holes 152 communicating with the wash water discharge pipe 180 are formed on the upper side of the filter yarn catching pieces 151 and the upper and lower inner circumferential surfaces of the wash water drain holes 152 are formed. Each side of the induction piece 153 is formed to be inclined downward toward the center of the filter sand cleaning pipe 170, the bottom of the filter sand cleaning pipe 170, evenly washed sand dispersed in the filter sand layer (110) Filtration yarn distributor 154 is installed to make it possible.

In addition, the inside of the filtration tank 100 in which the purified water outlet pipe 160 is formed is a collecting trap (Trough) 190 that flows out when the supernatant water passing through the activated carbon adsorption filtration layer 170 is out of the full water level. On the inside of the collecting trap 190, a drainage container 180a for temporarily flushing the washing water discharged after washing the filter yarn inside the cleaning tube 150 includes a drain hole of the filter yarn cleaning tube 150. Bar 152 is provided on the outside, the height of the water container 180a is formed higher than the height of the collecting trap 190 so that the washing water and the supernatant are not mixed.

The lower end of the discharge vessel (180a) is provided with a wash water discharge pipe 180 extending lower than the height of the wash water drain 152.

On the other hand, the activated carbon adsorption filtration layer 170 is fixed to the disk-shaped support plate 172 is installed on the filter sand layer 110 in the filtration tank 100, a plurality of strainers 171 vertically and horizontally at a predetermined interval, the support plate The upper surface of 172 is filled with granular activated carbon 173 by a predetermined height.

In the drawings, reference numeral 1 denotes a disinfectant mixing chamber of raw water, 131 is a drain pipe, 155 and 156 are an air separator and an air exhauster, 174 is an angle, 175 is a washer, and 176 is a nut.

The process of installing the activated carbon adsorption filtration layer of the present invention in a filtration tank configured as described above is as follows.

First, several angles 174 are alternately welded horizontally on the inner circumferential surface of the space S of the filtration tank 100, and a plurality of strainers 171 are fastened and fixed at equal intervals on the upper surface of the angle 174. After the fixed supporting plate 172 is welded and fixed, the granular activated carbon 173 is placed on the upper surface of the supporting plate 172.

In this case, in order to fix the strainer 171 to the support plate 172, the strainer 171 is inserted into each of the plurality of through holes formed in the support plate 172 so as to be fixed upward, and the screw portion of each strainer 171 The washer 175 and the nut 176 are fastened to fix the strainer 171 to the support plate 172.

In this embodiment, in order to form the activated carbon adsorption filtration layer according to the present invention, the angle 174 is fixedly installed on the inner circumferential surface of the filtration tank 100, and a plurality of strainers 171 are mounted on the top surface of the angle 174. After the support plate 172 is fixedly installed, the granular activated carbon 173 is filled in the upper portion thereof. In the present invention, the granular activated carbon 173 is purified by supernatant water having passed through the filter sand layer 110. It may be modified to have a variety of support structures within the range that does not rise higher than the outlet pipe 160 or does not descend to the lower end of the filter sand cleaning pipe 150.

On the other hand, using the upstream filtration device of the present invention configured as described above, the process of filtering the raw water to the blue water and the process of the back-washing device is as follows.

That is, when a predetermined amount of raw water is introduced into the filtration tank 100 through the raw water inflow pipe 120 and sprayed downward through the injection hole 121a of the distribution pipe 121, the injected raw water is filtered through the filtration tank 100. The turbidity is first removed while rising through the filter sand layer 110 of), and the first filtered supernatant is supplied to the support plate 172 of the activated carbon adsorption filtration layer 170 as the water level of the upper portion of the filtration tank 100 is increased. It is introduced into the activated carbon layer 173 through the mounted strainer 171, and ascends through the activated carbon layer 173 to completely adsorb and remove organic matter and filtrate fines contained in the supernatant. Since the blue water collected in the catch trap (190) is more than a certain water pressure when the water level is higher than the catch trap (190) is to flow out to the purified water outlet pipe (160).

On the other hand, while the filtration process for the raw water proceeds at the same time the backwashing process for the filter sand layer, such a backwashing process is as follows.

That is, the filtered filter contaminated during the filtration of the raw water continues to be pushed down to the lower side of the filter tank 100 is introduced into the filter sand suction pipe 130, the contaminated filter sand flowing into the filter sand suction pipe 130, the air injection pipe ( 141, 142 is pushed to the filter feed pipe (140) by the pressure of the air injected through the filter tank 100 is transferred to the upper side of the filter tank 100, the filter yarn transported to the upper side of the filter tank 100 to the filter sand cleaning pipe (170) As it falls, it is placed on each of the filter yarn catching pieces 151 in turn. At this time, a part of the raw water ejected from the raw water inlet pipe 120 and passed through the filter sand layer 110 is activated carbon 173 through the strainer 171. It is not introduced into the filter medium instead of flowing through the lower end of the filter sand washing pipe 170 and the filter sand distributor 154 to wash the sand placed on each of the filter sand catching pieces 151 of the filter sand washing pipe 170 while flowing back. Let's go.

The filtrate thus washed again flows down along the filtrate yarn scrubbing tube 170 and is divided into two sides by the filtrate yarn distributor 154 to be evenly stacked on the top layer of the filtrate sand layer 110, while the lowermost portion of the filtrate sand layer 110 is formed. Filtration sand coming down is introduced into the filter yarn suction pipe 130 while the filtration process for the raw water as described above.

In addition, the supernatant introduced into the filter yarn cleaning tube 170 is backwashed with the sand of the filter yarn cleaning tube 170, and then guided to the drain port 152 by the drainage induction piece 153 to discharge the container 180a. ), And the washing water accumulated in the wastewater container 180a is drained to the outside of the filtration tank 100 through the washing water wastewater pipe 180.

As described above, the advanced flow upstream composite bed filtration apparatus according to the present invention includes an activated carbon adsorption filtration layer filled with granular activated carbon on the sand filtration layer filled in the filtration tank, and is filtered through the sand filtration layer. Is discharged through the activated carbon adsorption filtration layer, so that not only the removal of the turbidity by the sand filtration layer, but also the various organic matters and fine dusts which float along the upstream flow can be completely adsorbed and the blue water is suitable as tap water or industrial water. There is an effect that can be provided.

Claims (2)

The raw water inlet pipe 120 and the filter yarn suction pipe 130 are connected to the lower and lower portions of the filter tank 100 in which the filter sand layer 110 is filled up to a predetermined height, respectively, while the filter yarn is disposed at the top center of the filter tank 100. The filter pipe washing pipe 170 is installed in communication with the suction pipe 130, and the upper side of the filter tank 100, the purified water discharge pipe 160 for exporting the purified water to the outside while passing through the filter sand is installed altitude In the upstream filtration device for treatment, the upper portion of the filter sand layer 110 and the upper portion of the filtered sand layer 110 is included in the supernatant filtered primarily while passing through the filter sand layer 110 in the space (S). An upstream composite bed filter for advanced treatment, comprising an activated carbon adsorption filtration layer (170) for adsorbing and removing various organic materials and the filtered sand of the washed fine powder. The activated carbon adsorption filtration layer 170 has a plurality of strainers 171 through which the purified water passes through the filter sand layer 110 and is fixed to an upper portion of the inner circumferential wall of the filtration tank 100. An upflow composite bed filtering device for advanced processing, comprising a support plate 172 to be provided and granular activated carbon 173 mounted on an upper surface of the support plate 172.