Circulating iron-carbon reduction reactor

Abstract

The invention discloses a circulating iron-carbon reduction reactor and solves the problem that an aeration stirring type iron-carbon reduction reactor has poor decomposition treatment effect due to insufficient contact with iron-carbon filler. A water outlet cavity, a reaction cavity, a water inlet cavity and a precipitation cavity are formed in a reaction tank from top to bottom sequentially, and the reaction cavity is filled with the iron-carbon filler; a water inlet pipe, a water outlet pipe and a sewage discharge pipe are arranged in positions, corresponding to the water inlet cavity, thewater outlet cavity and the precipitation cavity, of the reaction tank respectively; a water return head is arranged at the lower part of the water outlet cavity and communicated with a water inlet end of a power water pump through a circulating water return pipe; a water spraying head is arranged in the water inlet cavity, and the water outlet end of the power water pump is communicated with thewater spraying head through a de Laval nozzle and a circulating water outlet pipe. According to the reactor, waste water after the iron-carbon reduction reaction is pumped back again, sent into the de Laval nozzle to increase the flow speed, and then sent to the water spraying head to be sprayed out, so that the contact speed and contact times between the waste water and the iron-carbon filler are further increased, and the iron-carbon decomposition treatment effect is improved.

Description

technical field [0001] The invention relates to equipment for treating waste water or sewage with an electrochemical method, in particular to a circulating iron-carbon reduction reactor. Background technique [0002] We know that the nitrobenzene pollutants contained in wastewater are difficult to degrade through a single biological method. People usually use weak currents spontaneously generated by iron and carbon elements to decompose them to improve the biodegradability of wastewater. [0003] Most of the existing iron-carbon reduction reaction devices use conventional aeration-stirring iron-carbon reduction reactors, which are equipped with an aeration and stirring mechanism at the lower part of the iron-carbon filler to increase the contact between the waste water and the iron-carbon filler. During the process, it was found that the use of an aeration mixer: first, the introduction of oxygen; second, the waste water once passed through the iron-carbon filler still has t...

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Problems solved by technology

[0004] In order to overcome the deficiency that the existing aeration and stirring iron-carbon reduction reactor has insufficient contact with iron-carbon filler and poor decomposition treatment effect, the present invention provides a reactor with reasonable design, sufficient contact with iron-carbon filler, and good decomposition treatment effect Circulating Fe-Carbon Reduction Reactor

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