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Method for bioremediating waste water containing copper by common dayflower

A technology of sewage organisms and Commelina, applied in the field of environmental pollution control, can solve problems such as resource limitation

Inactive Publication Date: 2009-10-21
CHANGSHU NANJING NORMAL UNIV DEV RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, mulberry is the feed for silkworms, and the extraction of DNJ from mulberry has the problem of competing with silkworms for food.
And the content of DNJ in the mulberry leaves is related to the growing season and the climate temperature. As the temperature drops, the DNJ content also gradually decreases (Ouyang Zhen, Chen Jun, 2003), so the DNJ extraction industry with mulberry leaves as raw material is greatly affected by resources. limit

Method used

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  • Method for bioremediating waste water containing copper by common dayflower
  • Method for bioremediating waste water containing copper by common dayflower
  • Method for bioremediating waste water containing copper by common dayflower

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The branches or plants of Setcreasea purpurea Boom are made into a floating bed, planted in sewage with a copper ion concentration of 50 μmol / L, and Bacillus Licheniformis (Bacillus Licheniformis) 0.1-1 g / m is added to the sewage at the same time 2 , let Commelina purple leaf fully absorb copper ions during the growth process, until the growth of Commelina purple leaf is in good condition when harvesting, the survival rate of the plant is increased by 45% compared with that without adding bacteria agent, and the data is analyzed by using SPSS analysis software Analysis of variance, the results show that under this copper concentration treatment, the survival rate of the experimental group that has added bacterial agents is significantly different from that of the experimental group (P2 SO 4 , microwave-assisted leaching twice, filtered, and combined filtrates to obtain the crude extract of DNJ. After removal of impurities, DNJ was purified and separated by a conventiona...

Embodiment 2

[0041] Make a floating bed from the branches or plants of Commelina communis Linn, and plant them in sewage with a copper ion concentration of 250 μmol / L, and add 0.1 to 1 g / m of Bacillus subtilis to the water at the same time 2 , let Commelina purple leaves fully absorb copper ions during the growth process, until the growth of Commelina purple leaves is in good condition when harvesting, the survival rate of the plants is increased by 35% compared with that without adding bacterial agents, and the data is analyzed by using SPSS analysis software Analysis of variance, the results show that under this copper concentration treatment, the survival rate of the experimental group added with bacterial agent is significantly different from that of the experimental group (P<0.05). The copper ion concentration in the water body of the control sample was 153.8 μmol / L). Harvest Commelina sativa enriched with copper ions, extract and isolate DNJ.

Embodiment 3

[0043] The branches or plants of Tradescantia reflexa Rafin are made into a floating bed, planted in sewage with a copper ion concentration of 500 μmol / L, and 0.1-1 g / m of Bacillus mucilaginosus is added to the water at the same time 2 , let Commelina purple leaves fully absorb copper ions during the growth process, and the concentration of copper ions in the water body after restoration is 213.5 μmol / L (the concentration of copper ions in the water body without adding bacterial agents is 265.7 μmol / L). Harvest Commelina sativa enriched with copper ions, extract and isolate DNJ.

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Abstract

The invention relates to phytoremediation technology for treating heavy metal waste water, in particular to a remediating method of heavy metal waste water containing copper by synergistic action of commelinaceae plant and microorganic microbial inoculum. A biological floating bed made from common dayflower is put in waste water polluted by copper which is added with a probiotic agent, pollution by copper is removed by absorption and enrichment of the plant on heavy metal copper, the action of the microbial inoculum is to antagonize putrefying bacteria and secretes auxin substance to improve the biomass of common dayflower, and the harvested common dayflower is used as a raw material for extracting hypoglycemic medicine deoxynojirimycin (shortened as DNJ), thus the remediating process becomes the process of managing pollution, beautifying the environment and obtaining DNJ raw material.

Description

technical field [0001] The invention relates to the technical field of environmental pollution control, in particular to enrichment and removal of heavy metals such as Cu in sewage by using Commelina chinensis and probiotics to synergistically enrich and remove heavy metals such as Cu, so as to realize bioremediation of sewage. Background technique [0002] With the development of society and economy, human beings continue to discharge pollutants containing heavy metals to the environment in industrial and agricultural production and in daily consumption. At present, the average annual emission of Cu in the world is about 3.4 million tons (Cui Dejie, Zhang Yulong, 2004). The pollution of heavy metals to the soil comes from the discharge of heavy metals in the industrial "three wastes", the application of heavy metal pesticides and fertilizers, wastewater irrigation and sludge agricultural use. Due to the long residence time of heavy metals and the characteristics that they ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32C02F101/20A01N63/00A01P21/00C07D211/46
CPCY02W10/10
Inventor 陈雁陈育如李少凤张显球章婷曦陆长梅唐刚
Owner CHANGSHU NANJING NORMAL UNIV DEV RES INST
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