WASTEWATER TREATMENT APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a wastewater treatment apparatus which can remarkably improve use efficiency of ozone and increase treatment efficiency by improving injection efficiency of ozone in an ozone injection means and recycling waste ozone discharged from the top of a treatment tank. SOLUTION: The ozone injection means for injecting ozone into the treatment tank 11 into which raw water flows has a gas-mixing jet pump 16 using the raw water as a driving fluid. An ozone supply passage 27 for supplying ozone from an ozone source is connected to the gas inflow part 23 of the gas-mixing jet pump, and an ozone circulation passage 15 for circulating the waste ozone discharged from the treatment tank 11 is connected to the suction part of the gas-mixing jet pump. COPYRIGHT: (C)2006,JPO&NCIPI