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Composition for microorganisms

A technology of microorganisms and compositions, applied in the field of compositions for microorganisms

Active Publication Date: 2017-09-08
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Such a nutrient source may cause secondary pollution caused by diffusion to parts other than the polluted area when excessive injection is made.

Method used

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  • Composition for microorganisms
  • Composition for microorganisms
  • Composition for microorganisms

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0033] Examples of the composition for microorganisms of the present invention are shown below. As a preliminary experiment, compositions for microorganisms with different compositions were prepared and their behavior in soil was confirmed. figure 1 The apparatus used in the experiment is shown. For the container 10, an acrylic tube with an inner diameter of 130 mm, a wall thickness of 10 mm, and a length of 500 mm was used. One end is closed with a bottom plate 11 formed with a plurality of through holes. About 3 liters of soil 12 excavated from the aquifer 7 m underground was filled up to a height of 400 mm from the bottom plate 11 .

[0034] 100 cc of the sample 30 of the composition for microorganisms was injected to a point at a depth of 100 mm from the surface of the soil in the container 10 using the syringe pump 14 . Thereafter, it was left to stand for 1 day.

[0035] Next, refer to figure 2 , water 20 is added from above the soil 12 in the container 10, and th...

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Abstract

When injected into the ground in order to impart thixotropy, a composition for microorganisms, which includes glycerine, stearic acid, and calcium carbonate, becomes a gel and does not diffuse in groundwater or the like. Accordingly, excellent sustained release properties can be expected. However, although the effect is scheduled to last for several years, a phenomenon occurs in which the effect dissipates in less than one year. By including glycerine and calcium carbonate, and not including fatty acids, a composition for microorganisms can be provided which exhibits sufficient sustained release properties in practice, and which is capable of purging organochlorine compounds in soil and groundwater.

Description

technical field [0001] The present invention relates to a composition for microorganisms injected into soil and groundwater to purify soil and groundwater by decomposing organochlorine compounds in soil and groundwater by microorganisms. Background technique [0002] The problem of soil and groundwater contaminated by chemical substances is that not only human beings but also the balance of the biological world as a whole are disrupted. From the viewpoint of environmental protection, some kind of countermeasure is required. In addition, leaving the polluted soil and groundwater untreated limits the range of human activities, and countermeasures are also required from an economic point of view. [0003] Conventionally, various methods have been proposed to purify soil and groundwater contaminated by chemical substances, such as lime method, iron powder method, soil excavation and replacement method, soil wet soil cleaning method, and biodegradation method. Most of the contam...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12N1/00B09C1/10C02F3/34C02F101/36
CPCB09C1/10C02F3/00
Inventor 安藤卓也清水巧治当田纪贤
Owner PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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