含硫酸盐有机废水处理问题的探讨

An Approach to the Treatment of Sulfa-te-Containing Organic Wastewater.

本文分析硫酸盐对厌氧生物处理的不利影响,即硫酸盐通过硫酸盐还原菌对厌氧发酵的第一次抑制作用和硫酸盐的还原产物——硫化氢对产甲烷菌的第二次抑制作用.讨论决定硫酸盐对厌氧生物处理影响程度的几个因素:进水COD/SO_4^(2-)、重金属离子浓度、消化液pH、厌氧污泥浓度等,并认为COD/SO_4^(2-)是其中最主要的因素;最后对处理该类废水的几种方法进行了综述.

This paper introduces several common high sulfate-containing organic wastewater and analyses the detrimental effect of sulfate on anaerobic biological treatment. This includes the first inhibiting effect of sulfate-reduc-ing bacteria on the anaerobic fermentation and the second inhibiting effect of hydrogen sulfide, the reduction product of sulfate, on the methane-producing bacteria. The main factors which determine the extent of the effect of sulfate on the anaerobic treatment, such as COD/SO4(Ⅱ) and heavy metal ion concentration of the wasterwater to be treated, and pH of digestive juice, anaerobic sludge concentration etc., were discussed. It is found that COD/SO4(Ⅱ) of the wastewater is the key factor. Several methods for treatment of this kind of wastewater were also reviewed.