Evaluation of the installation of a sewage collection system on water quality in a prairie lake

10.3133/33237 ◽  
1989 ◽  
Keyword(s):  
Water Quality ◽  
Collection System

The effect of organic reactions in a collection system on wastewater treatment plant performance

1995 ◽  
Vol 31 (7) ◽  
pp. 25-31 ◽  
Author(s):  
Bruce Gall ◽  
Imre Takács ◽  
Gilles Patry
Keyword(s):  
Water Quality ◽  
Wastewater Treatment ◽  
Wastewater Treatment Plant ◽  
Numerical Experiments ◽  
Treatment Plant ◽  
Quality Characteristics ◽  
Plant Performance ◽  
Collection System ◽  
Combined Sewer ◽  
Potential Benefits

Biological reactions within the sewer play an important role in establishing the water quality characteristics of combined sewer overflow and of the sewage entering a wastewater treatment plant. A simulation model that shows the effects of reactions in the collection system on wastewater treatment plant performance has been developed. A series of numerical experiments was conducted to illustrate the features of the model, and the potential benefits of the approach. The study also serves to identify areas in which the models need to be improved.

Balancing water quality and flows in combined sewer systems using real-time control

2020 ◽  
Vol 6 (5) ◽  
pp. 1357-1369
Author(s):  
Sara C. Troutman ◽  
Nancy G. Love ◽  
Branko Kerkez
Keyword(s):  
Water Quality ◽  
Control Algorithm ◽  
Treatment Plant ◽  
Source Control ◽  
Collection System ◽  
Real Time Control ◽  
Time Control ◽  
Sewer Systems ◽  
System P ◽  
Combined Sewer

An open-source control algorithm for combined sewers demonstrates how treatment plant benefits can be balanced with operation of the collection system.

A correlation of CL emissions from Penrith sandstone with elemental distributions obtained by simultaneous SEM-CL and EDS analysis

1995 ◽  
Vol 53 ◽  
pp. 392-393
Author(s):  
Paul J. Wright
Keyword(s):  
Optical Microscope ◽  
Electron Gun ◽  
High Electron ◽  
Collection System ◽  
Electron Hole ◽  
Depositional Processes ◽  
Eds Analysis ◽  
Distribution Mapping ◽  
Backscattered Electron ◽  
Electron Imaging

Most industrial and academic geologists are familiar with the beautiful red and orange cathodoluminescence colours produced by carbonate minerals in an optical microscope with a cold cathode electron gun attached. The cement stratigraphies interpreted from colour photographs have been widely used to determine the post depositional processes which have modified sedimentary rock textures.However to study quartzose materials high electron densities and kV's are necessary to stimulate sufficient emission. A scanning electron microscope with an optical collection system and monochromator provides an adequate tool and gives the advantage of providing secondary and backscattered electron imaging as well as elemental analysis and distribution mapping via standard EDS/WDS facilities.It has been known that the incorporation of many elements modify the characteristics of the CL emissions from geological materials. They do this by taking up positions between the valence and conduction band thus providing sites to assist in the recombination of electron hole pairs.

Setting up a billing and collection system

2008 ◽  
Author(s):  
Susan Frager
Keyword(s):  
Collection System

A Numerically Coded File of Operative Procedures Derived from a Free Text Data Collection System : A Measure of the Accuracy

1976 ◽  
Vol 15 (01) ◽  
pp. 21-28 ◽  
Author(s):  
Carmen A. Scudiero ◽  
Ruth L. Wong
Keyword(s):  
Data Collection ◽  
Pap Smear ◽  
Operative Procedures ◽  
Free Text ◽  
Collection System ◽  
Process Data ◽  
Text Data ◽  
Data Collection System ◽  
History Of ◽  
Correlation System

A free text data collection system has been developed at the University of Illinois utilizing single word, syntax free dictionary lookup to process data for retrieval. The source document for the system is the Surgical Pathology Request and Report form. To date 12,653 documents have been entered into the system.The free text data was used to create an IRS (Information Retrieval System) database. A program to interrogate this database has been developed to numerically coded operative procedures. A total of 16,519 procedures records were generated. One and nine tenths percent of the procedures could not be fitted into any procedures category; 6.1% could not be specifically coded, while 92% were coded into specific categories. A system of PL/1 programs has been developed to facilitate manual editing of these records, which can be performed in a reasonable length of time (1 week). This manual check reveals that these 92% were coded with precision = 0.931 and recall = 0.924. Correction of the readily correctable errors could improve these figures to precision = 0.977 and recall = 0.987. Syntax errors were relatively unimportant in the overall coding process, but did introduce significant error in some categories, such as when right-left-bilateral distinction was attempted.The coded file that has been constructed will be used as an input file to a gynecological disease/PAP smear correlation system. The outputs of this system will include retrospective information on the natural history of selected diseases and a patient log providing information to the clinician on patient follow-up.Thus a free text data collection system can be utilized to produce numerically coded files of reasonable accuracy. Further, these files can be used as a source of useful information both for the clinician and for the medical researcher.

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