Dynamic research on the anaerobic treatment of cellulosic ethanol wastewater producing methane

doi:10.11894/1005-829x.2016.36(10).060

Abstract

Abstract:

Cellulosic ethanol wastewater as the research target,the BMP test is carried out,under the following conditions:the mass ratio of substrate COD/inoculum VSS are 0.13,0.27,0.40,0.54,respectively,and the initial COD are 5,10,15,20 g/L,respectively. The results show that after a 30 day anaerobic fermentation,the BMP test results of various samples are 37.7,81.2,114.2,153.0 mL/gVSS,respectively,and anaerobic biodegradability R_A is above 80%. The modified Gompertz model is used for the nonlinear fitting of cumulative methane production. The model can exactly predict the maximum methane production velocity,anaerobic starting lag phase,and suitable residence time,under different initial organic loading. After the BMP test,the COD removing rate obtained is higher than 80%,and both pHand alkalinity are improved remarkably.

Key words: anaerobic treatment, cellulosic ethanol wastewater, methane production potential

摘要：

以纤维素乙醇废水为研究对象，在底物COD与接种物VSS的质量比分别为0.13、0.27、0.40、0.54，初始COD分别为5、10、15、20 g/L的条件下进行了BMP测试。结果表明：厌氧发酵30 d后各样品的BMP测试结果分别为37.7、81.2、114.2、153.0 mL/gVSS，厌氧生物可降解率R_A在80%以上。利用修正的Gompertz模型对累积产甲烷量进行非线性拟合，模型可以准确地预测出不同初始有机负荷下的最大产甲烷速率、厌氧启动延滞期以及合适的停留时间。BMP测试结束后，测得COD去除率达到80%以上，pH和碱度均显著提高。

关键词: 厌氧处理, 纤维素乙醇废水, 产甲烷潜力

CLC Number:

X703

Zhang Lei, Guo Hongshan, Li Baozhong, Chen Tianzuo, Zhu Wei. Dynamic research on the anaerobic treatment of cellulosic ethanol wastewater producing methane[J]. INDUSTRIAL WATER TREATMENT, 2016, 36(10): 60-64.

张蕾, 郭宏山, 李宝忠, 陈天佐, 朱卫. 厌氧处理纤维素乙醇废水产甲烷动态研究[J]. 工业水处理, 2016, 36(10): 60-64.

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URL: https://www.iwt.cn/EN/10.11894/1005-829x.2016.36(10).060

https://www.iwt.cn/EN/Y2016/V36/I10/60

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