Evaluation of environmental impact produced by different economic activities with the global pollution index

Abstract

The I (GP)* values for each productive unit (i.e. 1.664-2.414) correspond to an 'environment modified by industrial/economic activity within admissible limits, having potential of generating discomfort effects'. The evaluation results are significant in view of future development of each productive unit and sustain the economic production in terms of environment protection with respect to a preventive environment protection scheme and continuous measures of pollution control.

Comparative overview of primary sedimentation-based mechanical stage in some Romanian wastewater treatment systems

“…WW and primary sludge pumping system, existing gritting traps, settlers, associated or not with coagulation-flocculation installation, or other treatment facilities [20][21][22][23][24][25].…”

“…effluent from primary sedimentation, without coagulation-flocculation in the case of urban WWTP and with additional coagulation-flocculation or stabilisation step in the case of industrial WWTP) or mechanical- biological treatment steps (final effluent from urban WWTP) are presented in Table 6, considering especially some common quality indicators required to be controlled in each compliance plan for comparison with the maximal permitted limits (recommended by environmental controller). of basic aromatic products for alimentary industry, food, flavours as C14-C16 aldehydes, γ and ω lactones, cyclic cetones, esters, glycolates, ntermediate fractions from petroleum products) [20,22], [23] (with WWTP No. 2) aeration/oxidation basin, 2 secondary radial settlers of 35 m in diameter, chemicals used as nutrients (10% industrial lime for pH correction, 10% tri-sodium phosphate, 10% urea); it exists also 1 biofilter (h=4 m, chemically inert granite support, 4-8 cm-material size); for sludge line -(3) sludge evacuation (pumping, recycling) and in-excess sludge treatment (mechanical and gravitational concentration to 6-10% solids, and dewatering); A required standard quality must be related to the treated wastewater when it is used as processing water, or for recycling/reusing goal, and also if is discharged in local receiving watercourse [1,5].…”

Control Study of Siret River Quality in Pascani County Area and Estimation of Its Pollution Level

“…The values of analyzed quality indicators of Siret River are used in calculation of water quality indexes, EQ i (Eq.1), and also of evaluation scores, ES i , expressed by marks between 1 and 10 attributed based on evaluation scale presented in other authors' researches. 8,9,15,16 EQ i = C i,measured / MAC i (1) in which, i -identification of the specific quality indicator; C i,measuredmeasured/analyzed value of the quality indicator, and MAC i -maximum admissible concentration of the quality indicator in accordance with the imposed limits of local environmental authority/regulator or legislation. (Fig.1).…”

“…Graphical representation of the alternative methodology of global pollution index (I * GP ) (S i -ideal state and S r -real state). 8,9,17,18 The correlation between the global pollution index (I * GP ), real state of aquatic environment of Siret River, and the impact of different activities in Pascani town area is characterized in table 1.…”

“…This is the reason for why the aquatic environmental impact assessment caused by the whole social-economical development in the studied Romanian town area is estimated by the global pollution index (I * GP ), and also the water quality expressed by a quality index (EQ w ). 8,9,15,16 This is one of the paper target which evaluates the whole productive and domestic activities in June month (2013) in order to follow the development strategy 5,800 millions m 3 -surface water resources, and 1,068 millions m 3 -ground water resources, deserving more than 2,500,867 inhabitants, from which: 39.6% (990,379 inhabitants) in urban area. 10 In the Siret h.b.…”