Technical equipment for emulsifying and activating microbial inoculum

A technology of inoculum and compound inoculum, applied in the field of remediation and soil improvement, can solve the problems of poor removal effect, secondary pollution and high cost, and achieve the effects of improving fertility, long-term removal and low cost.

Active Publication Date: 2021-11-26
CHINESE RES ACAD OF ENVIRONMENTAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above methods have problems such as poor removal effect, high cost, easy to cause secondary pollution, and long time consumption.

Method used

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  • Technical equipment for emulsifying and activating microbial inoculum

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] The corn stalks are washed with water, soaked in 0.01M dilute hydrochloric acid for 2 hours, air-dried to a water content of 15-18%, and chopped. In the pyrolysis furnace, blow nitrogen to purge, and then add straw and a calcium mixture accounting for one-fifth of the weight of the straw through the feeding port (the weight ratio of calcium oxide to calcium carbonate is 2:1, and the temperature is raised to 450-550°C. Insulate the reaction for 2 hours while maintaining the circulation of nitrogen.

[0066] Then lower the temperature to room temperature to obtain semi-coke, crush it, and press it together with the pyrolysis oil obtained by condensing the pyrolysis gas to form pellets with a particle size of 2-4 mm.

[0067] Expand the culture of yeast, Bacillus megaterium, Halomonas, Bacillus subtilis and Pseudomonas aeruginosa to a concentration of 10 9 Each / mL liquid bacteria, mixed according to the ratio of liquid mass ratio of 2:1.8:3.2:3.2:1, while adding the activ...

experiment example 1

[0069] The tested soil is about 5m 3 , collected from a polluted site at a sampling depth of 30-50 cm. A variety of aromatic hydrocarbons used in the experiment were purchased from Sigma Company in the United States and were of analytical grade. Selected by manual sieving, the 30mm undersize was used as the original soil for the restoration experiment. The specific physical and chemical parameters of the soil are as follows: pH is 7.4-8, moisture content is 10%, porosity is 36.5%, vertical permeability coefficient is 1.78×10 － 3 cm / s, the soil texture is sandy silt, the TOC is 1.18%, the content of naphthalene is 42 mg / kg, the content of benzopyrene is 55 mg / kg, and the content of 5-6 polycyclic aromatic hydrocarbons is 47 mg / kg.

[0070] Add the improver according to the ratio of compound soil improver to soil mass at 4:100, turn over the pile regularly and replenish water properly during the restoration process, and monitor indicators (including polycyclic aromatic hydroc...

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Abstract

The invention discloses technical equipment for emulsifying and activating a microbial inoculum. The technical equipment comprises a pyrolyzing furnace, a feeding hole, a purging gas inlet, a pyrolysis gas discharge pipeline, a conveying facility, a cooling area and a discharging hole, wherein gas is in closed cycle in the processes of feeding, pyrolyzing, discharging, conveying and cooling. A semi-coke forming process is safe and environmentally friendly, the resource utilization rate of a plant source carbon source is increased, and organic pollutants in soil can be removed for a long time; and semi-coke, a compound bacteria liquid and an activating agent are jointly used for soil remediation, the activity of microorganisms and the soil remediation efficiency are improved, and meanwhile the soil fertility is improved.

Description

technical field [0001] The invention relates to the technical field of soil improvement and restoration, in particular to a technical equipment and method for improving soil by using and activating a solidified composite bacterial agent. Background technique [0002] Soil organic pollution refers to pollutants composed of natural organic matter in the form of carbohydrates, proteins, amino acids, and fats, and some other biodegradable synthetic organic matter. In the process of oil extraction, storage, transportation and production of petrochemical products, there are often spills, which cause a large amount of oil to enter the soil and cause environmental pollution. Aromatic substances in petroleum pollutants are highly toxic to humans and animals, especially polycyclic and tricyclic aromatic hydrocarbons. Polycyclic aromatic hydrocarbons (PAHs, polycyclic aromatic hydrocarbons) are a kind of toxic organic pollutants containing two or more benzene rings that are widely dis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12N1/20C12N1/14C12N1/16C09K17/40C09K101/00C12R1/885C12R1/645C12R1/11C12R1/01C12R1/125C12R1/385
CPCC12N1/20C12N1/14C12N1/16C09K17/40C09K2101/00
Inventor 李翔王雷席北斗王金生闫政刘慧崔东宇余红郭可昕李艳平胡妍玢
Owner CHINESE RES ACAD OF ENVIRONMENTAL SCI
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