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Problem statement: The composition of wastes is quite variable depending upon the&#13; generating source and mode of collection. Most of the material from the domestic activities will be&#13; organic in nature and contains essential plant nutrients, whereas the dumping material of commercial&#13; and industrial wastes usually contains appreciable amounts of heavy and potentially toxic metals and&#13; organic pollutants. Approach: Objective of the present study was to characterize the physico-chemical&#13; properties of the waste material and the distribution and extent of toxic pollutants in three selected&#13; typical dumping sites in the state of Haryana, India. Results: 62-65% of the waste fine material&#13; consisted of mineral particles and biodegradable organic waste, 20-25% consisted of construction and&#13; demolition waste and the remaining 10-15% were other materials such as study, plastic, metals, glass&#13; and timber, with an amount of polyethene of 3.4-5.7%. The ratio of the plant available concentrations&#13; of P, K and S and their total amounts were 3-7% for P and 1-4% for S, whereas the macronutrient&#13; potassium reached values of 29-39%. Metals As, Ba, Cd, Cr, Cu, Ni, Pb and Zn were present in all&#13; samples (total concentration in aqua regia extract). As, Ba, Ni and Pb did not show clear differences&#13; between the three investigates sites. Cd, Cr and Zn concentrations were high but different at the&#13; different sites (Cu maximum: 1,964 mg kg&#8722;1, Zn maximum: 2,200 mg kg&#8722;1). The mobility of the metals&#13; was calculated as the ratio of DTPA/aqua regia extraction. Cd showed the highest ratio (18-22%),&#13; while the other calculated metals showed much lower ratios (Cu 6.7, Pb 7.9 Ni 2.1, Zn 3.6 and Cr&#13; 0.5%). In general, PAH and benzo(a)pyrene concentrations fell below the detection limit. Also the&#13; phenol index did not exceed the detection limit of 1.2 mg kg&#8722;1 (with two exceptions). In 14 out of 36&#13; samples a GC-MS screening was conducted in order to get an overview of the organic pollutants&#13; usually present in the dumpsites. In all cases there was no relevant amount of organic pollutants that&#13; would be capable of measurement. Conclusion: The dumping sites are plant nutrient deposits,&#13; particularly for K, which could be used in future in a line with ideas of urban mining. The use of the&#13; waste material for fertilizing purposes may be restricted due to the metal contaminant concentrations.&#13; The analyzed organic pollutants did not indicate problematical concentrations

Physical Composition, Nutrients and Contaminants of Typical Waste Dumping Sites