Adsorbent composition for removing heavy metal ions in industrial wastewater

A technology for heavy metal ions and industrial wastewater, applied in the direction of water pollutants, adsorption water/sewage treatment, water/sewage treatment, etc., can solve the problems of recycling and high operating costs, short service life, large adsorption capacity, etc., to achieve excellent Adsorption function, low cost, and high adsorption efficiency

Active Publication Date: 2018-05-04
重庆精创联合环保工程有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Activated carbon is non-selective and can adsorb a variety of heavy metal ions at the same time. It has a large adsorption capacity, but its cost is high, its service life is short, and its recycling and operating costs are high.

Method used

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  • Adsorbent composition for removing heavy metal ions in industrial wastewater

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0037] In the present embodiment, the preparation method of described adsorbent composition comprises the following steps:

[0038] (1) Mix the nano ferric ferric oxide and the lipase solution and adjust the pH of the mixture to 6.0-7.0, then place the mixture at about 25° C. and stir for at least 1 hour;

[0039] (2) Add sodium humate and chitosan to the mixture obtained in step (1), continue stirring for at least 30min, then add zeolite powder, sodium carboxymethyl starch, polyaluminum chloride, sepiolite powder and wheat Rice stone powder, mix well.

Embodiment 1

[0042] The adsorbent composition used to remove heavy metal ions in industrial wastewater in this example, the raw materials of the adsorbent composition include the following components: 25 parts of nano ferric oxide, 39 parts of lipase liquid, sodium humate 10 parts, 11 parts of medical stone powder, 12 parts of sodium starch glycolate, 11 parts of polyaluminum chloride, 6 parts of chitosan, 7 parts of sepiolite powder, and 6 parts of zeolite powder.

[0043] In this embodiment, the lipase liquid is prepared by mixing the lipase liquid produced by the secretion of Pseudomonas fluorescens and the lipase liquid produced by the secretion of Pseudomonas aeruginosa in a mass ratio of 3:2;

[0044] in:

[0045] The cultivation method of Pseudomonas fluorescens and Pseudomonas aeruginosa comprises the steps:

[0046] (1) Preparation of beef extract liquid medium: Weigh 30g of beef extract, 15g of peptone and 15g of sodium chloride and dissolve in 1000mL distilled water, adjust ph=...

Embodiment 2

[0063] The adsorbent composition used for removing heavy metal ions in industrial waste water in the present embodiment, the raw material of described adsorbent composition comprises the following components: 23 parts of nano iron ferric oxide, 42 parts of lipase liquid, sodium humate 8 parts, 12 parts of medical stone powder, 11 parts of sodium starch glycolate, 12 parts of polyaluminum chloride, 5 parts of chitosan, 8 parts of sepiolite powder, and 5 parts of zeolite powder.

[0064] In the present embodiment, the lipase liquid produced by the secretion of Pseudomonas fluorescens and the lipase liquid produced by Pseudomonas aeruginosa are mixed in a mass ratio of 3:2; wherein, Pseudomonas fluorescens And the culture method of Pseudomonas aeruginosa and the extraction method of its lipase liquid are the same as embodiment one.

[0065] In this example:

[0066] The dry content of humic acid in the sodium humate is ≥55%;

[0067] The active substance content in the sodium c...

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Abstract

The invention provides an adsorbent composition for removing heavy metal ions in industrial wastewater. The adsorbent composition comprises the following raw material components: 23-28 parts of nano-iron oxide, 37-42 parts of lipase liquid, 8-12 parts of sodium humate, 10-12 parts of medical stone powder, 11-13 parts of sodium carboxymethyl starch, 10-12 parts of aluminium polychloride, 5-8 partsof chitosan, 5-8 parts of sepiolite powder and 5-8 parts of zeolite powder. According to the adsorbent composition disclosed by the invention, the various raw material components for preparing the adsorbent composition are free from toxicity and harmless, and secondary pollution after adsorption treatment is avoided. Moreover, the various raw material components have excellent adsorption effects,the various raw material components can be mutually promoted and matched with one another in the mixed preparation process of the adsorbent composition, synergistic effects are achieved, and finally the prepared adsorbent composition is capable of well adsorbing the heavy metal ions in the industrial wastewater, and is excellent in adsorption effect, high in adsorption efficiency, low in cost andstable in adsorption.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to an adsorbent composition for removing heavy metal ions in industrial wastewater. Background technique [0002] With the rapid development of my country's industrialization and urbanization process, a large amount of discharge of heavy metal wastewater has made the heavy metal pollution in water sources and soil more acute, and it is urgent to strengthen the prevention and control of water pollution. Industrial wastewater containing heavy metal ions mainly comes from mining, electroplating, machining, metal smelting and some chemical industries. Wastewater usually contains Pb, Cu, Cr, Hg, Cd, As, Zn, Co, Ni, etc. These pollution components are different from organic pollutants. When they are discharged into the environment, they cannot be degraded into harmless high-end products, but can only change their existing form or be transferred and diluted. Some heavy metal ions...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24C02F1/28B01J20/30C02F101/20
CPCB01J20/0248B01J20/06B01J20/12B01J20/16B01J20/24C02F1/288C02F2101/20
Inventor 邱雪敏关伟李艳琼唐亮蒲章利张灿云张娇李伟
Owner 重庆精创联合环保工程有限公司
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