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Travis B.,Musso and Bellemin Inc | Tracey D.,LuminUltra Technologies Ltd.
Membrane Technology | Year: 2015

This case study reveals how an enhanced biological monitoring strategy was deployed to overcome serious operational challenges at a membrane-based purification plant. The plant was constructed in response to issues associated with disinfection by-product formation due to direct chlorination of groundwater, but ended up suffering major problems when biological fouling within the system brought it to a standstill.


Tracey D.,LuminUltra Technologies Ltd. | Travis B.,Compliance
American Water Works Association (AWWA) 2013 Distribution Systems Symposium/Emergency Preparedness and Security Conference and Exposition | Year: 2013

• 2nd Generation ATP monitoring provides a significantly more complete picture of total bioburden than culture-based techniques. • Through simple and portable test protocols and no incubation requirements, tests can be done in the field thus enabling on-the-spot identification and mitigation of problems. • Since all species of microbe contain ATP (including nitrifying bacteria), it serves as an excellent condition monitoring tool to reveal changes from baseline condition, regardless of the species involved. © 2013 American Water Works Association AWWA DSS/EPS Conference Proceedings All Rights Reserved.


Travis B.,Thornton | Tracey D.,LuminUltra Technologies Ltd.
AMTA/AWWA Membrane Technology Conference and Exposition 2013 | Year: 2013

The groundwater that St. John the Baptist Parish in southern Louisiana supplies to residents has been high in organic material and color. In the past, organics were oxidized by chlorination but due to disinfection by-product (DBP) formation, so a membrane plant was built to provide alternative treatment. However, the root cause of the disinfection by-products was not addressed, that being removal of organic precursors. A more thorough water quality investigation including a thorough microbiological survey was needed to come to a more sustainable solution. Options available for rapid and accurate microbiological water testing are very limited. Heterotrophic Plate Counts (HPCs) and other culture-based tests require long incubation times and only measure a fraction of the population since they neglect to detect several classes of microorganism. As such, they are not always effective as a risk management tool. To provide better results in a much shorter time, many utilities are turning to "2nd generation" ATP testing. ATP (Adenosine Triphosphate) is the primary energy transfer molecule for all living cells on Earth and therefore its measurement is a directly tied to the microbial population. As such, it is the ideal basis for risk assessment. In the situation at hand, ATP monitoring quickly identified elevated microbial content not only in the raw water, permeate, and reject, but also within the membranes themselves. This enabled personnel to assess the effects of decreased pre-chlorination, diagnose the fouling issue as a biological problem, and optimize of the membrane cleaning process - All within minutes of sample collection. © 2013 American Water Works Association.


Keasler V.,Nalco Company | Bennett B.,Nalco Company | Keller C.,Nalco Company | Whalen P.,LuminUltra Technologies Ltd. | And 2 more authors.
International Biodeterioration and Biodegradation | Year: 2013

Evaluation of microbial populations in oilfield systems is critical to understand the risk of microbiologically influenced corrosion, reservoir and surface souring (hydrogen sulfide production), and biofouling. Although traditional culture based methods have dominated oilfield microbial monitoring for years, use of molecular tools is becoming more common for both field and laboratory evaluations. The implementation of these additional tools is in response to some of the disadvantages of culture-based methods such as long incubation times and underestimation of actual microbial populations. The current work provides a direct comparison of culture-based methods (serial dilution for sulfate reducing, acid producing, and general heterotrophic bacteria) with molecular methods including adenosine triphosphate (ATP) and adenosine monophosphate (AMP) quantification and quantitative polymerase chain reaction (qPCR). The results demonstrate that these technologies provide nearly identical results in untreated samples with known culturable organisms, but show some differences when used in the context of a planktonic kill study. The pros and cons of each technology were addressed with respect to their use in field monitoring, laboratory monitoring, and microbial kill studies. The authors found that none of the technologies described in this work provide an all-inclusive answer, but together they provide significant insight into the microbial population in an oilfield system. In short, the authors demonstrate that it is advantageous for oilfield stakeholders to expand their microbial monitoring toolkit with these new technologies to ensure sustainable, cost-effective operation. © 2012 Elsevier Ltd.


Tracey D.,LuminUltra Technologies Ltd.
Journal - American Water Works Association | Year: 2014

Limitations in flushing optimization mostly lie with the tools that have historically been available to field technicians. Turbidity measurements are routinely used to guide flushing from a microbiological perspective. Disinfectant residual is often used to indicate an end-point for flushing, but this method is not ideal on its own. Flushing based on pre-determined time periods tends to over-compensate for this lack of tools, usually at the expense of a great deal of time and water. The missing link is the inability to quantify microbiological contents in water while in the field. Culture-based tools like heterotrophic plate counts that are typically used for microbiological monitoring in flushing operations are impractical because of the incubation times required to return results and must be conducted in a controlled laboratory environment.


Brault J.-M.,Ecole Polytechnique de Montréal | Whalen P.,LuminUltra Technologies Ltd. | Stuart P.,Ecole Polytechnique de Montréal
Environmental Technology | Year: 2011

A research project was undertaken at an integrated thermomechanical pulp and paper mill in Canada to evaluate the use of adenosine triphosphate (ATP) monitoring methods in order to identify the potential for operational problems related to microbiological aspects of activated sludge. The specific filamentous bulking ATP (fbATP) ratio is an emerging measurement technique that measures the proportion of flocs that have bulking potential by filtering a sample through a 250 ì m mesh and measuring the ATP in the retentate. For the host mill in this study, the specific fbATP measurement provides early warning signs of bulking, at 1.0 to 1.5 times the sludge age, before poor settling occurs. A possible bulking scenario was identified in which the initiator was the overflow of an upstream tank containing high BOD whitewater, resulting in spikes of organic acids to the treatment and promoting the proliferation of certain types of filamentous bacteria. A storage response by filamentous bacteria to these high readily biodegradable substrate conditions was monitored with fbATP. By predicting the onset of bulking conditions, this technique can potentially assist operators to make corrective actions proactively. © 2011 Taylor & Francis.


Passman F.J.,Biodeterioration Control Associates, inc. | Whalen P.A.,LuminUltra Technologies Ltd.
Society of Tribologists and Lubrication Engineers Annual Meeting and Exhibition 2012 | Year: 2012

An integral component of the ASTM process for new standard test methods is to perform an inter-laboratory study (ILS). In January 2011, ten companies participated in an ILS for ASTM E 2694 Method for Measurement of Adenosine Triphosphate in Water-Miscible Metalworking Fluids. The ILS included samples of emulsifiable oil, semi-synthetic and synthetic metalworking fluid formulations with ATP bioburdens ranging from 0.3 Log10 pg ATP mL-1 to >5.0 Log 10 pg ATP mL-1. This presentation discusses the ILS test plan design and results.


Trademark
LuminUltra Technologies Ltd. | Date: 2012-01-11

Chemical test kits for determining biological, chemical, and physical constituents and attributes of fluid and solid samples, for field, laboratory, and research use. Instrumentation, namely, photometers for determination of biological, chemical, and physical constituents in fluid and solid samples; computer software that facilitates the assemblage of data from municipal and industrial process databases, spreadsheets, and manual input sources, and subsequent analysis of said data, biological, chemical and physical contamination analysis, and evaluation of data related to biological, chemical, and phsyical contamination analysis.


Trademark
LuminUltra Technologies Ltd. | Date: 2012-11-30

chemical test kits for determining biological, chemical and physical constituents and attributes of samples, for field, laboratory and research use. Instrumentation, namely, photometers for determination of biological, chemical and physical constituents in fluid and solid samples. Biological, chemical and physical contamination analysis and evaluation of data related to biological, chemical and physical analysis.


Trademark
LuminUltra Technologies Ltd. | Date: 2016-08-15

Chemical test kits for determining biological, chemical or physical constituents or attributes of drinking water and wastewater, from organic or particulate samples, for field or laboratory use. Biological, chemical or physical contamination analysis and evaluation of data related to the biological, chemical or physical contamination constituents or attributes of drinking water, wastewater, oil and gas-related water, and industrial water, from water samples, organic samples, solids samples, and mixtures of these samples.

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