Cyanide-containing waste water treatment process

Abstract

The invention discloses a cyanide-containing waste water treatment process which includes the steps that cyanide-containing waste water is sequentially treated by an adjusting tank, a first-stage flocculation tank, a second-stage flocculation tank, a sedimentation tank and a filtering tank and then discharged. An alkali adding process is arranged between the adjusting tank and the first-stage flocculation tank, an acid adding process is arranged between the first-stage flocculation tank and the second-stage flocculation tank, a flocculating agent adding process is arranged between the second-stage flocculation tank and the sedimentation tank, and fillers in the filtering tank are helical stacked filtering materials. The cyanide-containing waste water treatment process is simple in process, good in treatment effect, simple in operation and capable of saving energy consumption, the novel helical stacked filtering materials are used as the fillers for the filtering tank, according to the fillers, a membrane is easy to form, and the filters are light.

Description

technical field [0001] The invention belongs to the field of wastewater treatment, and in particular relates to a process for treating cyanide-containing wastewater. Background technique [0002] Cyanide is a highly toxic substance. With the development of industrialization, many production wastewaters contain high levels of cyanide, which must be treated effectively before being discharged into the sewer. [0003] Generally, the treatment methods of cyanide-containing wastewater are ordinary alkaline chlorination, electrolysis, ion exchange and activated carbon. Although the treatment method is relatively simple, the treatment efficiency is not high, and it can only be treated for wastewater with low cyanide content. Contents of the invention [0004] In order to overcome the deficiencies in the prior art, the object of the present invention is to propose a cyanide-containing wastewater treatment process, which solves the problem of low cyanide content treatment efficien...

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Problems solved by technology

[0004] In order to overcome the deficiencies in the prior art, the object of the present invention is to propose a process for the treatment of cyanide-containing wastewater, which solves the problem that the treatment efficiency of cyanide content in the process for the treatment of cyanide-containing wastewater in the prior art is not high.

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