试验研究

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

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  • 南京农业大学资源环境学院环境工程系, 江苏 南京 210095
何锋(1978- ),2001年毕业于南京农业大学,现为南京农业大学环境工程系在读博士研究生,主要从事污水污泥的处理和利用的研究.

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

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  • College of Resources and Environmental Sciences, Department of Environment Engineering, Nanjing Agricultural University, Nanjing 210095, China

Received date: 2004-09-24

  Revised date: 2004-09-24

  Online published: 2010-10-01

摘要

洗毛废水蒸馏后形成的污泥虽含较多的有机质和植物养料,也具有很高的热值,但由于富含羊毛脂,黏度高、碱性强、极难脱水,极大地限制了它的资源化利用。根据污泥体系中表面活性剂的乳化作用与破乳的基本原理,通过采用酸化、投加凝聚剂、破乳剂和调节适当反应温度等联合方法,有效地破坏了供试污泥分散体系固有的稳定性,改性后污泥的比阻值R从改性前的大于9.81×1013m/kg下降为2.48×1011m/kg,从而使污泥极易机械脱水。为洗羊毛污泥的资源化利用提供了一个全新的预处理工艺。

本文引用格式

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

Abstract

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.

参考文献

[1] 王杰,肖锦,詹怀宇.两性高分子絮凝剂在污泥脱水上的应用研究[J].工业水处理,2000,20(8):28-30
[2] 赵庆祥.污泥资源化技术[M].北京:化学工业出版社,2002.7-8
[3] 蒋木庚,杨红.有机分析[M].南京:南京大学出版社,1996.20~25
[4] 杜仰民,马华继,张建民,等.洗毛废水处理与资源回收利用[J].工业水处理,2000,20(7):16-18
[5] William Jones F, Westmoreland David J. Degradation of nonylphenol ethoxylates during the composting of sludge from woolscour effluent[J]. Environ. Sci. Technol., 1998, 32(17): 2 623-2 627
[6] Maheswaran Jay, et al. Potential for agri-industry wastes as soil ameliorants[R]. Progress report RIRDC project No RMI-10A, Melbourne, Austrilia, 1998
[7] Stokes Josephine, Justine Cody, Jay Maheswaran. A long-term study into compost applications for broadacre cropping[J]. Geelong,Victoria. Australian Society of Agronomy, 2003,2 (1): 2 - 6
[8] Williamson H W M, Greenfield L G, Beare M H. Biodegradation assessment of woolscour sludge and fellmongery sludge[J]. J. Environ. Qual., 2000,29(6): 1 998-2 006
[9] 许闽明.厌氧-气浮-A/O接触氧化工艺处理洗毛废水[J].工业水处理,2003,23(2):56-58
[10] 张国浦.生物接触氧化法处理洗毛废水[J].湿法冶金,2001,20(2):96-99
[11] 鲁玉龙.洗毛废水处理工艺现状及技术探讨[J].环境保护,2002,(2):20-21

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