Potential removal of organic loads from petroleum wastewater and its effect on the corrosion behavior of municipal networks.
J Environ Manage
; 219: 325-331, 2018 Aug 01.
Article
em En
| MEDLINE
| ID: mdl-29753240
ABSTRACT
A potential and cost-effective treatment method utilizing thermally activated bentonite was evaluated for the treatment of highly loaded real petroleum processing wastewater (CODâ¯=â¯4500â¯mg/L) in order to reduce its COD and improve the corrosion properties. A save discharging COD limit of the treated effluent (800â¯mg/L) is achieved by using 6â¯g/L of calcinated bentonite after reaching the steady state (1â¯h of shaking) at pH 5. The durability of bentonite is proved. The corrosion behavior of the treated wastewater was investigated for mild steel by using electrochemical and weight loss measurements. The results proved that the corrosion rate of the wastewater was slightly reduced after the treatment process. More improvement of the corrosion resistance was achieved by adding sodium hexa-meta-phosphate (SHMP) corrosion inhibitor to the treated water. Tri-methyl ammonium bromide (CTAB) biocide was also added before discharging into municipal networks.
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01-internacional
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MEDLINE
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Petróleo
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Idioma:
En
Revista:
J Environ Manage
Ano de publicação:
2018
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Article