分别采用电解、电解+水解酸化、水解酸化+好氧、脱色絮凝+水解酸化+好氧工艺处理河北吉藁化纤有限公司的棉浆原液废水(COD、色度高达4484 mg/L、1 250倍),并分别用MD-02脱色剂和次氯酸钠处理该公司污水处理厂的出水(COD、色度分别为611.2 mg/L、500倍).试验结果表明:电解工艺可较大幅度地降低废水的色度,去除率达60%～72%;电解+水解工艺对色度的去除效果较为显著；常规的水解+好氧组合工艺对色度只有约23.2%的去除率,显示出常规生化处理对棉浆废水色度去除能力的局限性;脱色絮凝+水解+好氧组合工艺对棉浆原液废水的COD、色度去除效果非常明显,是较理想的预处理工艺.%The processes, such as electrolysis, electrolysis- hydrolytic acidification, hydrolytic acidification-aerobic, decoloration flocculation-hydrolytic acidification-aerobic,have been used for treating the cotton pulp stock solution wastewater from Jigao Chemical Fibre Co.,Ltd.,whose COD is as high as 4 484 mg/L,and chroma 1 250 times. The effluent,whose COD is 611.2 mg/L and chroma 500 times,of the Wastewater Treatment Plant of the Company has been treated by MD-02 decoloring agent and sodium hypochlorite respectively. The experimental results show that electrolysis process can reduce the chroma of wastewater substantially and its removal rate reaches 60% -72%. Electrolysis-hydrolysis process has remarkable chroma removal effect. The chroma removal rate of the conventional hydrolysis-aerobic combined process is only 23.2% , indicating the limitation of chroma removal effect of conventional bio-chemical treatment on cotton pulp wastewater. The removal rates of COD and chroma of cotton pulp stock solution wastewater by decoloration flocculation-hydrolysis-aerobic combined process are very remarkable, being a comparatively ideal pretreatment process.
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