摘要
对玉米秸秆处理餐饮废水厌氧发酵产沼气特性进行了初步研究。通过气相色谱测定厌氧发酵过程中乙酸、丙酸和产气量变化情况。对不同污泥与秸秆质量比(1∶1.5,1∶2,1∶3,1∶6)和不同温度(38,40,45℃)的产气效果进行研究,结果表明,活性污泥与玉米秸秆投加质量比为1∶2时,甲烷体积分数最高,为58.43%,产气效果最好。温度为40℃时,甲烷体积分数最高,为62.73%,产气效果最好。通过最佳条件(污泥与秸秆质量比1∶2,温度40℃)下的整个发酵过程可以看出,在开始阶段,甲烷气体产量逐渐上升,趋于稳定后下降,甲烷气体体积分数在发酵中期显著增长后趋于稳定。在发酵初期,乙酸和丙酸产量增长缓慢,发酵中期都显著增长,同时趋于稳定,发酵末期则逐渐下降。
The characteristics of biogas production by anaerobic fermentation of catering wastewater treated with corn straw were studied.The changes of typical small molecular organic acid(acetic acid and propionic acid)and the changes of producing gas in the process of anaerobic fermentation of the catering wastewater treated with corn straw were determined by gas chromatography.The characteristics of producing gas under different ratios of sludge and straw(1∶1.5,1∶2,1∶3 and 1∶6)and different temperatures(38,40 and 45℃)were studied.The results showed that when the ratio of activated sludge and corn straw was 1∶2,the highest volume percentage of methane was 58.43%,the effect of producing gas was the best.The effect of the anaerobic fermentation of corn straw was best when the temperatures was 40℃and the highest volume percentage of methane was 62.73%.Under the optimum culture condition(40℃,sludge and straw of 1∶2),the yield of biogas gradually increased at the beginning of the fermentation.After stabilization,the volume percentage content of biogas tended to decrease.The yield of acetic acid and propionic acid slowly grew in the initial stage of the fermentation.They significantly increased in the medium period of the fermentation,and at the same time they became stable,and at the end of the fermentation they gradually decreased.
作者
申荣艳
樊思慰
王永娃
杨长进
黄勇
SHEN Rongyan;FAN Siwei;WANG Yongwa;YANG Changjin;HUANG Yong(School of Environmental&Safety Engineering,Changzhou University,Changzhou 213164,China)
出处
《常州大学学报（自然科学版）》
CAS
2020年第5期58-66,共9页
Journal of Changzhou University：Natural Science Edition
基金
江苏省高校自然科学研究面上资助项目(16KJB610001)。
关键词
餐饮废水
玉米秸秆
厌氧发酵
甲烷气体
乙酸
丙酸
catering wastewater
corn straw
anaerobic fermentation
biogas
acetic acid
propionic acid
