摘要
以葡萄酒废水和污泥为试验材料,通过单因素试验及正交试验研究了超声频率、功率、时间、pH等因素对废水去除化学需氧量(COD)、悬浮物(SS)及污泥破解度(DDSCOD)等方面的影响。结果表明,单独超声处理废水50 min,超声频率100 kHz、pH值为3、功率为80 W时,COD去除率为45%,SS去除率为68%;复频超声频率组合40 kHz+120 kHz,功率80 W+80 W时,能将COD去除率提高到64%;超声与芬顿或铁炭微电解联用在超声频率100 kHz、功率80 W时,能将COD去除率分别提高到73%、67%;污泥经频率为20 kHz、功率为80 W的超声处理后,提高了6.4%污泥破解度,污泥溶出的多酚、单宁等物质含量分别增加了54 mg/L、30 mg/L,且超声破解后污泥能够延缓酒精发酵中酵母衰老,将发酵周期延长了2 d、提高了酒精度0.2%vol、增加了单宁23 mg/L、降低了残糖0.16 g/L。
Using the winery wastewater and sludge as the experimental materials, the effects of ultrasonic frequency, power, time, pH and other factors on chemical oxygen demand (COD), suspended solids (SS), sludge disintegration degree (DDSCOD), etc were researched by single factor experiments and orthogonal experiments. The results showed that the removal rates of COD and SS were 45% and 68%, respectively in the single ultrasonic treat- ment conditions of time 50 min, frequency 100 kHz, pH 3 and power 80 W. In the conditions of multi-frequency ultrasonic frequency 40 kHz+ 120 kHz, power 80 W+80 W, the removal rates of COD was up to 64%. Combining with fenton or iron carbon micro electrolysis, the removal rates of COD could be increased to 73%, 67%, respectively in the conditions of ultrasonic frequency 100 kHz, power 80 W. In the ultrasonic treatment conditions of frequency 20 kHz and power 80 W, the DDSCOD was increased by 6.4%, while the contents of polyphenols and tannins from sludge were in- creased by 54 mg/L and 30 mg/L, respectively. The sludge cracked by ultrasonic treatment could delay yeast aging in alcoholic fermentation, and the fermentation period was prolonged by 2 d, the content of alcohol and tannins were increased 0.2%vol and 23 mg/L, respectively. The residual sugar content was decreased by 0.16 g/L.
作者
唐国冬
廖欣怡
王雪真
杨继红
TANG Guodong LIAO Xinyi WANG Xuezhen YANG Jihong(College of Enology, Northwest Agriculture & Forestry University, Yangling 712100, China College o f Resources and Environment, Northwest Agriculture & Forestry University, Yangling 712100, China)
出处
《中国酿造》
CAS
北大核心
2017年第4期87-92,共6页
China Brewing
基金
陕西省农业科技创新与攻关项目(2015NY019)
关键词
超声处理
葡萄酒废水
污泥
发酵
ultrasonic treatment
winery wastewater
sludge
fermentation