UASB反应器处理烧碱－蒽醌草浆黑液的污泥颗粒化过程

Sludge Granulation in UASB Reactor for Anerobic Treatment of Soda-AQ Straw Pulp Black Liquor

用两套处理Ｓｏｄａ－ＡＱ化学草浆黑液上流式厌氧污泥床（ＵＡＳＢ）反应器作对比实验，研究处理这种废水的ＵＡＳＢ反应器的污泥颗粒化过程，并达到了１０ｋｇＣＯＤ／ｍ３·ｄ的工作负荷及在此负荷下ＣＯＤ（ｃｒ）４０％～５０％、ＢＯＤ５５６．５％～６３．５％的去除率，去除１ｇＣＯＤ产气量达到５１１ｍｌ，其中ＣＨ４含量为６６．８％。

Two laboratory UASB reactors were used to treat black liquor from soda-AQ cooks of wheat straw for parallel studies. In the two reactors, sludge granulation was conducted. It has been observed that a UASB reactor without its gas-solids separator in operation was more favorable to the sludge granulation due to its accelerating wash out of the flocculants.One-step UASB reactor was preferable to the black liquor treatment. In addition, properly controlled low influent consistency and gradual increase in loading rates were also necessary for the granulation. At a loading of 10 kgCOD/m3·d, 40%-46% COD and 56%-65% BOD were removed and 510 L biogas/kgCOD removed was yielded.