CAJ | 학술논문

以聚合氯化铝(PAC)和聚丙烯酰胺(CPAM)为絮凝剂,对造纸法烟草薄片废水进行絮凝预处理.以絮凝剂用量和p H值为影响因素,以COD和色度去除率为响应值,采用中心组合实验设计和响应面法建立了COD和色度去除率的响应面方程.通过对数学模型进行求解,可知在PAC用量为715mg/L、CPAM用量为4.8mg/L和pH值为6.5的条件下,COD和色度去除率可同时达到最大值,分别为67.8%和77.7%.验证实验结果表明,响应面法的预测值与实验值吻合较好,建立的模型具有较高的可信度,响应面法是一种有效的优化废水絮凝条件的方法,为烟草薄片废水的优化絮凝处理提供了一定的理论依据.
이취합록화려(PAC)화취병희선알(CPAM)위서응제,대조지법연초박편폐수진행서응예처리.이서응제용량화p H치위영향인소,이COD화색도거제솔위향응치,채용중심조합실험설계화향응면법건립료COD화색도거제솔적향응면방정.통과대수학모형진행구해,가지재PAC용량위715mg/L、CPAM용량위4.8mg/L화pH치위6.5적조건하,COD화색도거제솔가동시체도최대치,분별위67.8%화77.7%.험증실험결과표명,향응면법적예측치여실험치문합교호,건립적모형구유교고적가신도,향응면법시일충유효적우화폐수서응조건적방법,위연초박편폐수적우화서응처리제공료일정적이론의거.
A coagulation–flocculation process was used to treat papermaking-reconstituted tobacco slice wastewater with polyaluminium chloride (PAC) as coagulant and cationic polyacrylamide (CPAM) as flocculants. To minimize chemical oxygen demand (COD) and color of the wastewater, the experiments were carried out using jar tests and response surface methodology (RSM) was applied to optimize this process. A central composite design, which is the standard design of RSM, was used to evaluate the effects and interactions of three factors, i.e. PAC dosage, CPAM dosage and pH on the treating efficiency. The optimal conditions obtained from the compromise of the two desirable responses, COD removal rate and color removal rate, were PAC dosage of 715 mg/L, CPAM dosage of 4.8 mg/L and pH 6.6, respectively. Under the optimal conditions, the maximal COD removal rate (67.8%) and the maximal color removal rate (77.7%) could be achieved. The RSM was demonstrated as an appropriate approach for the optimization of the coagulation–flocculation process by confirmation experiments.