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Sodium and potassium in the groundwater in areas near the Maslice Municipal Refuse Dump in Wroclaw

100%

Szymanska-Pulikowska A.

Journal of Elementology

2008

tom 13

nr 4

665-673

Sodium and potassium are alkaline metals commonly occurring in natural environment. In clean groundwater their content usually does not exceed the value of 100 mg⋅dm-3 (Na) and 90 mg⋅dm-3 (K). Leakage waters of unsealed or improperly sealed refuse dumps constitute a potential grave source of water environment contamination. In the initial years of refuse dumping the leakage may contain up to 2,500 mg⋅dm-3 of sodium and up to 3,100 mg⋅dm-3 of potassium. The leakage from “old” dumps contains up to 3,700 mg⋅dm-3 sodium and up to 1,580 mg⋅dm-3 potassium. The purpose of this paper was to demonstrate the character and the dynamics of the changes in sodium and potassium concentrations in the leakage waters of the Maoelice Refuse Dump in Wrocław and in the groundwater in the adjacent areas. Since sand-gravel deposits lie in the base of the dump and the groundwater level is fairly high, contact occurs between the groundwater and the dumped waste as well as contamination transfer. Only part of the dump has a sealing and a drainage carrying the leakage to a tank. In the late 1990s the exploitation of the dump was terminated and rehabilitation started with a view to limiting the access of the water to the refuse dump. The paper presented the results of the research covering the period from 1995 to 2007 on sodium and potassium contents in the groundwater coming to the dump, in the dump leakage and in the groundwater coming out of the dump. The research has shown that both the concentrations and the proportions between sodium and potassium contents in the groundwater coming to the dump stayed within the natural ranges, exceeding them only in 2000-2001. The leakage, despite closing and rehabilitating the dump, was still characterized by fairly high and balanced concentrations of the analyzed elements. Also sodium and potassium contents in the groundwater coming out of the dump were high and balanced, which proves a continuous inflow of pollution through the unsealed base of the facility.

Ograniczanie wyników

1 Journal of Elementology

1 Szymanska-Pulikowska A.

1 2008

Wyniki wyszukiwania

Sodium and potassium in the groundwater in areas near the Maslice Municipal Refuse Dump in Wroclaw