Biological fermentation soil restoration method for removing heavy metal lead

A biological fermentation and soil remediation technology, applied in the restoration of polluted soil, etc., can solve the problems of serious ecological impact, large technical limitations, and few plant species, and achieve strong selectivity, good treatment effect, and low design and construction costs Effect

Active Publication Date: 2016-09-21
中水卫士生态科技有限公司
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  • Abstract
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Problems solved by technology

However, few plant species are available, so there are limitations in governance
[0008] At present, existing soil heavy metal lead pollution c

Method used

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  • Biological fermentation soil restoration method for removing heavy metal lead

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[0021] Such as figure 1 As shown, a biological fermentation soil remediation method for removing heavy metal lead is performed by a biological fermentation-lead salinization reactor 6. Biological fermentation-lead salinization reactor 6 is made of manganese alloy steel with an internal volume of 320m 3 , The upper left part of the reactor is provided with a soil feed port 61, the lower left part is provided with a soil discharge port 68, and the lower right part is provided with a waste discharge port 69. The middle part of the reactor is equipped with a biological fermentation bin 62 with an effective volume of 125m 3 , And connected to the soil feed port 61 by a conveyor belt. The top of the reactor is equipped with a stirring blade 63 and two atomizing nozzles 64 through a fixed bracket. The stirring blade 63 extends into the middle of the biological fermentation bin 62, and the atomizing nozzle 64 is located above the bio-fermentation bin. At the bottom of the bio-fermentati...

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Abstract

The invention discloses a biological fermentation soil restoration method for removing heavy metal lead. According to the method, the biological fermentation characteristics of oxidation staphylococcus bacillus are creatively utilized; under the participation of D-sorbitol and various inherent nutrient contents in the soil, a lactonization reaction takes inside the oxidation staphylococcus bacillus; finally, L-ascorbic acid (vitamin C) is produced through fermentation; then, the L-ascorbic acid can be combined with the heavy metal lead to produce non-toxic inorganic salts with the density being obviously greater than that of soil particles; and the inorganic salts can be separated and removed from the soil through vibration sorting operation. Meanwhile, the cost of the L-ascorbic acid produced by the D-sorbitol participating in the biological fermentation reaction is much lower than the cost of directly adding the L-ascorbic acid into the soil; and the material cost of the soil restoration treatment can be greatly reduced.

Description

technical field [0001] The invention relates to a biological fermentation soil restoration method for removing heavy metal lead, belonging to the field of soil restoration in environmental protection. Background technique [0002] With the growth of the global population and the acceleration of industrialization, the protection of soil and the environment and the sustainable development of agriculture have become important issues facing human beings in the world today. Heavy metals are the main soil inorganic pollutants, and the pollution of heavy metals is irreversible. In the past two decades, people have conducted extensive research on the pollution of soil ecological environment by heavy metals introduced through different ways. [0003] Lead is one of the common heavy metal elements in nature, and it is also one of the important polluting heavy metal elements. Lead is a non-essential element for humans, animals, and plants. Lead in soil is divided into natural sources...

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Application Information

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IPC IPC(8): B09C1/08B09C1/10
CPCB09C1/08B09C1/10B09C1/105
Inventor 朱辉
Owner 中水卫士生态科技有限公司
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