| 摘要 |
PURPOSE: A filtration system combined with a septic tank is provided, which is characterized in that the system can purify secondarily wastewater and excreted wastes with 20ppm of BOD treated firstly from the septic tank. CONSTITUTION: A filtration system combined with a septic tank consists of the following parts: a main tank(1) equipped with an inlet(11) at an upper side, an outlet(12) at the other upper side and a bottom board(4) at the bottom; an inner pipe(2); a filtration device(3) equipped with a first filter(31) composed of JE-EP filter layers, a second filter(32) of activated carbon and a third filter(33) of hempen filters(34,36,38); a forth filter composed of send layers; a storage chamber(5); a filter pipe(6); a baffle wall(7); an upper cover(8); a pipe(10) connected from an ozonizer; and overlap pipes shaped U to collect maximally fine sludge. The system can purify secondarily wastewater and excreted wastes treated firstly from the septic tank, from 20ppm to 5.6ppm of BOD. |
