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Heavy Metal Balance in a Communal Wastewater Treatment Plant

Gulyás, Gábor and Pitás, Viktória and Fazekas, Bence and Kárpáti, Árpád (2015) Heavy Metal Balance in a Communal Wastewater Treatment Plant. HUNGARIAN JOURNAL OF INDUSTRY AND CHEMISTRY, 43 (1). pp. 1-5. ISSN 0133-0276

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Abstract

Heavy metal removal from a municipal wastewater treatment plant was evaluated in the given study. The aim of the work was to find water or sludge streams in the technology that could be treated separately for heavy metal removal to maximise the efficiency of the entire treatment. The results proved that in the plant studied 70–80% of the metal content was discharged. Only 5–20% was retained in the digested sludge. A small percentage of the metal content of the influent could only be measured in the primary and secondary sludges. Otherwise, there were very similar metal concentrations in these sludge streams. The reject water exhibited an inconsiderable level of metal recycling in the technology, no more than 2–3% of the influent load. Some 2–10% of the heavy metal content of the inlet was removed from the sand trap. We did not find the separate heavy metal removal from the sludge streams efficient as most of the heavy metal load finally was discharged from the treatment plant with the treated effluent into the recipient.

Item Type: Article
Uncontrolled Keywords: MUNICIPAL WASTEWATER; Mass balance; Heavy metals; Activated sludge
Subjects: Q Science / természettudomány > QD Chemistry / kémia
Q Science / természettudomány > QH Natural history / természetrajz > QH540 Ecology / ökológia
T Technology / alkalmazott, műszaki tudományok > T2 Technology (General) / műszaki tudományok általában
SWORD Depositor: MTMT SWORD
Depositing User: MTMT SWORD
Date Deposited: 23 Jul 2015 05:46
Last Modified: 23 Jul 2015 05:46
URI: http://real.mtak.hu/id/eprint/25568

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