Urban runoff water treatment methods and systems

• US 7,344,640 B2
• Filed: 09/02/2005
• Issued: 03/18/2008
• Est. Priority Date: 03/29/2001
• Status: Expired due to Fees

• Current Assignee: Clear Creek Systems, Inc.
• Original Assignee: Clear Creek Systems, Inc.
• Inventors: Gannon, Guy Timothy, Gannon, Joseph Charles
• Primary Examiner(s): Upton; Christopher
• Application Number:
  US11/219,229
• Publication Number:
  US 20060021943A1
• Time in Patent Office: 928 Days
• Field of Search: 210/663, 210/668, 210/669, 210/747, 210/748, 210/760, 210/143, 210/170, 210/241, 210/266, 210/275, 210/290
• US Class Current: 210/747.1
• CPC Class Codes: B01D 36/02 Combinations of filters of different kinds B01D29/50, B01D33/35 take precedence
• CPC Class Codes: C02F 1/001 Processes for the treatment of water whereby the filtration technique is of importance C02F1/44 takes precedence; construction of filters in general B01D24/00 - B01D41/00
• CPC Class Codes: C02F 1/281 using inorganic sorbents
• CPC Class Codes: C02F 1/32 with ultraviolet light
• CPC Class Codes: C02F 1/78 with ozone C02F1/4672 takes precedence
• CPC Class Codes: C02F 2103/001 Runoff or storm water
• CPC Class Codes: C02F 2201/008 Mobile apparatus and plants, e.g. mounted on a vehicle for biological treatment C02F2203/008
• CPC Class Codes: C02F 2209/005 Processes using a programmable logic controller [PLC]
• CPC Class Codes: C02F 2209/40 Liquid flow rate
• CPC Class Codes: C02F 2209/42 Liquid level
• CPC Class Codes: C02F 9/00 Multistage treatment of water, waste water or sewage
• CPC Class Codes: Y02W 10/37 using solar energy

Abstract

The apparatus and methods of the present invention enable efficient and appropriate treatment of Urban Water Runoff, so that the treated Urban water Runoff can be can be introduced into public waterways without contaminating such waterways. The system apparatus utilizes adsorptive Organoclay media, mechanical filtration and ultraviolet sterilization. The methods and apparatus of the present invention remove contaminants from Urban Water Runoff to a level which enable the resulting effluent to meet appropriate standards for introducing the treated Urban water Runoff in to public waterways. The method and apparatus of water treatment of the present invention does not utilize chlorine containing compounds which, when combined with organic compounds can produce THM'"'"'s that can become problematic when re-introduced to the downstream environment. The systems of the present invention can be made sufficiently compact so as to enable their use in remote locations.

Claims

1. A method of treating wastewater from Urban Water Runoff, the method comprising:

capturing untreated wastewater from Urban Water Runoff before the Urban Water Runoff reaches a public waterway, wherein the Urban Water Runoff results from surface water flows that are normally discharged to public waterway if not captured;

applying a mechanical filtration device to the wastewater under treatment so as to reduce an elevated level of particulate matter contained therein;

applying an adsorptive organoclay media filter to the wastewater under treatment so as to reduce an elevated level of hydrocarbon matter contained therein;

applying a sterilizer to the wastewater under treatment so as to reduce an elevated level of one of bacteriological and viral contaminants contained therein, wherein the wastewater is treated by the adsorptive organoclay media filter after being treated by the mechanical filtration device and before being treated by the sterilizer; and

discharging treated wastewater to the public waterway.

2. The method of claim 1, wherein the untreated wastewater results from precipitation.

3. The method of claim 1, wherein the untreated wastewater results from irrigation.

4. The method of claim 1, wherein the untreated wastewater results from fire fighting.

5. The method of claim 1, wherein the untreated wastewater results from a broken water line.

6. The method of claim 1, wherein the untreated wastewater results from a natural disaster.

7. The method of claim 1, wherein the untreated wastewater results from washing an automobile.

8. The method of claim 1, wherein the untreated wastewater results from watering a lawn.

9. The method of claim 1, wherein the untreated wastewater is water that flows on a pavement surface.

10. The method of claim 1, wherein the untreated wastewater is water that flows on a soil surface.

11. The method of claim 10, wherein the untreated wastewater is water that flows on a soil surface having a concentration of materials that inhibit ground percolation.

12. The method of claim 1, wherein the untreated water is water that flows on a street surface.

13. The method of claim 1, wherein the untreated wastewater is water that flows on a parking lot surface.

14. The method of claim 1, wherein the untreated wastewater includes human or animal waste.

15. The method of claim 1, wherein the untreated wastewater includes a pesticide.

16. The method of claim 1, wherein the untreated wastewater includes a bacteria or a viral pathogen.

17. The method of claim 1, wherein the untreated wastewater includes hydrocarbons.

18. The method of claim 1, wherein the untreated wastewater includes fecal coliform.

19. The method of claim 1, wherein untreated wastewater from the Urban Water Runoff is captured before it is discharged to a sewer.

20. The method of claim 1, wherein untreated wastewater from the Urban Water Runoff is captured before it combines with sewage.

21. The method of claim 1, wherein the untreated wastewater is captured from a holding tank or basin that collects the untreated wastewater.

22. The method of claim 1 being performed without chlorine.

23. A system for treating Urban Water Runoff, the system comprising:

a water inlet, said inlet capturing wastewater under treatment before the Urban Water Runoff reaches a public waterway, wherein the Urban Water Runoff results from surface water flows that are normally discharged to a public waterway if not captured;

a mechanical filter, said mechanical filter reducing an elevated level of particulate matter in the wastewater under treatment;

an adsorptive organoclay media filter reducing an elevated level of hydrocarbon contaminants in the wastewater under treatment;

a sterilizer that reduces an elevated level of viral and bacterial contaminants in the wastewater under treatment wherein the wastewater is treated by the adsorptive organoclay media filter after being treated by the mechanical filtration device and before being treated by the sterilizer;

a programmable logic unit that controls an actuation of the mechanical filter, the adsorptive organoclay media filter and the sterilizer; and

a water outlet that allows treated wastewater to exit the system and be discharged to the public waterway.

24. The system as set forth in claim 23 wherein said mechanical filter is a multi-media bed particulate filter.

25. The system of claim 23 wherein said mechanical filter is a composite string filter.

26. The system of claim 23 wherein said mechanical filter is a replaceable bag filter.

27. The system of claim 23 wherein said mechanical filter includes at least two of:

A multi-media bed particulate filter, a string wound particulate filter and a removable bag filter.

28. The system of claim 23 wherein said system includes an ozone generator, said ozone generator arranged to operate in side stream with said adsorptive organoclay media filter so as to avoid bio-fouling of said adsorptive organoclay media filter.

29. The system of claim 23 wherein said system includes a reverse osmosis filter, said reverse osmosis filter being arranged so as to purify the water under treatment, the output of the reverse osmosis filter being provided to the sterilizer, wherein treated wastewater from the sterilizer is discharged from the system and into the public waterway.

30. The system of claim 23, wherein the inlet is configured to capture the untreated wastewater from precipitation.

31. The system of claim 23, wherein the inlet is configured to capture the untreated wastewater from irrigation.

32. The system of claim 23, wherein the inlet is configured to capture the untreated wastewater from fire fighting.

33. The system of claim 23, wherein the inlet is configured to capture the untreated wastewater from a broken water line.

34. The system of claim 23, wherein the inlet is configured to capture the untreated wastewater from a natural disaster.

35. The system of claim 23, wherein the inlet is configured to capture the untreated wastewater from washing an automobile.

36. The system of claim 23, wherein the inlet is configured to capture the untreated wastewater from watering a lawn.

37. The system of claim 23, wherein the inlet is configured to capture the untreated wastewater from a pavement surface.

38. The system of claim 23, wherein the inlet is configured to capture the untreated wastewater from a soil surface.

39. The system of claim 38, wherein the untreated wastewater is from a source that has a concentration of materials that inhibit ground percolation.

40. The system of claim 23, wherein the untreated water is from a source that comprises water from a street surface.

41. The system of claim 23, wherein the untreated wastewater is from a source that comprises water from a parking lot surface.

42. The system of claim 23, wherein the untreated wastewater is from a source that comprises human or animal waste.

43. The system of claim 23, wherein the untreated wastewater is from a source that comprises a pesticide.

44. The system of claim 23, wherein the untreated wastewater is from a source that comprises a bacteria or a viral pathogen.

45. The system of claim 23, wherein the untreated wastewater is from a source that comprises hydrocarbons.

46. The system of claim 23, wherein the untreated wastewater is from a source that comprises fecal coliform.

47. The system of claim 23, wherein the inlet is configured to capture the untreated wastewater from the Urban Water Runoff before it is discharged to a sewer.

48. The system of claim 23, wherein the inlet is configured to capture the untreated wastewater from the Urban Water Runoff before it combines with sewage.

49. The system of claim 23, wherein the inlet is configured to capture the untreated wastewater from a holding tank or basin that collects the untreated wastewater.

50. The system of claim 23 being configured to operate without use of chlorine.