A New Fixed-Film System Covered by Surface Soils,
FORESTRY AND FOREST PRODUCTS RESEARCH INST IBARAKI (JAPAN)
Pagination or Media Count:
The acceptance of a new fixed-film system covered by surface soils have been in progress last ten years for the treatment of a wide-range of low and high strength of biological wastewater, because in its very simple process removal rate of BOD, COD, total nitrogen and SS are extremely high with very few sludge production and few input of particular energy, and without daily operation and maintenance effort and skill, in the same area of the conventional wastewater treatment processes. The prototype of this system with the name of Do Joker System DJS came from studies of drain field which we call trench and has been very common in the United States. A DJS is a valuable and successful experiment which has displayed the possibility of solving many problems of biological wastewater treatment by the fixed-film biological processes. If a DJS could be added to after any wastewater treatment processes in question or such processes were converted to DJS, the situation concerned will undoubtedly be much improved. Mathematical modeling has been under way but this model must be different much from the conventional ones in that instead of solving at the expense of creating new problems, all problems of internal and external environments must be solved towards increasing overall stability with healing process in an automatic way.