1
Dennis A Burke: Nitrogen recovery system and method. Western Environmental Engineering Company, Christensen O Connor Johnson Kindness PLLC, March 15, 2005: US06866779 (25 worldwide citation)

A process for the recovery of nitrogen from anaerobically digested liquid waste and for the collection of the nitrogen as nitrate compounds that can be used to produce fertilizer and compost, includes stripping ammonia from anaerobically digested liquid waste, and converting the ammonia into nitrate ...


2
Dennis A Burke: Pasteurization process. Western Environmental Engineering Company, Christensen O Connor Johnson & Kindness PLLC, September 5, 2000: US06113789 (16 worldwide citation)

An anaerobic process for digesting organic waste solids to produce residual solids having low levels of pathogens so as to meet regulatory Class A requirements involves a pasteurization step to reduce pathogen levels and digestion of the pasteurized material to reduce the solids volume.


3
Dennis A Burke: Anaerobic treatment process with removal of inorganic material. Western Environmental Engineering Company, Christensen O Connor Johnson & Kindness PLLC, September 5, 2000: US06113786 (14 worldwide citation)

Removal of undissolved inorganic materials from an anaerobic treatment process that employs recycle or retention of anaerobic bacteria increases the efficiency of the anaerobic treatment process by removing the undissolved inorganic materials without removing substantial amounts of partially or whol ...


4
Dennis A Burke: Anaerobic treatment process with removal of nonbiodegradable organic material. Western Environmental Engineering Company, Christensen O&apos Connor Johnson Kindness PLLC, October 30, 2001: US06309547 (11 worldwide citation)

Removal of non-biodegradable organic material from an anaerobic treatment process that employs recycle or retention of anaerobic bacteria increases the efficiency of the anaerobic treatment process by removing the non-biodegradable organic material without removing substantial amounts of partially o ...


5
Dennis A Burke: Pasteurizing sludge to exceptional quality. Western Environmental Engineering Company, Christensen O&apos Connor Johnson Kindness PLLC, December 31, 2002: US06500340 (11 worldwide citation)

An anaerobic process in accordance with the present invention includes the step of digesting an organic substrate in a first anaerobic reactor to provide reactor contents comprising solids and liquid products of digestion. The process also includes a step of removing a portion of the reactor content ...


6
Dennis A Burke: Solids accumulating flotation separator. Western Environmental Engineering Company, Christensen O Connor Johnson Kindness PLLC, May 17, 2005: US06893572 (8 worldwide citation)

The invention is directed to a method for flotation separation. The method has the steps of feeding an influent stream containing liquids and solids to a vessel, while removing clarified liquid at the same time as the feeding process. The method employs a step for emptying the solids from the vessel ...


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Burke Dennis A: Pateurizing sludge to exceptional quality. Western Environmental Engineering Company, CRUZ Laura A, January 25, 2001: WO/2001/005714

An anaerobic process in accordance with the present invention includes the step of digesting an organic substrate in a first anaerobic reactor 8 to provide reactor contents comprising solids and liquid products of digestion. The process also includes a step of removing a portion of the reactor conte ...