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Novel heavy metal adsorption agent and method for removing heavy metal in industrial waste water through adsorption

A technology for industrial wastewater and heavy metals, applied in chemical instruments and methods, water pollutants, biological water/sewage treatment, etc., can solve problems such as high cost of adsorbents and complex production processes, and achieve low cost of wastewater treatment and great application prospects , to achieve the effect of resource recycling

Inactive Publication Date: 2019-06-18
中科协创环境科技江苏有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the most commonly used adsorbents are activated carbon and modified cellulose, etc., but most of the adsorbents limit their application due to high cost or complicated production process.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Aspergillus niger slant strains were inoculated on the seed medium for shake flask culture. After culturing for 24 hours at 27-30°C with a rotation speed of 160rmp, they were inoculated in the fermentation medium for fermentation tank cultivation at 30°C with a rotation speed of 160rmp and an air flow of 2.5 to 3m 3 Cultivate for 24 hours per hour to obtain the fermented liquid of Aspergillus niger, and the diameter=diameter obtained after filtering the fermented liquid of Aspergillus niger is 20-50mm bacteria balls and dried until the moisture content is less than 10% to obtain dry bacteria balls.

[0012] Wherein, the seed medium is: glucose 20g / L, yeast extract 5g / L, peptone 6g / L; the fermentation medium is: glucose 80g / L, bean cake powder 10g / L, KNO31g / L, KH 2 PO 4 1g / L,FeCl 2 ·6H 2 O0.05g / L, CaCl 2 ·7H2O

[0013] 0.02g / L, MgSO 4 ·7H 2 O 1g / L, CaCO 3 40 g / L.

Embodiment 2

[0015] Prepare 1L of lead standard solution of 0.1g / L, adjust the pH value to be greater than 3, put the dried bacterium ball obtained in implementation 1 into the adjustment pool of lead standard solution, and after 18 hours of aeration and stirring, after testing, the content of heavy metals in the lead standard solution Less than 0.01g / L.

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Abstract

The invention discloses a novel heavy metal adsorption agent and a method for removing heavy metal in industrial waste water through adsorption. The novel heavy metal adsorption agent is a dried bacterial ball obtained by drying a bacterial ball with the diameter being 20 to 50mm after the Aspergillus niger fermentation to a state with the moisture content being smaller than 10 percent. Waste materials are used for controlling waste materials; the Aspergillus niger bacterial ball is used for adsorbing, removing and recovering the heavy metal in the waste water; the waste water treatment cost is low; the efficiency is high; the resource recovery and utilization are sufficiently realized; important application prospects are realized.

Description

technical field [0001] The invention relates to a novel heavy metal adsorbent and a method for adsorbing and removing heavy metals in industrial waste water. Background technique [0002] Heavy metals are toxic elements that can accumulate in living organisms. With the development of industry, heavy metal pollution has received widespread attention. After entering the environment, heavy metals will accumulate and enrich in the biological chain, seriously endangering life and health. At present, the removal methods of heavy metals in water mainly include chemical precipitation, electrolysis, ion exchange, membrane separation and adsorption. Among them, the adsorption method has attracted much attention because of its advantages of no secondary pollution and renewable recovery. At present, the most commonly used adsorbents are activated carbon and modified cellulose, etc., but most adsorbents limit their application due to high cost or complicated production process. Content...

Claims

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Application Information

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IPC IPC(8): C02F3/34C02F101/20
Inventor 仲鹏鹏于鹏
Owner 中科协创环境科技江苏有限公司
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