| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide improvement of sludge quality by reducing tendency to bulking of sludge. <P>SOLUTION: The improvement is solved by using a non-oxidizing water-soluble biocide containing an alkyl-substituted phosphonium compound, alkyl-substituted phosphine, alkyl-substituted phosphine condensate, or polymeric quaternary ammonium compound. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
