KR101638559B1 - Non-point pollution treatment facilities with filtering sludge - Google Patents
Non-point pollution treatment facilities with filtering sludge Download PDFInfo
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- KR101638559B1 KR101638559B1 KR1020150110544A KR20150110544A KR101638559B1 KR 101638559 B1 KR101638559 B1 KR 101638559B1 KR 1020150110544 A KR1020150110544 A KR 1020150110544A KR 20150110544 A KR20150110544 A KR 20150110544A KR 101638559 B1 KR101638559 B1 KR 101638559B1
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- sludge
- filtration
- filter
- air
- water
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/10—Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
- E03F5/101—Dedicated additional structures, interposed or parallel to the sewer system
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
- B01D24/02—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration
- B01D24/20—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration the filtering material being provided in an open container
- B01D24/26—Upward filtration
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/14—Devices for separating liquid or solid substances from sewage, e.g. sand or sludge traps, rakes or grates
Abstract
The present invention relates to the treatment of sludge which occurs during backwashing and water treatment of water treatment media. The present invention is mainly applicable to non-point pollution abatement facilities, but is not limited thereto.
The present invention further includes means for removing the sludge settled in the lower part of the non-point pollution abatement facility, wherein the means for removing the sludge comprises a pump, a sludge conveying unit A sludge filtration unit for solid-liquid separation of sludge conveyed by the sludge pipe, and a filtrate discharge pipe connected to the sludge filtration unit for discharging filtration water filtered and discharged through the sludge filtration unit. Discloses a pollution abatement facility, and proposes improved technical contents of the components.
This makes it possible to economically and efficiently treat sludge generated during the process of treating non-point pollutants or backwashing, and to facilitate maintenance.
Description
The present invention relates basically to a water treatment facility. More particularly, the present invention relates to the treatment of sludge that occurs during backwashing and water treatment of water treatment media. Water pollution sources are divided into point pollution source and non-point pollution source depending on the nature of water pollution source. The present invention is mainly applicable to non-point pollution abatement facilities, but is not limited thereto.
Concrete or asphalt paved areas, rainwater infiltration and reservoir function are reduced during rainfall, and materials with high contamination due to initial rainfall are discharged to nearby water systems such as sewage and rivers, which adversely affects the water system. This is called non-point pollution. Non-point pollution abatement devices such as infiltration facilities, storage facilities, and filtration facilities have been recently installed in order to deal with this non-point pollution source caused by initial rainfall.
Although the infiltration facilities and storage facilities called natural type nonpoint pollution abatement technology have a disadvantage that they have a good effect on installation, they occupy lots of sites, and there are many filtration facilities called device type nonpoint pollution abatement facilities together with natural type boiling point abatement facilities .
The disadvantage of filtration type nonpoint pollution abatement facility is that it requires maintenance such as periodic cleaning and replacement of filter media, which has the advantages of less site area and faster processing speed.
The nonpoint pollution abatement facility usually treats pollutants by initial rainfall of 2.5 to 15.0 mm / hour. Since then, the rainfall is generally clean, so it is discharged immediately without entering the nonpoint pollution abatement facility, Is backwashed by water or air, and the backwash water is transferred to the drainage pipe of the nearby area to be connected to the sewage disposal plant or the like, or drawn out by the dredging equipment and transported to the outside for treatment of the next rainfall, Lt; / RTI >
However, since the sewage treatment plants in Korea have a flow rate of three times as much as the sewage treatment capacity at the time of rainfall, the backwash water generated from the nonpoint pollution abatement facility is transferred from the abatement facility to the nearby sewer pipe There are cases where it is not agreed with the officials of the municipal governments managing the wastewater treatment facilities or the contractors of the consignment management companies when the wastewater treatment facilities are to be introduced into the wastewater treatment plant and the wastewater is not introduced into the wastewater treatment plant The dredging vehicle is required to vacuum-suck it and entrust it to the waste disposal company after drawing.
For this reason, the treatment of the backwash water and the internal wastewater generated in the nonpoint pollution abatement facility is a big concern for the maintenance of the nonpoint pollution abatement facility.
On the other hand, Korean Patent Registration No. 10-1288331 (Feb. The automatic backwash non-point pollution control apparatus includes a main body having a space formed therein, a filtration chamber formed in the upper end of the main body and having a plurality of longitudinal inflow passages formed therein and communicating with the outflow lines, A non-point pollution control apparatus comprising at least one floating filter material formed inside a chamber and cleaning means for cleaning the floating filter material formed in the filtration chamber, wherein the floating filter material has a slide hole formed therein And the cleaning means includes a cleaning inflow line formed at the lower portion of the floating filter medium and having air or washing water introduced thereinto and protruding from the cleaning inflow line, And a rotary spray tube inserted into the slide hole and formed with a plurality of upwardly bending spray nozzles And an automatic backwash non-point pollution treatment apparatus using floating filter media.
Such prior art has not disclosed a means for efficiently processing the sludge to be solved by the present invention described later, a means for maintenance of the filtration portion, a means for efficient and stable use of the pump, and the like.
In order to solve these problems, the present invention is to solve the above-mentioned problems, and it is an object of the present invention to provide a sewage pipe system for a sewage pipe system, which is capable of transferring backwash water to a nearby sewer pipe, It is not a costly treatment method such as consignment treatment by sludge dredging vehicle even in a site where it is impossible to transport it to a non-existent area or sewage treatment facility, and it is separated into a facility separate from the facility, and the treated water is appropriately treated, The object of the present invention is to provide a multipurpose non-point pollution abatement device by two-stage filtration which can dispose only sludge that is discharged and dried by an easy method.
In addition, a more efficient and stable pump system is disclosed in the above process.
In addition, various means necessary for maintenance of the filtration unit in the non-point pollution abatement facility are provided to facilitate maintenance.
It is also intended to provide means for enhancing the effect of backwash.
In order to solve the above problems, the present invention provides a non-point pollution abatement facility for filtering inflow water to be treated and discharging filtered water, wherein the nonpoint pollution abatement facility includes a filtration unit having a filtration unit, Wherein the filtration unit comprises an inhomogeneous filtration layer, a lower screen positioned below the inphase filtration layer and supporting the atmospheric filtration layer, and a lower screen positioned above the atmospheric filtration layer, Wherein the floating filter layer is floated between the upper screen and the lower screen during filtration of the water to be treated so as to exhibit a filtration effect, The inspection filtration unit is detachably pulled out from the filtration unit to check the condition of the filtration unit. And a check filter inserted in the check hole formed in the sub screen and positioned in the filter material collecting barrel to be inserted into the check hole. The outer wall of the filter material collecting barrel has a size Further comprising a guide pipe extending from the check hole to the inside of the filtration unit so that the check filtration unit can be pulled out from the check hole of the upper screen to check the state of the check filter media, The piping has a structure in which a through hole is formed in the outer wall and the filter material collection tube can be inserted into the inner wall of the piping. The apparatus according to claim 1, further comprising means for removing the sludge settled in the lower portion of the non- The means for removing the sludge comprises: And a pump for transferring the sludge to the outside by the power of the pump, wherein the pump is an air lift pump and extends to a lower portion of the nonpoint pollution abatement facility to inject pumped air introduced from the air lift pump blower And an air lift pipe for discharging the air to be pumped by the pumping air inlet pipe and the sludge to be treated to the outside, an air transfer pipe branched from the pumping air inlet pipe, The air lift pump blower according to claim 1 or 2, further comprising an air diffuser for blowing air from the air transfer pipe to inject the air, wherein the air flow of the air lift pump blower removes the sludge and desorbs contaminants from the filter. The non-point pollution facility is a means for removing the sludge, Further comprising: a pipe for conveyance, and the air lift pump the water pump starts to boiling point pollution facilities that can be operated simultaneously or selectively to the third aspect.
The present invention may further include a sludge filtering unit for solid-liquid separation of the sludge transferred by the pipe, and a filtered water discharge pipe connected to the sludge filtering unit for discharging filtered water discharged through the sludge filtering unit .
The inactive filtration layer is a light material floating in water because it has a specific gravity smaller than that of water. The fibrous filter material, the mineral including pearlite, the foaming material floating on the water by foaming the glass, the polymer material and the polyvinyl alcohol ) And the filter media.
And an observation window formed of a transparent material may be formed in part or all of the upper screen for maintenance of the invisible filtration layer.
The observation window may be a transparent acrylic material functioning as the upper screen.
The lower portion of the filter material collection tank may be pointed downward so that the filter material collection bin may be easily inserted into the filtration unit after the check of the check filter material, or a guide pipe extending from the through hole to the inside of the filtration unit, The guide pipe may have a through-hole formed in an outer wall of the guide pipe, and the filter medium can be inserted into the inner wall of the guide pipe, and the filter medium of the filter unit may not enter into the guide pipe.
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The present invention relates to a non-point pollution abatement facility, comprising: a back washing blower for injecting air into the nonpoint pollution abatement facility; an air transfer pipe for transferring the air injected from the blower; and an air filtering unit installed in the floating filter layer, And an air diffuser to remove contaminants in the inactive filtration layer by injection.
Wherein the sludge pipe is branched into a sludge discharge pipe for discharging the treated sludge to the outside and a sludge filtration floating inlet pipe connected to the sludge filtering unit, a sludge discharge valve is installed in the sludge discharge pipe, The sludge to be treated may be discharged to the water treatment facility or may be selectively filtered through the sludge filtration unit.
The sludge filtration unit is a downflow filtration system in which sludge to be treated flows from the sludge filtration inlet pipe and forms a flow from the top to the bottom, the sludge filtration housing having a top opened so that the sludge to be treated can be introduced; And a sludge filter net positioned in the housing and into which the sludge to be treated flows, wherein the sludge filtration housing is formed with a sludge treatment water discharge hole through which the sludge treatment water from which contaminants are removed by the sludge filtering net flows out.
The sludge filtration unit may further include a sludge treatment water filter for filtering the sludge treatment water discharged to the sludge treatment water discharge hole.
Wherein the sludge treatment water filter includes an outer net frame and a filter medium filled in the outer net frame, and the sludge treated water filtered by the sludge treated water filter is discharged to the filtered water discharge pipe have.
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According to the present invention, it is possible to economically and efficiently treat sludge generated during the process of treating non-point pollutants or the backwash process.
By providing a complex pump system, stable and efficient system operation is possible.
By providing various management means of the filtration unit, maintenance of the filtration unit can be made easier.
It is possible to prevent the filter portion from being contaminated again after the backwash by providing means for increasing the backwashing effect.
1 to 3 show a nonpoint pollution abatement facility according to an embodiment of the present invention. FIG. 1 is a conceptual cross-sectional view of a plane, FIG. 2 conceptually shows a cross section of a front surface, 2 is a sectional view taken along the line AA in Fig.
FIG. 4A is an enlarged view of the inspection filtration unit (part B in FIG. 2) of the nonpoint pollution abatement facility, which is one embodiment of the present invention.
FIG. 4B is a view showing a process of inserting the inspection filtration unit of the non-point pollution abatement facility, which is one embodiment of the present invention, into the filtration unit.
FIG. 5 is an enlarged view of a sludge filtering unit (part C in FIG. 2) of a nonpoint pollution abatement facility according to an embodiment of the present invention.
FIG. 6 is a view showing a process in which the object sludge is naturally dried by the sludge filtering unit, which is one embodiment of the present invention.
FIGS. 7 and 8 show a nonpoint pollution abatement facility according to another embodiment of the present invention. FIG. 7 is a conceptual cross-sectional view of a plane, and FIG. 8 conceptually illustrates a cross-sectional view of a front surface.
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. It is to be understood that the present invention is not limited to the disclosed embodiments, but may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, It is provided to inform.
The present invention relates to a water treatment facility. More particularly, the present invention relates to a sludge treatment and a combined pumping system that occur in backwashing and water treatment processes of water treatment media. They can be applied to various water treatment facilities. Hereinafter, a non-point pollution abatement facility will be described as an exemplary embodiment.
Basically, the present invention relates to a technique (or apparatus) for reducing the nonpoint source caused by initial rainfall occurring during rainfall, and a technique for filtering and discharging the water generated after the treatment of nonpoint pollutant. More specifically, the pollutant is filtered by an upward flow in a non-point pollution abatement facility, and the filtration tank is backwashed after the rain is over, thereby transferring the generated water in the facility from the lower part to the upper part of the facility, , The treated water is discharged, and the sludge is dried by gravity and dredged by manpower or equipment to dispose of it. Thus, non-point pollution abatement which makes it possible to more easily and economically dispose of impurities and sludge which are the by-products of the non- Facilities.
1 to 3 show a nonpoint pollution abatement facility according to an embodiment of the present invention. FIG. 1 is a conceptual cross-sectional view of a plane, FIG. 2 conceptually shows a cross section of a front surface, 2 is a sectional view taken along the line AA in Fig.
In the nonpoint pollution abatement facility that treats the nonpoint pollution caused by the initial rainfall, the backwash water and the lower sludge generated by the backwash at the end of the rainfall after filtration are transported through the sewer located nearby, It is also linked to facilities.
However, if the nonpoint pollution abatement facility can not be operated in connection with sewage disposal facilities for various reasons, it is inevitably required to be entrusted by dredged vehicles. If the backwash water and the lower sludge (hereinafter referred to as "sludge to be treated") generated after backwashing are filtered by the filtration facility installed in the nonpoint pollution abatement facility and the filtered water is discharged and only the sludge is dried It will be economical and efficient. In order to accomplish this, in the present embodiment to which the present invention is applied, the sludge to be treated is filtered in two stages in a downflow filtration facility, the filtered sludge is discharged, and the dehydrated sludge is naturally dried, It is a nonpoint pollution abatement facility.
First, the overall structure of the non-point pollution abatement facility and the treatment process of the object to be treated will be described, and the treatment of the object sludge will be described in more detail.
1, the water to be treated is introduced into the
As shown in the drawings, an embodiment of the present invention relates to a non-point pollution abatement facility installed in the ground. Generally, the non-point pollution abatement facility is installed in the ground, but is not limited to the case where the technical idea of the present invention is installed in the ground. In some cases, non-point pollution facilities may be installed on ground or surface structures. And any of the technical features of the present invention described below belong to the protection scope of the present invention. However, this embodiment shows that the present invention is installed in the ground as a representative embodiment to which the present invention is applied.
In the case of a small scale nonpoint pollution abatement facility, the amount of water to be treated and the quantity of backwashing are not so large, so it is possible to install internal facilities after assembling in the field with a prefabricated concrete box structure. The technical idea of the present invention can be applied regardless of the construction method of the facility.
The filtration tank of this embodiment is a bottom-up type filtration tank. The bottom-up type filtration tank includes an
This embodiment is characterized in that it comprises a
The lower screen and the upper screen of the present embodiment will be described in more detail. For example, the upper and lower screens are spaced apart by 80 cm or more, And the volume is reduced due to consolidation. Depending on the type of filter material, the volume of the filter material itself may be reduced or the gap between the filter material and the filter material may be reduced. However, even if the volume is reduced, proper filtration effect and filtration lineweight should be considered. In the case of this embodiment, even when the secondary filtration layer is compacted during water treatment, a height of 30 cm or more is formed.
On the other hand, management of the filtration part is essential for the filtration process. The term 'filter unit' used in the present specification corresponds to a 'filter', and it can be translated into 'filter unit', 'filtering unit', or 'filter unit' in Korean. As used herein, the term " filtration part " can be applied if it is used to remove contaminants in the liquid in any form. Backwashing of filter media (filter media, filter media, filtration materials) used in the filtration part is necessary.
In order to backwash the filtration unit at an appropriate time, the present embodiment has an
The present embodiment provides a means for identifying the inner state of the filtration unit separately from the above-mentioned observation window. That is, the observation window is capable of simply observing the appearance state of the filtration unit, while providing a means for extracting a part of the filter medium and performing sampling inspection.
To this end, some embodiments of the present invention include a
The maintenance filtration unit separates and withdraws from the main body of the filtration unit to confirm the state of the filtration unit. The inspection filtration unit includes an
In order to facilitate the process of separating the inspection filtration unit from the filtration unit and inserting it again into the filtration unit, the
The filtration unit in the upflow filtration tank is vertically installed and may be partitioned into a plurality of spaces by the filtration tank separation wall, if necessary. In this case, the filtration part of each partitioned space is separated from the filtration part of the side space, thereby being divided into a plurality of filtration parts. This can be advantageous for maintenance and the like.
The observation window and the inspection filtration unit will be described in more detail. In general, the upper screen has a screen-shaped metal structure having a circular or polygonal hole smaller than the filter medium. In order to observe the condition of the filter medium during operation of the facility, I can not help but open it and take out the media. Therefore, it is possible to observe the state of the filter material on the upper part of the filtration tank after backwashing in the operation of the facility by installing a reinforcing material by horizontally installing a part of the upper screen of the filtration tank with a transparent acrylic plate having a plurality of holes smaller than the filter material. The
In addition, the filter material in the upflow type filter can be opened by operating the screen when the filter material is replaced. However, in order to check the condition of the filter material during the normal inspection, it is necessary to remove a part of the screen and lift up the filter material. In order to solve this problem, a filter material reservoir having a cylindrical structure or the like is provided in a certain space of a corner portion of the screen in the inside of the filtration unit so that it can be quickly inspected if necessary. The above-described
The filtration tank of this embodiment employs an upward flow filtration method to enable backwashing using treated water on the top. However, the various embodiments to which the present invention is applied do not necessarily have a bottom-up filtration tank. The means for removing sludge, which is a feature of the present invention described below, can be applied to any water treatment facility for discharging sludge, and so is the combined pumping system.
As described above, in the present embodiment, the net-like screen supporting the filter media and the mesh-like filter media located at the upper portion of the filter media, which floats and is consolidated by the influent water (water to be treated) Screen. The filter medium of upflow filtration equipment should have a smaller specific gravity than water. Meanwhile, according to the embodiment of the present invention, an
The air diffusing pipe is configured to allow backwashing by air at the end of rainfall to the contaminants trapped between the inner gaps (air gaps between the filter material and the filter material) of the floating filter layer. Meanwhile, an
The pollutants desorbed by such backwash form sludge. Of course, sludge is formed in the nonpoint pollution abatement facility even in the process of treating nonpoint contamination. There is a need to discharge and treat them. To this end, the present embodiment is provided with the pump, the sludge pipe, the sludge filtration unit, the filtered water discharge pipe, and the like.
The sludge pipe is branched to a
The
The sludge filtration unit is a downflow filtration system in which a sludge to be treated flows in from the sludge filtration inflow pipe and flows from the top to the bottom. FIG. 5 is an enlarged view of a sludge filtering unit (part C in FIG. 2) of a nonpoint pollution abatement facility according to an embodiment of the present invention.
The sludge filtering unit includes a
The sludge filtering enclosure of the sludge filtering unit may be made of a stainless steel material for durability and maintenance, or may be a part of the structure of the nonpoint contamination reducing facility. The sludge filter can also be fabricated by wrapping a frame made of stainless steel with a mesh of fiber or vinyl material. Large sludge of the sludge to be treated is primarily filtered by the sludge filter net. The sludge treated water that has passed through the sludge filter net is secondarily filtered by the sludge treated
In the present embodiment, the sludge treated water filter causes the sludge treatment water to form a downward flow so as to be naturally filtered by gravity, so that the sludge to be treated is dehydrated by gravity. As a result, the sludge to be treated is naturally dried when several hours or days have elapsed after the termination of the rainfall, preferably withdrawn from the non-point pollution abatement facility by the
The sludge treatment water filter further comprises an outer mesh frame (236) and a sludge treatment water filter (234) filled in the inner mesh frame (236). The sludge treatment water filter And the sludge treatment water filtered by the sludge treatment water filter is discharged to the filtered water discharge pipe.
The external network frame is generally a cylindrical or hexagonal frame, and is of a net-like shape composed of air gaps smaller than the filter media, and the filter media (not shown) is filled in the inside thereof. The filter media charged in the outer net frame and filtering the sludge process water discharged to the sludge process water discharge hole may be various media, although not shown separately. For example, the filter material may be any one of functional materials capable of removing calcined oyster shells and phosphate ions, zeolite, pearlite, wooden piece, plastic filter material, foamed stone, foamed glass, volcanic stone, activated carbon, And may include one or more.
The sludge filtration unit is installed in the filtration tank in this embodiment. However, the technical idea of the present invention is not limited thereto, and it is intended to fall within the technical scope of the present invention when the technical features described in the present specification are included.
In the present embodiment, the sludge filtering unit is installed in the non-point pollution abatement facility, and is characterized by the two-stage treatment by the sludge filter network and the sludge treatment water filter described above. That is, the sludge filtration unit is a downflow type filtration apparatus, in which the backwash water and sludge are transferred from the pump at the lower part of the nonpoint pollution abatement facility and slowly filtered to discharge the filtered water to the existing discharge pipe, .
Hereinafter, the pump for discharging the sludge to be treated will be described. According to the present embodiment, the pump is an underwater pump. As described above, the present invention has a pump for discharging the sludge to be treated, and the submerged pump P1 can be applied to the pump. A pump may be installed outside the facility to remove the sludge to be treated.
Hereinafter, the pump will be described in more detail. FIGS. 7 and 8 show a nonpoint pollution abatement facility according to another embodiment of the present invention. FIG. 7 is a conceptual cross-sectional view of a plane, and FIG. 8 conceptually illustrates a cross-sectional view of a front surface.
The present embodiment is different from the above-described embodiment in that an air lift pump is provided. That is, the pump for discharging the object sludge to be treated is an air lift pump P2. The air lift pump extends to a lower portion of the non-point pollution abatement facility, and the pumping air injected from the air lift pump blower is injected. And an air lift pipe (290) for discharging the air injected by the pumping air injection pipe and the sludge to be treated to the outside. The air lift tube is a sludge conveying pipe. A valve or the like may be added as needed, and the air lift pump blower is controlled in a known manner.
In the case of a site where the electric capacity (water receiving capacity) is limited, the water pump is exposed to the air and is stopped for a long time, The sludge to be treated under the non-point pollution reduction facility can be transferred only by the wind pressure of the blower.
On the other hand, as described above, the sludge to be treated is discharged by the pump, but it is not preferable to rely solely on an underwater pump as in the previous embodiment.
The present invention relates to a method for treating a non-point pollution material, comprising the steps of treating a non-point pollution material, treating the object under the non-point pollution reduction facility formed during the process of removing pollutants by air backwashing through an air- The present invention relates to a technique for discharging sludge using a pump. More specifically, the sludge to be treated is transferred to sewage or wastewater pipelines located in the vicinity of the non-point pollution abatement facility by a conveying means (for example, a submerged pump) installed in the lower portion of the filtration tank (in the present embodiment, Or two-stage filtration through a sludge filtration unit installed in the inside of the facility. The conveying unit (underwater pump) is a forced conveying unit using electricity. Therefore, May not operate properly.
To cope with such a case, there is provided an apparatus capable of automatically transferring sludge without a submerged pump when a submerged pump failure occurs by using the power of a blower having a comparatively small fault even though the submerged pump is installed at the top of the treatment facility. This means that the air lift pump described above can be applied in parallel.
Although it is possible to consider providing additional facilities such as a plurality of pumps or spare piping, it is not economical considering the technical features of the present invention described later. The present invention intends to solve the above problems efficiently and economically through the air conduit and the blower, which are indispensable components for the operation of the air diffuser.
That is, as in the present embodiment, a backwashing blower for injecting air into the non-point pollution abatement facility already described in the first embodiment, an air transfer pipe for transferring the air injected from the blower, The air lift pump blower and the backwashing blower are connected to a single blower (not shown), and the air lift pump blower Can be configured. In the present embodiment, this is referred to as an air lift pump blower for the sake of convenience. And the pumping air inlet pipe is branched from the air transfer pipe. This is as shown in FIG. Known or well-known valves or electrical control parts that can be selectively applied as needed are omitted.
In this embodiment, the pumping air injection pipe is branched from the air transfer pipe for transferring air to the air diffuser installed in the filtration tank and extends to the air lift pipe.
As a result, the air lift pump can be further constructed by using a backwashing blower and an air transfer line for backwashing the inphase filtration layer. Such an air lift pump may be used as an auxiliary of the above-mentioned conventional underwater pump or may be used together at the same time. In addition, the air transfer pipe and the pumping air injection pipe must be provided with an
If the amount of air sent from the blower to the filtration tank and the amount of air sent to the air lift tube are not properly adjusted, the air can be blown to either one of the diffuser or air lift tube of the filtration tank. An air control valve is installed in the piping.
In order to eliminate the possibility that the desorbed sludge is caught again in the filter media, it is advisable to quickly discharge the sludge to be treated such as backwash water after the air backwashing of the filtration tank. The present invention proposes a method for simultaneously utilizing the underwater pump and the air lift pump described above.
Although the present invention has been described by way of specific embodiments, the present invention is not limited thereto. It is needless to say that modifications and variations are possible within the scope of the technical idea of the present invention.
10: inlet pipe
20: Outflow tube
P1: Submerged pump
P2: Error lift pump
100: Pretreatment tank
200: Filtration tank
210:
211: Inertial filtration layer
212: Lower screen
213: upper screen
214: Observation window
215:
216: Inspection Ball
216a: Guide pipe
217: Filter collector
218: Through hole
219: Inspection filter media
220: Sludge piping
221: sludge discharge pipe
221a: sludge discharge valve
222: Sludge filtration floating entrance
222a: Sludge filtration unit inflow valve
230: sludge filtration section
231: Sludge filtration enclosure
232: sludge filter net
233: Sludge treatment discharge hole
234: sludge treatment water filter
235: Draw rope
236: External network frame
240: Filtration water discharge pipe
250:
260: Air conduit
270: Backwash fan
280: Pumping air inlet tube
290: Air lift tube
Claims (18)
Wherein the non-point pollution abatement facility includes a filtration tank having a filtration unit,
The filtration tank is a bottom-up filtration tank,
Wherein the filtration section comprises an inhomogeneous filtration layer,
Further comprising: a lower screen positioned below the atmospheric filtration layer and supporting the atmospheric filtration layer; and an upper screen positioned above the atmospheric filtration layer to prevent the atmospheric filtration layer from flowing out, Wherein the floating filter layer floats between the upper screen and the lower screen during filtration of the water to be treated,
Wherein a part of the filtration part is a check filtration part which is detachably pulled out from the filtration part and installed so as to check the state of the filtration part,
Wherein the inspection filtration unit includes an inspection filter disposed in the inspection hole formed in the upper screen and positioned in the filter material collection tube passing through the filter medium to be inserted into the inspection hole,
A plurality of through holes are formed on the outer wall of the filter media collection tank so that the check filter media can not pass therethrough so that the check filter unit can be pulled out from the inspecting holes of the upper screen to check the state of the inspecting filter material,
And a guide pipe extending from the check hole to the inside of the filtration unit, wherein the guide pipe has a through hole formed in an outer wall thereof and a structure in which the filter sorter can be inserted into the inside thereof ,
Further comprising means for removing sludge settled at the bottom of said nonpoint pollution abatement facility,
The means for removing the sludge may comprise: A pump, and a pipe for transferring the sludge to the outside by the power of the pump,
The pump is an air lift pump. The pump is an air lift pump. The pump is an air lift pump. The pump extends from a lower portion of the nonpoint pollution abatement facility. The pump includes a pumping air inlet pipe for injecting pumping air introduced from an air lift pump blower, And an air lift tube for discharging the air to the outside,
An air delivery pipe branched from the pumping air inlet pipe; and an air diffuser installed in the filtration unit to receive air from the air transfer pipe to inject air,
The sludge is removed by air injection of the air lift pump blower, and the contaminants in the filtration unit are desorbed.
The air lift pump and the submerged pump can be operated simultaneously or selectively. The apparatus according to claim 1, wherein the submerged pump is a submerged pump.
Nonpoint pollution abatement facility.
A sludge filtration unit for solid-liquid separation of the sludge transferred by the piping, and a filtrate discharge pipe connected to the sludge filtration unit to discharge filtered water discharged through the sludge filtration unit.
Nonpoint pollution abatement facility.
The inactive filtration layer is a light material that floats in water because its specific gravity is smaller than that of water,
A fibrous filter material, a mineral containing pearlite, a foamable filter material floating on water by foaming the glass and having voids, a polymer material and a PVA (polyvinyl alcohol) filter material.
Nonpoint pollution abatement facility.
Characterized in that an observation window is formed in which a part or the whole of the upper screen is made of a transparent material for the maintenance of the floating filter layer
Nonpoint pollution abatement facility.
Wherein the observation window is a transparent acrylic material having the function of the upper screen
Nonpoint pollution abatement facility.
The sludge filtering unit
Characterized by further comprising a sludge treatment water filter for filtering the discharged sludge treatment water
Nonpoint pollution abatement facility.
The sludge treatment water filter includes an outer net frame and a filter medium filled in the outer net frame,
And the sludge treated water filtered by the sludge treated water filter is discharged to the filtered water discharge pipe
Nonpoint pollution abatement facility.
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| KR101865757B1 (en) * | 2017-12-06 | 2018-06-08 | 김기성 | Water treatment device for low impact development |
| KR101924316B1 (en) * | 2018-04-16 | 2018-12-03 | 주식회사물사랑이엔지 | Apparatus for Sewage Treatment using Membrane |
| WO2018236189A3 (en) * | 2017-06-22 | 2019-04-11 | 최재희 | Treatment method and treatment apparatus for livestock manure, livestock wastewater or livestock washing water using ceramic separation membrane |
| CN110759612A (en) * | 2019-10-12 | 2020-02-07 | 上海桓禹环境科技有限公司 | Resource utilization method for silt in rainwater storage tank |
| KR102616293B1 (en) * | 2023-02-17 | 2023-12-21 | 수생태복원(주) | A non-point pollution reduction facility including a pollutant desorption circulation device for media and a backwashing method using it |
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