Method for treating bottom mud in water by combining biological population with artificial wetland

Abstract

The invention discloses a method for treating bottom mud in water by combining a biological population with an artificial wetland. The method comprises the steps of adding biological bacteria and thespecially trained earthworm animal population into the dewatered bottom mud, covering the bottom mud with plant residual branches and fallen leaves, planting plants enriched with pollutant componentsof the bottom mud on the surface layer of the bottom mud, and constructing the artificial wetland; performing daily management on the artificial wetland, and controlling the water content, soil pH andsoil temperature of the contained bottom mud until the bottom mud satisfies the recycling standard and the appearance of the bottom is not black or stink. According to the characteristics of bottom mud pollution of water in riverways and the like, a technology for treating and recycling the bottom mud by combining the biological bacteria and the domesticated earthworm animal population with the artificial wetland is provided, and through synergistic treatment of the biological bacteria and the domesticated animal population, the odor in the bottom mud can be eliminated, the decomposition efficiency of organic pollutants is improved, the time for changing the bottom mud from black to yellow is shortened, and the cost is reduced in comparison with outward transportation, drying incinerationand other traditional treatment modes.

Description

technical field [0001] The invention belongs to the field of environmental management, and in particular relates to a method for treating river channel sediment by using biological bacteria and animal populations (earthworms, etc.) and artificial wetlands. Background technique [0002] In recent years, as the society has paid more and more attention to the problem of river pollution, river regulation and ecological restoration have achieved remarkable results. At the same time, it has also exposed practical problems such as the lack of technology and the difficulty of ecological governance in river sediment treatment, such as "black Smelly water body" treatment problem. As part of the river ecosystem, river sediment is also the "source" and "reservoir" of pollutants in river water. Pollutants entering the water body can enter the sediment through various physical channels such as sedimentation, adsorption, and biological absorption. Under certain conditions, the pollutants ...

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Problems solved by technology

[0010] 1) The river sediment treatment process causes secondary pollution to the environment, which is not conducive to the ecological restoration of the polluted river

[0011] 2) The cost of river sludge treatment is high, and the degree of sludge resource utilization is low

[0012] 3) Microbial remediation has strict requirements on the implementation environment and is not suitable for large-scale promotion

[0013] 4) For the sludge treatment of water bodies such as rivers, there is still a lack of effective domestication methods for animal populations (for example, earthworms), resulting in a low survival rate of earthworms in the bottom mud, poor synergy with microorganisms, and the inability to eliminate sludge black in a short period of time. smell, restore soil ecosystem

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