| 摘要 |
PROBLEM TO BE SOLVED: To provide a treatment method for refractory material-containing waste water which is capable of decomposing refractory materials, such as environmental hormones as represented by dioxins, bisphenols A and co-PCBs even in high-concentration SS-containing waste water, does not allow the refractory materials to remain in sludge and treated water and minimizes a floor area. SOLUTION: This waste water equipment has a treating vessel 10 for oxidatively decomposing the refractory materials included in the waste water 1 by combination of >=1 among oxidizing agents, such as ozone 14a or hydrogen peroxide 15 or the like, and irradiation with UV rays 19. The equipment is provided with a solid-liquid separator 11 by membrane separation behind the treating vessel 10 and has a return line of at least the portions of the solid content 3 discharged from the solid-liquid separator 11 to the decomposing treatment means. Dioxin cracking equipment 20 for the discharged solid content is interposed on a line for feeding the discharged solid content 3b to a dehydrator 12 on the downstream side from the branch point of the return line to dehydrate the discharged solid content 3D by the dehydrator 12. |
