KR102479290B1 - Water purification system with a prefabricated rain storage tank - Google Patents

Abstract

The present invention relates to a rainwater purification system capable of discharging rainwater or reusing the rainwater as domestic water and the like by purifying the rainwater stored in a rainwater storage tank by being connected to the rainwater storage tank storing the rainwater. According to the present invention, the rainwater purification system is divided to include: a retaining tank dividing the box-shaped rainwater storage tank storing the rainwater by multiple partitions erected in a horizontal direction into multiple sections and generating a flux lump by a coagulant; a flux filtering unit filtering the flux lump generated in the retaining tank; a microfiltration unit filtering a micropollutant from fresh water filtered by the flux filtering unit; and a fresh water storage unit storing the fresh water filtered by the microfiltration unit. The rainwater purification system filters the rainwater stored in the rainwater storage tank by using a fiber ball and the microfiltration unit. Therefore, the rainwater purification system discharges a part of the filtered rainwater and reuses the rest of the rainwater as domestic water by processing the rest of the rainwater with microfiltration.

Description

Rainwater purification system combined with a rainwater storage tank {Water purification system with a prefabricated rain storage tank}

The present invention relates to a rainwater purification system, and more particularly, to a rainwater purification system combined with a rainwater storage tank for storing rainwater to purify rainwater stored in the storage tank to a level higher than a standard value so that it can be discharged or reused as living water. It is an invention about

Due to the expansion of the building and pavement surface due to recent rapid urbanization and concentration, the amount of runoff of rainwater flows from the roof or pavement surface to a low area at once, causing flooding, resulting in frequent loss and flooding of the city center. there is.

This is due to logging, cement pavement, building installation, etc., which change the runoff coefficient and change the flow path, reducing the space for temporary retention of water, causing rainwater to flow into the river at once. .

In addition, flood damage is repeated in large cities due to abnormal climate phenomena and localized heavy rains, and water shortage is intensifying due to global warming.

Therefore, in recent years, rainwater is temporarily stored to prevent flooding. That is, rainwater flowing into the storage tank is allowed to stay for a certain period of time, and particulate matter is precipitated before being discharged back into the river.

However, various types of pollutants such as suspended matter, organic matter, nutrients, heavy metals, oil, etc. As this is introduced together, the water quality in the storage tank shows a high degree of contamination. Therefore, the storage tank only serves to prevent flooding by temporarily storing rainwater, but it is difficult to reuse the stored rainwater because the water quality is not good.

Therefore, recently, various methods for filtering rainwater have been proposed, and Patent No. 10-0842880 "Filter cartridge for initial rainwater treatment and initial rainwater treatment device" and Patent Publication No. 2009-0033680 "Waterwater treatment system" and rainwater treatment method" are disclosed.

However, the above technology only temporarily treats initial rainwater, and is not suitable for treating and reusing rainwater stored in a large-capacity storage tank.

Therefore, rainwater is collected from the initial source of each building and pavement and stored temporarily in a storage tank to secure water resources and prevent flood damage, and can be reused as living water, landscaping water, firefighting water, etc. It is necessary to provide technology that enables

Korean Registered Patent No. 10-0842880. Korean Patent Publication No. 2009-0033680.

The present invention provides a rainwater purification system in which rainwater stored in a storage tank is filtered, some is discharged, and some is finely filtered to be reused as living water.

In addition, the present invention has another task to enable easy cleaning when the filtration performance of the fiber ball is reduced.

In order to solve the above problems, the present invention divides a box-shaped rainwater storage tank for storing rainwater into several zones by a plurality of partition walls erected in the transverse direction, and a storage tank for generating floc lumps by a coagulant, A floc filtering unit for filtering the floc mass generated in the storage tank, a microfiltration unit for filtering fine contaminants from the filtered water by the floc filtering unit, and a filtered water storage unit for storing the filtered water filtered by the microfiltration unit. It is characterized by partitioning.

According to one embodiment of the present invention, the rainwater storage tank is provided with an inclined bottom surface so as to gradually decrease from one side to the other side in the transverse direction to facilitate washing of contaminants sunk on the floor, and rainwater storage on the high inclined bottom surface An induction wall of a predetermined height is erected in the longitudinal direction to be spaced apart from one side wall of the tank and positioned between the partition walls, and an induction path is formed in the longitudinal direction between the one side wall of the rainwater storage tank and the induction wall, and the induction wall A sluice gate is further provided to allow the washing water flowing into the induction path to be discharged to the inclined bottom side, a drainage passage is formed in the longitudinal direction at the end of the lower inclined bottom surface, and a sluice gate communicating with the drainage passage is further provided on the partition wall to allow washing water It is characterized in that it is discharged.

According to one embodiment of the present invention, the upper and lower portions of the floc filtration unit are partitioned by a lower filtering net fixedly installed between the partition wall and the partition wall, the lower portion is formed with an inlet space communicating with the storage tank, and the upper portion is formed with a filtering treatment space. In the filtration processing space, an elevating pressure net is installed so as to be able to move up and down by a primary cylinder, and a fiber filtration ball for filtering contaminants is accommodated between the lower filtration net and the elevating pressure net. to be

According to one embodiment of the present invention, the fiber filtration ball may be used higher or lower than the specific gravity of water, or a mixture of the two.

According to one embodiment of the present invention, a secondary cylinder is installed on the upper surface of the elevating pressure network, and a secondary elevating pressure network coupled to the rod of the secondary cylinder is coupled to the bottom surface of the elevating pressure network. It is characterized in that the secondary lifting and lowering pressure network operates vertically and upward separately from the lifting and lowering pressure network by the operation of the rod of the car cylinder.

According to one embodiment of the present invention, it is characterized in that a fine filtration net for secondary filtration of the water filtered by the fiber filtration balls is further coupled to the lower surface of the elevating pressure net and the secondary elevating pressure net, respectively.

According to one embodiment of the present invention, the microfiltration processing unit is provided with a plurality of tube-shaped microfilter units for filtering fine foreign substances contained in water, and the water filtered by the floc filtration unit is filtered through the microfilter unit. It is characterized in that a high-pressure pump for moving water at high pressure is provided, and a filtered water moving space for collecting and moving the filtered water filtered by the fine filter unit is provided.

According to one embodiment of the present invention, a hoist is installed in the upper machine room of the microfiltration unit, the hoist raises the microfilter unit and moves it to the washing room, and then, after washing foreign substances attached to the microfilter unit, the microfilter unit is fined again. It is characterized in that it is installed in the filtration processing unit.

The present invention has the advantage of reusing rainwater stored in the storage tank as living water by filtering the rainwater stored in the storage tank by the fiber ball and the microfiltration unit, partially discharged and partially subjected to microfiltration.

In addition, the present invention, when the filtration performance of the fiber balls is reduced due to filtration, pressurizes the fiber balls and raises the elevating pressure net to easily wash the fiber balls and then proceeds with filtration again, thereby securing high-quality filtration performance. there is.

1 is a schematic plan view in which a rainwater purification system combined with a rainwater storage tank of the present invention is partially cut away;
Figure 2 is a schematic side cross-sectional view showing a partially cut rainwater purification system combined with the rainwater storage tank of the present invention
3 is a schematic partial cut-away side cross-sectional view showing a state in which the microfiltration treatment unit is raised and moved to clean the rainwater purification system combined with the rainwater storage tank of the present invention.
Figure 4 is a cross-sectional view AA in Figure 1, a schematic transverse cross-sectional view of the rainwater purification system combined with the rainwater storage tank of the present invention
5 is a simplified cross-sectional view of a state in which a fiber filter ball is pressed for filtration by a floc filter in a rainwater purification system combined with a rainwater storage tank of the present invention.
Figure 6 is a simplified cross-sectional view of a state in which the elevating pressure net is raised to clean the fiber filtration balls of the floc filtration unit in the rainwater purification system combined with the rainwater storage tank of the present invention
7 is a partial illustrative view of an enlarged fine filter section in the rainwater purification system combined with the rainwater storage tank of the present invention and cross-section treatment.

Specific structural or functional descriptions of the embodiments of the present invention disclosed in this specification or application are merely exemplified for the purpose of explaining the embodiments according to the present invention, and the embodiments according to the present invention may be implemented in various forms. and should not be construed as being limited to the embodiments described in this specification or application.

Embodiments according to the present invention can apply various changes and can have various forms, so specific embodiments are illustrated in the drawings and described in detail in this specification or application. However, this is not intended to limit the embodiments according to the concept of the present invention to a specific disclosed form, and should be understood to include all modifications, equivalents, or substitutes included in the spirit and technical scope of the present invention.

Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The above terms are only for the purpose of distinguishing one component from another component, e.g., without departing from the scope of rights according to the concept of the present invention, a first component may be termed a second component, and similarly The second component may also be referred to as the first component.

It is understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, but other elements may exist in the middle. It should be. On the other hand, when an element is referred to as “directly connected” or “directly connected” to another element, it should be understood that no other element exists in the middle. Other expressions describing the relationship between elements, such as "between" and "directly between" or "adjacent to" and "directly adjacent to", etc., should be interpreted similarly.

Terms used in this specification are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, terms such as "comprise" or "having" are intended to designate that the described feature, number, step, operation, component, part, or combination thereof exists, but one or more other features or numbers However, it should be understood that it does not preclude the presence or addition of steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in this specification, it should not be interpreted in an ideal or excessively formal meaning. don't

The rainwater purification system of the present invention is combined with an already installed rainwater storage tank 100 or a newly installed rainwater storage tank 100 to store rainwater, and filters rainwater stored in the rainwater storage tank 100.

To this end, it is natural that the box-shaped rainwater storage tank 100 has an inlet through which rainwater flows in and an outlet for discharging rainwater stored in the rainwater storage tank 100 on the other side.

In the present invention, the inside of the rainwater storage tank 100 is partitioned into several zones by a plurality of partition walls 110 erected in the transverse direction. That is, it may be divided into a storage tank 120 for supplying a coagulant to generate floc lumps, a floc filtration unit 130 for filtering the generated flocs, a microfiltration unit 140, and a filtered water storage unit 150. At this time, it is preferable that each partition wall 110 has an opening formed at an upper end or a lower end, as necessary, to communicate with a region in contact with each other.

In addition, a separate machine room 200 may be further configured above the floc filtration unit 130 and the microfiltration processing unit 140 .

Here, a coagulant supply device 121 for supplying the coagulant is further coupled to the storage tank 120, and a screw 122 rotating at a predetermined speed may be further coupled to disperse and stir the supplied coagulant to increase coagulant efficiency. there is.

A portion of the middle portion of the rainwater storage tank 100 may be partitioned to form a floc filtering unit 130, and the floc filtering unit 130 is a space for filtering the floc mass generated in the storage tank 120. To this end, the upper and lower portions are partitioned by the lower filtering net 131 fixedly installed between the partition wall 110 and the partition wall 110, the filtering treatment space 132 is formed in the upper part, and the inflow into which the floc lump is introduced in the lower part. A space portion 133 is formed.

In addition, the filtering processing space unit 132 is connected to the primary cylinder 134 installed in the upper machine room 200 of the floc filtering unit 130, and an elevating pressure net 135 that moves up and down is installed. For this purpose, it is preferable that a roller or the like is coupled to the side of the elevating and descending pressure net 135 in contact with the wall surface. In addition, it will be natural that distribution holes for water to flow are formed in the elevating and descending pressure network 135.

At this time, a second lifting and lowering pressure network 136 may be further coupled to the lower portion of the lifting and lowering pressure network 135. To this end, a secondary cylinder 137 is further installed on the upper surface of the elevating pressure network 135, and the secondary cylinder 137 and the secondary elevating pressure network 136 are coupled to each other.

In addition, a plurality of fiber filtration balls 300 having a predetermined size are accommodated between the lower filtering net 131 of the floc filtering unit 130 and the lifting and lowering pressurizing net 135 of the upper part. The fiber filtration ball 300, as is well known, is formed by radially coupling thin fiber yarns to a central core to form a circular ball shape. Low polypropylene (PP) fiber yarns can also be used to make them float. In addition, the fiber filtration ball 300 made of polyethylene (PET) and the fiber filtration ball 300 made of polypropylene (PP) may be mixed and used.

In addition, a communication port 139 may be formed on the side of the lower inlet space 133 of the floc filter 130 to communicate with the storage tank 120 side.

On the other hand, a fine sieve 138 may be further attached to the lower surface of the secondary lifting and lowering pressure net 136. This is for secondary filtration of the water filtered by the fiber filtration ball 300.

Here, the microfiltration unit 140 is provided between the partition wall 110 and the partition wall 110 that partition one side of the rainwater storage tank 100 at the rear end of the floc filter unit 130 . Specifically, a blocking plate 141 is fixedly installed between the partition wall 110 and the partition wall 110 to partition the top and bottom, the microfiltration space 142 is formed at the bottom, and the filtered water moves at the top. A filtered water movement space portion 143 is formed.

In addition, a plurality of tube-shaped fine filter units 144 are installed on the blocking plate 141 in a form extending downward. The upper end of the fine filter unit 144 is screwed to the blocking plate 141 to facilitate coupling or separation. Then, the fine filter unit 144 may be configured by inserting and coupling an elastic body 144b such as a spring into a filter cloth 144a woven of a fiber material.

And, in the machine room 200, the water filtered by the floc filtration unit 130 is introduced into the lower microfiltration space 142 of the microfiltration unit 140 to be filtered by the microfilter unit 144. A high-pressure pump 145 is installed.

In addition, a cover part 146 is provided on the upper side of the microfiltration processing unit 140, and a crane 147 is installed in the machine room 200. After opening the lid 146, the fine filter unit 144 installed in the microfiltration unit 140 can be lifted up and moved to a separate space for cleaning.

On the other hand, in the present invention, the inclined bottom surface 111 may be formed to be inclined so that the bottom surface gradually lowers from one side to the other side in the transverse direction so as to facilitate cleaning of contaminants settled on the bottom surface of the rainwater storage tank 100. .

In addition, an induction wall 112 is erected at a predetermined height in the longitudinal direction to be spaced apart from the wall of the rainwater storage tank 100 on the inclined bottom surface 111 on the high side, and the induction wall 112 is connected to the partition wall 110. It is located between the partition walls 110. Therefore, an induction path 113 is formed in the longitudinal direction between the wall of the rainwater storage tank 100 and the induction wall 112, and between the wall of the rainwater storage tank 100 and the inclined bottom surface 111. A drainage channel 114 may be formed. In addition, an inclined wall 115 may be formed at a predetermined height along the inclined bottom surface 111 . In addition, it is preferable that the sluice gate 116 is formed on the guide wall 112 so as to be able to open and close.

Hereinafter, the working relationship of the present invention configured as described above will be described.

Rainwater flowing into the rainwater storage tank 100 through the inlet from a river or the like is first filled in the storage tank 120 of the rainwater storage tank 100 . In addition, the coagulant is supplied to the storage tank 120 by the coagulant supply device 121, and the coagulant is stirred by rotating the screw 122 at a predetermined speed to convert contaminants contained in rainwater into large flocs with a particle size of 1 mm or more. will create

The generated large floc mass sinks to the bottom due to its own weight, and the water moves to the rear side of the rainwater storage tank 100 beyond the partition wall 110. Then, it flows into the inlet space 133 side again through the lower communication port 139 of the flock filtering unit 130, and small-sized floc chunks are filtered by the fiber filtering balls 300 of the flock filtering unit 130. do.

At this time, the primary cylinder 134 of the floc filtering unit 130 operates, and while the lifting and lowering pressure net 135 descends, the fiber filter balls 300 filled between the lower filter net 131 and the lower filter net 131 are pressed so that they come into close contact with each other. do. Therefore, as the plurality of fiber filtration balls 300 are pressed closely, space is eliminated, and the rainwater flowing through the lower filtering net 131 is filtered by the fiber filtering balls 300 as flock lumps, and then the upper elevating pressurized net It passes through (135) and moves to the filtration treatment space (132).

On the other hand, in order to reduce the fatigue of the primary cylinder 134 by reducing the descending range of the primary cylinder 134, a secondary elevation and descent pressure network 136 may be further provided below the elevation and descent pressure network 135.

That is, after operating the secondary cylinder 137 to separate the secondary elevating pressure net 136 from the elevating pressure net 135, and then operating the primary cylinder 134 again, the elevating pressure net 135 When the is lowered, the operating range of the primary cylinder 134 is reduced while the secondary lifting and lowering pressure network 136 also lowers at the same time. Therefore, the length of the rod of the primary cylinder 134 can be reduced, fatigue is reduced, and accurate operation is achieved.

The water filtered by the fiber filtration balls 300 and moved to the filtration treatment space 132 is, by any chance, by the fine filtration net 138 provided in the elevating pressure net 135 and the secondary elevating pressure net 136. Secondary filtration is performed so that unfiltered flocs do not pass through.

The water from which the small-sized floc chunks are filtered through the floc filtration unit 130 is supplied to the microfiltration space 142 of the microfiltration unit 140 by the high-pressure pump 145, whereby fine foreign substances are filtered out. That is, the water introduced at high pressure into the microfiltration space 142 is filtered through the filter cloth 144a of the microfiltration space 144, and the filtered water is filtered into the upper filtered water moving space of the blocking plate 141. After moving to the unit 143, it is stored in the filtered water storage unit 150.

The filtered water stored in the filtered water storage unit 150 may be recycled as landscaping water or cleaning water, or may be re-discharged into the river to improve the water quality of the river.

On the other hand, foreign substances, etc., from rainwater flowing into the rainwater storage tank 100 may accumulate on the inclined bottom surface 111, and at this time, it is necessary to clean the foreign substances accumulated on the inclined bottom surface 111 of the rainwater storage tank 100. .

To this end, separate washing water can be supplied through the induction path 112, and the rainwater flowing along the induction path 112 flows to the end of the rainwater storage tank 100, and the water gates 116 provided on each induction wall 112 ) Flows down toward the inclined bottom surface 111 through. Therefore, foreign substances accumulated on the inclined bottom surface 111 are washed by the washing water flowing through the sluice gate 116, and then flowed down the inclined bottom surface toward the drain 114 and then discharged.

Further, in the present invention, a washing water supply pipe for supplying washing water may be further provided at the top of the floc filtration unit 130 and the microfiltration unit 140, and a discharge port for discharging filtered or washed foreign substances may be further provided at the bottom surface. may be provided.

100: rainwater storage tank 110: partition wall
111: inclined bottom surface 112: induction wall
113: taxiway 114: drainage
115: inclined wall 116: water gate
120: storage tank 121: coagulant supply device
122: screw 130: flux filtering unit
131: lower filtering net 132: filtration treatment space
133: inlet space 134: primary cylinder
135: lifting and lowering pressure network 136: second lifting and lowering pressure network
137: secondary cylinder 140: microfiltration unit
141: blocking plate 142: microfiltration space
143: filtered water moving space unit 144: fine filter unit
145: high pressure pump 150: filtered water storage unit
200: machine room

Claims (8)

The box-shaped rainwater storage tank for storing rainwater is divided into several zones by a plurality of partition walls erected in the transverse direction,
A storage tank for generating floc mass by means of a coagulant;
A floc filtering unit for filtering the floc mass generated in the storage tank;
A blocking plate is fixed between a partition wall partitioning one side of the rainwater storage tank at the rear end of the floc filtration unit and the partition wall to partition the top and bottom, the lower part is formed with a microfiltration space, and the upper part is formed with a filtered water movement space for moving filtered water, A microfiltration processing unit for filtering fine contaminants from the filtered water filtered by the floc filtering unit; and
It is partitioned to include a filtered water storage unit in which the filtered water filtered by the microfiltration processing unit is stored,
The rainwater storage tank is provided with an inclined bottom surface gradually lowering from one side in the transverse direction to the other side to facilitate washing of contaminants sunk on the floor,
An induction wall of a predetermined height is built in the longitudinal direction so as to be spaced apart from one side wall of the rainwater storage tank and located between the partition walls on the high side inclined bottom surface,
An induction path is formed in the longitudinal direction between one side wall of the rainwater storage tank and the induction wall,
The guide wall is further provided with a water gate for discharging the washing water flowing into the guideway to the inclined bottom surface,
A drainage channel is formed in the longitudinal direction at the end of the lower sloped floor,
The partition wall is further provided with a water gate communicating with the drain so that the washing water is discharged,
The floc filtration unit,
The upper and lower portions are partitioned by the lower filtering net fixedly installed between the partition wall and the partition wall, so that the lower part is formed with an inflow space communicating with the storage tank and the upper part is formed with a filtering treatment space,
A lifting and lowering pressure net is installed in the filtration processing space so as to be able to move up and down by the primary cylinder,
A fiber filtration ball, which is a polyethylene (PET) fiber yarn lower than the specific gravity of water, is accommodated between the lower filtering net and the ascending and descending pressurized net to filter contaminants,
A secondary cylinder is installed on the upper surface of the elevating pressure network, and a secondary elevating pressure network coupled to the rod of the secondary cylinder is coupled to the lower surface of the elevating pressure network. The lift-down pressurization network operates up and down separately from the lift-down pressurization network,
A fine filtration net for secondary filtration of the water filtered by the fiber filtration balls is further coupled to the bottom surface of the elevating pressure net and the secondary elevating pressure net, respectively,
The microfiltration treatment unit,
A plurality of tube-shaped fine filter units for filtering fine foreign substances contained in water are provided and coupled to the blocking plate,
The fine filter unit is inserted and coupled with an elastic material in a filter cloth woven of a fiber material,
A high-pressure pump is provided to move the water at a high pressure so that the water filtered by the floc filtration unit is filtered through the fine filter unit,
A filtered water movement space is provided for collecting and moving the filtered water filtered by the fine filter unit,
A hoist is installed in the upper machine room of the microfiltration processing unit,
After raising the fine filter unit by the hoist and moving it to the washing room,
A rainwater purification system combined with a rainwater storage tank, characterized in that the foreign matter attached to the fine filter unit is washed and then installed again in the micro filtration processing unit. delete delete delete delete delete delete delete

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