| 摘要 |
PROBLEM TO BE SOLVED: To facilitate to repair such that few malodor drifts in a periphery or none does even for existing amalgamation septic tank equipment being actually used.SOLUTION: A negative ion generator 26 is disposed at an outside of a contact aeration tank 9 in amalgamation septic tank equipment, a wiring inserting part 22 is disposed for an air supply pipe 8 that sends air into the contact aeration tank 9 at an outside of the contact aeration tank 9. A wiring 27 for a discharge electrode that connects a discharge electrode 28 with the negative ion generator 26 is derived into the contact aeration tank 9 from the wiring inserting part 22 via an inside of the air supply pipe 8, and the discharge electrode 28 mounted at a tip of the wiring 27 for a discharge electrode is disposed in sewage in the contact aeration tank 9. |
