Evoqua Water Technologies Pte. Ltd.

Siemens Water Technologies Pte. Ltd.

Cameron Solutions, Inc.

Biochem Technology, Inc.

Wenjun Liu

Edward John Jordan

George W Smith

Joseph Edward Zuback

Fufang Zha

Jaw Fang Lee

Michael L Doyle

Daniel Edward Shannon

Robert A Elefritz, Jr

Marc E Roehl

Luis Eduardo Caires-Fernandez

Matthew Kuzma

James J Goodley

Paul M Gallagher

William D McGurney

Colin M McKean

Mark J Bubel, Sr

A method to remove oil from an oily water stream includes the step of pressure controlling a release of dissolved gases from the stream as the stream passes through two or more stages of gas flotation treatment. The operating pressure of the first stage of flotation treatment is purposefully reduced relative to that of an upstream unit so that a certain controlled percent volume of dissolved gases is released. The operating pressure of the second stage of flotation treatment is then purposefully reduced relative to that of the first stage so that another controlled percent volume of dissolved gases is released. Any subsequent flotation treatment stage is at a lower operating pressure than that of the previous stage so that the subsequent treatment stage releases a controlled percent volume of dissolved gases. By controlling the operating pressure in this way, overall separation performance is improved.

Pressure controlled gas flotation

A hybrid method and system of treating wastewater with reduced energy usage is disclosed. The treatment system has a sorption system, an anaerobic digester that digests or converts at least a portion of the solids or sludge from the sorption system, and an aerobic treatment tank that partially reduces oxygen demand of a portion of the sludge from the sorption tank.

Hybrid aerobic and anaerobic wastewater and sludge treatment systems and methods

A hybrid method and system of treating wastewater with reduced energy usage is disclosed. The treatment system has a sorption system and an anaerobic digester that digests or converts at least a portion of the solids or sludge from the sorption system.

A method and system of treating wastewater is disclosed. The treatment system has a nitrification-denitrification system comprising a sorption system, a biofilm system, and an anaerobic digester that digests or converts at least a portion of the solids or sludge from the sorption system and biofilm system.

Methods and systems for treating wastewater

Systems and methods for treating wastewater including a dissolved air flotation operation performed upon a portion of a mixed liquor output from a contact tank prior to the mixed liquor entering a biological treatment tank.

Contact-stabilization/prime-float hybrid

This invention is directed to a wastewater treatment system having a fluidizable media carrying anoxic bacteria in a first treatment zone and a filter membrane positioned in a second treatment zone. A wastewater is contacted with the fluidizable media and further contacted with air and a filter membrane.

Method for treating wastewater

Wastewater treatment system

A method of controlling the operating parameters of a membrane bioreactor system, the method including the steps of determining a control algorithm based on the relationship between the value of a parameter of the influent provided to the membrane bioreactor system and an optimal performance measurement parameter of the system and controlling one or more operating parameters of the membrane bioreactor system using the determined control algorithm.

Dynamic control of membrane bioreactor system

The invention is directed to a wastewater treatment system having an anoxic biological treatment zone, an aerobic biological treatment zone and a separator. The concentration of oxygen in streams within the system is strategically managed for improved removal of nutrient from the wastewater. A source of biodegradable carbon may be introduced to reduce the concentration of oxygen within the system. An effective treatment time under anoxic or aerobic conditions may further be varied.

Wastewater treatment system and method

This invention relates to systems for treating wastewater and more particularly to removing nutrients from wastewater in a wastewater treatment system. Wastewater tanks, each having membrane filters, are arranged in series. Each tank is equipped with respective inlets and outlets and an air supply as well as detectors for monitoring various wastewater parameters. A controller is coupled to the detectors, inlets and outlets for effecting sequences of opening and closing the inlets and outlets and turning the air supplies on and off in response to various detecting conditions and effects different operations, including a cleaning mode, in different cycles.

Growing community of inventors

Wayne, PA, United States of America

Wenjun Liu