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Method for continuously treating heavy metal liquid

A heavy metal, liquid technology, applied in chemical instruments and methods, adsorption water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of secondary pollution of heavy metals, low efficiency, high energy consumption, etc.

Active Publication Date: 2015-08-19
陕西厚亿节能环保新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for continuous treatment of heavy metal liquids, which solves the technical problems of low efficiency, high energy consumption, poor stability, easy to cause secondary pollution and inability to separate heavy metals in the existing methods of processing heavy metal-containing liquids

Method used

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  • Method for continuously treating heavy metal liquid
  • Method for continuously treating heavy metal liquid

Examples

Experimental program
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Effect test

Embodiment 1

[0065] The nickel-containing acid wastewater of the smelter, according to the fluctuation of the production process, the nickel content is 30mg / L-200mg / L, the nickel-containing wastewater flows into the sedimentation tank, and the COD and solid particles in the wastewater are rapidly coagulated and precipitated by the coagulation sedimentation method. Reduce the COD to less than 50mg / L, and the total solid content to less than 50mg / L, and transport it into the wastewater buffer tank; the wastewater in the wastewater buffer tank is transported through the pump, and flows into the pH filter through the filter. 1 Electrode wastewater pH adjustment tank: if the pH of the nickel-containing wastewater in the pH adjustment tank is 4.5≤pH 1 ≤9, it flows into the adsorption column; if the pH of the nickel-containing wastewater in the pH adjustment tank 1 1 >9, then stop entering the adsorption column, and use the newly influent acidic wastewater to mix with the nickel-containing wastew...

Embodiment 2

[0083] What is different from Example 1 is that there is no pre-washing area of ​​the pre-washing process in the continuous adsorption process in this embodiment, the regeneration area is a four-column series operation, and the pipeline connection of the regeneration area is: 0.5mol / The ammonia water of L is connected to the panel valve hole A9, flows to the water inlet valve hole C9 of the fixed plate through the pipeline, passes through the fixed plate and the rotating plate, flows out from the water outlet valve hole E9 of the rotating plate, and flows into the adsorption column from the water inlet of the adsorption column 9 through the pipeline Inside. Ammonia water regenerates the silica gel-loaded polymeric amine in the adsorption column to meet the adsorption material, and the regenerated liquid flows out of the water outlet of the adsorption column 9, flows into the water inlet valve hole F9 of the rotating disk, penetrates the fixed disk and the rotating disk, and fl...

Embodiment 3

[0085] The copper-containing acid wastewater of the copper foil factory, according to the fluctuation of the production process, the copper content is 100mg / L~600mg / L, the copper-containing wastewater flows into the sedimentation tank, and the COD and solid particles in the wastewater are rapidly coagulated and precipitated by the coagulation sedimentation method , the COD will be reduced to below 50mg / L, the total solid content will be reduced to below 50mg / L, and it will be transported into the waste water buffer tank; the waste water in the waste water buffer tank will be pumped through the filter and flow into the pH 1 Electrode wastewater pH adjustment tank: if the pH of the copper-containing wastewater in the pH adjustment tank is 1≤pH 1 ≤3, it flows into the adsorption column; if the pH of the copper-containing wastewater in the pH adjustment tank 1 1 >3, then stop entering the adsorption column, and adjust the pH by mixing the newly flowing acidic wastewater with the c...

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Abstract

The invention discloses a method for continuously treating heavy metal liquid. The method comprises the following steps: firstly, pre-treating the heavy metal liquid to enable the heavy metal liquid to meet the water inlet requirements of equipment; secondly, processing the heavy metal liquid by using a continuous adsorption process, namely continuously operating a plurality of process areas in sequence through the rotation of adsorption columns; finally, after-treating the wastewater of each process area, and separating and recycling heavy metal. According to the method, multi-adsorption column and multi-process continuous operation is carried out, and fully-automatic control, simple operation and stable running are realized; the treatment process flow can be flexibly changed, and the method is applied to process change caused by external fluctuation; the operation flow speed is high, the regeneration cycle period is short, and metal ions in a water body are efficiently adsorbed, separated, enriched and recycled; in addition, compared with a conventional fixed bed process, the method has the advantages that the filling quantity of adsorption materials, the consumption of washing water, the consumption of a desorption agent and the consumption of a regeneration agent are reduced, and the operation cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of heavy metal-containing liquid treatment, in particular to a method for continuously treating heavy metal liquid. Background technique [0002] While the progress of society and the improvement of productivity have accelerated the development of industrialization, it has also led to a sharp increase in industrial pollutant discharge, and a large amount of heavy metal pollutants have been discharged into the environment, causing serious harm to the ecological environment. Heavy metals can accumulate in the environment and cannot be degraded by microorganisms. No matter what method is used, they can only transfer the location of heavy metal ions or change their physical and chemical forms, but cannot decompose and destroy heavy metal ions. Therefore, heavy metal ions are a kind of permanent pollutants in the environment, and most of them are highly toxic substances that are carcinogenic, teratogenic, and mut...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/28C02F101/20
Inventor 陈博烟小亿
Owner 陕西厚亿节能环保新材料科技有限公司
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