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Treatment method of stibium-containing wastewater

A waste water and sewage technology, applied in the direction of water/sewage multi-stage treatment, adsorption water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of difficult disposal of sediment residue, secondary pollution, high treatment cost, etc., to achieve The raw materials of the medicine are easy to obtain, the treatment effect is remarkable, and the process is simple.

Inactive Publication Date: 2013-04-03
福建联鑫环境工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although it has many advantages such as simple process, convenient operation, economical and practical, its sedimentation residue is difficult to handle and will cause secondary pollution
(2) The electrolysis method uses platinum group oxides or PbO 2 As an anode to destroy cyanide, and then flocculate, precipitate, and filter antimony ions under the condition of pH=11 to remove antimony, this method consumes a lot of energy, so it has not been widely used in the treatment of antimony-containing wastewater
However, this method is limited by the adsorption capacity of the resin, so it is suitable for treating wastewater with low concentration of antimony, and the resin is easy to be poisoned, and the treatment cost is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0024] The preparation method of described biomass filter material is:

[0025] (1) Take the waste residue produced by the wine industry, add 0.3 to 0.5 times the quality of rice straw, and add sodium carbonate at a ratio of 0.5 to 1 g / kg, and add organic acid at a ratio of 0.2 to 0.5 g / kg;

[0026] (2) Stir and mix well, control dissolved oxygen to 0.1-0.2mg / L, pH=6.5-7.5, temperature at 50-55°C, potential -110--200mV, fully ferment and mature for 6-7 days;

[0027] (3) High-temperature sterilization and crushing treatment, crushing, and sieving to prepare a biomass adsorbent with a mesh number of 120-150 mesh.

example 1

[0029] Take the waste residue produced by the wine industry, add 0.3 times the quality of rice straw, and add sodium carbonate at a ratio of 0.5g / kg, and organic acid at a ratio of 0.2g / kg; stir, mix, and control dissolved oxygen 0.1mg / kg L, pH=6.5, temperature at 50°C, potential -110mV, fully fermented and matured for 6 days; high-temperature sterilization and pulverization, pulverization, and sieving to obtain a biomass adsorbent with a mesh number of 120;

[0030] The antimony-containing wastewater is introduced into the flocculation sedimentation tank, and polyaluminum ferric chloride and sodium metasilicate coagulant are added to carry out flocculation and sedimentation treatment of the suspended particles; the antimony-containing wastewater after removing the suspended particles flows through the biomass filter equipped with the above The effluent is antimony removal wastewater, the antimony concentration in the effluent drops to 0.06mg / L, and the antimony removal rate re...

example 2

[0032] Take the waste residue produced by the wine industry, add 0.4 times the quality of rice straw, and add sodium carbonate at a ratio of 0.75g / kg, and organic acid at a ratio of 0.3g / kg; stir, mix, and control dissolved oxygen 0.15mg / kg L, pH=7.0, temperature at 53°C, potential -115mV, fully fermented and matured for 6 days; high temperature sterilization and pulverization treatment, pulverization, and sieving to obtain a biomass adsorbent with a mesh number of 130;

[0033] The antimony-containing wastewater is introduced into the flocculation sedimentation tank, and polyaluminum ferric chloride and sodium metasilicate coagulant are added to carry out flocculation and sedimentation treatment of the suspended particles; The effluent is antimony removal wastewater, the antimony concentration in the effluent drops to 0.03mg / L, and the antimony removal rate reaches 99.99%.

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PUM

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Abstract

The invention discloses a treatment method of stibium-containing wastewater, which comprises the following steps: taking and weighing waste residue of wine industry, adding 0.3-0.5 time (mass) of straw, and adding sodium carbonate and organic acid respectively according to the ratios of 0.5-1 g / kg and 0.2-0.5 g / kg; uniformly mixing, controlling to ensure the dissolved oxygen content is 0.1-0.2 mg / L, the pH value is 6.5-7.5, the temperature is 50-55 DEG C and the potential is (-110)-(-200) mV, and sufficiently fermenting and aging for 6-7 days; sterilizing at high temperature, pulverizing, and then screening to prepare 120-150-mesh biomass adsorbent; and performing flocculating settling treatment on stibium-containing wastewater, and flowing through an adsorption tower with the biomass filter material prepared in the previous step, wherein the effluent water is stibium-removed wastewater, and the concentration of the effluent water reaches 0.02 mg / L and is lower than the national level-one discharge standard. The invention has the advantages that the method is implemented at normal temperature, no noise is made, the used chemical agent is non-toxic, harmless and non-volatile, no new three wastes are generated in the treatment process, the emulsion can be used circularly, the heavy metal can be recycled, raw materials of the agent are accessible and low in cost, the stibium removal efficiency is up to 99.9% or above and the like.

Description

technical field [0001] The invention relates to a treatment method for antimony-containing wastewater, in particular to a treatment process for antimony-containing wastewater produced in the industry of refining antimony from nonferrous metals, and belongs to the field of wastewater treatment in environmental protection. Background technique [0002] In recent years, antimony has been widely used in the non-ferrous metal industry, and the antimony-containing wastewater discharged from factories is the main source of antimony pollution in water bodies. For example, the wastewater discharged from the smelting industry and military production (the content of antimony is about 0.065mg / L), and the wastewater discharged from the process of producing sulfuric acid from sulfuric acid ore, and the production of phosphate fertilizer from phosphate rock (the content of antimony is as high as 0.089mg / L), etc. Pollution is particularly serious. Therefore, the effective treatment of anti...

Claims

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Application Information

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IPC IPC(8): C02F9/04C02F1/52C02F1/28C02F101/20
Inventor 汪巍
Owner 福建联鑫环境工程有限公司
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