Biochem Technology, Inc.

Jaw Fang Lee

Sergey K Maneshin

Xin Yang

Marcus E Kolb

Terrance J Mah

William B Armiger

James J Goodley

William D McGurney

Mark J Bubel, Sr

Richard J Krause

Craig W Breckenridge

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.

Systems for treating wastewater in a series of filter-containing tanks

The present invention relates to apparatus and a method for measuring ammonia in biochemical processes, and more particularly to apparatus for real time measuring the amount of ammonia in a liquid with or without suspended solids.

Method for measuring ammonia in biochemical processes

The invention relates to apparatus and a method for measuring NO,in biochemical processes, and to apparatus and methods for real time measuring the nitrification and/or denitrification rate of a liquid with or without suspended solids.

Method of measuring a nitrification rate for liquids

Apparatus for measuring ammonia in biochemical processes

A method of determining denitrification time for at least a portion of wastewater in a wastewater treatment process including isolating a wastewater sample from the wastewater in the wastewater treatment process; detecting changes in fluorescence emitted by NADH from microorganisms contained within the sample; detecting changes in pH of the sample; analyzing the changes in NADH and pH and establishing that the sample is denitrified at a point where NADH shifts from a steady state or a decreasing state to an increasing state and, substantially simultaneously, the pH shifts from a steady state or an increasing state to a decreasing state; and calculating elapsed time between when the sample was taken and when the sample was denitrified to determine the denitrification time for the portion of the wastewater treatment process.

Enhanced denitrification process by monitoring and controlling

A method for measuring NO.sub.x in biochemical processes which includes a) isolating a liquid sample; b) adjusting the pH or ionic strength of the sample; c) recording mV values present in the sample after predetermined time periods; d) determining NO.sub.x concentrations in the sample at each of the predetermined time periods from the mV values; e) determining the difference in NO.sub.x in the sample from the NO.sub.x concentrations at each of the predetermined time periods; and f) determining the NO.sub.x concentration of the liquid sample from the difference in NO.sub.x and the predetermined time periods.

Method for measuring NO.sub.x in biochemical processes

A method of monitoring a microbiological process in a fluid supply involving isolation of a fluid sample from a fluid supply, measuring the pH of the fluid sample at selected time intervals, then calculating changes in pH, if any, to determine a pH variation rate for the sample. The dissolved oxygen in the sample is also measured at selected time intervals substantially synchronously with the pH measurements, and changes in dissolved oxygen, if any, are calculated to determine a biological oxygen consumption rate for the sample.

Method for monitoring and controlling biological activity in fluids

A method of monitoring a microbiological process in a fluid supply involving isolation of a fluid sample from a fluid supply, measuring the pH of the fluid sample at selected time intervals, then analyzing changes in pH, if any, to determine a pH production rate for the sample. Changes in pH production rate are then analyzed to determine when the pH production rate changes from a negative value to zero and/or to zero for the second time as an indicator of nitrification time.

Apparatus which monitors and controls biological activity of wastewater under anaerobic, anoxic and aerobic conditions by measuring changes in dissolved oxygen content of the wastewater and/or cellular NADH. A wastewater treatment system is controlled in accordance with the results generated by the monitoring system.

Apparatus and method for monitoring and controlling biological activity

Apparatus and method monitors and controls biological activity of mixed liquor under anaerobic, anoxic and aerobic conditions by measuring the change of intracellular AND(P)H of the microorganisms. A wastewater treatment system is controlled in accordance with the results generated by the monitoring system.

Method and apparatus for monitoring biological activity in wastewater

An optical probe mounting device for the insertion end of a fluorescence measuring optical probe which facilitates mounting on a biological reactor vessel window fitting. The device consists of a rigid hollow cylinder sized to closely receive the probe and to closely slide within the interior of the fitting. A quartz window seals the insertion end of the cylinder to allow passage of ultraviolet light without attenuation. A flange is sealingly affixed to the cylinder which permits the cylinder to extend a predetermined distance into the vessel. An O-ring extends around the cylinder or a face seal is used on the rear flange of the well, thereby providing a seal upon insertion of the device into the fitting.

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Berwyn, PA, United States of America

Jaw Fang Lee