KR101300070B1 - Non-point sources pollutants removal facility - Google Patents

Abstract

PURPOSE: A reduction facility of nonpoint pollution configured to use porous lightweight filter media and a peg inclination plate is provided to increase the water sump stability, the removal efficiency of the solid material and the removal efficiency of the oil component by the oil decomposing microorganism. CONSTITUTION: A reduction facility of nonpoint pollution (100) comprises a mixing part with a partition wall (121) dividing a settling tub (110) and a filter tub (130) and a operating part connected to the mixing part. The bottom surface of the settling tub and the filter tub has a sloped-shape. The settling tub has an intake pipe for inflow water, a water level sensor, a supernatant pipe for supernatant and a first sludge pipe for ejecting the precipitated sludge. The filter tub has multiple filtering units for filtering inflow water exceeded over the partition wall from the settling tub, a second sludge pipe for ejecting the precipitated sludge and an induction pipe of treated water for discharging the inflow water exceeding the capacity of the mixing part.

Description

Non-point sources pollutants removal facility

The present invention relates to a non-point pollution reduction facility, and more particularly, it is possible to backwash media in a facility using clean residual rainfall in the facility without supplying water from the outside, and to periodically withdraw sludge automatically. The present invention relates to a non-point pollution reduction facility that can reduce maintenance costs and promote convenience.

Nonpoint source is a city, road, farmland, mountainous area, construction site, etc.A source that emits unspecified water pollutants from an unspecified place (Article 2 No. 2 of the Act on Water and Water Ecosystem Conservation). )

Non-point sources are difficult to collect because the flow and discharge paths of pollutants are not clearly distinguished, and the design and maintenance of treatment facilities is difficult because the amount / emissions are highly dependent on weather conditions such as precipitation.

Non-point pollution includes fertilizers and pesticides that are not absorbed by the crops and remains in agricultural land, manure from livestock grazing on pasture, untreated livestock waste discharged from livestock farms, air pollutants mixed with rainwater, sediments on road surfaces, and rainfall in confluent sewer pipes. There is a mix of sewage / sewage and rainwater that flows into the river beyond the city's design.

As land development is accelerated due to the progress of urbanization and industrialization, and the unspecified area of land, roads and parking lots increases, the water quality impacts of rivers and lakes caused by nonpoint sources are also increasing.

As a non-point pollution reduction facility, filtration type facility is a treatment facility that removes pollutants in rainfall using sedimentation, filtration and adsorption method after primary treatment of rainfall runoff in a collecting tank (or sedimentation tank). Reservoir tanks of existing filtration facilities use rectifier or vortex swivel cylinders to improve the stability of water flow and settling efficiency of solids, but in reality, their efficiency is not large and the processing efficiency in the filtration tank is high but the treatment capacity is small. There is a problem of median occlusion, and the need for improvement is emerging.

The main filter media used are zeolite, activated carbon, sand, and crushed stone, and most of them are heavy, so the backwashing efficiency is lowered during backwashing, which requires a long backwashing time, and the washing and changing cycle of the filter media is faster, resulting in a negative input due to continuous maintenance costs. Economic factors arise.

If periodic maintenance is not carried out, it is likely that subsequent rainfall will cause a large part of the pollutant to be swept away or the functioning of the treatment plant due to large amounts of suspended solids, such as large amounts of soil entering the treatment plant. As a result, maintenance determines efficiency, and maintenance is important and convenience of maintenance is on the rise.

The main considerations of the current maintenance plan for the filtration-type facility are the change of filter media and the number of dredging of sediments. In most sites, it is difficult to supply constant water for backwashing of media and supplying backwash water using water trucks is also difficult. It is also practically impossible for local government officials, who can be called maintenance agents, to maintain their facilities regularly due to lack of manpower. In addition, in accordance with the guidelines for maintenance of non-point pollution abatement facilities, an effective method for discharging the residual water in the filtration tank to the outside within 40 hours should be devised.

Korea Patent Registration No. 10-0952117

An object of the present invention for solving the above problems is to stabilize the water flow in the sedimentation tank to suppress the re-injury of the sediment and to remove the oil components mixed in the rainfall, and to make the filter medium used in the filtration tank light weight It is intended to facilitate cleaning and replacement. In addition, the filter backwash water is not used as a constant or water car, but externally using the supernatant water (clean water) remaining within the facility within 40 hours after the end of the rainfall, and the precipitation remaining in the filtration tank when the sludge deposited in the pretreatment facility is removed. It is to reduce the frequency of dredging car use and to initialize the filtration tank at all times, thereby improving both treatment efficiency and maintenance convenience of non-point pollution reduction facilities.

Non-point pollution reduction facility of the present invention for achieving the above object, the composite tank having a space therein, divided into a settling tank and a filtration tank by a partition wall; And an operation part connected to the complex tank, wherein the bottom surface of the settling tank and the bottom surface of the filtration tank are formed to be inclined, and the settling tank includes an inlet pipe to which an inflow water is supplied, a water level sensor for measuring the water level, and a discharge of supernatant water. And a first sludge pipe for discharging the settling sludge, wherein the filtration tank includes a plurality of filtration units for filtering the inflow water flowing over the dividing wall from the settling tank, and a second sludge for discharging the sludge. A sludge tank for storing the sludge drawn out by the sludge extraction pump from the first sludge pipe and the second sludge pipe, and the treatment water discharge induction pipe for discharging the inflow water exceeding the capacity of the complex tank. And a water supply tank for storing the supernatant water drawn out by the water supply pump from the upper water supply pipe, and the sludge withdrawal. Program and the boiling point of contaminated sludge reduction facility including a controller to control the supply and drainage pumps.

Overflow wear is disposed above the partition wall.

Also, the overflow filter is filled in the overflow wear.

The wall on the side of the filtration tank of the overflow wear is characterized by consisting of a overflow wear network.

In addition, the overflow filter is made of any one or more of a porous lightweight filter, a fibrous filter, and a zeolite, characterized in that the oil decomposition microorganism is planted.

The filtration tank may include a backwash water supply pipe for supplying backwash water to the filtration unit, and a backwash water injection pipe connected to the backwash water supply pipe to inject backwash water into the filtration unit.

In addition, the backwash water is characterized in that the supernatant water stored in the water supply tank is supplied by the water supply pump.

Further, in the settling tank, the partition wall is provided with an inclined plate, characterized in that to suppress the rise of sludge.

In addition, the first sludge pipe, the second sludge pipe, and the upper water pipe is characterized in that the discharge network is installed.

In addition, the filtration unit, characterized in that it comprises a housing through which fluid can pass through the upper and lower surfaces, and the filter medium filled in the housing.

In addition, the filter medium is made of any one or more of a porous light weight filter, a fibrous filter medium, and zeolite, characterized in that the spore-forming microorganism is planted.

The filtration unit may be detachably installed in the filtration tank.

In addition, the operation unit is provided with a blower, the backwash water supply pipe is characterized in that the air is supplied by the blower.

In addition, obsidian ballon perlite or permstone is used as a porous lightweight filter material, and a rope-shaped string contact material manufactured by radially weaving several strands of nylon yarn is used as a fibrous filter material. It is characterized by using.

In addition, an end of the inlet pipe is directed upwards, characterized in that the end is provided with a strainer.

In addition, the strainer is characterized in that it is disposed lower than the upper end of the partition wall.

The non-point pollution reduction facility according to the present invention has the effect of increasing the stability of water flow and the removal efficiency of solids through porous lightweight filter media and perforated ramps , and oil components caused by oil decomposition bacteria ( Acinetobacter sp. , Yeast , Pseudomonar sp. , Pseudoxanthomonas spadix ). The effect of increasing the removal efficiency of can be obtained.

In addition, the porous light weight filter mediated with spore-forming microorganisms and the fibrous filter media filled with fibrous media increase the removal efficiency and backwashing efficiency of the contaminants and facilitate the replacement of the media, thereby increasing the convenience of maintenance. In addition, the amount of water required for backwashing is controlled by the water level sensor so that water can be washed without additional water installation work or additional arrangement of the water supply vehicle. To achieve.

In addition, the sludge deposited in the sedimentation tank and the sludge underneath is periodically removed to provide a concentration tank for storing and concentrating for a certain period and a certain amount of capacity, thus eliminating frequent dredging of dredging vehicles and reducing the number of maintenance, thus maintaining non-point pollution reduction facilities. Management convenience will be attained.

1 is a cross-sectional view of a composite tank in a non-point pollution reduction facility according to an embodiment of the present invention.
Figure 2 is a perspective view of the overflow wear filled with media installed at the end of the inlet pipe.
3 is a perspective view of the inclined plate.
4 is a schematic plan view of the treated water suction pipe and the backwash water injection pipe;
5 is a schematic view from the side of the operating part.
6 is a plan layout view of the operation unit.
Figure 7 is a micrograph showing the bubble form of obsidian vacuum sphere pearlite.
FIG. 8 is a scanning electron microscope (SEM) image of permistone. FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the specification.

The non-point pollution reduction facility 100 according to the embodiment of the present invention includes a complex tank 101 and an operation unit 140.

As shown in FIG. 1, the complex bath 101 includes an immersion tank 110 and a filtration tank 130 in one structure. In the sedimentation tank 110, coarse coarse matter, suspended matter and solids are filtered out and precipitated, and may be used as a pretreatment facility in the filtration tank 130.

The immersion tank 110 and the filtration tank 130 are divided by a partition wall 121 that separates the inner space of the complex tank 101. An upper end of the dividing wall 121 is disposed lower than an inflow position of the inflow water flowing into the sedimentation tank 110.

The overflowware 111 is disposed at an upper end of the dividing wall 121. The overflow wear 111 is a function of filtering the water flowing in the sedimentation tank 110 and serves to induce the stability of water flow and sedimentation of solids. 2, the overflowware 111 is formed in a box shape having an opening at an upper portion thereof, and an inflow fence 112 is formed at both sides of the opening to prevent the outflow of huge contaminants contained in the inflow water. The overflow filter 103 is filled in the overflow wear 111. The side wall of the filtration tank 130 of the overflow wear 111 is formed of the overflow wear network 158. Thus, the water passing from the sedimentation tank 110 and the overflowware 111 is moved to the filtration tank 130 through the water overflow filter 103 through the water head difference.

The overflow filter 103 is composed of at least one of a porous lightweight filter, a fibrous filter, and a zeolite, and the filter medium includes oil decomposing microorganisms ( Acinetobacter sp. , Yeast , Pseudomonar sp. , Pseudoxanthomonas spadix) to decompose the adsorbed oil. Plant). Here, as the porous light weight material, obsidian vacuum spherical pearlite and permestone may be used.

The obsidian ballon perlite (obsidian ballon perlite) is a collection of independent pores, because the breakage of pores is small, it is characterized by extremely low absorption compared to pearlite pearlite. It is light in weight (0.08 to 0.60 in specific gravity) and high in strength (heating at 871 ℃ or higher after crystallization of rock, and rapidly evaporating crystal water to form numerous micropores in particles, resulting in very light and unique properties). . It is neutral (pH 6.5 ~ 7.5) and can act as a buffer for drainage by acid rain. It has a small volume reduction rate and can serve as a drainage product for a long time.

Table 1 is a table showing the characteristics of obsidian vacuum sphere pearlite, Figure 7 is a photograph showing the bubble form of obsidian vacuum sphere pearlite.

The size of the obsidian vacuum spherical pearlite used in the present invention is 40-50 mm.

division Obsidian vacuum bulb pearlite ore Black Hard Gemstone Number of Crystals 2% Bubble type Independent bubble Firing rate 5 to 20 times Foaming temperature 1,000 Particle size 0 to 70 Granularity reshuffle importance 0.08 to 0.3 Average absorption 40% Conservative small Drainage Big Breathability Big

Pumice stone is a volcanic rock that has cooled so rapidly that it cannot be crystallized by liquid ejection, and small bubbles of glass bubbles are generated throughout the rock as the gas contained at the time of cooling suddenly escapes. Because of this porous structure, it is very light, has structural strength and is very chemically stable. 8 is a SEM photograph of the porosity of permistone. Physical properties and chemical composition of permistone are shown in Table 2.

Physical Characteristics Chemical composition (%) Size (mm) 10-20 Silica (SiO ₂ ) 61.30 Surface area (㎡ / cm3) 148 Iron Oxide (Fe ₂ O ₃ ) 2.12 Specific gravity (g / ㎥) 0.4 to 0.7 Aluminum Oxide (Al ₂ O ₃ ) 19.14 Moisture content 46.52 Calcium Oxide (CaO) 5.44 Magnesium Oxide (MgO) 0.36 Sulphate (SO ₃ ) nil Potassium Oxide (K ₂ O) 3.51 Sodium Oxide (Na ₂ O) 5.80 Loss on Ignition including CO ₂ 2.30

The particle size of the permestone used in the present invention is 10 ~ 20㎜, specific surface area is 148 ~ 170㎡ / ㎠, specific gravity 0.4 ~ 0.7g / ㎥, moisture content is characterized in that 40 ~ 50 (v / v,%) do.

In addition, the fibrous media should have a high tensile strength, low elongation, and chemical stability to form a string with excellent initial adhesion of microorganisms, and it is a rope type manufactured by weaving several strands of nylon yarn in a radial manner. It is possible to use a specific surface area of 1 m 2 / m and a diameter of 40 to 45 mm composed of nylon Y cross-section BCF multi-threaded yarn and 600 denier quadruple nylon mono yarn. Since fibrous media can attach various kinds of microorganisms stably and quickly, the removal efficiency is increased by securing microorganisms related to nitrogen and phosphorus removal which are relatively slow in growth. In addition to the oxidation of organic matter by microorganisms, the inorganic SS component impinges on the media and has a secondary purification mechanism that precipitates downward. In particular, when the fibrous media is densely installed at regular intervals, the solids in the water body passing therebetween are effectively gravity settled by the prevention of short-circuit flow by the media and the rectifying effect, and directly collide with the inertia force.

The solids are collided or flocculated by the complex flow rate distribution of the contact portion, resulting in efficient solid-liquid separation, which removes about 10% or more of the soluble BOD by the action of microorganisms attached to the fibrous media.

In addition, the zeolite is high, and with respect to the Na ^+, Ca ^2+, Mg ^2+, except that the K ⁺ selectivity of the co-existence typically for NH ₄ ⁺ and NH ₄ ⁺ ions thereof to co-exist with the even NH ₄ ⁺ There is an advantage that can be removed. The size of the zeolite used as a medium is 5 ~ 7㎜, depending on the case is used to fill the net having a certain net such as mosquito net.

An inlet tube 102 is disposed in the upper portion of the immersion tank 110, an end of the inlet tube 102 is bent upward, and a strainer 157 is disposed at the end of the inlet tube 102. do. Therefore, it is possible to distribute and supply influent water in a wide area. In order to prevent the inflow of water into the immersion tank 110 is supplied directly to the filtration tank 130 by a strong pressure (for example, when the rainfall is large, etc.), the strainer 157 is the immersion tank 110 It is desirable to be located in the part where water is filled in the cavities. Therefore, the strainer 157 is preferably disposed below the dividing wall. In addition, the strainer 157 is higher than the low water level sensor 116, it is more preferably disposed in the upper water region.

The bottom surface of the immersion tank 110 and the bottom surface of the filtration tank 130 are formed to be inclined to lower toward the dividing wall 121. Therefore, sludge may gather around the dividing wall 121.

Therefore, in the sedimentation tank 110, the first sludge pipe 117 is installed for the withdrawal of the sludge collected in the partition wall 121 and the sludge flowing over the sedimentation tank 130 generated when the filter tank is backwashed. . Similarly, the filtration tank 130 is provided with a second sludge pipe 106 for withdrawing sludge generated during filtration tank backwashing. And, the end of the first sludge pipe 117 and the second sludge pipe 106 is attached to the discharge network 104, 105 for maintaining a constant mesh to prevent clogging during the suction of the sludge.

And, the end of the immersion tank 110 is installed higher than the first sludge pipe 117 to pump the supernatant remaining in the immersion tank 110 and the filtration tank 130 at the end of the rainfall to store in the water supply tank 143. The upper water pipe 119 is installed. An end of the upper water pipe 119 is attached to the discharge network 118 for maintaining a constant mesh to prevent clogging due to sludge or the like when the upper water is inhaled.

The discharge network (104, 105, 118) can be made of the same configuration, as the discharge network (104, 105, 118), a porous tube having a plurality of holes formed on the surface, or a fibrous screen installed around the frame can be used.

In addition, the water level sensor unit 113 for controlling the drainage, water supply and sludge withdrawal is mounted in the sedimentation tank 110. The water level sensor unit 113 may include a high water level sensor 114, a medium water level sensor 115, a low water level sensor 116,

The standard of high water level is when the water is filled to the bottom of the treated water outlet 135 at the end of the rainfall. The reference of the middle water level is based on the height of the dividing wall 121. The low water level reference is based on the middle of the filter unit 155.

In addition, there is an inclined plate 120 at the side of the partition wall 121 in the sedimentation tank 110 to distribute the hydraulic power of the fluid and prevent resuspension of the sedimentation sludge. As shown in FIG. 3, the inclined plate 120 may use a porous plate.

The filtration unit 130 is provided with a filtration unit 155. The filtration unit 155 fills the filtration media 132 in the housing 131 through which the fluid can pass. Therefore, when the filtration function of the filtration unit 155 is lost, it is possible to restore the filtration function by replacing only the internal filter medium 132. The housing 131 is provided with a porous plate on the upper and lower surfaces. The porous plate is a metal mesh or fiber mesh to allow the water to move. If fiber mesh is used, the frame is made of metal frame and surrounded by fiber mesh. The filtration media 132 may be made of at least one selected from fibrous media, porous media, and zeolite. In addition, the filter medium 132 is a spore-forming microorganism (for example, Bacillus thuringiensis, Bacillus subtillus, Nitrobacter having a nitrification capacity and nitro having a denitrification function) Nitrosomonas) can be planted. Therefore, spore-forming microorganisms inhabiting the pores of the permestone and obsidian vacuum globular pearlite may be maintained in the spore form when nutrients and moisture are not supplied due to insufficient inflow due to drought.

Then, a backwash water supply pipe 108 for supplying backwash water for filtering is installed in the filtration tank 130. The backwash water supply pipe 108 is connected to the backwash water injection pipe 133 as shown in FIG. 4 to spray backwash water toward the filtration unit 155 to remove sludge and the like contained in the filtration unit 155. Do it. At this time, it is preferable that the backwash water injection pipe 133 is provided with a plurality of branches to supply backwash water evenly to the bottom surface of the filtration unit 155. It is preferable to make the injection direction of the backwash water by the said backwash water injection pipe 133 into an upper direction, and to make it into the direction opposite to the direction in which a sludge settles. It is also possible to inject air instead of the backwashing water.

In addition, the treated water discharge induction pipe 134 is installed to continuously discharge the treated water when the rainfall continues, and the treated water discharged through the treated water discharge induction pipe 134 is the treated water discharge oil tool 135 Drained to outside. At this time, at the end of the treated water discharge induction pipe 134, the treated water suction pipe 107 is disposed in the lower portion of the filtration tank 130, as shown in FIG. It is preferable that the suction port is formed around the treated water suction pipe 107 and the suction port is formed upward so that sludge does not directly discharge. The treatment water suction pipe 107 is preferably installed in a plurality of branches to increase the suction efficiency.

The height of the treated water discharge oil tool 135 is the same as the high water level sensor 114, the height is lower than the inlet pipe (102).

As shown in FIGS. 5 and 6, the operation unit 140 includes a blower 141, a water supply and drainage tank 143, a sludge tank 145, a pump 142, 144, and a controller 146. It is made to include.

The water supply tank 143 is introduced from the upper water pipe 119, and supplies the upper water stored in the backwash water supply pipe 108 for backwashing. At this time, the inflow and outflow of water is made by the water supply and drainage pump 142. Water overflowed from the water supply tank 143 is discharged to the outside through the water supply tank overflow pipe 147. When the backwash water is supplied to the backwash water supply pipe 108, air may be supplied to the backwash water supply pipe 108 using the blower 141.

The water supply and drainage pump 142 is preferably installed so that two or more, to prepare for failure.

The sludge tank 145 is connected to the first sludge pipe 117 and the second sludge pipe 106 and is supplied with sludge by the sludge withdrawal pump 144. The sludge withdrawal pump 144 is also preferably installed at least two so as to prepare for failure. The sludge tank 145 is provided with a sludge thickening tank overflow pipe 148 is discharged to the sewage pipe (not shown) when the amount of sludge withdrawn from the immersion tank 110 and the filtration tank 130 is excessive.

The sludge in the sludge tank 145 stored for a certain period of time is dredged and disposed of through the dredging pipe 149 using a dredging vehicle.

Non-point pollution reduction facility 100 according to the present invention is basically configured as described above. Hereinafter, the operation principle of the non-point pollution reduction facility 100 will be described.

In rain, the inflow water flows through the inflow pipe 102 and is supplied into the settling tank 110.

When the inflow water rises in the sedimentation tank 110 and exceeds the height of the dividing wall 121, the inflow water is supplied to the filtration tank 130 beyond the overflowware 111 and filtration occurs at this time. Therefore, the inflow water fills the sedimentation tank 110 and the filtration tank 130 at the same time, and discharges the treated water through the treated water discharge induction pipe 134 when the level of the complex tank 101 rises due to continuous rainfall.

When there is no additional rainfall up to 40 hours after the end of the rainfall, the water supply and drainage pump 142 is operated to drain the water up to the low water level 116 is transferred to the water supply tank 143 of the operating unit 140 . When the water level sensor reaches the low water level, the water supply and drainage pump 142 is stopped, and the transfer to the water supply and drainage tank 143 is stopped. At this time, the residual water of the sedimentation tank 110 becomes a residual amount up to the low water level, and in the filtration tank, the residual water reaches the height based on the partition wall 121.

In the case of backwashing after a predetermined time has elapsed, the water supply and drainage pump 142 is timed, and the blower 141 is operated. As a certain amount of water remains in the filtration tank 130, air bubbles are formed during air backwash, and the solids, suspended matter, and long-term biofilms that are attached to the media by the pressure generated when air bubbles burst due to the pressure difference in the water are removed. Will be done. If a predetermined time (approximately 3 to 5 minutes) elapses after the blower 141 starts to operate, the water supply and drainage pump 142 is operated. The washing water is supplied to the lower portion of the filtration tank 130 by the water supply and drainage pump 142 so that sludge generated by the air backwash flows to the immersion tank 110 together. The water level of the immersion tank 110 gradually rises from the low level to the medium level. The operation of the water supply and drainage pump is performed until the water level sensor recognizes the low water level 116 to the middle water level 115, and the operation of the water supply and drainage pump 142 is stopped when the water level is reached.

At the same time as the operation of the water supply and drainage pump 142 is stopped, the sludge discharge pump 144 connected to the sludge tank 145 is operated, and the operation of the sludge discharge pump 144 is performed when the water level sensor reaches the low water level 116. Is done until. In this process, the sludge of the sedimentation tank 110 and the residual water of the filtration tank 130 are discharged through the sludge pipes 106 and 117. When the low water level is reached, the operation of the sludge withdrawal pump 144 is stopped. Low water levels may vary in location depending on plant capacity and sludge generated. Operation of the pumps 142 and 144 is by the controller 146. Therefore, the cleaning operation is performed by a timer and a water level sensor built in the controller 146.

The sludge in the sludge tank 145 stored for a certain period of time is finally dredged and disposed using a dredging vehicle.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. It can be understood that

100: non-point pollution reduction facility 101: complex tank
102: inlet pipe 103: overflow filter
104,105,118,152: discharge network 106: second sludge pipe
107: treatment water suction pipe 108: backwash water supply pipe
110: tide tank 111: moonware
112: inlet fence 113: water level sensor
114: high water level sensor 115: medium water level sensor
116: low water level sensor 117: the first sludge pipe
119: upper water pipe 120: inclined plate
121: partition wall 130: filtration tank
131: housing 132: filter medium
133: backwash water injection pipe 134: treated water discharge induction pipe
135: treated water outlet 140: operating part
141: blower 142: water supply and drainage pump
143: water supply and drainage tank 144: sludge withdrawal pump
145: sludge tank 146: control unit
147: overflow tank overflow pipe 148: sludge concentration tank overflow pipe
149: dredge pipe 155: filtration unit
157: strainer 158: overflowware network

Claims (16)

A composite tank having a space therein and divided into a settling tank and a filtration tank by a partition wall; And
It includes an operation unit connected to the composite bath,
The bottom surface of the settling tank and the bottom surface of the filtration tank are formed to be inclined,
The settling tank includes an inlet pipe to which the inflow water is supplied, a water level sensor for measuring the water level, an upper water pipe for discharging the supernatant water, and a first sludge pipe for discharging the sludge,
The filtration tank includes a plurality of filtration units for filtering the inflow water flowing over the dividing wall from the settling tank, a second sludge pipe for discharging the sludge, and a treatment water discharge induction for discharging the inflow water exceeding the capacity of the complex tank. Includes a tube,
The operation unit includes a sludge tank for storing sludge withdrawn from the first sludge pipe and the second sludge pipe by the sludge withdrawal pump, a water supply tank for storing the supernatant water drawn out by the feed water pump from the upper pipe, and the sludge withdrawal. A control unit for controlling a pump and the water supply and drainage pump,
The filter unit is a non-point pollution reduction facility, characterized in that detachably installed in the filtration tank.
The non-point pollution reduction facility according to claim 1, wherein the overflow wear is arranged above the partition wall.
The non-point pollution reduction facility according to claim 2, wherein the overflow filter is filled in the overflow wear.
The non-point pollution reduction facility according to claim 2, wherein the wall on the side of the filtration tank of the overflow wear consists of a overflow wear network.
The non-point pollution reducing facility according to claim 3, wherein the overflow filter is made of at least one of a porous lightweight filter, a fibrous filter, and a zeolite, and oil decomposition microorganisms are planted.
The boiling point of claim 1, wherein the filtration tank comprises a backwash water supply pipe for supplying backwash water to the filtration unit, and a backwash water injection pipe connected to the backwash water supply pipe to inject backwash water into the filtration unit. Pollution Reduction Facilities.
The non-point pollution reduction facility according to claim 6, wherein the backwash water is supplied by the feed water drain pump to the supernatant water stored in the feed water drain tank.
The non-point pollution reduction facility according to claim 1, wherein an inclined plate is provided in the dividing wall in the settling tank to suppress an increase of sludge.
The non-point pollution reduction facility according to claim 1, wherein the first sludge pipe, the second sludge pipe, and the upper water pipe are provided with a discharge network.
The non-point pollution reduction facility according to claim 1, wherein the filtration unit comprises a housing through which fluid can pass through the upper and lower surfaces, and a filtration medium filled in the housing.
The non-point pollution reducing facility according to claim 10, wherein the filter medium is made of at least one of a porous lightweight filter, a fibrous filter, and a zeolite, and spore-forming microorganisms are planted.
delete The non-point pollution reduction facility according to claim 7, wherein the operation unit is provided with a blower, and the backwash water supply pipe is supplied with air by the blower.
12. The method of claim 5 or 11, wherein obsidian ballon perlite or pumice stone is used as the porous light weight filter, and a plurality of strands of nylon yarn are radially woven as a fibrous filter material. Non-point pollution reduction facility characterized by using a rope-type sticky contact material.
The non-point pollution reduction facility according to claim 1, wherein an end portion of the inflow pipe faces upward, and a strainer is installed at the end portion.
16. The non-point pollution reduction facility according to claim 15, wherein the strainer is disposed lower than an upper end of the dividing wall.

Images