PERFORMANCE OF ROTARY DISK MODULES IN A COLLECTED HUMAN EXCRETA TREATMENT-PLANT

The tubular type and plate-and-frame type are two conventional kinds o f membrane modules used for collected human excreta treatment, However , such modules are hindered by high power consumption, blocking of the membrane by fiber components, the need for frequent cleaning and othe r such problems. Here, the authors investigated the performance and st ability of a collected human excreta treatment plant utilizing rotary disk modules developed for the separation of highly concentrated liqui d. As a result, it was found that, whether treating activated sludge o r coagulated sludge, continuous operation over more than six months ca n be achieved at a low power consumption and without chemical cleaning . By this the authors have shown that rotary disk modules can be appli ed to the treatment of highly concentrated residential wastewater.