棉浆粕稀黑液处理试验研究

棉浆粕稀黑液的生化物化处理试验表明,采用驯化活性污泥法可有效地去除稀黑液中易生物降解的有机物。当稀黑液CODCr进水浓度在3000～4000mg/L范围内,CODCr负荷18～20kg/m3·d时,CODCr去除率可达60%～65%,BOD5去除率可达85%～90%。生化出水经投加适当的化学混凝剂品种和剂量进行物化处理后,CODCr可进一步去除63%～70%。

EXPERIMENTAL RESEARCH ON TREATMENT OF COTTON PULP DIGESTION WASTEWATER

The microbial degradation with acclimated activated sludge process was investigated to characterize the biodegradability of the cotton pulp digestion wastewater with COD Cr concentration 3 000～4 000 mg/l.The experimental results demonstrated that the biodegradability (BOD 5/COD Cr ) of the cotton pulp digestion wastewater could not be raised evidently by hydrolytic acidification.On the other hand,The aerobic process results in good removal of BOD 5 (85～90%) and COD Cr (60～65%) respectively when COD Cr load is of 1 8～2 0kg/m 3·d.And subsequently chemical precipitation results in more removal of COD Cr (63～70%) when proper chemicals are added.