Method and device for modular programmed treatment of heavy metal waste liquid

Abstract

The invention provides a method and device for modular programmed treatment of a heavy metal waste liquid so as to solve the problems that existing heavy metal waste liquid treatment devices occupy large floor space, the process is long, the operation is complicated, the control is tedious and the effluent water quality is not up to the standard. The device for modular programmed treatment of a heavy metal waste liquid consists of: a pretreatment system, a comprehensive reaction system, a cache system, a solid-liquid separation system, an observation system, a drug adding system and a modular programmed system. After the heavy metal waste liquid enters the device, batch treatment is carried out according to set parameters of modular programmed equipment, water feeding, drug adding, water discharge and online detection are automatically controlled, and the effluent water can meet the national discharge standard. The device for modular programmed treatment of the heavy metal waste liquid provided by the invention has the advantages of small floor space, simple process, strong applicability, simple operation, easy control, low operation cost, good treatment effect, wide application range, and easy popularization and use in projects.

Description

technical field [0001] The invention relates to an integrated automatic treatment method and device in the field of water treatment, in particular to a modular program-controlled treatment method and device for heavy metal waste liquid. Background technique [0002] In the field of water treatment, waste liquid containing heavy metal ions is extremely harmful to the environment and human beings, and must be treated before it can be discharged. Among the heavy metal waste liquid treatment methods, the chemical method has a large amount of waste liquid, a wide range of treatment, and a relatively mature process, which is suitable for the treatment of high-concentration waste liquid. However, the existing classic chemical precipitation method - hydroxide precipitation method to treat waste liquid containing heavy metal ions is to add alkaline solution to the heavy metal waste liquid to form intolerant heavy metal oxides to remove heavy metal ions. Due to the pH value of the was...

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Problems solved by technology

[0004] The invention provides a method and device for modular program-controlled treatment of heavy metal waste liquid, which solves the problems in the prior art that the heavy metal waste liquid treatment process is long, the equipment occupies a large area, the operation is complicated, the control is cumbersome, and the effluent water quality does not meet the standard.

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