| Title |
Series Operation of Clarifiers for Selective Separation of Activated Sludge |
| Authors |
정팔진 ( Jeong Pal Jin ) ; 조선영 ( Jo Seon Yeong ) ; 정진필 ( Jeong Jin Pil ) ; 이은주 ( Lee Eun Ju ) |
| Keywords |
Activated sludge; Bulking; Clarifiers; SVI; Settleability |
| Abstract |
A wide variety of research concerning the functions about biological reactor has been performed in many practical area. Besides these functions, a particular interest is the selection of activated sludge which comes into the final clarifiers. It has been found that microorganisms which prevent the setting and it can be controlled with this method. As a result, the influence a bulking can be reduced. On the other hand, bulking controls by microorganisms of selective setting character have been rarely studied at the activated sludges aeration basin. Our present study, is focus to, see how much effective the series operation(S-1) is compared to the parallel(P-1) one by studying the management of the final clarifiers functioning in the two different ways : parallel and series. There were mainly three stage for the operating period. First stage(Run-1 ; was the bulking which is induce, in particular period and the settleability in each reactor was compared at second stage(Run-2) when the sludge bulking was produced. Finally, P-1 and S-1 which is experimented in Run-2 were switched at third stage(Run-3). When microorganisms, which is cause the bulking, grew massively, sludge settleability of S-1 is superior to that P-1. This outcome stemmed from the fact that only by microorganisms, which have a good settleability were returned to the clarifiers of S-1 reactor at the first stage. In addition, although microorganisms grew massively, as well as a good sludge settleability was kept at the second stage because microorganisms, which are the cause of bulking were wasted. |