PEF技术在污泥厌氧消化处理中的应用研究

高压脉冲电场技术作为新型的污泥厌氧消化预处理手段,被国外学者广泛关注。高压脉冲电场可有效改善污泥的理化性质,提高污泥中溶解性物质的浓度,强化污泥的厌氧消化过程和产甲烷效率,并且可以作为外加的电子供体用于反硝化脱氮,但是其处理效果受多种因素的影响,只有在各因素协调配合的条件下,对污泥的预处理效果才能达到最佳。鉴于国内PEF技术在污泥预处理过程中的应用研究尚处于萌芽阶段,通过查阅大量的国内外文献,着重介绍了高压脉冲电场处理污泥的作用机理,分析了各个反应器控制参数对高压脉冲电场污泥预处理效果的影响。在今后的研究工作中应针对其作用机理、影响因素及相关运行设备进行更加深入的探讨研发,为实际生产工作提供科学指导依据。

RESEARCH ON APPLICATION OF PULSED ELECTRIC FIELD IN ANAEROBIC DIGESTION OF SLUDGE

As a new means of anaerobic digestion pretreatment，pulsed electric field( PEF) technology is highly concerned by foreign scholars． PEF can improve the physical and chemical properties of the sludge effectively，increase the concentration of dissolved substances in the sludge，and enhance the process of anaerobic digestion and methanogenic efficiency． Also PEF can be used as external electron donor for the denitrification nitrogen． But the treatment effect is influenced by many factors，and only under the rational conditions，the pretreatment effect of the sludge would achieve the best results． Since the application of PEF technology for domestic sludge pretreatment process is still in its infancy，according to literature，the mechanism of PEF technology is presented，and the effect of each control parameter is analyzed． At last，in order to provide scientific fundation for the actual production process，more research on its mechanism，related factors and operating equipment in the future studies are demanded．