| 摘要 |
<p>PURPOSE:To enhance treatment efficiency of development waste liquid by regulating the pH in a treatment tank of development waste liquid to a specified range and also allowing an insoluble inorganic compd. to exist. CONSTITUTION:Development waste liquid contg. tetramethylammonium hydroxide (hereinafter referred to as TMAH) as an essential component is introduced into a treatment tank of activated sludge. Then its pH is regulated to 6-7.5 by adding an acid or alkali agent, and while maintaining it, an insoluble inorganic compd. such as calcium phosphate and aluminum sulfate is added, and the mixture is subjected to aeration treatment. Thereby resin content is efficiently removed and the quality of treated water can be enhanced.</p> |
