Results 151 to 160 of about 229,751 (195)

Jar‐Test Evaluation of Polymers

Journal AWWA, 1976
A progress report on the improving effectiveness of polymers as primary coagulants and coagulant aids and as Sludge conditioners is presented here. The study, initiated by the AWWA Research Foundation, was conducted by widely scattered volunteer laboratories with polymers that were available in 1971–72.
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Improved Jar Test Procedure

Journal AWWA, 1957
THE jar test, in spite of its known shortcomings, has proved valuable in water plant operation, particularly in the hands of an experienced individual. When the jar test is required in coagulation research, however, need for an objective and quantitative measure of the results of the test soon becomes apparent.
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The Scar-in-a-Jar: In Vitro Fibrosis Model for Anti-Fibrotic Drug Testing

2021
Excessive deposition of type I collagen follows in the wake of chronic inflammation processes in dysregulated tissue healing and causes fibrosis that can ultimately lead to organ failure. While the development of antifibrotic drugs is targeting various upstream events in collagen matrix formation (synthesis, secretion, deposition, stabilization ...
Stebler, Simon, Raghunath, Michael
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Jar Testing Simultaneous Dosing Device

Opflow, 1997
When doing side‐by‐side performance testing of different cationic polymers, the results can be affected by the order in which the polymer is added. This article discusses the construction of a device to ensure that coagulants are added in the desired order. It lists the equipment and cost information as well as a detailed set of assembly instructions.
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Sedimentation Success From Modified Jar Tests

Journal AWWA, 1984
Delivery of clear water from settling basins to filtration systems is important for the smooth operation of a treatment plant. But operators work at a disadvantage when they cannot determine what is happening during the sedimentation process. Incomplete settling allows turbid outflows to reach filters, shortening their runs and adding to water quality ...
Gregory D. Reed, David A. Reece
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Application of Jar‐Test Analysis at Phoenix, Ariz.

Journal AWWA, 1972
A Metricized ArticleJar testing and pilot‐plant work can prove valuable precursors in designing floc basins—as the authors of this article pointedly cite. They also are quite incisive in their refutation of some prevailing theories regarding mixing and settling times.
J. David Griffith, Robert G. Williams
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Jar Tests Improve Water Quality

Opflow, 1975
Jar test procedures, significance, and test equipment are discussed. The jar test determines the most effective chemical coagulant or combination of coagulants for treatment of water from a particular raw water source.
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Gas Analysis of Plutonium Materials Tested in a Bell Jar

Transportation, Storage, and Disposal of Radioactive Materials, 2003
Seventy cans containing plutonium bearing materials have been tested for gas generation in bell jars at the Savannah River Site (SRS). Gas samples from five of the tests were taken and analyzed for hydrogen, oxygen, nitrogen, methane, carbon dioxide, carbon monoxide, and nitrous oxide.
Steve J. Hensel, Jonathan R. Kies
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Discussion on Simulation Rotational Speed of Coagulation Jar Test

Advanced Materials Research, 2014
According to the characteristic of mixing and flocculation of water plant, the calculation formula of the simulation rotational speed of agitator was proposed for the coagulation-flocculation jar test of optimum dosage, which was based on the basic principle that the velocity gradient of production is equal to that of experiment.
Chao Chun Tang, Xin Ye, Hui Min Chen, Min Liu   +3 more
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Evaluation of Plant Operating and Jar‐Test Data

Journal AWWA, 1973
Flocculating and settling‐velocity test data can be used to revise plant design. The author describes how results may be plotted so that comparisons between lab and plant tests are more valid.
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