KR20060020780A - First flushing stormwater treatment and waterside creation by reservoir - Google Patents

Abstract

The present invention provides an initial rainfall runoff reservoir for the purification of nonpoint pollutants occurring in a development area such as a city to purify nonpoint pollutants and to use it for flood control and to use the reservoir as a hydrophilic facility. In this regard, by installing an excellent reservoir with a pond that maintains a constant water level at the bottom of the reservoir, the contaminated initial rainfall effluent generated during the rainfall in the development area is stored on a first-come, first-served basis, and stored in the reservoir. The pollutant is gradually discharged by filtering the installed filtration facilities to protect the water quality of the downstream waters and to have flood control effect. Also, the landscaping facility is installed on the reservoir banks and slopes, and the filtered water in the pond formed at the bottom of the reservoir in case of rain. Pump to supply clean water quality The present invention relates to a method and a device for utilizing a reservoir as a hydrophilic facility, which separates initial rainfall effluent and forms a stormwater sediment having a sedimentation function. Rainwater collection facility consisting of a screen facility to block the inflow of contaminants into the reservoir and a storage facility in which rainwater flows into the reservoir through the separation pipe in the rainwater chamber of the rainwater collection facility. A landscaping facility installed on a reservoir bank and a slope, and a gravity filtration system installed to purify the water of the reservoir and the pond, etc. installed on the pond to direct water change pipes on the bottom of the reservoir, and a collection of filtered water attached to the filtration facility. For supplying ponds of filtered water installed in facilities and collection facilities It consists of a water pump, a circulating water supply pipe, a pore contact medium storage facility installed for storing filtered water and further purification of soluble contaminants, and a supply pipe for supplying storage water to a pond in the storage facility, but functionally connected to each other. The efficiency is maximized.

Excellent reservoir, excellent initial rainwater, nonpoint pollutant, hydrophilic facility

Description

Method of using non-point pollutant purification and hydrophilic facility using rainwater reservoir pond and its device {First Flushing Stormwater Treatment and waterside Creation by reservoir}

1 is a plan view of the initial rainfall effluent storage facility according to the present invention

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

3 is a cross-sectional view taken along line B-B of FIG.

Figure 4 is a detailed cross-sectional view of the bottom pond and overflow wear room according to the present invention

5 is a plan view of a hydrophilic facility in the initial rainfall effluent storage facility according to the present invention

6 is a cross-sectional view taken along line C-C of FIG.

7 is a plan view of a storage facility of another embodiment according to the present invention.

8 is a cross-sectional view taken along line D-D of FIG.

※ Explanation of symbols used in main part of drawing

10: rainwater collection facility 11: rainwater silt

12: inflow pipe 13: storm discharge pipe

14: reservoir inlet pipe 15: sedimentation space

16: screen 20: storage facility

21: reservoir bottom 22: embankment

23: initial rainfall runoff storage level 24: flood level

25: slope 26: ground cover plants, aquatic plants

27: tree 30: pond

31: Overflow wear room 32: Outflow pipe

33: overflowware 34: reservoir storage water outlet

35: grating lid 36: circulating water outlet

40: filtration facility 41: filter bed

42: support layer for filter media 43: catchment hole

50: filtered water collecting facility 51: discharge pipe

52: hydrologic 60: pumping facilities

61: circulating water supply pipe 62: pump

70: pore contact medium storage facility 71: contact medium

72: overflow water pipe 73: influent feed container

74: storage water discharge pipe 80: distribution collection facility

81: collecting basin 82: circulating water inlet pipe

83: Hydrologic 90: Landscaping facility

100: underwater motor 101: valve

The present invention relates to a method and apparatus for purifying nonpoint pollutants and using a hydrophilic facility using rainwater reservoirs, and more specifically, to install a rainwater reservoir in a downstream part of a development area while maintaining a constant water level at the bottom of the reservoir. It protects the water quality of the downstream water by slowly discharging pollutants from the filtration facilities installed in the reservoir dams and storing the polluted initial rainfall effluent generated by the rainfall in the development area. At the same time, the present invention relates to a method and apparatus for using the reservoir as a hydrophilic facility by controlling the water quality of the pond by supplying the pumped water to the pond formed at the bottom of the reservoir in a rainy season and having a flood control effect.

The development of watersheds in the form of complexes, such as urban areas, leads to increased pavement area, reduced storage space, and straightening of the waterway, thereby increasing the flood flow, and also contaminants caused by human life and industrial activities, the use of equipment such as vehicles, and polluted air pollutants. Accumulated on these roads, these pollutants flow along with rainfall during rainfall, which adversely affects water quality and water quality in downstream waters.

In Korea, there are many excellent reservoirs that store the amount of flood caused by development in complex-type development projects.

However, these reservoirs have a flood control effect, but they have very little non-point pollutant purification effect and little hydrophilic function. Most reservoirs are left unused for normal use.

The method of installing a storm reservoir to control flooding includes the method of inflowing all of the effluents from the watershed into the reservoir depending on the water inflow method (the amount of inflow) and the method of introducing the peak flow above a certain level into the reservoir (the peak flow inflow method). There is this.

In addition, depending on the presence of water in the reservoir at all times, it is divided into a wet reservoir with some water in the reservoir and a dry reservoir without water even during rain.

In general, wet reservoirs are installed by the total amount of inflow method and dry reservoirs are formed by the total amount or peak flow inflow method.

These reservoirs installed for flood control have the following problems in the purification of nonpoint pollutants.

The reservoir of the total inflow method does not separate the initial rainfall effluent, which is highly polluted, is dilute with the total amount of water, and if it is rainy, if the reservoir capacity is small, the entire inflow cannot be stored and discharged, and during discharge, pollutants are discharged downstream. As the total flow rate flows in, the residence time in the reservoir is shortened and the water purification effect is small.

The reservoir of the peak flow inflow method has a low water purification effect because the high rainfall initial runoff does not flow into the reservoir but flows directly to the downstream water, and the peak flow is low.

Wet reservoirs, on the other hand, are reservoirs where water is always present in the reservoir, which includes landscaping, water supply, flood control and multipurpose reservoirs.

This wet reservoir may have a lot of rainwater during rainfall, but may stop flowing during non-rainfall, or some reservoirs may have a continuous flow of small amounts of river water.

In such wet reservoirs, if the drought ceases for a long time due to drought or if a small amount of river water is contaminated, the water quality of the reservoir becomes worse.

Since many contaminants are deposited on the bottom of the reservoir, when the water temperature rises, the sediment is anaerobic and smelled, the sediment is decayed, injured or formed, and algae are generated.

Algae is a plant that breeds photosynthesis using sunlight if there is nitrogen or phosphorus in the water. The algae are killed and settled on the bottom of the pond, and the carcass decomposes in anaerobic state and elutes nitrogen and phosphorus. Ponds lead to eutrophication through the cycle of algae generation, and when eutrophication occurs, a large amount of algae propagates on the water surface, resulting in various adverse effects.

In addition, floating debris such as vinyl, styrofoam, wood chips, fallen leaves, pollen, dust, and oil are floating on the reservoir surface. In doing so, it hurts the water changer.

In the United States and the like, many wet reservoirs are installed that receive all the rainwater from the watershed for flood prevention and nonpoint source management.

The reservoir is installed on a scale capable of storing 100-year rainfall to prevent flooding, and there is a pond that maintains a small flow rate at the bottom of the reservoir for water purification.

In this small pond, aquatic plants grow, and aquatic ecosystems are formed from various micro-animals and microorganisms, so when rain falls and rainwater flows into the reservoir, the pollutants contained in rainwater are purified to some extent.

However, because this reservoir must be very large, it requires a lot of site and construction cost, and there is little water purification effect by the pond, but it is irregular and uncertain, and the water quality of the pond is deteriorated when the inflow of water stops due to drought or inflow of polluted water. There is a problem of being lost.

At present, the flood control storm reservoirs installed in development projects such as housing complexes and industrial complexes are frequently installed as dry reservoirs.

This dry reservoir has a flood control effect, but it has little effect of purifying non-point pollutants. The small facility is installed as a recuperation facility. The large facility is an open reservoir, and the slope is covered with concrete blocks. There is also a lack of functionality.

On the other hand, Patent Registration No. 0437075 “Storage Rainwater Purification Method and Apparatus Using Reservoir” is a wet reservoir that separates and stores only the initial rainfall effluent out of the total rainfall effluent for purification of non-point pollutants. Is a method of filtering contaminants with a rainwater purifier installed in a reservoir, and it is possible to secure the sedimentation effect and easy installation of a filtration facility. However, since the operation of the reservoir must be batchwise, the water stored in the reservoir during rainfall is After a certain period of time, the gate should be opened and drained and the gate closed again.

In Korea, the number of rainfall days is about 50 to 100 days, so this process must be repeated for every rainfall. Therefore, it is difficult to operate the hydrology, and there is a risk that the floodgate will fail even if an automatic floodgate is installed. Maintenance work such as removal of water or replacement of rainwater purifiers is difficult.

In addition, various contaminants included in the initial rainfall runoff settle on the bottom or remain in the water in a floating state, which damages the landscape and worsens the water quality.When the water stops flowing into the drought and the water temperature rises, the water in the reservoir reaches the ground sediment. The water quality deteriorates, such as anaerobic or algae generation, eutrophication, odors, and pests.

This phenomenon reduces the hydrophilic function of the reservoir, and if left unchecked, the reservoir may become a loathing facility and become a place of refuge for the residents.

In addition, if the polluted water is directly discharged into the stream for the bottom of the reservoir, the stream is polluted.

As such, there are many rainwater reservoirs in the development area. However, these reservoirs do not separate the initial rainfall runoff and have a flood prevention effect. However, there is very little purification effect of non-point pollutants flowing out during rainfall. Because reservoirs are likely to contaminate water quality, these reservoirs are not utilized as hydrophilic facilities, and dry reservoirs that do not require water quality management also do not function as hydrophilic facilities.

In addition, wet reservoirs that store initial rainfall runoff have the effect of purifying nonpoint pollutants and preventing floods, but floating contaminants and algae remain in the reservoirs, resulting in deterioration of water quality and deterioration of water change pipes. It is difficult to maintain.

The present invention is to solve these problems, the object of the present invention is to install the initial rainfall runoff reservoir in the development area to use the reservoir as a non-point pollutant purification reservoir and at the same time used for flood control, and also during the rain rainfall the water reservoir It is to use as.

In order to achieve the above object, the present invention, the earth and sand bank reservoir

First, rainwater pollutants are installed to separate the initial rainfall runoff from rainwater pipes to clean non-point pollutants and prevent flooding. Rainwater can be separated into non-power storage and stored in the reservoir, and a filtration facility is installed on the reservoir bank to gradually filter and discharge the reservoir by gravity to clean up non-point pollutants and at the same time prevent flooding in downstream waters.

Second, in order to utilize the reservoir as a hydrophilic facility, the slopes of the earth and sand banks are gently formed, plants are planted on the slopes and the embankments, benches, observatorys, lighting facilities, etc. are installed, and ponds are installed at the bottom of the reservoir as a waterfront. In order to keep the water in the pond and to control the water quality of the pond, the filtered water from the filtering facility is supplied to the pond with a pump, and the polluted water and the floating pollutants in the pond are flown together to filter the suspended matter from the filtering facility. The purpose is achieved by repeatedly supplying and maintaining the water quality of the pond in good condition to utilize the reservoir as a hydrophilic facility.

When described in detail with reference to the accompanying drawings the configuration and effect of the present invention.

1 to 6 to separate the initial rainfall effluent and to form a rainwater toil chamber 11 having a settling function, the rainwater toil chamber 11 is an inlet pipe 12, rainwater discharge pipe 13 and tea collection Rainwater collection facility (10) having a storage facility inlet pipe 14 and the settling space (15) connected to the reservoir so that rainwater flows into the reservoir while having a function, and the screen facility (16) to block the inflow of contaminants into the reservoir, The rainwater collection facility in the rainwater collection facility 11, the storage facility 20 through which the rainwater flows into the reservoir through the reservoir inlet pipe 14, and installed on the bottom of the reservoir to produce a water change pipe, and the overflow wear room on one side. A pond 30 having a 31 formed therein, a gravity filtration system 40 installed on the reservoir 22 to purify the water of the reservoir and the pond, and the filtered water purified by the filtration facility 40 is stored therein. that the filtered water collecting facility 50, wherein the water filtered A filtered water collecting on the number of facilities (50) to move to where the air gap contact medium provided by the pipe to the circulating water supply pipe 61, the pumping facility is connected to 60, a number of rotation connected to the pumping facilities supply pipe 61 For collecting filtered water and further purifying soluble contaminants, the pore contact medium storage facility 70 is provided with a pore contact medium , and the water filtered in the pore contact medium storage facility 70 is distributed through the outlet pipe 71. A water collecting distribution system (80) for distributing water stored in the water (81 ) to the pond through the circulating water inflow pipe (82), and a shade film, a bench, a deck, and the like are installed on the dike 22 and the slope of the storage system 20. And it consists of a landscaping facility 90 formed by planting the ground cover plants, trees and the like .

The reservoir inlet pipe 14 installed in the rainwater discharge chamber 10 of the rainwater collecting facility 10 is installed lower than the rainwater discharge pipe 13.

The storage facility 20 forms a reservoir in which the slope is formed gently, and in the reservoir, the rainwater generated in the basin can flow into the reservoir as a natural runoff and the downstream portion of the basin that can discharge the rainwater introduced into the reservoir into a downstream body of water. Is installed on.

The pond 30 is formed using the whole or the bottom of the reservoir, but is formed in an elongated shape such as elliptical so that the floats can be moved by the circulating water, and the curved portion is streamlined so that there is no recessed area.

Gravity-type filtration facility 40 is formed of a bottom-closed structure to filter the water flowing into the reservoir during rainfall and the overflowed pond water from the overflowware installed at the outlet of the pond during normal rainfall and supports the media layer inside the structure. Then install the filter medium on top of the bottom of the filter medium 41 to form a layer, but the surface height of the layer is installed lower than the height of the overflow wear.

The pore contact medium storage facility (70) is made by digging a reservoir bank near the pond circulating water inlet, and filling the bottom and side portions, filling the contact medium with a large pore, covering the nonwoven fabric on the top, and storing the storage water outlet pipe. 74 and the overflow water pipe 72 are provided.

With the present invention configured as described above, the non-point pollutant purification and hydrophilic facility formation method using the rainwater reservoir is as follows.

The initial rainfall containing the contaminants gathers in the rainwater chamber 11 where the screen 16, which is the rainwater collecting facility 10, is installed, and the reservoir 20 and the pond 30 are stored through the reservoir inlet pipe 14. The water introduced into the reservoir and the pond 30 is moved to the filtration facility 40 on which the filter medium 41 such as gravel and crushed stone is laid and sent to the water collecting facility 50, and some of the water is discharged to the discharge water. Part of the discharged water is pumped to the pore contact medium storage facility 70 in which the pore medium is embedded through the circulation water supply pipe 61, and the circulating water introduced into the pore contact medium storage facility is purified and distributed while passing through the pore medium. It moves to the distribution collection basin (81), which is a collecting facility (80), and supplies it to the pond (30) formed at the bottom of the reservoir from the sump (81) so that the water in the pond is always kept purified water, while the pond (30) Water overflowed to the free fall into the overflow wear room (31) This operation is to be re-introduced to the filtration purification (40) of the repeatedly formed through the air outlet pipe 32. On the other hand,

The pond water quality is kept clean by the supply of purified circulating water so that the float does not remain in the middle of the pond and gathers to the outlet by the flow of water so that there is no elongated, recessed area like the oval shape. Planting trees, ground cover plants, etc. on the levees and slopes, and installing shade curtains, benches, lighting facilities, etc. to secure hydrophilic functions, purify nonpoint pollutants and create hydrophilic facilities.

If described in more detail the effect of the present invention configured as described above.

(1) Storage location

The location of the reservoir is to be the downstream part of the watershed, where rainwater from the basin can flow into the reservoir, and if possible, it can be discharged from the reservoir to the downstream.

That is, the bottom height of rainwater pipes or waterways should be different from the bottom height of the reservoir discharge pipe, and the larger the difference, the deeper the reservoir depth in the reservoir, thus securing a large amount of storage in a small area, and it is possible to discharge with natural oil.

However, if the difference is small, the reservoir depth will be lowered, so to increase the storage capacity, secure a large area or deepen the reservoir depth, but the water corresponding to the water level that is not discharged by natural flow should be pumped out.

The effective depth of flood control reservoir applied to the development project is generally about 2.0m.

(2) Rainwater collection facilities

The initial rainwater collecting facility 10 is a facility for separating the contaminated initial effluent water flowing out at the beginning of the rainfall from the rainwater flowing out during rainfall, and the rainwater pipe is installed with the manhole type rainwater toil chamber 11.

Rainwater inlet chamber 11 is rainwater inlet pipe 12, rainwater discharge pipe 13, the reservoir inlet pipe 14, the immersion space 15, the screen 16 is installed.

If the rainfall starts by installing the reservoir inlet pipe 14 lower than the storm drain pipe 13 in the storm drain chamber 11, the initial rainfall effluent flowing through the storm drain inlet pipe 12 into the storm drain chamber 11 is the reservoir inflow pipe. Preferred through the storage 14, the storage facility 20 is stored.

The storage capacity of the reservoir, which is the storage facility 20, is set up to be the size of the initial rainfall runoff, and since there is no free passage in the reservoir, when the reservoir is filled with the initial rainfall runoff, no more effluent flows into the reservoir, Through 13).

On the other hand, in the rain channel-type rainwater channel, a beam-type dropping facility is installed at the bottom of the channel, and an inflow pipe to the reservoir is installed in front of the dropping facility below the top of the beam to separate the initial rainfall outflow.

In areas where there is a lot of soil and contaminants, it is possible to increase or increase rainwater sediments or dropping facilities so that they have a sedimentation function. Do not flow in.

(3) reservoir

The reservoir is made by digging the ground or constructing the dike 22 with earth and sand. The reservoir bottom 21 is lower than the storm discharge pipe 13 or the bottom of the storm furnace, and the height of the reservoir 22 is the storm inflow pipe 12 or storm furnace. The storage space is secured at the same height as the ground level or higher than the flood level (24).

Install a reservoir inlet pipe 14 that flows into the reservoir from rainwater silos 11 or drop bottoms, and does not install it in the reservoir.

The reservoir is emptied normally, and when the outflow begins with rain, the initial rainwater enters the first-come-first-served reservoir with no power, and the storage level in the reservoir reaches the height corresponding to the height of the storm drain pipe (13) installed in the storm drain chamber (11). Going up

If the rainfall continues and the water level of the storm pipe rises, the storage level of the reservoir also rises to form a flood level 24. When the water level of the storm water pipe goes down, the water in the upper portion of the reservoir flows back to the storm pipe.

To prevent this backflow, install a non-return lid at the end of the inlet pipe on the reservoir side.

The size of the reservoir will be set up to store the initial runoff from the development area and, if necessary, to store the increased flood volume.

Domestic and international research shows that 70% to 80% of non-point pollutants are released from 5mm of initial rainfall, but it depends on various conditions, so it is necessary to store more than 5mm of spillage to collect more than 80% of pollutants. .

At the reservoir, the water level lower than that of the storm drainage pipe (13) of the storm drainage chamber (11) is the initial rainfall effluent storage water level (23), which corresponds to the initial rainfall effluent storage, and the discharge pipe of storm drain (11) ), The flood level of the flood level is the flood level (24), and the corresponding storage amount is the flood control amount.

The contaminated initial rainwater that has flowed into the reservoir is first filtered and discharged from the gravity filtration facility 40 installed in the dike at lower than the bottom of the reservoir, and the construction cost is reduced by reducing the filtration rate by reducing the size of the filtration facility. Inflow of initial rainwater can be stored in the reservoir, and by filtration and storage of the stored water gradually, flooding in downstream waters can be prevented.

The stored initial rainwater continues to be filtered when the discharge water level is low, but when the discharge water level is higher than the reservoir water level, the filtration discharge is stopped and when the discharge water level is lower, the filtration discharge starts again.

Particulate pollutants in the contaminated water stored in the reservoirs are sedimented and removed by gravity.

The degree of removal of contaminants by precipitation is determined by particle size, specific gravity, residence time, and depth.

As such, the present invention stores the initial rainfall effluent containing non-point pollutants to purify the contaminants by filtration and precipitation methods.

On the other hand, the steep slope of the manufacturing method can secure more storage capacity as the steep slope is inclined, but the slope is smoothed in consideration of the safety of the slope and its utility as a hydrophilic space. .

The dike 22 or the slope 25 is planted with aquatic plants, ground cover plants 26 or trees 27, which are resistant to grass or flooding, and installs a landscaping facility 90 such as a shade, bench, tech, stairs, and lighting. It should be used as a park green facility, and the planar shape of the reservoir should be considered the local conditions. When considering only the possibility of storage, the form of the shelter should be a simple form formed in a straight line. do.

(4) Pond creation

The reservoir bottom 21 is flattened and dug to form a pond 30, giving a slight slope towards the pond.

The overflowware room 31 having the overflowware 33 is formed at the upper end of the outlet 36 of the pond, and the outlet pipe 32 is connected to the filtration facility 40 in the overflowware room to filter the water of the reservoir with natural oil. Send to facility 40.

The reservoir storage water outlet 34 is formed on the upper ceiling of the wearware room 31 and covers the grating lid 35.

If the initial rainfall inflow to the reservoir is greater than the filtration rate of the filtration facility, the pond will be submerged and the pond will be filled only in normal times without rainfall.

The size of the pond can be made into the pond as a whole, or the pond can be made smaller, and the rest can be composed of a sports facility installation space and a play area, depending on the purpose of the reservoir as a hydrophilic facility. It is good to incline a little in consideration, and to cover and wrap.

The planar shape of the pond takes into account the hydrophilic function and aesthetic function of the reservoir, but in consideration of the water quality management aspect, it is elongated rather than circular or square behavior so that the circulating water can flow in the pond as a whole. This ensures that the float does not collect in the enclosed area but collects at the outlet along the flow.

However, when a closed area is inevitable, a circulating water or a submersible motor is installed to flow the suspended matter collected in the closed area.

The ponds should be constructed using slopes or concrete retaining walls, raft blocks, stone blocks, or natural stones.If necessary, safety fences should be installed, and the bottoms of the ponds should be made flat with water curtains, bentosoil, concrete, etc. Tilt toward the outlet 36.

(5) Pond Water Quality Management

Reservoirs are affected by their function as hydrophilic facilities, depending on the quality of the pond.

Pond water is stored in rainwater, so the water quality of the pond is related to the reservoir inflow water quality.

The quality of the initial rainfall effluent entering the reservoir depends on the degree of pollution of the road surface, and the degree of pollution on the road surface depends on the degree of cleaning due to the precipitation of pollutants accumulated on the road surface.

The degree of cleaning due to rainfall is related to rainfall and rainfall intensity, and depends in particular on the elapsed time of the preceding rainfall.

In other words, in Korea, the initial runoff of the first rainfall in spring is highly polluted, but the pollution of the initial runoff during the rainy season is low.

In the case of non-point pollutant runoff, when the runoff starts based on one rainfall event, the pollution level is initially high, but the water quality of the runoff is gradually lowered due to the gradual washing and increasing the quantity.

Therefore, if the rainfall is small, the polluted high effluent is generated and introduced into the reservoir, so the water quality of the pond is adversely affected.

However, if there is a lot of rainfall, that is, if the rain reaches more than the storage capacity, some dilute water flows into the reservoir, so that the diluted water is mixed with the water of the pond.

Therefore, the larger the reservoir capacity, the more dilute and less polluted water can be secured in the pond, and the greater the flood prevention effect.

On the other hand, the initial rainwater generated in the area where the pavement is heavily packed has relatively less soil and sediments, and the water quality of the pond is relatively improved in the case of Da rainfall when the soil is blocked in rainwater.

However, if the inflow water quality is bad and the drought continues, the water in the pond deteriorates, so the water in the pond or the water stored in the pond is filtered and pumped to the pond for water quality management. In order to obtain the circulating water inlet pipe at a distance from the circulating water outlet alone or distributed to install near the surface of the water, and install the overflow wear 33 in the circulating water outlet, such as algae, contaminants, etc. The floats are moved together to collect the circulating water outlet and fall with the water in the overflowware 33 to flow into the filtration facility 40.

At this time, if the amount of circulation supply is large, the moving speed of the float is increased and the circulation of the pond is also increased.

However, when the amount of circulating water is not good to move the float, install an underwater motor 100 that can generate a flow toward the outflow portion in water or install a blower to supply air.

Moreover, it is good to provide an outflow part toward the main wind direction as a method of using wind.

In general, water quality management in ponds with deteriorated water quality does not deteriorate if the suspended solids such as algae and side plants on the surface of water are continuously removed in the absence of any external source of inflow.

Abundant nutrients such as nitrogen and phosphorus in the water of stagnant water and high water temperature will cause aquatic plants and floating algae, such as frog rice and rice frog, to receive sunlight and multiply on the surface by photosynthetic action.

This phenomenon means that the nutrients such as nitrogen and phosphorus in the water has been transferred to these in vivo, so removing them from the body removes the nitrogen and phosphorus components in the water.

However, if they are not removed from the water bodies, they die and settle to the bottom, acting as an internal pollutant in which nitrogen and phosphorus are re-dissolved.

In the present invention, the suspended pollutant introduced from the outside, as well as the suspended matter such as algae, duckweed, etc. generated from the inside continuously or intermittently depending on the water quality of the pond, the state of floating matters, and also supplies a small amount of water by supplying filtered water As a result, the water quality of the upper layer of the pond can be maintained in a good state, and the reservoir can be utilized as a hydrophilic facility.

Also, sometimes removing the internal pollutants by removing the sediment at the bottom of the pond can ensure better water quality and reduce the amount of circulation water supplied.

When cleaning the bottom of the pond, it is possible to solve the pollution problem in the downstream water by pumping the pond water into the wear room using a pump or the like and filtration in the filtering facility.

(6) filtration facilities

The suspended matter dropped through the overflowware 33 flows into the natural oil into the filtering facility 40 together with the overflowed water.

The filtration facility 40 is used by extending the overflow wear room 31 or installed underground on the bank 22, the slope 25 or the bank of the bank 22.

The filtration method is gravity filtration and installs a filter bed support facility 42 in a bottom-closed structure and spreads the filter paper over the entire floor to form a filter bed 41 or a filter containing the filter to filter and filter the filter. Collected water is collected in the collecting facility 50 separated from the filtering facility through the collecting hole 43.

The deposits on the surface of the filter media layer 41 are not backwashed and are sometimes removed by manpower or replace the filter media.

Filtration media used for filtration include natural media such as sand, anthracite, zeolite and chaff, and processed and artificial media such as perlite, activated carbon and foam concrete.

As small size media such as sand occurs, surface filtration takes place while filtration removes sediment accumulated on the surface, and large media such as perlite and foamed concrete have large particle size and voids. Replace with

Since the filtration rate of the filtration facility becomes the discharge rate of the reservoir storage water quantity, the filtration rate is installed on a scale that can filter and discharge the reservoir storage water for 6 to 48 hours in consideration of the installation cost of the filtration facility and the time for flood preparation. Clear the reservoir between 6 and 48 hours to prepare for the next rainfall.

However, since the filtration speed fluctuates according to the degree of surface closure, the water gate 52 is installed in the discharge pipe 51 of the water collecting facility 50 to control the filtration speed. Used as

The installation height of the filtration facility is to set the height of the filter bed so that the stored water is filtered by gravity and the pond water flows through the weir by the circulating feed water and flows into the natural flow. .

However, where the location of the reservoir installation is low and where it is not discharged by natural runoff, the filtered water is pumped out.

(7) Filtrate Supply and Storage

In order to supply the filtered water to the pond for water quality management of the pond, the water pump 62 is installed in the filtered water collecting facility 50 to supply the filtered water.

On the other hand, the pump facility 60 can be used as a discharge pump in a region where the height of the bottom of the reservoir is low and is not discharged due to natural flow.

Since the filtrate water collecting facility 50 can be utilized as a filtrate storage facility, the filter water collecting facility 50 can be directly enlarged to a certain degree, and can be directly supplied to the pump 62 by burying the circulating water supply pipe 61 to the circulating water inlet. Apart from), it is possible to install the filtered water storage facility in the basement of the dike near the pond circulating water inlet and supply the filtered water to the storage facility with a pump, and then flow it into the pond as a natural oil from the storage facility.

Underground storage facilities are usually made of concrete structures, but when the initial water quality is poor or the quality of the pond is poor, gravel, crushed stone, pore-forming concrete products, and voids can be used to store additional filtered water. A pore contact medium storage facility 70 is installed to further purify soluble contaminants by the microbial membrane of the contact medium while buried the contact medium 71 having a large pore such as a plastic product in the ground and storing the filtered water therebetween.

The air gap contact medium storage facility 70 is made by excavating the ground and the bottom and side to be filled with a water-repellent film and the like after filling the contact medium 71, covering the non-woven fabric on the top and covered with earth and sand.

For plastic products, use products that are safe from overhead loads.

The circulating water supply pipe 61 connected by the pump 62 is connected to the inflow water supply tank 73 in the form of a perforated pipe at the upper part of the gravel bed storage space.

The height of the bottom of the pore contact medium storage facility 70 is higher than the bottom of the reservoir so that the water stored in the storage facility is supplied to the pond as a natural flow, and the storage water outlet pipe 74 and the distribution collection well for supplying the pond to the reservoir. 81) and install the pond circulating water inlet pipe 82 from the distribution collection basin 81 to the reservoir, but install the circulating water inlet pipe alone or in plurality according to the shape of the pond and the inlet. Install a water gate (83) or a valve in each pipe to enable water quantity control.

In addition, since the filtered water is supplied to the pump 62, the overflow water pipe 72 is buried in the upper portion of the storage facility 70 so that the filtered water supplied above the storage capacity flows into the reservoir, and this water may be used in the form of a waterfall or a mooring. You can direct a water changer.

As described above, the present invention purifies nonpoint pollutants by installing rainwater reservoirs, and at the same time, has a flood control effect and can also be used as a water quality management method of currently installed wet reservoirs, landscaping ponds, etc. It can be.

On the other hand, Figures 7 to 8 shows another embodiment in which the shape of the reservoir and pond according to the present invention is modified, the structure, method and effect of the purification of non-point pollutants are the same as described above.

An embodiment to which the present invention is applied will be described below.

Example 1 Residual Pesticide Removal and Pond Water Quality Management Method in Golf Course

When the present invention is applied to the pond of the golf course can be purified non-point pollutants during rainfall and can be applied to the water quality management method of the golf course pond in normal times.

In the golf course, fertilizers and pesticides are used for the growth of the grass. After rain spraying, these components flow out with rainwater and enter the pond, and these components flow downstream in the state without being sufficiently purified in the pond. Will adversely affect.

In addition, there are many nutrients such as nitrogen and phosphorus from fertilizers in the golf course pond, and the treated water from the sewage treatment plant where nitrogen and phosphorus is not sufficiently removed often flows into the pond, so when the water temperature rises, the algae thrive excessively. Will hurt.

When the present invention is applied to a golf course rainwater is stored in the upper storage space of the pond during rainfall, it has a flood prevention effect, non-point pollutants are purified through precipitation and filtration and residual pesticides are removed.

For effective removal of residual pesticides, adsorptive media such as activated carbon and zeolite are used in the filtration system.

In addition, it can be used as an effective water quality management method of the pond because it can prevent eutrophication by removing suspended matter such as algae in the pond during rain.

Example 2 Rainwater Recycling Method

In areas where water resources are scarce, rainwater becomes an excellent source of water, and this rainwater can be stored and used for various types of water.

When reusing rainwater in areas with large watershed sizes and land complexes, such as cities, it is recommended to consider both rainwater reuse and nonpoint pollutant reduction.

At present, the rainwater recycling method, which is being reviewed at home and abroad, attempts to exclude the initial rainfall runoff with high pollution and to store and reuse the relatively good water that flows out afterwards. A device is needed to exclude rainfall runoff, and at present, the device is expensive or inexpensive and is not reliable because of its low reliability.

However, in the present invention, the initial rainfall runoff can be collected first with no power to remove contaminants with the screen, and through the precipitation, filtration and microbial decomposition process, the pollutants are naturally purified, and the purified water is stored in a storage facility, and rainwater can be used as various water. At the same time, the quality of the discharged water can be protected.

Example 3 Non- discharge of Sewage and Method of Using Heavy Water of Sewage Treatment Water

The present invention can be utilized as a method of using no sewage of sewage or a method of using heavy water of sewage treatment water.

The zero discharge method refers to a method of continuously reusing sewage, such as domestic sewage, for the protection of water quality in downstream waters without discharging it into a river, etc., and the sewage water refers to reuse of sewage treated water as water.

In the sewage and sewage treatment plant, the treated water has been removed more than 90% of organic matter, but 20-40% of nitrogen and phosphorus are removed, and a large number of Escherichia coli survive.

Therefore, in order to use these treated waters as heavy water or discharge freely, advanced treatment is required, which requires a lot of facility and operation costs.

In sewage treatment, the cost of removing 90% of pollutants at low concentrations is much higher than the cost of removing 90% at high concentrations.

In addition, in the high processing, the operation and management costs are higher than the facility costs.

However, since the present invention purifies contaminants by a natural purification method, it is possible to obtain highly treated water at a low cost in the use of sewage in domestic sewage or in a non-discharge method.

When a pond is made of treated water that has undergone a general treatment process, algae are multiplied by the nitrogen and phosphorus components remaining in the treated water, and as time passes, they accumulate on the bottom, and they become anaerobic and the water quality deteriorates. Can not be used in heavy water.

However, if you make a pond with sewage treatment water and continuously remove floating matter such as algae in the same way as in the present invention, nitrogen and phosphorus components in the water are absorbed by the algae, so it is easy to remove nitrogen and phosphorus components in the water and E. coli. Germs are killed by UV rays in the pond and residual organic matter is removed by the absorption of microorganisms from the microbial membrane of the gravel layer, so that the sewage treatment water can be used as a heavy water at low operating cost. .

In order to multiply algae in winter, it is good to make a heat insulating film made of glass, vinyl, etc., through which sunlight penetrates the upper part of the pond.

As described above, the present invention is not limited to the preferred embodiments of the above-described characteristics, and various changes can be made by those skilled in the art without departing from the gist of the present invention as claimed in the claims. will be.

As described above, the present invention, first, can be economically and effectively purify the non-point pollutants generated in the development area, and second, by installing rainwater reservoirs in the development area to clean the non-point pollutants generated in the watershed at the same time to prevent flooding Third, the non-point pollution detention reservoir installed in the development area can be used as a hydrophilic facility. Fourth, the polluted initial rainfall effluent can be collected on a first-come, first-served basis and then reused as rainwater. By supplying a small amount of circulating water, it is possible to improve the hydrophilic function of the pond by keeping the upper water quality of polluted ponds and reservoirs clean. Sixth, as a technology that can be utilized as an economic method of using heavy water for sewage treatment and no discharge of sewage. The invention is a very useful invention that is effective and economical compared to the existing method.

Claims (7)

Separation of initial rainfall runoff and forming stormwater sediment (11) The rainwater toil chamber 11 has an inlet pipe 12, a rainwater discharge pipe 13, and a reservoir inlet pipe 14 and a settling space 15 connected to the reservoir so that rainwater flows into the reservoir while having a collection function. Rainwater collection facility (10) consisting of a screen (16) to block the inflow of contaminants The rainwater collection facility in the rainwater collection facility 11, the storage facility 20 through which the rainwater flows into the reservoir through the reservoir inlet pipe 14, and installed on the bottom of the reservoir to produce a water change pipe, and the overflow wear room on one side. A pond 30 having a 31 formed therein, a gravity filtration system 40 installed on the reservoir 22 to purify the water of the reservoir and the pond, and the filtered water purified by the filtration facility 40 is stored therein. In order to move the filtered water collecting facility 50 and the filtered water collected in the filtered water collecting facility 50 to the place where the pore contact medium is installed , a pumping facility 60 to which the circulating water supply pipe 61 is connected , and to the pumping facility. Pipe-connected circulating water supply pipe (61) for storing filtered water and further purification of soluble contaminants, with a pore contact medium storage facility (70) provided with a pore contact medium , and the water filtered by the pore contact medium storage facility (70) . Through the outlet pipe (74) W distribution sump 81 is connected to and stored in the water circulation inlet pipe 82, the through water collecting distribution facility that is dispensed into the pond 80 and the banks 22 of the storage facility 20 and the inclined surface, pond bottom in Consists of a landscaping facility (90) formed by installing shades, benches, decks, sports facilities, and planting aquatic plants (26), trees (27), etc. Non-point pollutant purification and hydrophilic facility construction device using storm ponds, characterized by functionally connecting mutual relations and maximizing efficiency The rainwater inlet pipe 14 installed in the rainwater sewer chamber 11 of the rainwater collecting facility 10 is purged of non-point pollutants using rainwater storage ponds, characterized in that it is installed lower than the rainwater discharge pipe 13. And hydrophilic facilities The storage facility of claim 1, wherein the storage facility 20 forms a reservoir formed with a gentle slope and the rainwater generated in the basin can flow into the natural reservoir into the reservoir and discharge the rainwater introduced into the reservoir into the downstream body of water. Non-point pollutant purification and hydrophilic facilities using rainwater ponds, characterized by being installed downstream of the watershed The closed area of claim 1, wherein the pond 30 is formed by using the whole or part of the bottom of the reservoir, but is formed in an elongated shape such as an elliptical shape so that the floats can be moved by circulating water, and the curved portion is processed in a streamlined manner. Non-point pollutant purification and hydrophilic facility construction equipment using storm ponds The method of claim 1, wherein the gravity filtering facility 40 is formed of a bottom-closed structure to filter the water flowing into the reservoir during the rainfall and the overflowed pond water in the overflow wear installed in the outlet of the pond during normal rainfall and the structure Non-polluting material using rainwater retention pond, characterized in that the filter layer supporting facility is installed inside and the filter layer 41 is spread over the entire floor surface to form the filter layer, but the surface height of the filter layer is set lower than the height of the overflow wear. Purification and Hydrophilic Facilities According to claim 1, wherein the pore contact medium storage facility 70 excavates the reservoir banks near the pond circulating water inlet, the bottom and the side portion is filled, the contact medium is filled with a large gap, covering the non-woven fabric and the top Non-point pollutant purification and hydrophilic facilities using a rainwater reservoir, characterized in that the storage water outlet pipe 74 and the overflow water pipe 72 is installed The initial rainfall containing the contaminants gathers in the storm drain chamber 11 where the screen 16, the rainwater collecting facility 10, is installed, and enters the reservoir 20 and the pond 30 through the reservoir inlet pipe 14. The water flowing into the reservoir and the pond 30 is moved to the filtration facility 40 where the filter media 41, such as gravel and crushed stone, is sent to the collecting facility 50, and some of the water is discharged to the discharge water. And part of the circulating water through the circulating water supply pipe 61 through the circulating water supply pipe 61 is sent to the buried contact medium storage facility 70, and the circulating water introduced into the void contact medium storage facility is purified while passing through the pore medium is distributed and collected The facility 80 is moved to the distribution collection basin 81 and is supplied from the collection basin 81 to the pond 30 formed at the bottom of the reservoir so that the water in the pond is always kept purified, while the pond 30 Water overflowed to the free fall into the overflow wear room (31) This operation is to be re-introduced to the filtration purification (40) of the repeatedly formed through the air outlet pipe 32. On the other hand, The pond water quality is kept clean by the supply of purified circulating water so that the float does not remain in the middle of the pond and gathers to the outlet by the flow of water so that there is no elongated, recessed area like the oval shape. How to clean non-point pollutants and build a hydrophilic facility using rainwater ponds, characterized by planting trees, ground cover plants, etc. on the levees and slopes, and installing a shade film, a bench, lighting facilities, etc.

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