Integrated fluidized bed iron oxide microcrystal generator and water treatment reactor

Abstract

The invention discloses an integrated fluidized bed iron oxide generator and water treatment reactor. The device includes: a reaction zone, which is columnar; a precipitation zone, which is disposed outside the reaction zone, has bottom openings communicated with the reaction zone, and has an inclinedly disposed bottom; and a guide cylinder, which is arranged at the lower part inside the reactionzone, has a central axis coincident with that of the reaction zone, and in which stirring blades are disposed and are connected to a stirrer through a connecting rod. The device provided by the invention has the beneficial effects that: (1) the medium fluidization reaction zone and the solid-liquid separation precipitation zone are in integrated design, thus saving space and also lowering the production cost; (2) the medium fluidization reaction zone can efficiently fluidize high concentration and high proportion iron powder and ferrite medium; and (3) the precipitation zone can efficiently intercept the ferrite medium for reutilization, at the same time ensures that the effluent suspended matter concentration maintains a low level, thus guaranteeing the quality of the treated water.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to an integrated fluidized bed ferrite microcrystal generator and a water treatment reactor. Background technique [0002] (1) The problem of heavy metal pollution in wastewater [0003] Coal-fired power plant wet flue gas desulfurization wastewater often contains many types and forms of heavy metal pollutants, and the high salt background of wastewater greatly increases the difficulty of treatment. As another example, the concentration of heavy metals (such as nickel, chromium, zinc) in electroplating workshop wastewater often exceeds 1000 mg / L, while the latest standard (Table 3 Standard for Electroplating Wastewater) requires nickel <0.1mg / L, which requires wastewater treatment systems To achieve a removal rate of more than 99.99%. The traditional chemical neutralization flocculation sedimentation method is difficult to achieve such a high removal rate, and the treat...

AI Technical Summary

Problems solved by technology

However, the practical application in industry is still limited, especially in the treatment of various difficult wastewater, and the simple adsorption of iron oxide on the surface is not particularly effective for many heavy metal ions

[0009] All in all, the traditional chemical flocculation precipitation method, including the newer zero-valent iron technology, and various electrochemical methods used to treat industrial wastewater polluted by heavy metals generally cannot meet the increasingly stringent national and local environmental protection discharge standards

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