| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a method for aerobic biotreatment of org. waste water which hardly generates excess sludge by a simple treating means. SOLUTION: In a method wherein after an org. waste water 5 is treated by an aerobic biotreatment 1, a part of the sludge obtd. is treated by solubilization treatment 3 and is returned to the aerobic biotreatment process 1 and is treated there, the solubilization treatment 3 is performed either by a pulse discharge treatment process 4 or by an acidic oxidation treatment process using an acidic oxidizer and an alkali treatment process using an alkali agent and the pulse discharge treatment process and as the acidic oxidizer and the alkali agent, an acidic oxidized water and an alkaline water obtd. by membrane electrolysis of a salt water can be used and the acidic oxidation treatment process and the alkali treatment process are provided in parallel or in series and they comprises respectively of a single or a plurality of processes, and a pulse discharge treatment process can be provided before or after these series of acid and alkali treatment processes.</p> |
