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JP2003001238A Method and device for washing soil 有权
标题翻译：洗涤土壤的方法和装置
公开(公告)号：JP2003001238A
公开(公告)日：2003-01-07
申请号：JP2001188812
申请日：2001-06-21
申请人： Japan Steel & Tube Constr Co Ltd , 日本鋼管工事株式会社
发明人： MATSUO ATSUSHI , KOSUGI TAKASHI , SATO KIMIO
IPC分类号： B09C1/00 , B01D21/01 , B09C1/04 , C02F1/24 , C02F1/52 , C02F1/56 , C09K17/04 , C09K17/14 , C09K17/48 , C09K101/00
摘要： PROBLEM TO BE SOLVED: To provide a method and a device for washing soil which reduces treatment cost when the soil washing is performed and alleviates the difficulty of treatment of contaminated water which is exhausted thereupon when the soil washing is performed.
SOLUTION: Soil which is contaminated by a hardly water-soluble organic substance, washing water for washing soil and a nonionic interfacial active agent are charged into a mixer 4 and are mixed, the mixed liquid is stirred and, thereby, the soil is washed. Subsequently, the mixed liquid after washing is transferred into a bubble bath 6, is supplied with air bubbles and is separated to an oily material layer which includes the hardly water-soluble organic substance, a contaminated water layer and a soil layer and, from the respective layers, the oily material which includes the hardly water-insoluble organic substance, contaminated water and soil are respectively recovered. Then, a bivalent iron salt and/or trivalent iron salt as well as a polymer coagulant are added to the recovered contaminated water, are mixed and are transferred to a coagulating and settling tank 13. Further, in the coagulating and settling tank 13, the contaminated water is stirred, thereafter, is left standing, is separated to the concentrated contaminated soil and waste water, which are recovered respectively.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供一种洗涤土壤的方法和装置，其在进行污物洗涤时降低处理成本，并且减轻了执行污垢洗涤时排出的污染水的难处理。解决方案：将由几乎难溶的有机物质污染的土壤，洗涤土壤的洗涤水和非离子界面活性剂加入到混合器4中并混合，搅拌混合液体，从而洗涤土壤。随后，将洗涤后的混合液转移到气泡浴6中，供给气泡，并分离成包含难溶于水的有机物质，污染水层和土壤层的油性物质层，分别回收了包含难溶于水的有机物质，被污染的水和土壤的油层物质。然后，将二价铁盐和/或三价铁盐以及聚合物凝结剂加入到回收的污水中，混合并转移到凝结沉淀池13中。此外，在凝结沉淀池13中，受污染的水被搅拌，然后静置，分离成浓缩的污染土壤和废水，分别回收。

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