IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0970874
(2008-01-08)
|
등록번호 |
US-7658857
(2010-04-02)
|
발명자
/ 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
6 인용 특허 :
15 |
초록
Systems and methods for treating water passing through a catch basin may include first and second filters. In some embodiments, the filters each have a plurality of regions with different nominal flow rates.
대표청구항
▼
What is claimed is: 1. A system configured to treat water passing through a catch basin, the system comprising: a first filter comprising an open end, a sidewall portion, and a closed end opposite the open end, the open end of the first filter removably mounted below an inlet of the catch basin; an
What is claimed is: 1. A system configured to treat water passing through a catch basin, the system comprising: a first filter comprising an open end, a sidewall portion, and a closed end opposite the open end, the open end of the first filter removably mounted below an inlet of the catch basin; and a second filter extending from a first end portion having a first perimeter to a second end portion having a second perimeter larger than the first perimeter, the first end portion of the second filter removably mounted to define an opening below the inlet of the catch basin, and the second end portion of the second filter removably secured to an inner surface of the catch basin at a location spaced apart from the inlet of the catch basin, such that the second filter defines a surface separating an inner portion of a cavity of the catch basin from an outer portion of the cavity of the catch basin. 2. The system of claim 1, wherein the sidewall portion of the first filter defines a first region of the first filter having a first nominal flow rate and a second region of the first filter having a second nominal flow rate that is relatively greater than the first nominal flow rate, the second region of the first filter disposed between the first region of the first filter and the open end of the first filter. 3. The system of claim 2, wherein the sidewall portion of the first filter further defines a third region of the first filter having a third nominal flow rate relatively greater than the first nominal flow rate and relatively less than the second nominal flow rate, the third region of the first filter located between the first and second regions of the first filter. 4. The system of claim 2, wherein the sidewall portion of the first filter further defines a plurality of intermediate regions of the first filter located between the first region of the first filter and the second region of the first filter, each of the intermediate regions of the first filter having a nominal flow rate relatively greater than the nominal flow rate of an adjacent region of the first filter in the direction of the first region of the first filter and each of the intermediate regions of the first filter having a nominal flow rate relatively less than the nominal flow rate of an adjacent region of the first filter in the direction of the second region of the first filter. 5. The system of claim 1, wherein the sidewall portion of the first filter comprises a support structure comprising a first fabric having a first apparent opening size, the support structure lined with a second fabric having a second apparent opening size that is relatively smaller than the first apparent opening size. 6. The system of claim 5, wherein the second fabric comprises woven material. 7. The system of claim 1, wherein the system further comprises a frame removably mounted to a region of the inlet of the catch basin and the open end of the first filter is attached to the frame. 8. The system of claim 7, wherein the open end of the first filter is attached to the frame by a plurality of chains. 9. The system of claim 1, wherein the second filter comprises a first region of the second filter having a first nominal flow rate and a second region of the second filter having a second nominal flow rate relatively greater than the first nominal flow rate, the second region of the second filter disposed between the first region of the second filter and the first end portion. 10. The system of claim 9, wherein the second filter further comprises a third region of the second filter having a third nominal flow rate, the third region of the second filter located between the first and second region of the second filters, the third nominal flow rate relatively greater than the first nominal flow rate and relatively less than the second nominal flow rate. 11. The system of claim 1, wherein the first filter has an outer perimeter substantially identical in shape and smaller in size to an inner perimeter of the inlet to the catch basin. 12. The system of claim 1, wherein the second filter comprises a pleated material. 13. The system of claim 1, further comprising a support member attached to the second end portion of the second filter and removably secured to the inner surface of the catch basin. 14. The system of claim 1, further comprising a spacing member removably secured to an inner surface of the catch basin, the spacing member disposed between the second filter and an outlet of the catch basin. 15. The system of claim 1, wherein the second filter is removably mounted such that an outlet defined by the catch basin opens into the outer portion of the catch basin. 16. The system of claim 15, wherein the second filter is removably mounted such that an inlet pipe opens into the outer portion of the catch basin. 17. The system of claim 1, wherein the second end portion of the second filter is removably secured to a sidewall of the catch basin. 18. A method of treating runoff, comprising: suspending a first filter from an inlet of a catch basin in a position such that water and solid material passing through the inlet of the catch basin enters the first filter; installing a second filter in a catch basin in a position such that the second filter defines a continuous surface separating a cavity of the catch basin into an inner portion and an outer portion, wherein the first filter is suspended substantially within the inner portion of the cavity of the catch basin and the catch basin outlet is in the outer portion of the cavity of the catch basin; retaining some solid material within the first filter as water passes through the first filter into the inner portion of the cavity of the catch basin; and retaining some solid material within the inner portion of the catch basin as water passes through the second filter into the outer portion of the cavity of the catch basin and flows out the catch basin outlet. 19. The method of claim 18, wherein retaining some solid material within the first filter comprises providing a first degree of filtration to water that passes through a first region of the first filter having a first nominal flow rate; and providing a lower degree of filtration to water that passes through a second region of the first filter having a second nominal flow rate that is relatively greater than the first nominal flow rate. 20. The method of claim 18, comprising: after a time, removing the first filter from the catch basin; emptying the solid material retained in the first filter; and re-installing the first filter in the inlet of the catch basin. 21. The method of claim 18, comprising: after a time, removing solid material debris from the catch basin while the first filter is removed from the catch basin and the second filter is installed in the catch basin. 22. The method of claim 18, comprising routing flow from upstream portions of a drainage system through the outer portion of the cavity of the catch basin. 23. The method of claim 18, comprising discharging flow from upstream portions of a drainage system into the outer portion of the cavity of the catch basin. 24. A system configured to treat water passing through a catch basin, the system comprising: a filter extending from a first end portion having a first perimeter defining an opening to a second end portion having a second perimeter larger than the first perimeter, the first end portion attached to an inlet of a catch basin and the second end portion removably secured to an inner surface of the catch basin at a location spaced apart from the inlet of the catch basin, such that the filter defining a continuous surface separating an inner portion of a cavity of the catch basin from an outer portion of the cavity of the catch basin; wherein the filter comprises a first filter region having a first nominal flow rate and a second filter region having a second nominal flow rate relatively greater than the first nominal flow rate, the second filter region disposed between the first filter region and the first end portion. 25. The system of claim 24, wherein the filter further comprises a third filter region having a third nominal flow rate, the third filter region located between the first and second filter regions, the third nominal flow rate relatively greater than the first nominal flow rate and relatively less than the second nominal flow rate. 26. The system of claim 24, wherein the filter comprises a support structure and a separate porous liner material disposed inside the support structure. 27. The system of claim 24, wherein the filter comprises a pleated material. 28. The system of claim 24, further comprising a support member attached to the second end portion and removably secured to the inner surface of the catch basin. 29. The system of claim 24, further comprising a spacing member removably secured to an inner surface of the catch basin, the spacing member disposed between an outlet of the catch basin and the filter. 30. The system of claim 24, wherein the second end portion of the filter is removably secured to a side wall of the catch basin. 31. A method of treating runoff, comprising: installing a filter in a catch basin in a position in which a first end portion of the filter is attached to an inlet of the catch basin and a second end portion is removably secured to an inner surface of the catch basin at a location spaced apart from the inlet of the catch basin, such that the filter defines a continuous surface separating a cavity of the catch basin into an inner portion and an outer portion, the filter extending from the first end portion which has a first perimeter to the second end portion which has a second perimeter larger than the first perimeter; and retaining some solid material within the inner portion of the catch basin as water passes through the filter into the outer portion of the cavity of the catch basin and flows out an outlet of the catch basin. 32. The method of claim 31, comprising routing flow from upstream portions of a drainage system through the outer portion of the cavity of the catch basin. 33. The method of claim 31, comprising discharging flow from upstream portions of a drainage system into the outer portion of the cavity of the catch basin. 34. A method of treating runoff, comprising: installing a filter in a catch basin in a position in which a first end portion of the filter is removably mounted to define an opening below the inlet of the catch basin, and a second end portion of the filter removably secured to an inner surface of the catch basin at a location spaced apart from the inlet of the catch basin, such that the second filter defines a surface separating an inner portion of a cavity of the catch basin from an outer portion of the cavity of the catch basin, the filter extending from the first end portion which has a first perimeter to the second end portion which has a second perimeter larger than the first perimeter; and retaining some solid material within the inner portion of the catch basin as water passes through the filter into the outer portion of the cavity of the catch basin and flows out an outlet of the catch basin. 35. The method of claim 34, comprising routing flow from upstream portions of a drainage system through the outer portion of the cavity of the catch basin. 36. The method of claim 34, comprising discharging flow from upstream portions of a drainage system into the outer portion of the cavity of the catch basin.
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