Research on the Dry Acrylon
Wastewater Treatment by Single and Two Phase Anaerobic
Methods
YANG Xiao-yi1, JIANG Zhan-peng1, SHI
Shao-qi, guan Yun-tao1, DENG Jian-li2, HUANG
Bin2
(1.Department of Environment Science and
engineering, Qinghua University, Beijing 100084, China;
2. Research Institute of Qilu Petrochemical Corporation,
Zibo 255400, China)

　　Abstract:Single and two phase anaerobic
methods were tested to research their performances in
treating dryacrylon wastewater containing sulfate and
hard biodegradable substances. The results show that two
phase anaerobic process is of higher CODcr removal
efficiency, more stable operation condition, lower
sulfate radical disturbance and easier biodegradability
compared with single phase one. At pH value between 7.9
and 8.2, sulfate reduction becomes the main metabolic
pathway of the substrate degradation, At pH value
between 6.8 and 7.1, methanobacteria
predominate.
　　Keywords: acrylon wastewater;
wastewater treatment; anaerobic

　　全国5套同类型干法臆纶生产装置均采用厌氧-好氧-生物活性炭处理工艺，由于干法腈纶废水中含有一定浓度的硫酸盐和难生物降解物质，影响了厌氧系统对CODcr的去除率和运行稳定性，目前该工艺不能使出水达到国家排放要求。
　　两相厌氧对含有硫酸盐有机废水的研究目前还只是处于实验室研究阶段[1-2]，试验用水多采用葡萄糖配水，并且关于何种废水适用于采用两相厌氧消化工艺，观点尚未统一。有些人认为，厌氧消化是由多种菌群参与作用的生物过程，这些微生物种群的有效代谢相互联结，而两相厌氧消化过程将这一有机联系的过程分开，势必会改变稳定的中间代谢产物的成份，对消化过程产生一定影响。笔者则认为，如果采取的相分离得当，创造有利于不同细菌的生态环境，无疑会提高系统对难生物降解物质的处理能力和运行的稳定性。为此进行了单相厌氧和两相厌氧处理睛纶废水的试验研究，对其处理效率、运行稳定性进行对比。