| 摘要 |
<p>PURPOSE:To considerably economize the labor required for controlling the characteristics of supplied sewage by adding dust collecting water contg. at least one of metals to constitute the living bodies of microorganism to a waste liquid. CONSTITUTION:The dust collecting water contg. at least one of the metals (e.g.; Ca, K, etc.) to constitute the living bodies of the microorganisms is added at >=7.5% to the waste liquid. As a result, the activity of the microorganisms in a biological sewage treatment process is increased. The labor required for controlling the characteristic of the supplied sewage of this process is, therefore, considerably economized and the high sewage cleaning capacity of said process is maintained.</p> |
