| 摘要 |
<p>PURPOSE:To effectively prevent the emission of an offensive odor due to the decomposition of dirty water in a drainage tank by selecting and operating an aerator so as to regulate the concn. of dissolved oxygen in the dirty water in the tank or the oxidation/reduction potential of the water to a prescribed value. CONSTITUTION:An aerator 3 having the irreducible min. capacity required to regulate the concn. of dissolved oxygen (DO) dirty water flowing into a miscellaneous drainage tank 1 to >=0.8mg/l or the oxidation-reduction potential (ORP) of the water to >=-100mV is selected and continuously operated with an underwater motor 4. Since the aerator 3 is selected and operated, the emission of an offensive odor due to the decomposition of the dirty water in the tank 1 can be effectively prevented with small consumption of electric power.</p> |
