高硫废水厌氧消化中硫酸盐抑制解除方法的研究

Studies on Ways of Removing Sulphates Inhibition in High Sulphate Wastewater Anaerobic Digestion

本文采用物理化学和厌氧消化等手段，对含高硫有机废水厌氧消化中硫酸盐抑制的解除方法进行了研究。采用投加以铁盐为主体的复合脱硫剂ＨＳ－１，糖蜜酒精废水厌氧处理小试运行结果为，有机负荷稳定在８０ｇＣＯＤ／（Ｌｄ）以上，容积产气率在３Ｌ／（Ｌｄ）以上，ＣＯＤ去除率为７５％～７８％，达到稳定运行的效果。沼气中Ｈ２Ｓ含量在１０ｍｇ／ｍ３以下，低于城市用煤气标准（２０ｍｇ／ｍ３）。

Physical chemistry and anaerobic digestion technologies were employed to study the ways of removing sulphates inhibition in high sulphate wastewater anaerobic digestion By adding HS-1 with iron salts as its main composition,the results showed that the efficiency of molasses alcohol wastewater treatment is high The stable operation was obtained under loading rate over 8 0gCOD/(L d),the volumetric gas production rate was over 3L/(L d);the COD removal rate was 75%～78%;The H 2S content in biogas was below 10mg/m 3,lower than the city gas standard (20mg/m 3)