Voorhees, NJ, United States

American Water Works

amwater.com
Voorhees, NJ, United States

American Water Works Association is an international non-profit, scientific and educational association founded to improve water quality and supply. Established in 1881, it has a membership of around 50,000 members worldwide.AWWA members include: water utilities, treatment plant operators and managers, scientists, environmentalists, manufacturers, academics, regulators, and others with an interest in water supply and public health. AWWA works through advocacy, communications, conferences, education and training, science and technology, and local action among 43 AWWA Sections throughout North America. Wikipedia.


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Patent
American Water Works | Date: 2017-03-03

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.


Patent
American Water Works | Date: 2017-03-28

An apparatus for detecting and repairing leaks in buried pipes is described. The apparatus includes a control device and a pipe drone, the pipe drone comprising a housing, a leak detection component, a pipe repairing component, a propulsion device, and a communication component. The pipe drone and the control device may be separate but can be communicatively coupled either wirelessly or by a tether so that the control device can power and/or control the pipe drone, the pipe drone configured to detect and repair leaks in a pipe through which the drone is traveling. The pipe drone may be operated manually or be configured via the control device to operate autonomously to detect and fix leaks within the pipe.


An apparatus for providing a temporary electrical grounding connection is described. The apparatus comprises a cable electrically joining first and second conductive couplings, the first and second conductive couplings each electrically coupled to a conductive surface using a clamp, magnetic component, or other connection component. A conductive coupling may be connected to the magnetic component using a clamp connected to a stub extending from the magnetic component, and there may be multiple clamps or magnetic components used in different combinations or series to provide an electrical bypass between two or more conductive surfaces.


Patent
American Water Works | Date: 2013-07-15

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.


Patent
American Water Works | Date: 2015-05-08

Processes and systems are provided for simultaneously recovering coagulant and acid in a water treatment system. Sludge produced by the water treatment system is contacted with acid to form acidified sludge liquids. The acidified sludge liquids flow into a membrane assisted capacitive deionization system having both cation and anion exchange membranes. Metal cations from the acidified sludge liquids diffuse across at least one cation exchange membrane to form recovered coagulant, while anions from the acidified sludge liquids diffuse across at least one anion exchange membrane to form recovered acid. The diffusion rate of the metal cations across the cation exchange membranes is equal to or greater than the diffusion rate of the anions across the anion exchange membranes.


Patent
American Water Works | Date: 2014-05-30

Methods and systems are provided for treating wastewater to simultaneously remove nitrogen, carbon, and phosphorus. The process includes an anoxic tank that receives at least two streams, including plant influent wastewater and return activated sludge. These streams are mixed in the anoxic tank to promote phosphorus release and fermentation of particulate and dissolved organic matter. The mixed liquor is transferred to an aerated tank having low dissolved oxygen concentrations to promote development of phosphorus-release bacteria that is eventually recycled to the anoxic tank by way of the return activated sludge. Simultaneous nitrification, denitrification, and phosphorus release occur in the aerated tank. A membrane tank separates treated effluent from activated sludge in a membrane tank.


Patent
American Water Works | Date: 2016-01-28

An apparatus for detecting and repairing leaks in buried pipes is described. The apparatus includes a control device and a pipe drone, the pipe drone comprising a housing, a leak detection component, a pipe repairing component, a propulsion device, and a communication component. The pipe drone and the control device may be separate but can be communicatively coupled either wirelessly or by a tether so that the control device can power and/or control the pipe drone, the pipe drone configured to detect and repair leaks in a pipe through which the drone is traveling. The pipe drone may be operated manually or be configured via the control device to operate autonomously to detect and fix leaks within the pipe.


Patent
American Water Works | Date: 2015-12-07

An apparatus for providing a temporary electrical grounding connection is described. The apparatus comprises a cable electrically joining first and second conductive couplings, the first and second conductive couplings each electrically coupled to a conductive surface using a clamp, magnetic component, or other connection component. A conductive coupling may be connected to the magnetic component using a clamp connected to a stub extending from the magnetic component, and there may be multiple clamps or magnetic components used in different combinations or series to provide an electrical bypass between two or more conductive surfaces.


Methods and systems are provided for treating wastewater to simultaneously remove nitrogen, carbon, and phosphorus, while recovering energy in the form of methane and carbon dioxide. An ammonia-containing stream is directed to a pretreatment tank that produces excess sludge, biogas, and a pretreated stream. The pretreated stream has at least 45% less carbon than the ammonia-containing stream. The pretreated stream is then directed to an anoxic tank, which promotes phosphorus release and fermentation of particulate and dissolved organic matter. The mixed liquor is transferred to an aerated tank having low dissolved oxygen concentrations to promote development of phosphorus-release bacteria that is eventually recycled to the anoxic tank by way of the return activated sludge. Simultaneous nitrification, denitrification, and phosphorus release occur in the aerated tank. A membrane tank separates treated effluent from activated sludge in a membrane tank.


Patent
American Water Works | Date: 2012-06-05

Processes and systems are provided for simultaneously recovering coagulant and acid in a water treatment system. Sludge produced by the water treatment system is contacted with acid to form acidified solids. The acidified solids flow into a combined membrane treatment tank having both cation and anion exchange membranes. Metal cations from the acidified solids cell diffuse across the cation exchange membranes to form recovered coagulant, while anions from the acidified solids diffuse across the anion exchange membranes to form recovered acid. The diffusion rate of the metal cations across the cation exchange membranes may be equal to or greater than the diffusion rate of the anions across the anion exchange membranes.

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