The optimal treatment conditions of molasses alcohol wastewater by organobentonite are as follows: oganobentonite concentration is 5g(100mL)-1, pH value of treated wastewater is 9, adsorption temperature is around 70℃, and adsorption time is about 60min.
4. We studied the kinetics of the catalytic wet air oxidation to molasses alcohol wastewater. The results indicated that the reaction order of organics pollutants was 1.18, and that of oxygen was 0 when the appropriate oxygen supplied was as 3.4-4.6 times as that of the theoretic. The constant of reaction rate was 1.178(L.mg-1)0.18.min-1 under the temperature of 280℃.
Then on the basis of finding out the limit value of the single factor to the alcohol fermentation after analysis and determination of main inorganic and organic matter in molasses and its alcohol ic waste water , construct i on of yeast cells to self-flocculate by protop last fusion was put forward in this paper. Then the yeast strain suitable for molasses alcoholic waste water recycling was breed after physical and chemical mutagenization adopted to several times.
This paper summarizes the disposal methods of alcohol waste liquid which come from sugarcane molasses at first. Then on the basis of analysed and determinated the main inorganic and organic matter in molasses and its alcoholic waste water, the study design a new operation process of disposal method with biochemistry-absorption process and chemical method.
The study involved two experiments for investigating the dietary value of molasses/alcoholic waste water/bagasse fermented product (MABFP) on pig growers and fatteners.
Treating the thin stillage of centrifugalization with flocculation,the removing rates of suspended solids could be 86.57%~89.62%, and the removing rates of COD could be 58.2%~59.2%.
Therefore it is necessary to reduce organic acids contain or to improvethe ability of yeast strain suitable for high density organic acids through taming yeast strain in order to realize high thin stillage recycling ratio.
The ratio of thin stillage recycling fermentation of the objective yeast strain is improved from 30% to 50-60%(adopting the double concentration flow).
CDS is obtained after the removal of ethanol by distillation from the yeast fermentation of a grain or a grain mixture by condensing the thin stillage fraction to semisolid.
By succesive recycling of the thin stillage in mashing and fermenting fresh corn, the glycerol content in each fermentation increased by about 0.4% and accumulated to a high of 2.1% in the beer of the fifth recycle.