Patent application number | Description | Published |
20100126937 | WET AIR OXIDATION PROCESS USING RECYCLED CATALYST - A system and method for the treatment of process streams. A catalyst mediates a wet oxidation process at elevated temperatures and pressures for treating at least one undesirable constituent in an aqueous mixture. The aqueous mixture may be contacted with a catalyst and an oxidizing agent at an elevated temperature and a superatmospheric pressure. At least a portion of the catalyst may be precipitated by a pH adjustment and recycled back to contact the aqueous mixture | 05-27-2010 |
20100252500 | TREATMENT OF SPENT CAUSTIC WASTE - Systems and methods are provided for the treatment of caustic wastewater. Specifically, systems and methods are provided for combining refinery spent caustic and ethylene spent caustic solutions and treating the combined spent caustic mixture using a wet air oxidation process. | 10-07-2010 |
20110017664 | SUSPENDED MEDIA MEMBRANE BIOLOGICAL REACTOR SYSTEM AND PROCESS INCLUDING SUSPENSION SYSTEM AND MULTIPLE BIOLOGICAL REACTOR ZONES - A wastewater treatment system is provided comprising a biological reactor having a separation subsystem, a suspension system and a membrane operating system. The separation subsystem is constructed and arranged to maintain adsorbent material in the biological reactor with a mixed liquor. The suspension system is positioned in the biological reactor and is constructed and arranged to maintain adsorbent material in suspension with mixed liquor. The membrane operating system is located downstream of the biological reactor and is constructed and arranged to receive treated mixed liquor from the biological reactor and discharge a membrane permeate. In addition, a wastewater treatment system is provided comprising a first biological reaction zone, a second biological reaction zone and a membrane operating system. The first biological reaction zone is constructed and arranged to receive and treat the wastewater. The second biological reaction zone includes a separation subsystem and is constructed and arranged to receive effluent from the first biological reaction zone. A suspension system for adsorbent material is provided in the second biological reaction zone. The membrane operating system is located downstream of the second biological reaction zone and is constructed and arranged to receive treated wastewater from the second biological reaction zone and discharge a membrane permeate. | 01-27-2011 |
20110079560 | CATALYTIC WET OXIDATION SYSTEMS AND METHODS - A system and method for the treating at least one undesirable constituent in an aqueous mixture utilizing a particulate solids catalyst. The aqueous mixture and the particulate solids catalyst form a slurry which is wet oxidized. | 04-07-2011 |
20110163049 | Water Treatment Apparatus and System - The present invention relates generally to a system and method for treating wastewater in a filter media apparatus having a draft tube system. The filter media may be walnut shell media. | 07-07-2011 |
20110174746 | Water Treatment Methods - The present invention relates generally to a system and method for treating wastewater in a filter media apparatus having a draft tube system. The filter media may be walnut shell media. | 07-21-2011 |
20110210079 | CATALYTIC WET OXIDATION SYSTEMS AND METHODS - A system and method for the treatment of process streams. A catalyst mediates a wet oxidation process at elevated temperatures and pressures for treating at least one undesirable constituent in an aqueous mixture. A catalyst may be selected for its solubility at a detected pH level of the aqueous mixture. Alternatively, a pH level of the aqueous mixture may be adjusted to solubilize a selected catalyst and/or maintain the selected catalyst in a soluble form. A controller in communication with a pH sensor may be configured to generate a control signal to adjust the pH level of the aqueous mixture in response to the pH sensor registering a pH level outside a predetermined pH solubility range for a selected catalyst. | 09-01-2011 |
20120097608 | SUSPENDED MEDIA MEMBRANE BIOLOGICAL REACTOR SYSTEM AND PROCESS INCLUDING SUSPENSION SYSTEM - A wastewater treatment system is provided comprising a biological reactor having a separation subsystem, a suspension system and a membrane operating system. The separation subsystem is constructed and arranged to maintain adsorbent material in the biological reactor with a mixed liquor. The suspension system is positioned in the biological reactor and is constructed and arranged to maintain adsorbent material in suspension with mixed liquor. The membrane operating system is located downstream of the biological reactor and is constructed and arranged to receive treated mixed liquor from the biological reactor and discharge a membrane permeate. | 04-26-2012 |
20120223020 | COMPOSITE MEDIA FOR WATER TREATMENT PROCESSES AND METHODS OF USING SAME - Systems and methods for treating a stream comprising a hydrocarbon liquid and an aqueous-based liquid are provided. The systems and methods may utilize a media composite comprising a mixture of a cellulose-based material and a polymer. In certain systems and methods, the media composite is capable of being backwashed. The stream comprising the hydrocarbon liquid and aqueous-based liquid may be separated by contacting the stream with the media composite. In certain system and methods, the stream comprising the hydrocarbon liquid and aqueous-based liquid may be coalesced by contacting the stream with the media composite. | 09-06-2012 |
20120279920 | SUSPENDED MEDIA MEMBRANE BIOLOGICAL REACTOR SYSTEM AND PROCESS INCLUDING MULTIPLE BIOLOGICAL REACTOR ZONES - A wastewater treatment system is provided comprising a first biological reaction zone, a second biological reaction zone and a membrane operating system. The first biological reaction zone is constructed and arranged to receive and treat the wastewater. The second biological reaction zone includes a separation subsystem and is constructed and arranged to receive effluent from the first biological reaction zone. A suspension system for adsorbent material is provided in the second biological reaction zone. The membrane operating system is located downstream of the second biological reaction zone and is constructed and arranged to receive treated wastewater from the second biological reaction zone and discharge a membrane permeate. | 11-08-2012 |
20130008858 | Systems and Methods for Process Stream Treatment - Systems and methods for process stream treatment. The treatment system may generally include an oxidation unit coupled to a downstream demineralization unit. The oxidation unit may oxidize organic and reduced sulfur contaminants in the process stream to facilitate downstream treatment. The demineralization unit may convert a product of the oxidation unit to generate a mineral stream. In some examples, the process stream may be a spent caustic stream from an industrial operation, such as an ethylene production facility or a petroleum refinery. A fresh caustic stream, such as a sodium hydroxide stream, may be isolated in the demineralization step and returned to the industrial operation for use. | 01-10-2013 |
20130206705 | pH CONTROL TO ENABLE HOMOGENEOUS CATALYTIC WET AIR OXIDATION - A system and method for the treatment of process streams is provided. A catalyst mediates a wet oxidation process at elevated temperatures and pressures for treating at least one undesirable constituent in an aqueous mixture. A catalyst may be selected for its solubility at a detected pH level of the aqueous mixture. Alternatively, a pH level of the aqueous mixture may be adjusted to solubilize a selected catalyst and/or maintain the selected catalyst in a soluble form. A controller in communication with a pH sensor may be configured to generate a control signal to adjust the pH level of the aqueous mixture in response to the pH sensor registering a pH level outside a predetermined pH solubility range for a selected catalyst. | 08-15-2013 |
20130228528 | WET AIR OXIDATION PROCESS USING RECYCLED COPPER CATALYST - A system and method for the treatment of process streams. A catalyst mediates a wet oxidation process at elevated temperatures and pressures for treating at least one undesirable constituent in an aqueous mixture. The aqueous mixture may be contacted with a catalyst and an oxidizing agent at an elevated temperature and a superatmospheric pressure. At least a portion of the catalyst may be precipitated by a pH adjustment and recycled back to contact the aqueous mixture | 09-05-2013 |