Respirometry Applications available in Georgia
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Analytical Instruments for Wastewater Treatment
Respirometer based on gasometric method for wastewater analysis. In any biological wastewater treatment system, there is a need to define, assess and understand the plant’s performance with regard to the removal of certain contaminants and the response of bacterial activity to inhibitory compounds of interest. The execution of batch activity tests can be useful to study the biodegradability of a given wastewater stream, determine the stoichiometric and kinetic parameters involved in the conversion of a ...
By BPC Instruments AB based in Lund, SWEDEN.
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Respirometry solutions for industrial waste treatability industry
Test Setup: 40 and 60 mL of wastewater were added to individual respirometer flasks each containing nutrient/mineral/buffer medium to form two different dilutions. TCMP was added to inhibit nitrification. 25 mL of seed from a laboratory scale reactor was added to each test reactor. Oxygen uptake was monitored using a CHALLENGE AER-200 respirometer for five days. A second dose of 40 and 60 mL of leachate sample was then added to each reactor and oxygen uptake was measured for another 5 ...
By Challenge Technology based in Springdale, ARKANSAS (USA).
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Respirometry solutions for toxicity testing sector
Waste Type: Complex alcohols. Objective: Certain constituents of the test waste were know to be biodegradable but were suspected of being toxic to aerobic biological processes when present in high concentrations. The objective was then to determine how much waste could be added to an activated sludge process before toxic impacts would be ...
By Challenge Technology based in Springdale, ARKANSAS (USA).
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Respirometry solutions for monitoring treatment plant performance sector
Waste Type: Activated sludge process ...
By Challenge Technology based in Springdale, ARKANSAS (USA).
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Oxygen monitoring from aerobic and anaerobic for biodegradation tests
Biodegradation tests involve testing samples in response to various parameters: dilution, nutrient addition, pH, temperature, and others. The pattern of oxygen uptake in aerobic tests; nitrogen gas production in anoxic denitrification tests; methane production in methanogenic tests; hydrogen production during glycolysis; and carbon dioxide production during fermentation reactions gives a measure of the rate and extent of biodegradation of the organic constituents of the test ...
By Respirometer Systems and Applications, LLC (RSA) based in Fayetteville, ARKANSAS (USA).
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Oxygen monitoring from aerobic and anaerobic for biomass activity tests
Pulse-Flow respirometers can be used to assess biomass activity for aerobic and anaerobic reactions. In aerobic tests, cultures are combined with nutrients, trace minerals, and an organic substrate – such as acetic acid or ethanol. The maximum oxygen uptake rate reflects the amount of active biomass in the test ...
By Respirometer Systems and Applications, LLC (RSA) based in Fayetteville, ARKANSAS (USA).
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Oxygen monitoring from aerobic and anaerobic for toxicity test
Toxicity of pure chemicals is assessed using respirometers by adding increasing concentrations to an active culture. The concentration at which oxygen uptake or gas production begins to decrease is known as the “threshold toxicant ...
By Respirometer Systems and Applications, LLC (RSA) based in Fayetteville, ARKANSAS (USA).
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Respirometry system for anaerobic toxicity testing
This example shows the results of dosing an anaerobic culture with three concentrations of an industrial cleaning agent followed by respirometric measurement of methane production. The threshold toxic concentration was less than 80 mg/L of product and 600 mg/L produced a 50% decrease in methane production ...
By Respirometer Systems and Applications, LLC (RSA) based in Fayetteville, ARKANSAS (USA).
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Respirometry solutions for monitoring the activity of mixed-liquor solids sector
Sample Type: Mixed liquor solids from an activated sludge process MVLSS = 1320 ...
By Challenge Technology based in Springdale, ARKANSAS (USA).
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Respirometry solutions for composting sector
Respirometry solutions for composting ...
By Challenge Technology based in Springdale, ARKANSAS (USA).
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Application of respirometry system for denitrification testing
Anoxic denitrification requires the presence of an organic substrate to serve as an electron donor. This case study shows how respirometry was used to determine the effect of C/N ratio on denitrification rates. Such testing can be used to determine optimum internal recycle rates or supplemental carbon addition to biological denitrification ...
By Respirometer Systems and Applications, LLC (RSA) based in Fayetteville, ARKANSAS (USA).
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Respirometry System for Aerobic Toxicity Testing
This example shows the results of respirometer tests in which three concentrations of cyanide were added to a aerobic test culture that received phenol as an organic substrate. The threshold toxic concentration of cyanide was 1 ...
By Respirometer Systems and Applications, LLC (RSA) based in Fayetteville, ARKANSAS (USA).
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Respirometry solutions for modeling of methane and hydrogen production sector
Waste Type: Synthetic (Ethanol). Objective: To model the methane produced from acetate and from hydrogen in cultures receiving ethanol as an input substrate. The objective was to verify the accuracy of models developed on the basis of substrate ...
By Challenge Technology based in Springdale, ARKANSAS (USA).
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Respirometry solutions for anaerobic biomass activity tests sector
The methane production activity of anaerobic sludges is related to the history of the sludge, the biomass yield from the wastewater the sludge has been treating, the fraction of methanogens, and the presence of toxic ...
By Challenge Technology based in Springdale, ARKANSAS (USA).
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Respirometry solutions for pharmaceutical wastewater industry
A pharmaceutical company was interested in knowing whether a specific component, MCB, inhibited the biodegradation of other wastewater constituents. A series of respirometer tests was set up using identical mixtures of wastewater and return activated sludge (RAS) plus varying amounts of MCB. The OUR fingerprint of this wastewater includes a first peak of about 500 mg/L-hr within the first hour of contact that represents the oxidation of highly-biodegradable organic constituents. A second group of readily ...
By Challenge Technology based in Springdale, ARKANSAS (USA).
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Respirometry solutions for pulp mill wastewater industry
A pulp mill was interested in evaluating the impact of increasing organic loading rates on the performance of their activated sludge ...
By Challenge Technology based in Springdale, ARKANSAS (USA).
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Respirometry system for determination of biodegradation kenetics
Intrinsic kinetic tests involve adding relatively high concentrations of organic substrate to small concentrations of acclimated microorganisms so that the COD/VSS ratio typically is greater than 10. Kinetic parameters are then determined by non-linear modeling using well-known relationships between biological growth and oxygen ...
By Respirometer Systems and Applications, LLC (RSA) based in Fayetteville, ARKANSAS (USA).
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Respirometry system for anaerobic biochemical methane production
Anaerobic biodegradation tests – often referred to as Biochemical Methane Production (BMP) tests – involve addition of known amounts of a chemical or wastewater to anaerobic cultures. The quantity of methane production – relative to that from a control – indicates the biodegradation potential. This case study shows methane production for a Control reactor and three test reactors that were operated at 20-, 30- and 45-day retention times and received three doses of industrial wastewater. The ...
By Respirometer Systems and Applications, LLC (RSA) based in Fayetteville, ARKANSAS (USA).
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Respirometry solutions for testing the stability of compost sector
METHOD: A full-scale compost plant was faced with the need to determine the stability of the compost in the active bays during the compost operation. Samples were collected at 24-ft intervals (2 days of operation) through the length of one bay of the in-vessel compost system and placed into sealed glass reactors. Air was recirculated through the compost material using a peristaltic pump. A caustic scrubber was placed in the recirculation line to remove carbon dioxide (Figure 1). The reaction vessels were connected ...
By Challenge Technology based in Springdale, ARKANSAS (USA).
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Respirometry solutions for culture activity tests sector
Waste Type:Synthetic (Acetic Acid). Objective: To monitor the gas produced by steady-state cultures receiving acetate as the input substrate. Another objective was to verify the consistency of gas production over a period of time as a means of verifying culture stability and test ...
By Challenge Technology based in Springdale, ARKANSAS (USA).
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