| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a technique for treating, with an inexpensive, safe and simple method, sludge such as bottom sludge, raw sludge and digestion sludge generated from sewage treatment plant, etc., or white distilled liquor lees sludge. <P>SOLUTION: Powder of tuffaceous sandstone, andesite, tuff of andesite property and granite, or crushed waste tile, which is problem in treatment, is agitation mixed together with sludge in a mixer to be lowered in water content and also granulated. Then, cement powder is thrown to coat the granulated matter, so that a sludge granulated product is obtained. The obtained product is used for substituting or coating a sludge layer of the bottom of a lake, the bottom of a pond, etc. by throwing-backfilling the product into the bottom of the lake, the bottom of the pond, etc., or used as a soil conditioner or a landfill material. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
