Abstract
According to our previous results on the magnesium-based exhaust gas cleaning system (Mg-EGCS), certain parameters of the desulphurization wastewater (such as chemical oxygen demand (COD), suspended solids (SS), total oil content and turbidity) were above the washwater discharge criteria set by the International Maritime Organization (IMO). In this work, a novel combined process of aeration-centrifugation and filter pressing was proposed, and a pilot-scale experiment was carried out to treat the desulphurization wastewater. The results demonstrated that the quality of wastewater treated by the combined process could meet the IMO’s washwater discharge standard, with COD of 115 mg/L, SS of <5 mg/L, polycyclic aromatic hydrocarbons (PAHs) of <1 μg/L, and total oil content of 5.1 mg/L, when the washwater flow rate was 0.45 m3/h.
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Acknowledgements
This research was supported by the Marine High-tech Research Project of Chinese Ministry for Industry and Information Technology ([2012]541) and the Higher Education Development Fund (for Collaborative Innovation Center) of Liaoning Province, China (20110216008).
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Li, T., Sha, L., Liu, Q. et al. Pilot-Scale Study on Treating Wastewater from Magnesium-Based Exhaust Gas Cleaning System by a Novel Process. Water Air Soil Pollut 228, 61 (2017). https://doi.org/10.1007/s11270-017-3246-3
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DOI: https://doi.org/10.1007/s11270-017-3246-3