制革脱毛废液中硫化物在酸化污泥中的吸附规律

Sulfide Distribution of Dehairing Wastewater in Acidification Sludge

采用改装上流式反应器，通过实验室模拟试验，研究了pH、硫化物浓度、气提速率等因素对厌氧酸化污泥吸附制革脱毛废液中硫化物的影响。结果表明：经厌氧酸化后，产酸相可将高pH、含硫化物废水的pH值降低至6以下，达到物化酸化脱硫的要求，同时污泥吸附硫化物量降低2％～8％。酸化反应器中硫化物分布不均匀，上部液相硫化物浓度高达114mgS·L^-1。气提作用可使液相中硫化物浓度降低30％～50％，但对污泥吸附硫化物无影响，污泥的饱和硫化物吸附量为26．3mgS·L^-1。

The factors that influence the sulfide distribution of dehairing wastewater in acidification modified up - flow reactor, for example, pH, the sulfide concentration and gas stripping rate etc. It shows influent is below 6, the rate of sulfide adsorption can be decreased by 2% -8%. The content of sulfide 50% by gas stripping. But the sulfide adsorption of sludge was not affected, and the max adsorption was sludge were studied in that when the pH of the can be reduced 30% - 26.3 mgS·L^-1.