Method for removing heavy metal ions in sewage by using gordona amarae

A technology of heavy metal ions and Gordonella, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problem of limited number of heavy metal ions, unable to achieve adsorbent and heavy metal recovery Use and other issues to achieve good adsorption removal effect, good social and economic benefits, and achieve the effect of recycling

Inactive Publication Date: 2019-12-03
中交铁道设计研究总院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these methods can realize the adsorption and purification of some heavy metal ions, they generally have the disadvantages of being able to adsorb heavy metal ions, the types and quantities of which are limited, and that they cannot achieve the recovery and utilization of both adsorbents and heavy metals.

Method used

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  • Method for removing heavy metal ions in sewage by using gordona amarae
  • Method for removing heavy metal ions in sewage by using gordona amarae

Examples

Experimental program
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Effect test

Embodiment 1

[0053] Adsorption process of microbial adsorbent Gordonia spp. on copper ions in wastewater: add the obtained microbial adsorbent wet cells at a dosage of 9.0g / L to the flotation tank containing 60-70mg / L copper ion aqueous solution , the pH of the sewage is 4.0~7.0. After putting in the wet cells of the microbial adsorbent, the flotation tank is stirred and adsorbed for 10 minutes. flotation recovery and separation, under the condition of stirring speed 100-200r / min, pH=4.0~7.0, add 0.06mg / L collector agent dodecylamine to the suspension of Gordonia spp. After recovering the saturated microbial absorbent for 8 minutes, the concentration of the bacterial suspension in the flotation tank dropped below 0.01mg / L. Take the tail liquid in the flotation tank, and drain it after passing the test.

[0054] In the present invention, the collector dodecylamine ion of adsorption flotation is mainly adsorbed with the microbial adsorbent wet cell Gordonella by electrostatic action, and at...

Embodiment 2

[0058] The adsorption process of microbial adsorbent Gordonia spp. to zinc ions in wastewater: add the obtained microbial adsorbent wet cells at a dosage of 9.0g / L to the flotation tank containing 60-70mg / L zinc ion aqueous solution , the pH of the sewage is 4.0~7.0. After putting in the wet cells of the microbial adsorbent, the flotation tank is stirred and adsorbed for 10 minutes. flotation recovery and separation, under the condition of stirring speed 100-200r / min, pH=4.0~7.0, add 0.06mg / L collector agent dodecylamine to the suspension of Gordonia spp. After recovering the saturated microbial absorbent for 8 minutes, the concentration of the bacterial suspension in the flotation tank dropped below 0.01mg / L. Take the tail liquid in the flotation tank, and drain it after passing the test.

[0059] In the present invention, the collector dodecylamine ion of adsorption flotation is mainly adsorbed with the microbial adsorbent wet cell Gordonella by electrostatic action, and at...

Embodiment 3

[0062] The adsorption process of the microbial adsorbent Gordonia to mercury ions in wastewater: add the obtained microbial adsorbent wet cells at a dosage of 9.0g / L to the flotation tank containing 60-200mg / L mercury ion aqueous solution , the pH of the sewage is 4.0~7.0. After putting in the wet cells of the microbial adsorbent, the flotation tank is stirred and adsorbed for 10 minutes. flotation recovery and separation, under the conditions of stirring speed 100-200r / min, pH=4.0~7.0, add 0.06mg / L collector agent dodecylamine to the suspension of Gordonia spp. After recovering the saturated microbial absorbent for 8 minutes, the concentration of the bacterial suspension in the flotation tank dropped below 0.01mg / L. Take the tail liquid in the flotation tank, and drain it after passing the test.

[0063] In the present invention, the collector dodecylamine ion of adsorption flotation mainly adsorbs with the microbial adsorbent wet cell Gordonella through electrostatic intera...

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Abstract

The invention discloses a method for removing heavy metal ions in sewage by using gordona amarae. The method comprises the following steps: bacteria are subjected to continuous four-generation liquidculture in a nitrogen-containing liquid culture medium, after the bacteria are activated, inoculation is performed in an agar solid slant culture medium or an agar solid plate culture medium for storage, the bacteria are injected into a nitrogen-containing culture medium from the agar solid slant culture medium or the agar solid plate culture medium, shaking culture is performed at 28-30 DEG C and120 r/min for 5 days to obtain a microbial adsorbent, the microbial adsorbent is subjected to centrifugal precipitation or filtration to obtain microbial adsorbent wet cells, the microbial adsorbentwet cells are added into the sewage containing the heavy metal ions in a flotation tank for adsorption, flotation, recovery and separation, and finally the microbial adsorbent and the heavy metal ionsare recovered. According to the method provided by the invention, the microbial adsorbent prepared by the method has good adsorption and removal effects on the heavy metal ions in the sewage, has lowcosts, and is easy for industrial application.

Description

technical field [0001] The invention relates to the field of treatment of heavy metal ions in sewage, in particular to a method for treating heavy metal ions in sewage by using microorganisms. Background technique [0002] In the prior art, the water crisis not only exists in China, it is also a global problem, and the problem of sewage resource utilization is being studied deeply both at home and abroad. Sewage resource utilization is the process of redevelopment and utilization of sewage as a comprehensive resource for the national economy and people's livelihood, and the process of transforming sewage into water resources and material resources for reuse. Sewage is a general term for domestic sewage, sewage, polluted precipitation and other polluted water flowing into drains, ditches and ditches. Among the various factors that cause water pollution, urban domestic sewage and sewage are the main factors of water pollution. To realize the recycling of sewage, the key is to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34C02F101/20
CPCC02F3/34C02F2101/20
Inventor 周东琴周雨亭廖国才颜廷祥乔春江蒋富强杨慧林晏成
Owner 中交铁道设计研究总院有限公司
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