公开(公告)号：US09586837B2

公开(公告)日：2017-03-07

申请号：US13942409

申请日：2013-07-15

Applicant: AMERICAN WATER WORKS COMPANY, INC.

Inventor： Martin L. Robison

IPC: C02F1/32

CPC classification number: C02F1/325 ,  C02F2201/008 ,  C02F2201/009 ,  C02F2201/3225 ,  C02F2201/3227 ,  C02F2201/326 ,  C02F2209/008 ,  C02F2303/04 ,  C02F2307/14 ,  Y02A20/212

Abstract: Methods are provided for disinfecting water mains using ultraviolet (UV) light. One or more UV light sources are provided and secured to a movable device that moves axially in a pipe. The frequency and intensity of the UV light is determined based on characteristics of the pipe, such as its material and size. The rate at which the movable device moves through the pipe is also determined so that the interior surface of the pipe is properly disinfected. The movable device is remotely caused to move through the pipe.

Abstract translation: 提供了使用紫外线（UV）光消毒水管的方法。 提供一个或多个UV光源并固定到在管道中轴向移动的可移动装置。 紫外光的频率和强度根据管材的特性，如材料和尺寸确定。 移动装置移动通过管道的速率也被确定为使得管子的内表面被适当消毒。 可移动装置远程地通过管道移动。

公开(公告)号：US11142470B2

公开(公告)日：2021-10-12

申请号：US15449800

申请日：2017-03-03

Applicant: AMERICAN WATER WORKS COMPANY, INC.

Inventor： Martin L. Robison ,  Zia Bukhari ,  Yunjie Tu ,  Chandan Venkatesh

IPC: C02F1/32 ,  C02F1/72 ,  C02F1/78 ,  C02F1/00 ,  C02F9/00 ,  A61L2/18 ,  A61L2/10

Abstract: Methods and systems are provided for disinfecting water mains using ultraviolet (UV) light and advanced oxidation processes. One or more UV light sources are provided and secured to a movable device that moves axially in a pipe. The frequency and intensity of the UV light is determined based on characteristics of the pipe, such as its material and size. The rate at which the movable device moves through the pipe is also determined so that the interior surface of the pipe is properly disinfected. The movable device is remotely caused to move through the pipe. An oxidant supply component having a dispensing portion dispenses an oxidizing agent into the pipe. A portion of the emitted UV light may convert the dispensed oxidizing agent into additional oxidizing agents that further disinfect the pipe.