洗毛废水蒸馏处理塔中污泥的改性及其对污泥脱水效果的影响
收稿日期: 2004-09-24
修回日期: 2004-09-24
网络出版日期: 2010-10-01
基金资助
江苏省自然科学基金重点项目;编号:BK2004213
Modification of the condensed sludge from the woolscouring wastewater distilling tower and its effect on the sludge dewaterability
Received date: 2004-09-24
Revised date: 2004-09-24
Online published: 2010-10-01
何锋, 周立祥 . 洗毛废水蒸馏处理塔中污泥的改性及其对污泥脱水效果的影响[J]. 工业水处理, 2005 , 25(1) : 25 -28 . DOI: 10.11894/1005-829x.2005.25(1).25
The woolscouring condensed sludge derived from the woolscouring wastewater-distilling tower is charac-terized by a higher amount of organic matter and plant nutrients, having heating value. But it is difficult to dispose and reutilize the sludge properly because it contains a great deal of lanoline, alkalinity, and viscidity. In the light of the principles of the surfactant emulsification and demulsification, the combined approaches to treat the woolsouring condensed sludge, including the addition of chemical acid, flocculant, and demulsifier under optimum reaction temperature have been used. The results show that the stability and emulsification of the sludge are destroyed effectively through the above approach. The resistance rate of the sludge is decreased from 9.81 × 1013 m/kg to 2.48 × 1011 m/kg. Consequently, the mechanical dewatering of the sludge could be performed easily, provides a brand new pretreatment process for the reutilization of woolscouring sludge.
Key words: woolscouring wastewater; sludge modification; dewaterability
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