Development of a treatment system combining a biofilm process with a ceramics carrier and a soil filter
2002
Wakiya, Y. (Saga-ken. Animal Husbandry Experiment Station, Imari (Japan)) | Sakai, T.
To confirm the performance of a swine wastewater treatment system, the combination of a Biofilm Process with a ceramics carrier and a filter with Andsoil, Isolite and Zeolite was researched. The results showed that the concentration of each composition in wastewater from swine was decreased, but as the water cooled and the BOD volume load increased, the purification ability was lowered. Particularly, when the water was 15degC or lower and BOD volume loading was 0.5kg/cube m/ per day, the concentration of BOD composition in the treated wastewater was increased. In spite of these findings, high levels of purification of BOD and nitrification were demonstrated, and still nothing of the sludge adjustment, a stable biomass was confirmed. These findings indicated that the Biofilm Process with the ceramic carrier was easier to maintain than the Activated-Sludge Process in the case of no dilution. The findings also demonstrated year-round stable purification using the combined soil filter.
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