Christopher Roman Schulz
Engineers at 17 St, Denver, CO

6596542, Jul 22, 2003

Jan 8, 2001

09/756371

Christopher R. Schulz - Aurora CO 80016

A61L 210

436 1, 436164, 422 8205, 422 24, 250372, 2504741

A chemical actinometer for determining the absolute level of exposure to ultraviolet light of a fluid to be treated for disinfection purposes. The actinometer includes a translucent sample cell through which the chemical actinometric fluid flows. The area of exposure of the actinometric fluid is controlled by allowing the ultraviolet light to pass through only a portion of the sample cell. A suitable actinometric fluid is a combination of iodide and iodate in a solution. The sample cell is positioned within an ultraviolet disinfection reactor at a position to receive ultraviolet light from the ultraviolet light source.

6495036, Dec 17, 2002

Jan 8, 2001

09/756495

Christopher R. Schulz - Aurora CO 80016
James A. Reilly - Shrewsbury MA 01545

C02F 178

210199, 210205, 261 38, 261 74, 261DIG 42, 42218607

A device for introducing ozone uniformly into water flowing through a conduit for disinfecting the water. An ozone-contacting vessel is provided and includes a downflow tube through which water is caused to flow. The downflow tube is positioned vertically within a diffusion chamber. Within the downflow tube are a plurality of layers of transversely extending porous elements that are in communication with a source of ozone to provide a relatively uniform distribution of fine ozone bubbles over the cross-sectional area of the downflow tube. The downflow tube can be J-shaped, to convey ozonated water into downstream ozone reaction cells to permit oxidation or disinfection of the water being treated. An outlet seal plate is provided at the J-tube outlet to prevent backflow into the J-tube upon shutdown of the contactor cell containing the J-tube.

6762403, Jul 13, 2004

May 24, 2002

10/154983

Christopher R. Schulz - Aurora CO 80016

G01J 150

2502521, 2504741

A tubular holder for an actinometric monitoring element for monitoring the irradiance of ultraviolet light within a liquid to be treated for microorganism control. The holder extends into the interior of a vessel or a pipeline that carries a fluid to be treated by exposure to ultraviolet light. A transparent end cap is carried at the end of the holder that is within the vessel or pipeline. Positioned within the holder is an actinometric monitoring element that can be either a transparent container for an actinometric solution or a photocell, each for sensing the irradiance of ultraviolet light emitted by light sources positioned within the vessel or pipeline. The holder is removably received in a sleeve that extends through the wall of the vessel or pipeline.

2005024, Nov 10, 2005

Feb 25, 2005

11/065768

Christopher Schulz - Aurora CO, US
Stephen Lohman - Conifer CO, US

A61L002/18

422028000, 422292000

A method and apparatus for disinfecting the interior of pipelines and conduits, particularly water mains. Ozone is utilized as the disinfectant vehicle to neutralize microbial contamination of the conduit. An ozone generation system includes a venturi injector for introducing ozone into pressurized water to provide a treating solution that is introduced into and that flows along a predetermined length of the conduit to be treated. The ozone concentration is regulated to maintain an ozone residual at the conduit outlet of about 0.2 mg/L to about 0.3 mg/L for a time sufficient to assure the desired level of disinfection of the conduit interior. Carbon dioxide can be added to improve the ozone residual stability and the effectiveness of disinfection. The apparatus is transportable and can be carried by a transportation vehicle, such as a truck or trailer, for on-site disinfection of pipelines at varying sites.

6940075, Sep 6, 2005

Jul 23, 2003

10/625835

Christopher R. Schulz - Aurora CO, US

B01J019/12

250432R, 210748, 210150, 4221863

A disinfection reactor for disinfecting liquid, such as water from a water filtration plant, by exposing the liquid to ultraviolet light. The reactor includes a generally rectangular reactor vessel and two or more medium pressure ultraviolet lamps that extend within the reactor vessel in a direction transverse to the direction of liquid flow therethrough. The reactor vessel includes liquid guide surfaces that guide liquid to flow in a converging flow path having a reduced-area flow region in the vicinity of the ultraviolet lamps. The ultraviolet lamps are positioned spaced from and between the guide surfaces.

7364654, Apr 29, 2008

Jan 5, 2005

11/029857

Christopher Schulz - Centennial CO, US

C02F 1/32

2101981, 210278, 210279, 210288, 250436

A method and apparatus are provided for a water treatment system that includes both filtration and ultraviolet disinfection elements in a single unit. Various embodiments include a complete treatment system having replaceable filter elements or granular filter media and ultraviolet disinfection within a single vessel. A control valve controls flow through the system in filtering, backwashing, cleaning, and rinsing modes of operation. Other embodiments include couplings that may be adapted to new or existing treatment systems to provide ultraviolet disinfection to a vessel containing replaceable filter elements or granular filter media. The coupling is adapted to receive a control valve assembly that controls flow through the vessel in filtering, backwashing, cleaning, and rinsing modes of operation.

2004005, Mar 18, 2004

Sep 14, 2002

10/243971

Christopher Schulz - Aurora CO, US
Stephen Lohman - Conifer CO, US

C02F001/78

210/760000

A method and apparatus for disinfecting the interior of pipelines and conduits, particularly water mains. Ozone is utilized as the disinfectant vehicle to neutralize microbial contamination of the conduit. An ozone generation system includes a venturi injector for introducing ozone into pressurized water to provide a treating solution that is introduced into and that flows along a predetermined length of the conduit to be treated. The ozone concentration is regulated to maintain an ozone residual at the conduit outlet of about 0.1 mg/L to about 0.2 mg/L for a time sufficient to assure the desired level of disinfection of the conduit interior.

2004005, Mar 18, 2004

Sep 14, 2002

10/244147

Christopher Schulz - Aurora CO, US

G01N035/08, G01N033/00

436/135000, 436/052000, 436/053000, 422/081000, 422/082000, 422/103000

Apparatus for determining the ozone decay rate constant for an ozone-in-water solution. The apparatus includes a single ozone residual sensor, to which a sample flow is directed to measure the initial ozone residual concentration, and to which a delayed flow stream of the same solution is directed to measure the ozone residual concentration after passage of a particular time interval. The time delay of the flow stream is achieved by passing the flow stream through a chamber that includes a tubing coil through which the sample stream flows, after which the ozone residual concentration of the delayed sample stream is measured by the same ozone residual sensor. A portion of the incoming flow stream is diverted to flow through the chamber to maintain the delayed sample stream at substantially the same temperature as the incoming flow stream.

2005013, Jun 23, 2005

Dec 23, 2003

10/743032

Christopher Schulz - Centennial CO, US

C02F009/00, C02F009/12, C02F001/32

210256000, 210748000, 210209000

An in-home water treatment system that provides three stages of treatment for incoming water. The first treatment stage is a particulate removal stage, utilizing a spun fiber filter pad. The second treatment stage is a chemical compound removal stage, utilizing a carbon block filter. The third treatment stage is a disinfection stage utilizing an ultraviolet lamp. The three treatment stages are contained within a tubular enclosure to provide stage-by-stage treatment of the incoming water to improve its quality.

2009023, Sep 17, 2009

Mar 17, 2008

12/077022

Christopher Schulz - Centennial CO, US

C02F 1/32, B01J 19/12, B01D 24/38, C02F 1/00, C02F 1/48

210108, 210137

A method and apparatus are provided for an advanced water treatment system that includes filtration, physical conditioning, and ultraviolet disinfection elements in a single unit. A control valve controls flow through the system in filtering, backwashing, cleaning, and rinsing modes of operation.