洗毛废水中羊毛脂回收与利用的研究

本试验对洗毛废水的几种处理工艺进行了比较,并对酸析离心废水处理工艺及羊毛脂精制工艺进行了最佳条件试验。试验表明:(1)絮凝法、加热酸化法在洗毛废水处理中的CODCr去除率不如酸析离心法高;(2)pH值为3,60℃下,搅拌10 min为酸析法的最佳工艺条件,洗毛废水的CODCr去除率可达80.8%;(3)1:3投加萃取剂苯后,混合时间为60 min,回收羊毛脂的量最大。

Research on wool scouring effluent treatment and refinement of lanolin

To improve wool scouring effluent treatment and quality of lanolin,three methods of wool scouring treatment and lanolin refinement were compared by analyzing such parameters as pH,CODCr,temperature,stirring time and extracting time.Results show:(1) By using method of acid pyrolysis-extraction,the CODCr removal rate is higher than both methods of chemical flocculationextraction and heating acidification;(2) The optimal conditions of wool scouring effluent treatment: pH=3,below 60℃ and 10 minutes stirring time,and the removal rate of CODCr as high as 80.8%;(3) The optimal extracting time: 60 minutes for refinement of lanolin using benzene as extractant.