摘要：

以两相厌氧生物处理工艺的产酸相作为硫酸盐还原单元,以食用红糖为碳源,通过连续流实验,重点研究了产酸相中m(COD)/m(SO₄ ^2-(C/S))(C/S)对SO₄ ^2-(C/S)去除率的影响。在(34±1)℃、进水碱度300～500 mg/L、pH 6.0～6.2、氧化还原电位-250～-350 mV条件下,当进水C/S>2.0时,SO₄ ^2-(C/S)去除率>81%;当进水C/S为2.0～2.5时,SO₄ ^2-(C/S)去除率为81%～90%;当进水C/S<2.5时,SO₄ ^2-(C/S)去除率<90%。随着C/S的降低,SO₄ ^2-(C/S)的去除效果会有所降低。

关键词: 产酸脱硫反应器, SO₄ ^2-(C/S)去除率, 硫酸盐还原菌

Abstract:

In order to investigate the effect of COD/SO₄ ^2-(C/S) on sulfate removal rate in an acidogenic phase reactor of two-phase anaerobic bio-treatment system, a group of continuous-flow experiments have been conducted in an acidogenic sulfate-reducing reactor in which brown sugar is the source of carbon . The operation conditions of the reactor are controlled as follows: temperature at ( 34±1) ℃, influent alkalinity at 300- 500 mg/L, pH at 6.0- 6.2, oxidation reduction potential at - 250- - 350 mV. It is demonstrated that the sulfate removal rate is less than 81% when the influent C/S is less than 2.0, and 81% to 90% sulfate removal rate could be achieved when the influent C/S is at 2.0 to 2.5, and more than 90% when C/S is more than 2.5. In conclusion, with the influent C/S reduces, the sulfate removal rate reduces, too.

Key words: acidogenic desulfuration reactor, sulfate removal rate, sulfate reducing bacteria

中图分类号: 

• X703.1