A Novel Application of Expanded Glass Materials in Sulfate Reducing Bacteria Cultivation

Abstract:

Smelting waste water is typically considered as an environmental pollutant. It will contaminate watercourses, crops and aquatic organism when it is discharged into the environment. Traditionally, the metallurgy plant treats this kind of waste water with neutralization method. However, the neutralization method usually ends up with large amounts of neutralization sludge which is a typical kind of hazardous solid waste. In our research, we used an up-flow anaerobic sludge bed to treat smelting waste water which was neutralized to a certain pH. We combined the traditional neutralization method with microbial technique. The neutralized water was pumped into the bioreactor that had been inoculated with sulfite reducing bacteria on a novel expanded hollow glass bead. In our research, we decreased the lime consume and sludge production, and we decrease the metal ion and sulfate in the smelting waste water at the same time. We combined the traditional neutralization method with microbial treatment and developed a novel solution to deal with smelting waste water. After 8 weeks, the concentration of Zn²⁺ was decreased by 34.7%, and the concentration of SO₄^2- was decreased by 58.3%.

• Periodical: Key Engineering Materials (Volume 730)
• Pages: 190-194
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.730.190
• Online since: February 2017
• Authors: Zi Ning Wang, Xing Yu Liu*, Qi Yuan Gu, Ming Jiang Zhang
• Keywords: Bioreactor, Expanded Glass, Smelting Waste Water, Sulfate Reducing Bacteria

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