| Title |
Study of Sewage Treatment using Multi-soil-layering System |
| Authors |
손대희 ( Dae Hee Son ) ; 정윤철 ( Yun Chul Chung ) ; 신정훈 ( Jeong Hoon Shin ) ; 정진영 ( Jin Young Jung ) ; 안대희 ( Dae Hee Ahn ) |
| Keywords |
Soil; Zeolite; Slag; Multi-soil-layering system; Nitrogen; Sewage treatment |
| Abstract |
The sewages produced from small villages, rural community, drinking water reservation area and park which doesn`t have sewage piping system can be caused a serious water pollution at the restricted areas. The objective of this research was to suggest an economical and effective sewage treatment method by investigating the removal of the organics, nitrogen, and phosphorus in the multi-soil-layering reactor. Soil, natural zeolite, and iron slag were used as a supporting media of multi-soil-layering in this research. The purpose of natural zeolite addition was to maintain the consistent ammonium exchange capacity by providing a sequential environment, and that of iron slag addition was to remove phosphorus by adsorption. Continuous experiment of lab-scale single-soil-layering (S-1), multi-soil-layering (S-2), and mixed-soil-layering (S-3) methods were studied to compare and optimize three different types of the reactors. The organic removal efficiencies showed more than 90% in all three reactors. While S-1 and S-3 reactors showed about T-N removal of 31%, 45%, respectively, the average T-N removal efficiency of the S-2 reactor represented an 87%. In conclusion, that results suggest that the multi-soil-layering reactor could be effectively utilized as a plant for treatment of small village sewage. |