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Xprt Product Applications In Hong Kong
92 applications found
Test Setup: A series of dilutions consisting of 50, 75, 100, 125, 150, and 175 mL of test wastewater were added to respective 500 mL respirometer flasks along with nutrients, minerals, and buffers. TCMP was added to eliminate interference from nitrification. Oxygen uptake was measured over a five-day test period using a CHALLENGE AER-200 ...
ByChallenge Technology based in Springdale, ARKANSAS (USA)
Method: An industry was discharging wastewater to a municipal sewer and was suspected of causing problems with treatment at the plant. Samples of the industrial wastewater were collected and oxygen uptake for four dilutions was measured using a CHALLENGE AER-200 aerobic/anaerobic respirometer system. Biodegradation kinetic coefficients were determined using the method described by Dang, et. al. (Res. J. of Water Poll. Control Fed., p. 1711, 1989). Results of the oxygen uptake measurements and kinetic analyses are ...
ByChallenge Technology based in Springdale, ARKANSAS (USA)
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 ...
ByChallenge Technology based in Springdale, ARKANSAS (USA)
A pulp mill was interested in evaluating the impact of increasing organic loading rates on the performance of their activated sludge ...
ByChallenge Technology based in Springdale, ARKANSAS (USA)
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 ...
ByChallenge Technology based in Springdale, ARKANSAS (USA)
OUR measurements were made for two waste streams from a chemical production plant. The fingerprint for Waste 1 indicated the presence of three major groups of organic constituents. The first group of readily biodegradable organic constituents is oxidized at maximum kinetic rate through about one hour of contact. Oxidation of a second group of constituents causes the OUR to increase through about 3.5 hours of incubation. This increase in OUR is caused by growth of microorganisms during the oxidation reaction. ...
ByChallenge Technology based in Springdale, ARKANSAS (USA)
Man-portable NMR Geophysical Instruments for Soil, Sediment and Core Measurements. Vista Clara’s family of man-portable NMR tools enable direct measurement of volumetric water content and high-resolution pore-scale analysis of soils, sediments and core samples. These tools are all man-portable and designed for use in the ...
ByVista Clara, Inc based in Mukilteo, WASHINGTON (USA)
High-Resolution Downhole Measurement and Characterization of Aquifer Properties. Vista Clara’s advanced Javelin family of borehole NMR magnetic resonance logging tools provide direct, low-cost, high-resolution measurements of hydrogeological properties that users really care about, including: Volumetric water content, pore size distribution, bound and mobile porosity, hydraulic conductivity, ...
ByVista Clara, Inc based in Mukilteo, WASHINGTON (USA)
Directly measure water content and characterize aquifer properties using NMR. Our tools operate non-invasively from the surface or downhole in pilot ...
ByVista Clara, Inc based in Mukilteo, WASHINGTON (USA)
Identify productive zones at high resolution and predict yield in pilot borings to determine optimal screen placement and inform well ...
ByVista Clara, Inc based in Mukilteo, WASHINGTON (USA)
Obtain accurate and high-resolution quantification of water content and hydrogeologic properties for use in groundwater models. ...
ByVista Clara, Inc based in Mukilteo, WASHINGTON (USA)
Determine site suitability, observe seasonal changes, and monitor surface water ...
ByVista Clara, Inc based in Mukilteo, WASHINGTON (USA)