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Preface
Table
of Contents
Foundation
Hybrid
Lagoon System
Case
Study
Applications
Proposals
2. Basic Construction and Characteristics of the Continuous Activated Sludge Treatment Method.
In the continuous activated sludge treatment method, by separating the reaction basin (A) and sedimentation basin (B), designing aeration basins and final precipitation basins suitable to perform the functions of the former, it is possible to design a system in accordance with given drainage characteristics. Further, this is a continuous treatment method in which regulation of returned sludge (C) enables control of the microorganism concentration and wastewater residence time in the aerator basin.
This continuous activated sludge method is far superior to the irrigation, putrefaction, trickling filter and other methods in use till now, as it offers greater efficiency of drainage and an improvement in the quality of treated water. Moreover, in addition to the standard activated sludge method, a large number of derivative methods have also been developed, including the high load method, extended period method, contact aeration method, oxidation ditch method and aeration lagoon method.