| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an economical and efficient drain treatment agent capable of indiscriminatingly reducing the concentrations of fluorine, boron, arsenic and lead, which are harmful substances contained in a drain produced when a bottom sediment is subjected to cleaning treatment, below the drain rule. <P>SOLUTION: The bottom sediment cleaning drain treatment agent contains (A) calcium aluminate, (B) aluminum sulfate, (C) lime, and (D) an alkaline metal phosphate salt. <P>COPYRIGHT: (C)2013,JPO&INPIT |
