Protocol for Source Toxicity Evaluation

1992 ◽  
Vol 25 (3) ◽  
pp. 45-54 ◽  
Author(s):  
W. W. Eckenfelder ◽  
P. W. Lankford
Keyword(s):  
United States ◽  
Biological Treatment ◽  
Aquatic Toxicity ◽  
The United States ◽  
Design Parameters ◽  
Priority Pollutants ◽  
Toxicity Evaluation ◽  
Industrial Wastewaters ◽  
Physical Chemical ◽  
Treatment Design

Recent legislation in the United States is placing emphasis on the removal of priority pollutants and aquatic toxicity from industrial wastewaters. A protocol has been developed to select candidate technologies for specific effluent objectives. Wastewaters which are non-biodegradable and toxic are designated for source treatment. Design parameters for biological treatment are developed using a modified FBR test. The applicability of alternative physical-chemical technologies are discussed.

Strategies for Toxicity Reduction in Industrial Wastewaters

1991 ◽  
Vol 24 (7) ◽  
pp. 185-193 ◽  
Author(s):  
W. Wesley Eckenfelder
Keyword(s):  
United States ◽  
Biological Treatment ◽  
Aquatic Toxicity ◽  
The United States ◽  
Design Parameters ◽  
Priority Pollutants ◽  
Industrial Wastewaters ◽  
Physical Chemical ◽  
Toxicity Reduction

Recent legislation in the United States is placing emphasis on the removal of priority pollutants and aquatic toxicity from industrial wastewaters. A protocol has been developed to select candidate technologies for specific effluent objectives. Design parameters for biological treatment are developed using a modified FBR test. The applicability of alternative physical-chemical technologies are discussed.

scholarly journals Hydrogeochemical Studies of Groundwater In Industrial And Agricultural Area Of Gokul Shirgaon MIDC Region, Kolhapur, Maharashtra, India

2021 ◽  
Vol 9 (9) ◽  
pp. 228-236
Author(s):  
Tejashri V. Patil
Keyword(s):  
United States ◽  
Water Quality ◽  
Drinking Water ◽  
Natural Resources ◽  
Quality Index ◽  
The United States ◽  
Biological Parameters ◽  
Total Water ◽  
Physical Chemical

Abstract: Groundwater is one of the earth’s most widely distributed and most important natural resources. Groundwater exists, wherever water penetrates beneath the surface. The rocks beneath the surface are permeable enough to transmit water, and at places, the rate of infiltration is so sufficient that the rocks are saturated to an appreciable thickness. This water may be fresh or brackish in quality. As the fresh water constitutes very little quantity of the total water available, we must think as to how best we can exploit it, and utilize it. With the growth of population, today in many of the places water has become a critical source. In many places it is dwindling both in quality and quantity, creating problems for the communities involved. Water Quality Index indicates the quality of drinking water by assessing physical, chemical and biological parameters of water. India had the most studies, with 177 articles, followed by China, Brazil and the United States. This four countries together published 57% of studies on WQI. Groundwater quality implies the level of concentration of different constituents of water which is ultimately described if it is suitable or not for drinking or other purpose such as irrigation. There are mainly three types of constituents or parameters for describing quality of groundwater as physiological, chemical and biological parameters. These parameters are described below: EC ,TDS, K, Na, Ca ,Mg ,TH, Co3, HCO3, Cl, SO4 ,and also we determine some trace element such as Copper (Cu) ,Lead (Pb), Manganese (Mn) ,Nickel (Ni) ,Iron (Fe), Zinc (Zn). Keywords: Gokul Shirgaon , Hydrogeochemical , GroundWater

Evaluation of industrial biological treatment design on the basis of process modelling

1998 ◽  
Vol 38 (4-5) ◽  
pp. 1-8 ◽  
Author(s):  
Derin Orhon
Keyword(s):  
Biological Treatment ◽  
Rational Design ◽  
Process Modelling ◽  
Design Parameters ◽  
Specific Reference ◽  
Excess Sludge ◽  
Functional Relationships ◽  
Solids Concentration ◽  
Treatment Design ◽  
Activated Sludge Systems

This paper reviews the basic steps, often overlooked, in the design of activated sludge systems on the basis of recent concepts introduced for process modelling. Firstly, it evaluates the necessary data base for a rational design approach, emphasizing the required wastewater characterization. Secondly, it underlines the significance of functional relationships between reactor biomass, volume and the sludge age recommended as the major design parameters. Then, it defines excess sludge production with specific reference to VSS/SS ratio and to the importance of the influent fixed solids concentration. Finally, it deals in detail with the oxygen requirement of the system, outlining different modelling approaches to be used for such an evaluation and emphasizing the pitfalls to be encountered when using BOD5 parameter for this calculation.

Coal Firing and Industrial Boiler Design—The Modern Approach

1976 ◽  
Vol 98 (3) ◽  
pp. 297-304
Author(s):  
V. L. Smith
Keyword(s):  
United States ◽  
The United States ◽  
Design Parameters ◽  
Steam Generation ◽  
Modern Approach ◽  
Industrial Boiler ◽  
Boiler Design

Coal is becoming increasingly more favorable as a fuel due to petroleum becoming too valuable to be used as one. The technology of firing coal has advanced tremendously as a result of new coal source discoveries and higher pressure and temperature steam generation. This paper defines the modern classifications of the different coals found in the United States and presents the respective design parameters for each classification. The varying design parameters in conjunction with the coal classifications are then related to modern industrial boiler design.

Selected Physical, Chemical, and Biological Data Used to Study Urbanizing Streams in Nine Metropolitan Areas of the United States, 1999-2004

Data Series ◽  
10.3133/ds423 ◽  
2009 ◽  
Author(s):  
Elise M.P. Giddings ◽  
Amanda H. Bell ◽  
Karen M. Beaulieu ◽  
Thomas F. Cuffney ◽  
James F. Coles ◽  
...  
Keyword(s):  
United States ◽  
Metropolitan Areas ◽  
The United States ◽  
Biological Data ◽  
Physical Chemical

Correlative microscopy in distrubuted (client/server) computing environments: tools for catalyzing the rapid dissemination of information about the cell biology of the human prostate

1995 ◽  
Vol 53 ◽  
pp. 682-683
Author(s):  
A. Hakam ◽  
J.T. Gau ◽  
M.L. Grove ◽  
B.A. Evans ◽  
M. Shuman ◽  
...  
Keyword(s):  
United States ◽  
Cell Biology ◽  
Tissue Bank ◽  
The United States ◽  
Prostate Adenocarcinoma ◽  
Correlative Microscopy ◽  
Client Server ◽  
Critical Elements ◽  
Transplant Organ

Prostate adenocarcinoma is the most common malignant tumor of men in the United States and is the third leading cause of death in men. Despite attempts at early detection, there will be 244,000 new cases and 44,000 deaths from the disease in the United States in 1995. Therapeutic progress against this disease is hindered by an incomplete understanding of prostate epithelial cell biology, the availability of human tissues for in vitro experimentation, slow dissemination of information between prostate cancer research teams and the increasing pressure to “ stretch” research dollars at the same time staff reductions are occurring.To meet these challenges, we have used the correlative microscopy (CM) and client/server (C/S) computing to increase productivity while decreasing costs. Critical elements of our program are as follows:1) Establishing the Western Pennsylvania Genitourinary (GU) Tissue Bank which includes >100 prostates from patients with prostate adenocarcinoma as well as >20 normal prostates from transplant organ donors.

Digital image acquisition, processing, and analysis in a polymer microscopy laboratory

1994 ◽  
Vol 52 ◽  
pp. 454-455
Author(s):  
Vinod K. Berry ◽  
Xiao Zhang
Keyword(s):  
United States ◽  
Image Analysis ◽  
Digital Image ◽  
Image Acquisition ◽  
Image Transmission ◽  
The United States ◽  
Quantitative Image Analysis ◽  
Quantitative Image

In recent years it became apparent that we needed to improve productivity and efficiency in the Microscopy Laboratories in GE Plastics. It was realized that digital image acquisition, archiving, processing, analysis, and transmission over a network would be the best way to achieve this goal. Also, the capabilities of quantitative image analysis, image transmission etc. available with this approach would help us to increase our efficiency. Although the advantages of digital image acquisition, processing, archiving, etc. have been described and are being practiced in many SEM, laboratories, they have not been generally applied in microscopy laboratories (TEM, Optical, SEM and others) and impact on increased productivity has not been yet exploited as well.In order to attain our objective we have acquired a SEMICAPS imaging workstation for each of the GE Plastic sites in the United States. We have integrated the workstation with the microscopes and their peripherals as shown in Figure 1.

Silence of the Land: On the Historical Irrelevance of Territory to Congressional Districting and Political Representation in the United States

2001 ◽  
Vol 15 (01) ◽  
pp. 53-87 ◽  
Author(s):  
Andrew Rehfeld
Keyword(s):  
United States ◽  
House Of Representatives ◽  
Political Representation ◽  
The United States ◽  
Representative Government ◽  
Congressional District ◽  
Congressional Districts ◽  
Communities Of Interest

Every ten years, the United States “constructs” itself politically. On a decennial basis, U.S. Congressional districts are quite literally drawn, physically constructing political representation in the House of Representatives on the basis of where one lives. Why does the United States do it this way? What justifies domicile as the sole criteria of constituency construction? These are the questions raised in this article. Contrary to many contemporary understandings of representation at the founding, I argue that there were no principled reasons for using domicile as the method of organizing for political representation. Even in 1787, the Congressional district was expected to be far too large to map onto existing communities of interest. Instead, territory should be understood as forming a habit of mind for the founders, even while it was necessary to achieve other democratic aims of representative government.

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