【摘要】 应用离子束为诱变因素,对活性污泥进行辐照处理,研究经驯化培育后,处理一定浓度的焦化废水的结果表明:活性污泥的性能及数量的评价指标、生化指标、污泥增长率以及与污染负荷等有明显的变化,经离子束照射处理后活性污泥的SV30值为11.0%~14.0%,SVI值为34.97~42.02 mL/g,辐照后的活性污泥SVI值低于未辐照活性污泥的SVI值,MLSS值在2 940~3 515 mg/L,污泥增长率变化范围为17.17%~-2.00%,最佳CODcr去除率为92.17%,最佳氨氮去除率可达到94.64%,挥发酚去除率效果最好,可达到99.83%,处理效果优于未辐照前。更多还原

【Abstract】 The activated sludge was induced by ion beam irradiation with various irradiation dosage in order to treat the coke-plant wastewater.The experiment results show that the performance of the activated sludge was improved.After the irradiation,the 30-min settled sludge volume(SV30) was between 11.0% and 14.0%,the sludge volume index(SVI) was between 34.97 mL/g and 42.02 mL/g,which was lower than that by no irradiation,the concentration of mixed liquor suspended solids(MLSS) was between 2 940 mg/L and 3 515 mg/L,and the increasing rate of sludge ranged from-2.00% to 17.17%.The optimal removal efficiency of CODcr,NH3-N,and volatile phenol was 92.17%,94.64% and 99.83% respectively,which was much better than that before irradiation.更多还原