Fenton iron sludge biological treatment device and method

The invention belongs to the technical field of Fenton oxidation, and discloses a Fenton iron sludge biological treatment device and method. The device comprises a bioreactor, a first sludge inlet pump, a second sludge inlet pump and a dosing pump, the bioreactor comprises a floc sludge reaction zone, a first fixed filler reaction zone, a second fixed filler reaction zone and a gas-liquid-solid three-phase separation zone which are sequentially arranged from bottom to top. Ferrous ions are recovered while reduction of the Fenton iron sludge is realized, and the use amount of a Fenton reagent is reduced. 本发明属于芬顿氧化技术领域，公开了一种芬顿铁泥生物处理装置及方法。该装置包括生物反应器、第一进泥泵、第二进泥泵和加药泵；所述生物反应器包括从下到上依次设置的絮体污泥反应区、第一固定填料反应区、第二固定填料反应区和气液固三项分离区。本发明在实现芬顿铁泥减量的同时回收亚铁离子，降低芬顿药剂使用量。