Method for improving soil water and cracks by using biochar synthesized by using water hyacinth

Abstract

The invention relates to a method for improving soil water and cracks by using biochar synthesized by using water hyacinth. The method mainly comprises the steps: (1) drying stems of the water hyacinth in the air, breaking the stems of the water hyacinth into small pieces, and then, carrying out pyrolysis under the conditions of oxygen insufficiency and high temperature; (2) crushing a rough waterhyacinth charcoal material obtained by pyrolysis by using an automatic crusher, and carrying out screening by using a screening device to obtain the water hyacinth charcoal material; and (3) mixing the water hyacinth charcoal material obtained in the step (2) and soil. The invention develops a novel application of harmful invasive weeds WH, the harmful invasive weeds are converted into BC by which it is possible that the SWR performance is improved and the soil crack potential is reduced, then, BC is mixed with the soil, and BC capable of improving the water retention and crack potential of engineering soil can be applied to the improvement of a geological environment such as a landfill covering material, a vegetable cover slope and an urban green infrastructure. The conversion from WH toBC is a more sustainable method for managing stubborn weeds in biochar-modified soil.

Description

technical field [0001] The invention relates to the field of biochar improving soil, in particular to a method for improving soil moisture and cracks by using water hyacinth to synthesize biochar. Background technique [0002] Water hyacinth (WH) is one of the most invasive weeds in the world. WH invades the water cover of most tropical countries in the world and reproduces at a very high rate (17.5 tons / ha / day), and various countries spend millions of dollars to control and eliminate its large blooms. It poses a series of serious threats to the ecosystem as its spread leads to the destruction of local biodiversity, increases sediment deposition, causes blockage of river courses and irrigation systems, hinders the development of irrigation projects, and becomes an Possible measures to release greenhouse gases from water bodies. The current conventional weed management strategies include physical or mechanical removal of waste biomass from water bodies on a regular basis, a...

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Problems solved by technology

It poses a series of serious threats to the ecosystem as its spread leads to the destruction of local biodiversity, increases sediment deposition, causes blockage of river courses and irrigation systems, hinders the development of irrigation projects, and becomes an Possible Measures for Greenhouse Gas Emissions from Water Bodies

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