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A method for landfill without soil covering

A technology of garbage and covering materials, applied in coatings, fireproof coatings, etc., can solve the problems of less than 5% treatment rate, low level of harmlessness, environmental pollution, etc., save construction time and labor costs, and prevent the spread of harmful diseases , good hydrophobic performance

Active Publication Date: 2021-09-10
北京五洲蓝田环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, my country's urban solid waste treatment is still in the development stage. The most common and effective method is to build a modern sanitary landfill. The level of harmlessness is very low, and the treatment rate is less than 5%.
Most urban solid waste is transported to the suburbs for landfill or stacking without treatment, which not only occupies a large area of ​​cultivated land, but also pollutes groundwater and surface water, causing problems such as cost, land occupation, environmental pollution, and waste of resources.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A method of landfill soil, the specific step is to dissolve ODA in DMF at a concentration of 4% w / v, which is fully dissolved, at 50 ° C, pH 8.0, ultrasonic oscillation frequency 30 kHz, according to The amine-based / carboxyl group mixed ratio 1: 3 was added to the cellulose hydrogel or plant straw puffed powder, and the reaction was washed 5 times after 4h to obtain a modified cellulose bolding product, acidified with 0.5 mol / lHCl solution, then washed with ethanol 5 Times, dry after 100cm 3 / MIN's N 2 The flow was activated, and the activation temperature was 400 ° C, activation time was 3 h, and modified cellulose was obtained. Heating and maintained at 80 ° C, the starch, tri-cyanate trisiene, phosphate flame retardant and deionized water were added to modified cellulose, and after 120min, cooled to normal temperature to obtain garbage filler The cover is buried, and the landfill cover is mixed with water, sprayed into the surface of the garbage layer via the spra...

Embodiment 2

[0024]A method of rubbling soil, the specific steps are: After dissolving ODA in DMF at a concentration of 4.5% w / v, fully dissolved, at 46 ° C, pH 7.8, ultrasonic oscillation frequency 32 kHz, according to according to The amine-based / carboxyl group mixed ratio 1: 3.5 was added to the cellulose hydrogel or plant straw puffed powder, and the reaction was washed 5 times after 3.5 hours to obtain a modified cellulose bolding material, acidified with 0.5 mol / lHCl solution, then washed with ethanol 5 times, dry after 110cm 3 / MIN's N 2 The flow is activated, and the activation temperature is 350 ° C, activation time of 3 h, resulting in modified cellulose. Heating and maintained at 80 ° C, the starch, tri-cyanate trisiene, phosphate flame retardant and deionized water were added to modified cellulose, and after 120min, cooled to normal temperature to obtain garbage filler The cover is buried, and the landfill cover is mixed with water, sprayed into the surface of the garbage la...

Embodiment 3

[0031] A method of landfill soil, the specific step is to dissolve ODA in DMF at a concentration of 3.5% w / v, fully dissolved, at 55 ° C, pH 8.0, ultrasonic oscillation frequency 35 kHz, according to The amine-based / carboxyl group mixture is 1: 2 to add cellulose hydrogel or plant straw puffed powder. After 4 h, the centrifugation was washed 5 times to obtain a modified cellulose bold, and was acidified with 0.5 mol / lHCl solution, then wash 5 with ethanol 5. Second, dry after 120cm 3 / MIN's N 2 The flow was activated, and the activation temperature was 300 ° C, activation time was 3 h, and modified cellulose was obtained. Heating and maintained at 80 ° C, the starch, tri-cyanate trisiene, phosphate flame retardant and deionized water were added to modified cellulose, and after 120min, cooled to normal temperature to obtain garbage filler The cover is buried, and the landfill cover is mixed with water, sprayed into the surface of the garbage layer via the spray coverage. Amo...

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PUM

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Abstract

The invention discloses a method for landfill without soil covering. Modified cellulose, natural polymer binder, controllable cross-linking curing stabilizer, water-based anti-flame retardant material and deionized water are mixed according to the mass ratio of 15-30. :60‑90: 1‑20: 1‑20: 1‑20: 1‑20 mixed to prepare landfill cover material. Among them, modified cellulose is extracted from waste newspapers, straws and other wastes. The above-mentioned landfill covering materials are mixed with water in a ratio of 1:6-1:18, and evenly sprayed on the surface of the garbage layer, they will be effectively absorbed by the garbage, and the loose garbage will be bonded together. The minerals undergo a complexation reaction to form a stable aggregate (aggregate structure), forming a smooth and flat "covering film" of about 0.1-10cm. The "covering film layer" plays a covering role of suppressing odor, preventing flies, preventing dust and preventing seepage.

Description

Technical field [0001] The present invention relates to the field of environmental waste landfill, in particular a method of unintening of landfill. Background technique [0002] Municipal solid wastewaste, referred to as MSW, refers to solid waste (commonly known as rubbish) in activities in the daily life of the city or serving the city's daily lives. In recent years, with the continuous development of the national economy and social production, my country's urban population has increased rapidly, and the amount of emissions from urban solid waste increases from 8% to 10% per year. The impact of garbage on the environment is increasingly obvious, becoming a world-oriented public hazard, which is uncommon due to the unreasonable disposal of malignant pollution and huge life and property. [0003] At present, my country's urban solid waste disposal is still in development, the most common and effective method is to build modern health landfills, the horizontal harmless level is v...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D4/06C09D5/18C08J3/075C08B15/06C08L1/08
CPCC08B15/06C08J3/075C08J2301/08C09D4/06C09D5/18
Inventor 李宝华郑同利郝景林郑同超许耕昕
Owner 北京五洲蓝田环境科技有限公司