硫酸盐还原作用对厌氧消化过程的影响与控制

本文综述和分析了厌氧消化过程中,硫盐酸还原作用的影响及控制方法。对于硫酸盐还原细菌的种类及生长特性进行了归纳,同时指出:硫酸盐还原作用对厌氧消化的抑制影响主要来自二方面:一是基质的竞争性利用;二是还原产物硫化物对细菌生长的抑制作用。根据不同的过程原理,控制硫酸盐还原作用的方法有:物理法—空气或纯O_2充气技术;化学法—投加化学药剂;生物法—二相厌氧消化工艺,其中以生物法最有应用价值。有关二相厌氧消化工艺的运行特性与微生物学基础,处理高浓度硫酸盐废水的可行性等,文章进行了分析探讨。

THE EFFECT AND OF SULPHATE REDUCTION ON ANAEROBIC DIGESTION

This Paper examined the effect of sulphate reduction and the control method during the process of anaerobic digestion. The species of sulphate reduction microbes and the growth property were summaried. The paper indicated that two aspects are responsible for the inhibition of anaerobic digestion from sulphate reduction: one is the competitive utilization of substrate and the other is the inhibition of the growth of bacteria from snlphide, the reduction products. Physiological, chemical and biological methods are adopted for controlling the redaction of sulphate, of which, biological method is of great tahoe in application, The paper also probed the operation property and microbiological fundamentals of two-phase anaerobic digestion technology associated as well as the fesibility for treating sulphate wastewater of high concentration.