| 摘要 |
<p>PURPOSE:To suppress actinomycetal scum by the operating method of existing facility without applying a disinfectant or adding a scum eliminator or a bactericidal device, etc., newly for the purpose. CONSTITUTION:In water treating facility constituted of an aeration tank which treats sludge such as sewage, etc., and a final sedimentation basin which separates the sludge from water to be treated, an aeration device is operated intermittently, and also, the sludge is reserviored in the final sedimentation basin by stopping a return sludge pump for the days fixed in advance.</p> |
