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| Number | Title | Issue Date |
| 8153007 | Method of treating wastewater A method of treating a wastewater, containing the steps of: filtering a wastewater supplied into an activated sludge tank and biologically-treated therein, in a membrane module installed outside the activated sludge tank; chemical-cleaning the membrane module with a... | 04/10/2012 |
| 8147695 | Method of removing phosphorus from wastewater A process for removing phosphorus from wastewater wherein an iron or aluminum salt is added to the wastewater. The iron or aluminum salt results in the precipitation of certain iron or aluminum species that include phosphorus adsorption sites. These iron or phosphor... | 04/03/2012 |
| 8097161 | Wastewater treatment method The present invention provides a method that allows solid-liquid separation of activated sludge and a treated liquid to be carried out stably and efficiently by suitably evaluating the risk of clogging prior to membrane clogging and adopting necessary and adequate c... | 01/17/2012 |
| 8038881 | Wastewater treatment A system and method for treating wastewater by continuously flowing wastewater into a chemostat and continuously discharging clean water out of the chemostat. The system can include sensors and an electronic controller for on-line measuring ambient parameters in the... | 10/18/2011 |
| 7875180 | Water treatment apparatus and method An apparatus for the biological treatment of saltwater-based domestic wastewater, the apparatus having an inlet for the introduction of the saltwater-based domestic wastewater, an outlet for the removal of treated wastewater, means for monitoring the salinity level ... | 01/25/2011 |
| 7862722 | Sewage treatment control device, method, and sewage treatment system A sewage treatment control device, a method and a sewage treatment system, are disclosed. In one example, the sewage treatment control device includes measuring units having sensors for inspecting specific components in water, respectively; validity verification uni... | 01/04/2011 |
| 7754082 | Method and apparatus for control of a gas or chemical A system and method for control of a gas and/or chemical for treatment of a fluid, and for monitoring the operation of such a system. In one embodiment, the system comprises a reactor for receipt of the fluid and the gas and/or chemical for dissolving, mixing, diffu... | 07/13/2010 |
| 7718066 | Method and apparatus for controlling wastewater treatment processes Methods and apparatus for continuing, automated control of wastewater treatment processes. In certain preferred embodiments, method and apparatus for control of aeration in suspended growth biological treatment processes, especially in activated sludge processes. | 05/18/2010 |
| 7708887 | Combination membrane/biolytic filtration Described herein are methods and systems for combination membrane/biolytic filtration. In one embodiment a filtration system is operated under suction. The arrangement includes a feed tan (5) having a smaller filtrate vessel (6) positioned therein. The... | 05/04/2010 |
| 7662287 | Wastewater denitrification system The disclosed process and system are used for the denitrification of wastewater. The system comprises: an influent flow meter for measuring an influent flow Q; an influent concentration analyzer for measuring an influent dissolved oxygen concentration DOin | 02/16/2010 |
| 7655142 | Dynamic control of membrane bioreactor 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 ... | 02/02/2010 |
| 7645385 | Method and arrangement for processing nitrogen-concentrated effluents in a sequential fractionated cycle biological reactor The invention relates to a method for processing nitrogen-concentrated effluents by ammonia oxidation into nitrites followed by nitrite denitritation in a gaseous nitrogen in a sequential biological reactor (1) consisting in pouring a processable effluent vol... | 01/12/2010 |
| 7544299 | Biological nutrient removal process and process control for same The present disclosure describes an improved system and method for treating wastewater or other liquid. Furthermore, the present disclosure provides a control program for operating the system and method. In one embodiment, the treatment process utilizes a biological... | 06/09/2009 |
| 7494588 | Wastewater purification system An object of the present invention is to provide a control method, for a wastewater purification system, where the status of a wastewater purification system employing a batch activated sludge process is accurately understood by analyzing the data waveforms of DO, O... | 02/24/2009 |
| 7473365 | Method and installation for the biological treatment of water using activated sludge and comprising aeration regulation The biological water or wastewater treatment process described herein alternates aeration and anoxic phases during a water treatment process. According to one exemplary process, the water or wastewater is directed into a biological tank. The water or wastewater in t... | 01/06/2009 |
| 7429328 | Apparatus and methods for control of waste treatment processes Waste-treatment processes are enhanced through generation and introduction of specific biological populations customized to perform or favor specific tasks either during the main process, for the formation or precipitation of certain biological nutrients, or to acco... | 09/30/2008 |
| 7429329 | Hybrid chemical/mechanical dewatering method for sewage treatment plants A hybrid chemical/mechanical dewatering sewage treatment plant and method employing rapid sludge chemical dewatering technology in conjunction with slower conventional mechanical dewatering solids agglomeration and disposal methods to meet operating constraints and ... | 09/30/2008 |
| 7416669 | Biological nutrient removal process and process control system for same The present disclosure describes an improved system and method for treating wastewater or other liquid. Furthermore, the present disclosure provides a control program for operating the system and method. In one embodiment, the treatment process utilizes a biological... | 08/26/2008 |
| 7413654 | Wastewater treatment control A wastewater treatment method. The method includes establishing a setpoint value of oxidation-reduction potential of a mixed liquor, measuring a measured value of oxidation-reduction potential of the mixed liquor, comparing the measured value of oxidation-reduction ... | 08/19/2008 |
| 7407584 | Regulating air velocity continuously injected into biological water treatment reactor A method of treating wastewater wherein the biomass associated with the wastewater is subjected to simultaneous nitrification and denitrification in a single reactor. The method entails directing a wastewater influent stream into the reactor and measuring the concen... | 08/05/2008 |
| 7332077 | Methods for biological treatment of waste waters In a vertical shaft bioreactor, improved devices and methods are provided for enhanced secondary and/or tertiary treatment of wastewater, including residential, municipal and industrial wastewater. The devices and methods of the invention are useful for enhanced sec... | 02/19/2008 |
| 7329351 | Process and apparatus for increasing biological activity in waste treatment in bodies of water A process and apparatus for increasing biological activity in waste treatment ponds and lagoons. In this process a floating fluid circulator having an annular space between nested frusto-conical surfaces is operated in a pond or lagoon. An aerator within the scope o... | 02/12/2008 |
| 7323107 | Apparatus and method for the treatment of waste A waste treatment system suitable for domestic use and capable of producing water suitable for recycling within the household. The system includes a bioreactor (30) and a decomposition chamber (16). The bioreactor (30) is adapted to digest liqui... | 01/29/2008 |
| 7323108 | Combined biological and ballasted flocculation process for treating wastewater A wastewater treatment process is provided that entails both a biological or activated sludge process and a ballasted flocculation process. A first stream of wastewater is directed to a biological system for biologically treating the wastewater. The biological treat... | 01/29/2008 |
| 7319921 | Water treatment control system A water filter system comprising a control system, communication means, piping, actuators, sensors and valves. The control system utilizes a communication bus for controlling and monitoring water flow through the piping via control of the actuators and valves. The c... | 01/15/2008 |
| 7314563 | Membrane coupled activated sludge method and apparatus operating anoxic/anaerobic process alternately for removal of nitrogen and phosphorous Disclosed are a membrane coupled activated sludge method and apparatus operating anoxic/anaerobic processes alternately for removal of nitrogen and phosporus, wherein nitrogen and phosphorous together with organics in the sewage, wastewater, filthy water etc. can be... | 01/01/2008 |
| 7309432 | System and method for eliminating sludge via ozonation A system and method for the treatment and reduction of sludge via ozonation in a wastewater treatment process is disclosed. The sludge treatment system comprises: a sludge ozonation reactor coupled to an activated sludge treatment basin and adapted to receive a liqu... | 12/18/2007 |
| 7300592 | Water treatment device An object is to provide a water treatment device which can treat for-treatment water containing fluorine components into a state adaptable to the environment and which can treat nitrogen compounds without influencing a concentration of the for-treatment water contai... | 11/27/2007 |
| 7294272 | Method for the treatment of waste A waste treatment system suitable for domestic use and capable of producing water suitable for recycling within the household. The system includes a bioreactor (30) and a decomposition chamber (16). The bioreactor (30) is adapted to digest liqui... | 11/13/2007 |
| 7285212 | Method and apparatus for treatment of wastewater employing membrane bioreactors Methods and apparatus employing membrane filtration in biodegradation processes for treatment of wastewater are described. A bioreactor system is described having an equalization system, a membrane bioreactor system, and a controller. Aeration systems for a membrane... | 10/23/2007 |
| 7285217 | Removing odoriferous sulfides from wastewater A synergistic composition is provided for controlling odor from waste products. The composition comprises a combination of nitrate salt, sulfide-consuming compound, pH-elevating compound, sulfide-oxidizing, nitrate-reducing bacteria, and sulfide-oxidizing enzyme. Th... | 10/23/2007 |
| 7276104 | Installation for producing products using a fluid An apparatus and method for producing products using a fluid, which enables one to control the quality of the fluid from the point of production to the point of use, monitored on a microbiological, physical, and chemical basis. At least one sensor for the acquisitio... | 10/02/2007 |
| 7276165 | Method and plant for biological treatment of aqueous effluents for purification thereof The invention relates to a method for the biological treatment of effluents contaminated with impurities of urban or industrial origin, characterised in employing a single aeration tank (1) with a high mass charge in which the raw effluent or mechanically pre... | 10/02/2007 |
| 7276155 | Waste treatment apparatus with integral membrane apparatus A wastewater treatment method and apparatus including a denitrification (anoxic) chamber for denitrifying wastewater, an aeration basin with Bio-Wheel for aerating the wastewater, and a membrane device in which sludge particles are separated out of the wastewater, l... | 10/02/2007 |
| 7255791 | In situ method and apparatus for biodegradation of alkyl ethers and tertiary butyl alcohol A method and apparatus for the in situ purification of aquifers contaminated with ethers and/or alcohols using a bacterial culture, a method of delivering the culture to the subsurface, and an oxygen delivery system. ... | 08/14/2007 |
| 7221282 | Wireless wastewater system monitoring apparatus and method of use A wireless wastewater system monitoring apparatus generally comprising a processor/transceiver unit, housed within a synthetic protective enclosure formed outside of the wastewater system, and a fluid level sensor configured to send an overflow signal to the process... | 05/22/2007 |
| 7213006 | Method and apparatus for training a system model including an integrated sigmoid function Method and apparatus for training a system model with gain constraints. A method is disclosed for training a steady-state model having an input and an output and a mapping layer for mapping the input to the output, the model comprising a stored representation of a p... | 05/01/2007 |
| 7208090 | Wastewater treatment control Wastewater treatment controls that maintain the ORP of a mixed liquor at a relatively stable value during a wastewater treatment process such as an aerated-anoxic wastewater treatment process. The wastewater treatment control may compare a setpoint value of ORP and ... | 04/24/2007 |
| 7179387 | Treatment system and method for remediating a body of water A method for remediating a body of water includes sequestering a sector of water within the body of water. A communications channel is established between the water sector and a supply site. The water sector is at least partially remediated using the channel to alte... | 02/20/2007 |
| 7172699 | Energy efficient wastewater treatment for nitrogen and phosphorus removal In a wastewater treatment plant, the liquid side of the plant has preferably four stages for nitrification and/or denitrification, prior to further treatment such as a clarifier. Energy requirements are reduced by reducing aeration requirements. Four or more tanks/z... | 02/06/2007 |
