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Preparation method of special soil conditioner for high soil resistivity environmental grounding engineering

A technology of soil resistivity and soil improver, which is applied in the direction of soil conditioning materials, chemical instruments and methods, applications, etc., can solve the problems of limited drag-reducing effect of drag-reducing agents, potential safety hazards, short duration of drag-reducing effect, etc., to achieve Prevent oxidation, improve service life, and meet the requirements of use

Active Publication Date: 2019-08-13
黑龙江沃坤农业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem mainly solved by the present invention is: the drag-reducing agent used in the traditional high soil resistivity environment has a limited drag-reducing effect, and the duration of the drag-reducing effect is short, and it is easy to bring great safety hazards during operation. A method for preparing special soil conditioner for high soil resistivity environmental grounding engineering by compounding prefabricated mixture and nitrogen-fixing anabaena culture products, supplemented by humic acid, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0017] Weigh 400g of diatomaceous earth, pour it into a fermenter filled with 2L biogas slurry, and ferment at a temperature of 35°C and a rotation speed of 200r / min for 6 hours at a constant temperature, then filter the material in the fermenter, collect the filter cake, and The obtained filter cake was placed in an oven and dried to a constant weight at a temperature of 105 ° C. Then, the dried filter cake was transferred to a carbonization furnace, and nitrogen was introduced into the furnace at a rate of 10 mL / min. Under nitrogen protection, At a temperature of 500°C, keep warm and carbonize for 3 hours, cool to room temperature with the furnace, and discharge the material to obtain carbonized diatomite; weigh 200g of the carbonized diatomite obtained above, 800g of peat, and 80g of pottery clay in sequence, and pour them into 800mL of water In the ball milling tank, after ball milling and mixing for 80 minutes, the materials in the ball milling tank were piled up in a ligh...

example 2

[0020] Weigh 450g of diatomite, pour it into a fermenter filled with 2L biogas slurry, and ferment at a temperature of 36°C and a rotation speed of 280r / min for 7 hours at a constant temperature, then filter the material in the fermenter, collect the filter cake, and The obtained filter cake was placed in an oven and dried to a constant weight at a temperature of 108°C, then the dried filter cake was transferred to a carbonization furnace, and nitrogen gas was introduced into the furnace at a rate of 12 mL / min. Under nitrogen protection, At a temperature of 520°C, heat-preserve and carbonize for 4 hours, cool to room temperature with the furnace, and discharge the material to obtain carbonized diatomite; weigh 260g of the carbonized diatomite obtained above, 900g of peat, and 90g of pottery clay, and pour them into 900mL of water After mixing for 100 minutes, the materials in the ball milling tank were piled up in a light-proof and ventilated place, and 260g of earthworms were ...

example 3

[0023] Weigh 500g of diatomaceous earth, pour it into a fermenter filled with 3L of biogas slurry, and ferment at a temperature of 37°C and a rotation speed of 300r / min for 8 hours at a constant temperature, then filter the material in the fermenter, collect the filter cake, and The obtained filter cake was placed in an oven and dried to a constant weight at a temperature of 110°C, then the dried filter cake was transferred to a carbonization furnace, and nitrogen gas was introduced into the furnace at a rate of 15 mL / min. Under nitrogen protection, At a temperature of 550°C, keep warm and carbonize for 5 hours, cool to room temperature with the furnace, and discharge the material to obtain carbonized diatomite; weigh 300g of the carbonized diatomite obtained above, 1000g of peat, and 100g of pottery clay in turn, and pour them into 1000mL of water After mixing for 120 minutes, the materials in the ball milling tank were stacked in a light-proof and ventilated place, and 300g o...

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Abstract

The invention discloses a preparation method for a special soil conditioner for high earth resistivity environment grounding engineering and belongs to the technical field of a grounding material. The method comprises the following steps: firstly, mixing and fermenting kieselguhr and biogas slurry; eroding the kieselguhr surface, aiming at enriching a surface pore structure of the kieselguhr while absorbing organic matters in the biogas slurry by the kieselguhr; performing anaerobic carbonization, thereby forming a conductive carbonization support structure by the organic matters in the kieselguhr pores; mixing the carbonized kieselguhr, peat and argil, ball-milling and then inoculating earthworm, thereby acquiring a prefabricated mixture and promoting the water retention capacity; with a self-prepared fluid nutrient medium, performing enrichment culture on nitrogen fixation anabaena; centrifugally separating the cultured products; mixing bottom sediment with the prefabricated mixture and humic acid; performing vacuum freeze drying, thereby acquiring the special soil conditioner for high earth resistivity environment grounding engineering.

Description

technical field [0001] The invention discloses a preparation method of a special soil improver for high soil resistivity environment grounding engineering, and belongs to the technical field of grounding materials. Background technique [0002] The function of the substation grounding grid is to provide a safe and stable operating environment for the system, equipment and people. Under this premise, effectively prolonging its service life and reducing engineering cost are the key points of ground network design. The performance of the grounding system covers many aspects, including conductivity, stability, corrosion resistance, resistance value and safe voltage. Grounding resistance and safety voltage are quantitative values ​​for the grounding grid, and their values ​​are directly related to the safety of the substation. Therefore, the technical requirements for the grounding resistance and safety voltage of the grounding grid are the focus of the construction of the subst...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K17/40
CPCC09K17/40
Inventor 何迎春许丽君
Owner 黑龙江沃坤农业科技有限公司