碱法草浆废水厌氧生物降解性的研究

STUDY ON ANAEROBIC BIODEGRADATION OF THE EFFLUENT FROM ALKALINE STRAW CHEMICAL PULP

对碱法草浆废水厌氧生物降解性进行了研究,结果表明:酸析法提取木素后,黑液BOD_5/COD_(cr)由0.27上升到0.32,静态厌氧发酵后COD去除率增加16.5％,说明黑液经酸析木素后可生化处理性大大提高,综合废水BOD_5/COD_(cr)为0.3,COD去除率为51.4％,BOD％为60.66％,表明此类废水易进行厌氧生化法处理。

This study indicates that the BOD5/CODcr of the black liquor from alkaline straw chemical pulp increased from 0. 27 to 0. 3, the COD removal increased about 16. 5% after the lingnin was deposed using acid; The BOD5/CODcr of the comprehensive effluent reached 0. 3, COD can be removed about 51. 4%, and the BD% was 60. 66%. From these data we can conclude it will be feasible treating the comprehensive effluent from alkaline straw chemical pulp by anaerobic treatment.