Under the action of SRB, the sulfate in the wastewater containing high-concentration sulfate was reduced to sulfide during anaerobic process, which not only produced odor but also had an adverse effect on biochemical treatment system. Taking printing and dying wastewater as the research object, the inhibiting effect of immobilized biocatalyst (IBC) on sulfide during anaerobic process was investigated. The results showed that: after 2 month of operation, the amount of SRB in the anaerobic reaction tank added with IBC decreased from 7.8 × 106 to 2.5 × 105 per mL, the mass concentration of sulfide was maintained at about 40 mg/L, which was 50% lower than that of the anaerobic reaction tank without added IBC. Further more, the removal rates of CODCr and chroma by the former one (36.0% and 65.3%) were also higher than that by the latter one (29.9% and 57.1%). Therefore, adding IBC could significantly inhibit the activity of SRB and the production of sulfide, and improve the water purification effect simultaneously.%厌氧过程中,硫酸盐浓度较高的废水在硫酸盐还原菌(SRB)的作用下将硫酸盐还原为硫化物,产生臭味且影响生化效率.以印染废水为研究对象,考察生物制剂IBC在厌氧过程中抑制硫化物产生的效果.结果表明:运行2个月后试验组污泥SRB数量由原来的7.8×106个/mL降为2.5×105个/mL,试验组硫化物的质量浓度维持在40 mg/L左右,相比对照组降低了50％.试验组对CODCr、色度的平均去除率分别为36.0％、65.3％,较对照组的29.9％、57.1％均有所提高.投加生物制剂IBC能显著抑制硫酸盐还原菌的活性和硫化物的产生,同时提高水质净化效果.
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