Soil permeation and purification capacity improving material and evaluation method of improving material
A technology of soil infiltration and purification ability, applied in the direction of soil conditioning materials, chemical instruments and methods, analysis materials, etc., can solve problems such as research on the blending ratio of various improved materials, and achieve the effect of improving infiltration and purification capabilities
Inactive Publication Date: 2021-08-06
YANGZHOU UNIV
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Problems solved by technology
However, the current studies are all focused on adding one kind of improved material to the soil alone, and have not studied the simultaneous addition of multiple improved materials and their blending ratios.
Method used
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Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0022] Embodiment I: 10% sand+20% chaff+70% soil;
[0023] Embodiment II: 20% sand+20% chaff+60% soil;
[0024] Embodiment III: 20% sand+30% chaff+50% soil;
[0025] Example IV: 10% sand+20% chaff+70% soil+0.5g / kg desulfurized gypsum.
[0026] Take 100% soil, 10% sand + 90% soil, 20% sand + 80% soil, 20% chaff + 80% soil, 30% chaff + 70% soil as comparative examples Ⅰ, Ⅱ, Ⅲ, Ⅳ, V.
[0027] (2) Determination of soil infiltration capacity after improvement: Soil infiltration test is carried out with a permeability coefficient tester. Air-dry the collected test soil samples, pass through a 2mm sieve, mix different combinations of improved materials with the soil, and then fill them into the test instrument in turn, filling the height of 10cm and performing manual compaction and water tamping; open the valve, keep the water head constant, Open the water outlet at the same time, clear the balance, and record the balance readings at intervals of 1, 5, 10, 15, 20, 25, 30, 40, 50,...
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Abstract
The invention belongs to the technical field of soil improvement, and particularly relates to a soil permeation and purification capacity improving material and an evaluation method of the improving material. The material comprises sand and rice husks, an improvement material and soil are used according to a certain proportion, the improvement material accounts for 30%-50% by volume, and the balance is the soil; in the improved material, the sand accounts for 10%-20% by volume, and the rice husk accounts for 20%-30% by volume. According to the soil permeation and purification capacity improvement method, the sand, the rice husks, the desulfurized gypsum and other improvement materials are mixed with the soil according to a certain proportion, the permeation and purification capacity of the soil is effectively improved, and the soil permeation and purification capacity improvement method has remarkable reference significance in the aspects of soil quality optimization, water pollution treatment, sponge city construction and the like and has high ecological and social benefits.
Description
technical field [0001] The invention belongs to the technical field of soil improvement, and in particular relates to a soil infiltration and purification ability improvement material and an evaluation method for the improvement material. Background technique [0002] In recent years, the process of urbanization has accelerated, the area of impermeable land has continued to increase, and problems such as urban waterlogging and rainwater runoff pollution have continued to emerge. There are a lot of pollutants in the rainwater runoff. If it is discharged into the river without treatment, it will not only erode the riverbed but also cause serious water eutrophication. Therefore, it is necessary to take measures to improve soil infiltration and purification effects, control water pollution and control waterlogging through soil. [0003] Most of the green land at home and abroad has a certain degree of runoff pollution. After being washed by runoff and rainwater, the soil qual...
Claims
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IPC IPC(8): C09K17/40G01N15/08G01N33/24
CPCC09K17/40G01N15/082G01N33/24G01N33/245
Inventor 肖鹏吴宇浩顾倩俪康爱红张垚寇长江蒋雨萱
Owner YANGZHOU UNIV