KR101646534B1 - polyurethane filter and priming rain filtering device therefor - Google Patents
polyurethane filter and priming rain filtering device therefor Download PDFInfo
- Publication number
- KR101646534B1 KR101646534B1 KR1020160040905A KR20160040905A KR101646534B1 KR 101646534 B1 KR101646534 B1 KR 101646534B1 KR 1020160040905 A KR1020160040905 A KR 1020160040905A KR 20160040905 A KR20160040905 A KR 20160040905A KR 101646534 B1 KR101646534 B1 KR 101646534B1
- Authority
- KR
- South Korea
- Prior art keywords
- filter
- polyurethane
- polyurethane filter
- water
- wastewater
- Prior art date
Links
- 229920002635 polyurethane Polymers 0.000 title claims abstract description 102
- 239000004814 polyurethane Substances 0.000 title claims abstract description 102
- 238000001914 filtration Methods 0.000 title claims abstract description 62
- 230000037452 priming Effects 0.000 title 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 57
- 239000007787 solid Substances 0.000 claims abstract description 5
- 239000002351 wastewater Substances 0.000 claims description 20
- 238000005406 washing Methods 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 9
- 238000005273 aeration Methods 0.000 claims description 7
- 230000000630 rising effect Effects 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 239000003054 catalyst Substances 0.000 claims description 4
- 239000004088 foaming agent Substances 0.000 claims description 4
- 239000000654 additive Substances 0.000 claims description 3
- 230000000996 additive effect Effects 0.000 claims description 3
- 238000005187 foaming Methods 0.000 claims description 3
- 229920005862 polyol Polymers 0.000 claims description 3
- 150000003077 polyols Chemical class 0.000 claims description 3
- 239000012948 isocyanate Substances 0.000 claims description 2
- 150000002513 isocyanates Chemical class 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims description 2
- 238000005339 levitation Methods 0.000 claims 2
- 238000004140 cleaning Methods 0.000 abstract description 6
- 238000000926 separation method Methods 0.000 description 4
- 238000004065 wastewater treatment Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229920005830 Polyurethane Foam Polymers 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 239000011496 polyurethane foam Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 1
- 239000003830 anthracite Substances 0.000 description 1
- 230000003190 augmentative effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 description 1
- 238000004075 wastewater filtration Methods 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
- B01D39/1607—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
- B01D39/1623—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
- B01D24/02—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration
- B01D24/10—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration the filtering material being held in a closed container
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
- B01D24/46—Regenerating the filtering material in the filter
- B01D24/4605—Regenerating the filtering material in the filter by scrapers, brushes, nozzles or the like placed on the cake-side of the stationary filtering material and only contacting the external layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
- B01D24/48—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof integrally combined with devices for controlling the filtration
- B01D24/4807—Handling the filter cake for purposes other than regenerating
- B01D24/4815—Handling the filter cake for purposes other than regenerating for washing
-
- B01D29/0027—
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/64—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element
- B01D29/6438—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element nozzles
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/285—Treatment of water, waste water, or sewage by sorption using synthetic organic sorbents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/14—Devices for separating liquid or solid substances from sewage, e.g. sand or sludge traps, rakes or grates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2221/00—Applications of separation devices
- B01D2221/12—Separation devices for treating rain or storm water
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/001—Runoff or storm water
Abstract
Description
The present invention relates to a polyurethane filter and an early stage superior filtration apparatus using the same. More particularly, the present invention relates to a polyurethane filter capable of easily collecting suspended matters, and an initial excellent filtration apparatus using the same.
More specifically, the present invention relates to a polyurethane foam which is made of polyurethane and has a plurality of openings and a closed-cell mixture and has a plurality of voids, and is rotated by receiving resistance from aeration air The present invention relates to a polyurethane filter which can be easily cleaned as it is rotated by sprayed washing water, and an initial excellent filtration apparatus using the same.
In general, sewage, wastewater and stormwater (hereinafter collectively referred to as "wastewater") contain suspended matter and separate suspended matter and non-pointed contaminants from water containing suspended solids and non-pointed contaminants And a non-point pollution abatement facility.
Methods for removing pollutants using such an oil separation facility and a non-point pollution abatement facility are generally classified into a method of removing the pollutants by a specific gravity difference between oil, water, and suspended matter, and a method of removing coalescing plates using lipophilic or hydrophilic materials And the Stokes law, which is a formula for calculating the frictional force applied by the fluid to the object. Recently, a filtration method based on the concept of a sand filter has been used as a method of filtering zeolite, ilite anthracite, Activated carbon, pitmoss, etc. as a filter medium.
There are various techniques for filtering such wastewater, and
Patent Document 2 discloses a water treatment tank in which oily wastewater flows into the water treatment tank to filter oily wastewater flowing therein, a turntable assembly rotatably installed inside the water treatment tank, a turntable assembly installed and fixed on the turntable assembly, A filter rotation supporting means provided inside the upper portion of the water treatment tank for rotatably supporting the upper end of each of the filter filters to prevent the flow from being generated, a turntable disposed at the lower portion of the water treatment tank, A turntable drive means for rotating the assembly to enable rotation of the filtration filter; and a turntable drive means for rotating the assembly to make rotation of the filtration filter, a separation means for separating foreign matter attached to the outer circumferential surface of the filtration filter by spraying water pressure, By the filter cleaning means and the filter cleaning means, The separated or attractive force is weakened foreign matter from the filter is made of a configuration including the foreign matter suction means for removing the suction through vacuum suction.
Such a wastewater filtration or treatment apparatus uses a filter as described above, and such a filter typically has a plurality of cavities such as a cotton. However, such a conventional filter is relatively easily separated when the size of the floating material is more than 1 mm, but the floating material having a finely divided diameter of 1 to 1.5 탆 through the flow of the fluid takes a long time to separate the flocculation and condensation, Had a falling problem.
In order to solve the above-described conventional problems, there has been developed a filter which is simple in maintenance, economical and efficient, and capable of performing a water separation process and a solids removal process, and examples thereof are Patent Documents 3 and 4.
Patent Literature 3 is made of an ultra-high-molecular-weight polyethylene material and is formed into a hollow cylindrical body having a diameter of 14 to 30 mm, a length of 50 to 85 cm, and a thickness of 0.01 to 0.08 mm, The outer shape of the cylindrical body is elastically deformed and restored by an external force acting on the cylindrical body,
Patent Document 4 discloses a filter member in which a filter plate made of a polyethylene material is formed in a spiral shape and is provided with a filter member in which an excellent passage space is formed in which the front and rear sides and the peripheral portion are opened and the front and rear openings of the filter member, And a front and a rear reinforcing bars for connecting and reinforcing the front end portion and the rear end portion.
Such a conventional polymer filter is installed so as to have the same plane as the plane of the filtration tank, or several small volumes are stored in the inside of the housing.
There is a problem that foreign matters are filtered only on one surface of the filter, that is, the surface on which the wastewater flows, and the accumulated foreign substances block one surface of the filter, resulting in a low filtration efficiency. In the case of the filtration device, not only does the filter not float in the water but floats on the water surface, and foreign matter accumulates only on the surface of the floating filter toward the water, and the filtration efficiency is lowered due to clogging of the filter.
SUMMARY OF THE INVENTION The present invention has been developed to solve the problems of the conventional art as described above, and it is an object of the present invention to provide a polyurethane filter which is easy to clean, and an initial excellent filtration apparatus using the polyurethane filter.
More specifically, the present invention relates to a polyurethane foam which is made of polyurethane and has a plurality of openings and a closed-cell mixture and has a plurality of voids, and is rotated by receiving resistance from aeration air The present invention has an object to provide a polyurethane filter which can be easily cleaned as the filter is rotated by sprayed washing water as well as an initial excellent filtration apparatus using the same.
In order to accomplish the above object, the present invention provides a polyurethane filter for initial filtration, which comprises polyol and lsocyanate as main raw materials and is prepared by foaming at room temperature with a catalyst, a foam stabilizer, a foaming agent and an additive, A polyurethane filter having a plurality of voids in which an open cell and a closed cell are mixed and is characterized in that the polyurethane filter is made of polyurethane The filter is pushed or rotated, and a large number of irregularities are formed on the surface so as to widen the surface area and widen the passage area of the wastewater to be filtered.
Inside the polyurethane filter, a polyurethane filter is prevented from rising to the water surface of the wastewater to be filtered, and a weight is further installed so that when the washing water is sprayed, floats, rotates and falls, it collides with a neighboring polyurethane filter .
The polyurethane filter may be one of a cylinder, a polyhedron, a sphere, and an ellipsoid.
According to another aspect of the present invention, there is provided an initial excellent filtration apparatus using a polyurethane filter, which is made by using a polyurethane filter, and installed in a filtration tank to overflow the wastewater flowing into a lower portion through a polyurethane filter, A filtration apparatus for filtering fine solids and suspended matters, comprising: a tubular body having a receiving space therein; a bottom having a plurality of through holes; A plurality of polyurethane filters stored inside the filter housing; And a filter press plate which is formed in a plate shape and has a plurality of water holes and is installed inside a filter housing in which a plurality of the polyurethane filters are stored to prevent the polyurethane filter from rising on the water surface .
It is preferable that a traction bolt is connected to a top edge of the filter housing, to which a pulling means for pulling the filter housing from the filtration tank is connected.
As described above, in the initial excellent filtration apparatus using the polyurethane filter according to the present invention, a large number of irregularities are formed on the surface of the filter, so that the air that is aerated acts on the irregularities to rotate the filter, It is possible to increase the filtration efficiency by collecting floating matters evenly.
In addition, the present invention can increase the filtration efficiency by providing a weight in the interior of the polyurethane filter so that the filter is placed in the water without floating on the water surface. In addition, when the washing water is sprayed, So that the cleaning can be performed more cleanly.
1 is a perspective view of an example of a polyurethane filter according to the present invention;
2 is a cross-sectional view of an example of a polyurethane filter according to the present invention
3 is an exploded perspective view of an example of a filter medium constituting an initial excellent filtration apparatus using a polyurethane filter according to the present invention.
4 is a cross-sectional view of an example of an initial excellent filtration apparatus using a polyurethane filter according to the present invention
5 is an enlarged photograph of a part of the polyurethane filter according to the present invention
6 is a diagram showing an example of a non-point pollution abatement facility equipped with an initial excellent filtration apparatus using the polyurethane filter according to the present invention
While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.
Like reference numerals are used for like elements in describing each drawing. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The present invention can not only uniformly filter the entire filter by rotating due to the pressure of air to be augmented but also enhance the impact force when the filters collide with each other by the water pressure of the sprayed washing water, have.
The initial polyurethane filter for excellent filtration according to the present invention is prepared by foaming a catalyst, a foam stabilizer, a foaming agent, and an additive by stirring and mixing at room temperature using polyol and isocyanate as main raw materials, The
The
As shown in FIG. 6, the conventional wastewater treatment facility includes a
The
As the
In addition, when the
The high-pressure washing water injected from the washing nozzle impacts the
However, since the
As shown in the drawing, the
The
The weight of the
When the
Although the
The
As shown in FIG. 4, the
As shown in FIG. 3, the
In order to prevent the
Further, it is preferable that the
The
In this way, the
In addition, the
Of course, the pulling
1: Filtration device
10: Polyurethane filter
10w: unevenness
11: Weight
20: filter media
20h: Through hole
21:
22: Towing bolts
100: Pretreatment tank
110: preprocessed perforated plate
200: Whirlpool
210: vortex tank
300: filtration tank
400: Stagnation tank
410; Drain pump
500: Treatment tank
510: backwash pump 520: wash nozzle
600: Aeration device
610: Aeration nozzle
Claims (5)
The polyurethane filter 10 is provided with a plurality of concave and convex surfaces on the surface thereof so that the polyurethane filter is pushed or rotated by the levitation force of the aeration air or water pressure to the water to be sprayed and the surface area is widened, (10w)
Inside the polyurethane filter 10, the polyurethane filter is prevented from rising to the water surface of the wastewater to be filtered. When the washing water is sprayed, floated, rotated and dropped, the polyurethane filter collides with the neighboring polyurethane filter, 11. The polyurethane filter according to claim 1,
Wherein the polyurethane filter (10) is one of a cylinder, a polyhedron, a sphere, and an ellipsoid.
(20) having a tubular shape having a receiving space therein and having a plurality of water holes (20h) at its bottom and an open top;
A plurality of polyurethane filters (10) stored inside the filter housing (10); And
A plurality of water through holes 21h are formed in the shape of a plate and a plurality of the polyurethane filters are installed inside the filter media housing to prevent the polyurethane filter from rising on the water surface In addition,
The polyurethane filter 10 is provided with a plurality of concave and convex surfaces on the surface thereof so that the polyurethane filter is pushed or rotated by the levitation force of the aeration air or water pressure to the water to be sprayed and the surface area is widened, (10w)
Inside the polyurethane filter 10, the polyurethane filter is prevented from rising to the water surface of the wastewater to be filtered. When the washing water is sprayed, floated, rotated and dropped, the polyurethane filter collides with the neighboring polyurethane filter, 11) is installed on the upper surface of the polyurethane filter.
Further comprising a traction bolt (22) connected to a trailing means for traction of the filter media from the filtration tank at an upper edge of the filter media tank (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020160040905A KR101646534B1 (en) | 2016-04-04 | 2016-04-04 | polyurethane filter and priming rain filtering device therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020160040905A KR101646534B1 (en) | 2016-04-04 | 2016-04-04 | polyurethane filter and priming rain filtering device therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR101646534B1 true KR101646534B1 (en) | 2016-08-08 |
Family
ID=56712077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020160040905A KR101646534B1 (en) | 2016-04-04 | 2016-04-04 | polyurethane filter and priming rain filtering device therefor |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR101646534B1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106759646A (en) * | 2016-12-14 | 2017-05-31 | 浙江建设职业技术学院 | A kind of sponge urban pavement rain water collecting system and installation method |
| WO2018151468A1 (en) * | 2017-02-14 | 2018-08-23 | (주)엘앤에이치 에코환경 | Stationary-phase carrier for purifying sewage/wastewater and sewage treatment device using same |
| KR101900251B1 (en) * | 2018-01-26 | 2018-09-19 | (주)엘앤에이치 에코환경 | Fixed bed microbial media for wastewater treatment and wastewater treatment facilities using the media |
| CN111705904A (en) * | 2020-05-06 | 2020-09-25 | 安徽科技学院 | Environment-friendly landscape rainwater is collected and water recycling system |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0892404A (en) * | 1994-09-27 | 1996-04-09 | Nippon Unicar Co Ltd | Flexible polyurethane foam, its preparation, and foam stabilizer therefor |
| JPH10202283A (en) * | 1997-01-17 | 1998-08-04 | Nkk Corp | Filter material for biological contact filtration |
| KR100456366B1 (en) | 2002-12-05 | 2004-11-10 | 김교철 | A filter for suspended solid to remove and the water treatment system by this filter |
| KR100842880B1 (en) * | 2007-04-13 | 2008-07-02 | (주) 디아이엔바이로 | Filter-cartridge for storm water treatment and storm water treatment device |
| KR20090008716A (en) | 2007-07-18 | 2009-01-22 | (주) 해동에이앤씨 | Ultra density cylindrical buoyant filter |
| KR100992828B1 (en) | 2009-04-15 | 2010-11-09 | 주식회사 환경시설관리공사 | Equipment for the treatment of waste liquid using filter |
| KR101135968B1 (en) | 2011-10-28 | 2012-04-17 | 스톰파크주식회사 | Ultra density filter |
| JP5353010B2 (en) * | 2008-01-11 | 2013-11-27 | 株式会社ブリヂストン | Film removal polyurethane foam and fluid filter |
-
2016
- 2016-04-04 KR KR1020160040905A patent/KR101646534B1/en active IP Right Grant
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0892404A (en) * | 1994-09-27 | 1996-04-09 | Nippon Unicar Co Ltd | Flexible polyurethane foam, its preparation, and foam stabilizer therefor |
| JPH10202283A (en) * | 1997-01-17 | 1998-08-04 | Nkk Corp | Filter material for biological contact filtration |
| KR100456366B1 (en) | 2002-12-05 | 2004-11-10 | 김교철 | A filter for suspended solid to remove and the water treatment system by this filter |
| KR100842880B1 (en) * | 2007-04-13 | 2008-07-02 | (주) 디아이엔바이로 | Filter-cartridge for storm water treatment and storm water treatment device |
| KR20090008716A (en) | 2007-07-18 | 2009-01-22 | (주) 해동에이앤씨 | Ultra density cylindrical buoyant filter |
| JP5353010B2 (en) * | 2008-01-11 | 2013-11-27 | 株式会社ブリヂストン | Film removal polyurethane foam and fluid filter |
| KR100992828B1 (en) | 2009-04-15 | 2010-11-09 | 주식회사 환경시설관리공사 | Equipment for the treatment of waste liquid using filter |
| KR101135968B1 (en) | 2011-10-28 | 2012-04-17 | 스톰파크주식회사 | Ultra density filter |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106759646A (en) * | 2016-12-14 | 2017-05-31 | 浙江建设职业技术学院 | A kind of sponge urban pavement rain water collecting system and installation method |
| WO2018151468A1 (en) * | 2017-02-14 | 2018-08-23 | (주)엘앤에이치 에코환경 | Stationary-phase carrier for purifying sewage/wastewater and sewage treatment device using same |
| KR101900251B1 (en) * | 2018-01-26 | 2018-09-19 | (주)엘앤에이치 에코환경 | Fixed bed microbial media for wastewater treatment and wastewater treatment facilities using the media |
| CN111705904A (en) * | 2020-05-06 | 2020-09-25 | 安徽科技学院 | Environment-friendly landscape rainwater is collected and water recycling system |
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