UASB反应器处理制药废水的研究

中温（37±2℃）条件下采用有效容积为6L的UASB厌氧反应器处理某高硫酸盐、高CODcr的制药废水。采用投加CaO除SO4^2-的方法,对废水进行了预处理,废水中sSO4^2-质量浓度从19500mg／L降到5000mg／L左右。CODcr容积负荷从1．2kg／（m^3·d）逐渐提高到16．5kg／（m^3·d）,CODcr去除率从80％以上逐渐下降到40％。产气稳定,出水pH值稳定在7．5～8．0,VFA稳定在4mg／L左右。

Experimental study on high SO2-4 and high CODCr pharmaceutical wastewater with UASB

Under the condition of medium temperature （ 37 ±2 ℃ ） , a 6 L mesophilic UASB reactor was used to treat the high SO4^2- and high COD pharmaceutical wastewater. CaO was added into the wastewater to remove the SO4^2- during the pretreatment. The concentration of SO4^2-was reduced from 19 500 mg/L to 5 000 mg/L, the volume load increased from 1.2 kg/（m^3 · d） to 16.5 kg/（m^3 · d） gradually and the corresponding CODcr removal rate decreased from 80% to 40%. The gas production was Stable, pH of water and the VFA were stabilized at 7.5 ～8.0 and 4 mg / L, respectively.