Experimental Study On The Technology Of Immobilized Technology In Yeast Wastewater

In order to provide an effective and economic method for the treatment of yeast wastewater, this study taken yeast wastewater as objection, and applied immobilized Bio Cleaner microorganism technology into yeast wastewater’s treatment, then explored the degradation effect of major pollutants of yeast wastewater.The results showed that:(1) Analysis of SEM and FTIR indicated that the immobilized carrier was a kind of composite carrier composed of organic and inorganic material, it has good hydrophilicity. Besides, the structure increased effective microorganisms attachable area greatly, ensured the normal physiological metabolism of bacteria. (2) Organic component analysis showed that molasses yeast wastewater containing sulfur compounds, indole, phenol, heterocyclic compounds and other semi volatile organic compounds such as alcohols, The removal efficiency of semi-volatile organics in the Bio Cleaner immobilized microbial treatment system were 98%. (3) The species identification results shown that wastewater contained some dominant bacteria which had a role of decomposed nitrogen and organic matter, such as Sphingomonas paucimobilis, Pseudomonas putida, Acinetobacter lwoffii, Pseudomonas stutzeri and Shewanella putrefaciens. (4) The removal efficiency of chemical oxygen demand (COD), ammonia nitrogen (NH4+-N), total nitrogen (TN) and total organic carbon (TOC) of yeast wastewater in the Bio Cleaner immobilized microbial treatment system were 71.1%,99.7%,85.9% and 67.0%, respectively. The concentration of this pollutant in wastewater after treatment reach the direct discharge standards of water pollutants in new enterprise that regulate in DISCHARGE STABDARD OF WATER POLLUTANTS FOR YEAST INDUSTRY (GB25462-2010).