| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for treating an agrochemical waste liquid, in which the treatment process for removing agrochemicals is performed efficiently and economically by adjusting the pH value of the agrochemical waste liquid at around 10 (alkalinity) before the conventional treatment process for removing the agrochemicals with a flocculant, active carbon or the like, so as to maintain the pH value of the agrochemical waste liquid within a neutral to weakly alkaline range and thus prevent a decrease in flocculation performance even when a large amount of a flocculant having considerably strong acidity is added thereto. Ž<P>SOLUTION: After the pH value of the agrochemical waste liquid is adjusted at around 10 by adding an alkali agent 13 such as sodium hydroxide thereto, the liquid is brought into contact with flocculants 14, 15, and active carbon 19 to be treated for removing the agrochemicals. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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