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 Home > RESEARCH > Water Treatment > Industrial wastewater Treatment
    Industrial wastewater
Industrial wastewater treatment covers the mechanisms and processes used to treat waters that have been contaminated in some way by anthropogenic industrial or commercial activities prior to its release into the environment or its re-use. Most industries produce some wet waste although recent trends in the developed world have been to minimize such production or recycle such waste within the production process. However, many industries remain dependent on processes that produce wastewaters
Our wastewater treatment research team has focused on the removal of various organic and nitrogen pollutants generated from the industrial wastewater and monitoring microbial community using the molecular techniques such as t-RFLP, Real time PCR, and FISH
For example, Purified terephthalic acid (PTA) is widely used as a raw material of various petrochemical products such as polyethylene terephthalate bottles, polyester textile fibers, polyester films, etc. Commercial PTA is usually produced via ‘‘Amoco MC” process, a wet oxidation process, where p-xylene is oxidized by air in the presence of acetic acid. During the PTA manufacturing procedures, a high strength organic wastewater, so-called PTA wastewater, is generated in the ratio of 3–10 m3 wastewaters per ton PTA. The major organic compounds in the PTA wastewater are terephthalic acid, acetic acid, benzoic acid, and p-toluic acid. Other minor organic pollutants such as trimellitic acid, o-phthalic acid and 4-carboxybenzaldehyde are also present in the wastewater.
Meanwhile, the production of iron from its ores involves powerful reduction reactions in blast furnaces. Cooling waters are inevitably contaminated with products especially ammonia and cyanide. Production of coke from coal in coking plants also requires water cooling and the use of water in by-products separation. Contamination of waste streams includes gasification products such as benzene, naphthalene, anthracene, cyanide, ammonia, phenols, and cresols together with a range of more complex organic compounds known collectively as polycyclic aromatic hydrocarbons (PAH).
The industrial wastewater treatment includes solvent extraction, steam stripping and biological treatment. Among the various treatment types, our team is mainly focusing on various biological treatment such as the sequencing batch reactor (SBR), the anoxic-oxic (A-O) process, the anaerobic-anoxic-oxic (A1-A2-O) process, upflow anaerobic sludge blanket (UASB), anaerobic filter process and membrane process.

In addition, our team also is investigating the composition of the microbial community and structure in granular sludge to understand the underlying mechanisms, such as granule formation and metabolic functionality.


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