THE IMPACT OF CLUJ-NAPOCA MUNICIPAL LANDFILL ON ZĂPODIE STREAM WATER QUALITY
LENGYEL ANDREA, RETI KINGA-OLGA, ROŞU CRISTINA, D. MANCIULA
ABSTRACT. - The impact of Cluj-Napoca municipal landfill on Zăpodie stream water quality. Zăpodie stream is subjected to pollution with organic matter, nutrients, heavy metals, due to leakage and seepage of leachate from landfill platform in Cluj-Napoca. For determining the quality of the Zăpodie stream we analyzed several physico-chemical indicators such as pH, TDS, EC, ORP and salinity during January-May 2012. Furthermore, we performed a physico-chemical analysis of the leachate so we can correlate with qualitative results obtained for Zăpodie stream. In addition we also measured the leachate concentrations of Zn, Cu, Cd, cations (Na²+, Ca²+, Mg²+) and anions (SO4²-, Cl-, PO43-). Ramp leakage exceeded the MAC (maximal admitted concentration) mentioned in NTPA 001/2005 and HG 352/2005 for Ca²+ and SO4²- and both can cause a possible pollution of mineral nature. For the case of heavy metals, Zn exceeded the values set by NTPA 001/2005. A biological analysis of stream water was also performed in order to monitor the activity and biological load in a polluted environment. After analysis we detected a water pollution indicator species, namely UNIRAMIA-insects: Chironomus.
Keywords: Zăpodie stream, waste, landfill leachate, water quality