【摘要】 针对染织废水脱色难的问题,筛选出了两株具有高絮凝活性的菌株(分别记作7#和9#),经鉴定其分别为产碱杆菌属和葡萄球菌属。采用这两株菌处理染织废水,结果表明:7#和9#菌株的最适培养时间分别为2.5d和5d;最适菌剂投量分别为3.0mL/100mL废水和2.5mL/100mL废水;1%的CaCl2最适投量为2.0mL/100mL废水;絮凝时废水的pH值宜控制在7.0～8.0。在最优絮凝条件下对COD的去除率>20%,对色度的去除率>96%。更多还原

【Abstract】 Aimed at the difficult color removal from printing and dyeing wastewater,two high flocculation activity strains No.7 and No.9 were screened and identified as Alcaligenes and Staphylococcus respectively.The two strains were used to treat printing and dyeing wastewater.The results show that the optimal culture periods of two strains are 2.5 d and 5 d respectively;the optimal bacteria dosage is 3.0 mL/100 mL and 2.5 mL/100 mL;the optimal dosage of CaCl2(1%)is 2.0 mL/100 mL and the optimal flocculation pH is 7.0 to 8.0.Under the optimal flocculation conditions,the removal rates of COD and color exceed 20% and 96% respectively.更多还原