Case study river

Retrieved August 20, 2015, from http //www.westemrenew.co.uk/files/case studies/river dart.pdf. 

The following chapter is a case study of how the three problem areas illustrated (dissolved oxygen depletion, erosion/deposition, and potentially toxic trace elements) may be successfully addressed on a major river system using quantitative, semi-quantitative and qualitative approaches respectively. 

The Willamette River Basin, Oregon serves as an excellent case study of river quality assessment for a number of reasons. First, the Willamette River has been cited internationally as a classic example of how water quality can be restored from a previously poor quality waterway (1-3). Second, excellent background data were available, particularly on hydrology. Third, at the time most of these studies were initiated, the Willamette River was the largest river in the U.S. for which all point-source discharges were receiving secondary wastewater treatment. 

Boeije GM, Schowanek DR, Vanrilleghem A (2000) Incorporation of biofilm activity in river biodegradation modeling a case study for linear alkylbenzene sulphonate (LAS). Wat Res 34 1479... 

Navarro E, Guasch H, Sabater S (2002) Use of microbenthic algal communities in ecotoxico-logical tests for the assessment of water quality the Ter river case study. J Appl Phycol 14 41... 

Chen Y, Zhang D, Sun Y, Liu X, Wang N, Savenije HHG (2005) Water demand management A case study of the Heihe River Basin in China. Phys Chem Earth 30 (6-7 spec, iss.) 408 19... 

Case Study Occurrence of Pharmaceuticals in the Llobregat River (NE Spain). .. 218... 

Case Study Occurrence of Pharmaceuticals and Illicit Drugs in the Ebro River Basin... 

Tardy Y, Bustillo V, Boeglin JL (2004) Geochemistry applied to the watershed survey hydrograph separation, erosion and soil dynamics. A case study the basin of the Niger River, Africa. Appl Geochem 19 469-518... 

Guerra P, Cal ADL, Marsh G, Eljarrat E, BarcelA D (2009) Transfer of hexabromocyclo-dodecane from industrial effluents to sediments and biota case study in Cinca river (Spain). J Hydrol 369(3 t) 360-367... 

Case Study Investigation of the Occurrence and Toxicity of Pesticides in the Ebro River Delta... 

Subirats J, Font N, Costeja M (2002) Case study 1 Matarrana River Basin. Report for the European Water Regimes and the Notation of a Sustainable Status (EUWARENESS) project Universidad Autonoma de Barcelona, Spain, 68 pp... 

Mielke, H.W. 2007. Human actions as a force of change in the livability of the Earth A case study of the Mississippi River Delta and New Orleans. Zeitschift fur Geologische Wissenschaften, 35, 129-139. 

Rohmann SO, Miller RL, Scott EA, et al. 1985. Tracing a river s toxic pollution A case study of the Hudson. McCook AS, ed. New York, NY, Inform report no. 154. 

Bendz D, Paxeus NA, Ginn TR, Loge FJ (2005) Occurrence and fate of pharmaceutically active in the environment, a case study Hoje River in Sweden. J Hazard Mater 122 195-204... 

Peter A (2010) A plea for the restoration of Alpine rivers basic principles derived from the Rhone-Thur case study. In Bundi U (ed.) Alpine Waters. Handbook of Environmental Chemistry, Vol. 6. Springer, Heidelberg... 

A Plea for the Restoration of Alpine Rivers Basic Principles Derived from the Rhone-Thur Case Study... 

Using the process sequence in Fig. 1, ten key elements of a restoration project can be formulated. These are considered below. The case study of the widening of the River Thur is discussed as an example. Widening of the River Thur at Schaeff-aeuli (Switzerland) was carried out between 2001 and 2002. The river bed was widened from 50 to 100 m on both banks, along a river length of 1,500 m [8] (Fig. 2). 

The planned river restoration (river widening) of the River Thur at Weinfelden-Buerglen is also integrated as a case study in the discussion of these ten elements. 

Potentially Toxic Organic Compounds in Industrial Wastewaters and River Systems Two Case Studies... 

The identification and quantitation of potentially toxic substances in the environment requires the application of sophisticated analytical techniques. Ideally, these should exactly identify each of several hundred compounds present in very complex mixtures even though each species may have an environmental concentration of less than a part per billion. The most generally useful and widely employed analytical tool which meets these requirements is gas chromatography mass spectrometry (GCMS). In this paper, we will briefly review sample isolation methods which are used with GCMS and present two case studies on the organic compounds in industrial wastewaters and river systems which demonstrate these and other principles. 

Hites RA, Lopez-Avila V. 1980. Sedimentary accumulation of industrial organic compounds discharged into a river system. In Baker Ra, ed. Contaminants and sediments. Vo1. 1. Fate and transport case studies, modeling, toxicity. Ann Arbor, Ml Ann Arbor Sci., 53-66. 

Based on data from a demonstration at the Savannah River site, the total cost for SPSH was estimated to be 86/yd. In contrast, the use of traditional SVE at the site would have cost an estimated 576/yd. Total capital cost for the Savannah River site demonstration was estimated to be 1,277,300. Total operation and maintenance cost was estimated to be 16,900 per month. Table 1 gives a cost comparison between SPSH and SVE (D105759, pp. 15,16 D222606, p. 232). Detailed breakouts of capital cost as well as operation and maintenance cost can be found in Case Study 2. 

Finally, in Part V we present some case studies aimed at illustrating how to combine all the theories and concepts developed throughout the book. The environmental systems that we have chosen to do this include lakes (Chapter 23), rivers (chapter 24), and aquifers (chapter 25). These cases will also demonstrate how far one can go with simple models that do not need a large computer but just rely on the mathematical understanding of the user and perhaps on a simple pocket calculator to get quantitative results. 

First Case Study Chloroform in the Mississippi River Second Case Study Chemical Pollution of the River Rhine Due to a Fire in a Storehouse... 

In this section, we have put together a toolbox consisting of six transport and transformation processes which allow us to make a first and rather simple assessment of the fate of an organic compound in a river. Since all processes were described (or at least approximated) by linear equations, the resulting first-order rate constants ka (or the corresponding first order ea values) allow us to compare the relative importance of the different processes and to concentrate a further analysis on the most important ones. In order to demonstrate the strength of this method, we will now discuss two case studies in some detail. 

First Case Study Chloroform in the Mississippi River... 

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