US20010047954A1 - In-line storm water drain filter system - Google Patents
In-line storm water drain filter system Download PDFInfo
- Publication number
- US20010047954A1 US20010047954A1 US09/859,714 US85971401A US2001047954A1 US 20010047954 A1 US20010047954 A1 US 20010047954A1 US 85971401 A US85971401 A US 85971401A US 2001047954 A1 US2001047954 A1 US 2001047954A1
- Authority
- US
- United States
- Prior art keywords
- housing
- storm water
- inlet
- filter system
- water drain
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 73
- 239000010813 municipal solid waste Substances 0.000 claims abstract description 12
- 238000001914 filtration Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 239000002861 polymer material Substances 0.000 claims 1
- 238000004140 cleaning Methods 0.000 abstract description 10
- 230000000903 blocking effect Effects 0.000 abstract description 8
- 230000014759 maintenance of location Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 2
- 239000013049 sediment Substances 0.000 description 13
- 244000025254 Cannabis sativa Species 0.000 description 6
- 150000002430 hydrocarbons Chemical class 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 239000003657 drainage water Substances 0.000 description 2
- 239000011152 fibreglass Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- -1 gravel Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
Images
Classifications
-
- 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
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
-
- 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
- B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
- B01D29/52—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in parallel connection
-
- 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
- B01D29/70—Regenerating the filter material in the filter by forces created by movement of the filter element
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/12—Emergency outlets
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/12—Emergency outlets
- E03F5/125—Emergency outlets providing screening of overflowing water
Definitions
- the present invention is an in-line storm water drain filter and baffle box having a by-pass filter separator.
- the filter box is installed within a storm water drain pipe which directs storm water runoff through the storm water drainpipe and through the filter and baffle box prior to the storm water drain water passing through an outfall into a lake, pond or retention area.
- the drain water which is frequently laden with trash, grass clippings, tree limbs, sand, gravel, and other forms of sediment, is collected from streets, parking lots and other areas into a storm drain inlet where it is directed into a storm water drain pipe system.
- the drain water laden with trash and grass clippings, sand and gravel and frequently oil collected from the streets is fed through a grated entrance into a storm water catch basin and into a lake or retention pond.
- the retention pond can tolerate a certain amount of grass clippings but cannot tolerate hydrocarbons generated from vehicles used in parking lots or along the street.
- Rain on the paved surface of streets and parking lots moves accumulated oil on the street into the storm water drain system and into lakes and retention ponds.
- the present invention is added directly to the storm water drain pipe system in-line with the drainage pipes for collecting trash, grass clippings, tree limbs, sand, gravel, or other sorts of sediments and for collecting oil and hydrocarbons within the drain water passing through the drainage pipe system prior to the outfall of the drainage water into a lake or pond.
- the present system also provides for an easy cleaned of the filter system.
- An in-line storm water drain filter and baffle box is installed within a storm water drain pipe to direct storm water runoff through the storm water drain pipe and through the filter and baffle box prior to the storm water drain water passing through an outfall into a lake, pond or retention area.
- the filter system includes a housing having an inlet and an outlet and a plurality of chambers formed therein.
- a housing cover allows for access into the housing and a plurality of filter screens are mounted over each of the plurality of housing chambers for collecting trash from the storm water passing therethrough.
- the housing has a generally arcuate bottom.
- the filter system also has inlet and outlet cover frames for holding removably mounted blocker dampers for blocking the ingress and egress of storm drain water during cleaning of the filter system.
- An oil collection boom is removably mounted in the housing adjacent the inlet for collecting oil in the drain water entering the housing inlet.
- a method of cleaning the storm water drain filter system selects the filter system apparatus and blocks the egress and ingress of drain water while the system is being cleaned.
- FIG. 1 is a top elevation of a storm drain filter system in accordance with the present invention
- FIG. 2 is a side sectional view taken through a storm elevation system of FIG. 1;
- FIG. 3 is an end elevation of the filter box of FIGS. 1 and 2 having a cleaned top open.
- a baffle and filter box 10 may have a concrete or plastic housing 11 having a cover or top 12 which is hinged at 13 to the top of the housing 11 and supported with a pneumatic cylinder support 14 .
- the housing 11 has an inlet 15 sized to connect directly to a storm water drain pipe at one end and an outlet 16 at the other end thereof for connecting to a second storm water drain pipe.
- the housing 11 has a rounded bottom 17 for fast easy cleaning of the filter box when the top 12 is raised for cleaned.
- a frame 18 adjacent the input 15 for removably holding a slide-in fiberglass locking damper 20 and a second frame 21 is positioned in front of the output 16 to the housing 11 for supporting a second slide-in fiberglass blocking damper 22 for use when cleaning out the filter box 10 .
- Drainage water laden with trash, sediment and other deposits enters, as shown by the arrow 23 , into the housing and passes through a horizontally extending filter grill 24 and through an oil boom 25 containing material for absorbing hydrocarbons and oil passing within the water, which boom is placed over the filter screen 24 .
- the screen 24 is hinged with a hinge 26 for lifting the door for cleaning out the chamber 27 .
- the water passes through the chamber 27 while collecting sediment and a sediment flow deflector 28 blocks the circular flow of the water containing sediments to maintain the heavier sediments in the bottom of the chamber 27 .
- the water flows into a second chamber 30 having a pair of filter screens 31 and 32 thereover.
- Filter screen 31 folds on a hinge 26 while filter screen 32 folds on a hinge 33 , as illustrated by the arrows in FIG. 2.
- the drain water passing through the filter screens 31 and 32 into the chamber 30 is directed in a circular motion so that the chamber 30 also has a sediment flow deflector 34 therein.
- the storm water fluid passes through a fourth filter screen 35 hinged on the hinge 33 to direct the storm water into the chamber 36 .
- grass leaves, pieces of trees and the like is captured by the screens 30 , 31 , 32 and 35 and held above the chambers 27 , 30 and 36 while sand, gravel, and sediments are washed into the chambers 27 , 30 , and 36 .
- the oil booms 25 will capture oil and hydrocarbon residues passing thereinto to filter it from the water. If the filters get sufficiently stopped up, there is an overflow area 37 to allow the liquid to overflow to the output 16 without blocking the drain pipe.
- FIGS. 1 through 3 Cleaning out the filter system of FIGS. 1 through 3 requires that the cover 12 be raised, as shown in FIG. 3, and supported in an open position with the pneumatic cylinder 14 and inserting the blocking dampers 20 and 22 into the frames 18 and 21 to stop all water flow in both directions while cleaning the filter system.
- This feature is especially important when the baffle and filter box 10 is installed below the water level.
- Prior art filter boxes are square boxes and the round bottom 17 of box 11 makes it easier to clean out the bottom.
- the oil boom 25 can be removed and trash collected onto the filter screens 24 , 31 , 32 and 35 can be removed.
- the screens are rotated on their hinges to allow the cleaned of the rounded bottom of the filter box. This is accomplished by pumping out the sediment prior to closing the grills on their hinges and replacing the oil boom 25 .
- the blocking dampers 20 and 22 are then removed and the cover 12 closed.
- baffle boxes had to be pumped out with a large van truck while the water was still flowing through the box being cleaned which, in many cases, allowed these trucks to withdraw large amounts of water with the sediment and trash being removed from the boxes so that the truck fills with water before the trash is pumped out.
- This is avoided with the present invention which places blocking dampers at each end of the box during cleaning and which allows a rapid cleaned by virtue of the rounded bottom and hinged aluminum screens. Sediment flow deflectors are used to maintain the sediment in the boxes while the grass, leaves, and organic materials are supported on the filter screens.
- baffle box having a bypass filter, separators and oil booms has been provided which allows for an easier cleaned of the baffle box and more effectively filtering within the storm drain line of a storm drain water system.
- present invention is not to be construed as limited to the forms shown which are to be considered illustrative rather than restrictive.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Filtration Of Liquid (AREA)
Abstract
Description
- The present invention is an in-line storm water drain filter and baffle box having a by-pass filter separator. The filter box is installed within a storm water drain pipe which directs storm water runoff through the storm water drainpipe and through the filter and baffle box prior to the storm water drain water passing through an outfall into a lake, pond or retention area. The drain water, which is frequently laden with trash, grass clippings, tree limbs, sand, gravel, and other forms of sediment, is collected from streets, parking lots and other areas into a storm drain inlet where it is directed into a storm water drain pipe system. The drain water laden with trash and grass clippings, sand and gravel and frequently oil collected from the streets is fed through a grated entrance into a storm water catch basin and into a lake or retention pond. The retention pond can tolerate a certain amount of grass clippings but cannot tolerate hydrocarbons generated from vehicles used in parking lots or along the street. Rain on the paved surface of streets and parking lots moves accumulated oil on the street into the storm water drain system and into lakes and retention ponds.
- The present invention is added directly to the storm water drain pipe system in-line with the drainage pipes for collecting trash, grass clippings, tree limbs, sand, gravel, or other sorts of sediments and for collecting oil and hydrocarbons within the drain water passing through the drainage pipe system prior to the outfall of the drainage water into a lake or pond. The present system also provides for an easy cleaned of the filter system.
- An in-line storm water drain filter and baffle box is installed within a storm water drain pipe to direct storm water runoff through the storm water drain pipe and through the filter and baffle box prior to the storm water drain water passing through an outfall into a lake, pond or retention area. The filter system includes a housing having an inlet and an outlet and a plurality of chambers formed therein. A housing cover allows for access into the housing and a plurality of filter screens are mounted over each of the plurality of housing chambers for collecting trash from the storm water passing therethrough. The housing has a generally arcuate bottom. The filter system also has inlet and outlet cover frames for holding removably mounted blocker dampers for blocking the ingress and egress of storm drain water during cleaning of the filter system. An oil collection boom is removably mounted in the housing adjacent the inlet for collecting oil in the drain water entering the housing inlet. A method of cleaning the storm water drain filter system selects the filter system apparatus and blocks the egress and ingress of drain water while the system is being cleaned.
- Other objects, features, and advantages of the present invention will be apparent from the written description and the drawings in which:
- FIG. 1 is a top elevation of a storm drain filter system in accordance with the present invention;
- FIG. 2 is a side sectional view taken through a storm elevation system of FIG. 1; and
- FIG. 3 is an end elevation of the filter box of FIGS. 1 and 2 having a cleaned top open.
- Referring to FIGS. 1 through 3, a baffle and
filter box 10 may have a concrete orplastic housing 11 having a cover ortop 12 which is hinged at 13 to the top of thehousing 11 and supported with apneumatic cylinder support 14. Thehousing 11 has aninlet 15 sized to connect directly to a storm water drain pipe at one end and anoutlet 16 at the other end thereof for connecting to a second storm water drain pipe. Thehousing 11 has arounded bottom 17 for fast easy cleaning of the filter box when thetop 12 is raised for cleaned. Inside the housing is aframe 18 adjacent theinput 15 for removably holding a slide-infiberglass locking damper 20 and asecond frame 21 is positioned in front of theoutput 16 to thehousing 11 for supporting a second slide-infiberglass blocking damper 22 for use when cleaning out thefilter box 10. - Drainage water laden with trash, sediment and other deposits enters, as shown by the
arrow 23, into the housing and passes through a horizontally extendingfilter grill 24 and through anoil boom 25 containing material for absorbing hydrocarbons and oil passing within the water, which boom is placed over thefilter screen 24. Thescreen 24 is hinged with ahinge 26 for lifting the door for cleaning out thechamber 27. The water passes through thechamber 27 while collecting sediment and asediment flow deflector 28 blocks the circular flow of the water containing sediments to maintain the heavier sediments in the bottom of thechamber 27. The water flows into asecond chamber 30 having a pair offilter screens Filter screen 31 folds on ahinge 26 whilefilter screen 32 folds on ahinge 33, as illustrated by the arrows in FIG. 2. The drain water passing through thefilter screens chamber 30 is directed in a circular motion so that thechamber 30 also has asediment flow deflector 34 therein. The storm water fluid passes through afourth filter screen 35 hinged on thehinge 33 to direct the storm water into thechamber 36. There is atrash deflector screen 37 mounted to deflect trash from overflowing into theexit pipe 16. Thus, grass leaves, pieces of trees and the like is captured by thescreens chambers chambers oil booms 25 will capture oil and hydrocarbon residues passing thereinto to filter it from the water. If the filters get sufficiently stopped up, there is anoverflow area 37 to allow the liquid to overflow to theoutput 16 without blocking the drain pipe. - Cleaning out the filter system of FIGS. 1 through 3 requires that the
cover 12 be raised, as shown in FIG. 3, and supported in an open position with thepneumatic cylinder 14 and inserting the blockingdampers frames filter box 10 is installed below the water level. Prior art filter boxes are square boxes and theround bottom 17 ofbox 11 makes it easier to clean out the bottom. Once the input and output ends have been blocked with thetemporary blocking dampers oil boom 25 can be removed and trash collected onto thefilter screens oil boom 25. The blockingdampers cover 12 closed. - In the past, baffle boxes had to be pumped out with a large van truck while the water was still flowing through the box being cleaned which, in many cases, allowed these trucks to withdraw large amounts of water with the sediment and trash being removed from the boxes so that the truck fills with water before the trash is pumped out. This is avoided with the present invention which places blocking dampers at each end of the box during cleaning and which allows a rapid cleaned by virtue of the rounded bottom and hinged aluminum screens. Sediment flow deflectors are used to maintain the sediment in the boxes while the grass, leaves, and organic materials are supported on the filter screens.
- It should be clear at this time that a baffle box having a bypass filter, separators and oil booms has been provided which allows for an easier cleaned of the baffle box and more effectively filtering within the storm drain line of a storm drain water system. However, the present invention is not to be construed as limited to the forms shown which are to be considered illustrative rather than restrictive.
Claims (13)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/859,714 US6428692B2 (en) | 2000-05-30 | 2001-05-17 | In-line storm water drain filter system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US20739700P | 2000-05-30 | 2000-05-30 | |
US09/859,714 US6428692B2 (en) | 2000-05-30 | 2001-05-17 | In-line storm water drain filter system |
Publications (2)
Publication Number | Publication Date |
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US20010047954A1 true US20010047954A1 (en) | 2001-12-06 |
US6428692B2 US6428692B2 (en) | 2002-08-06 |
Family
ID=26902214
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US09/859,714 Expired - Lifetime US6428692B2 (en) | 2000-05-30 | 2001-05-17 | In-line storm water drain filter system |
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US (1) | US6428692B2 (en) |
Cited By (17)
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US20040040598A1 (en) * | 2002-08-30 | 2004-03-04 | Zimmerman Robert L. | Rainwater recovery system |
US20060201860A1 (en) * | 2005-03-11 | 2006-09-14 | Henry Happel | Storm water drain system |
WO2008039913A2 (en) * | 2006-09-27 | 2008-04-03 | John Sebastian Moll | Water pollution trap and methods of use thereof |
US20080116151A1 (en) * | 2006-11-17 | 2008-05-22 | Clifford James Suthard | Methods of removing solids from liquids |
US20080149188A1 (en) * | 2002-08-30 | 2008-06-26 | Charles River Watershed Association | Modular blocks for rainwater recovery system |
US20090152181A1 (en) * | 2007-12-17 | 2009-06-18 | Henry Happel | Backwashing filter basket |
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US20130087509A1 (en) * | 2011-09-09 | 2013-04-11 | University Of Maryland | Filtration system and method for removing suspended solids and affiliated pollutants from stormwater runoff using a geosynthetic filter |
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Cited By (23)
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US20040040598A1 (en) * | 2002-08-30 | 2004-03-04 | Zimmerman Robert L. | Rainwater recovery system |
US7025076B2 (en) | 2002-08-30 | 2006-04-11 | Charles River Watershed Association | Rainwater recovery system |
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US20060201860A1 (en) * | 2005-03-11 | 2006-09-14 | Henry Happel | Storm water drain system |
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