A kind of waste mud dehydration solidification processing method

Abstract

The invention discloses a dehydration and solidification treatment method for waste mud. A multi-level vacuum treatment method is adopted, and multiple layers of horizontal plastic drainage boards and multiple rows of vertical plastic drainage boards are laid in the mud pool, which makes up for the problem of insufficient mud treatment effect in the lower layer and improves solidification. The multi-layer horizontal drainage of the present invention can only be realized by filling mud and sedimentation in batches. The multi-layer horizontal drainage system forms a multi-layer vacuum inside the mud, shortens the drainage path, and has a better drainage effect; moreover, the present invention also uses flocculation Adding a curing agent can improve the effect of vacuum dehydration and consolidation speed. At the same time, adding a curing agent can achieve soil solidification while vacuum dehydrating, without further treatment; this method can quickly improve the processing speed of waste mud and enhance the curing effect of waste mud.

Description

technical field [0001] The invention relates to the technical field of mud dehydration and solidification, in particular to a method for dewatering and solidifying waste mud. Background technique [0002] The engineering mud needs to be discarded after the construction is completed or after it fails to meet the requirements for use. At present, the existing treatment methods of engineering waste mud are out-of-tank transportation, on-site precipitation drying and traditional vacuum pre-pressing treatment. Due to the large output of engineering mud and high water content, about 75% of the actual transported out is water, which has high processing cost and low efficiency. In the process of outbound transportation of mud, there are often spills, which are likely to cause environmental pollution. At present, tank trucks and muck trucks are prohibited from passing through main roads in most cities, which brings great inconvenience to outbound transportation. If the method of on...

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Problems solved by technology

[0003] 1. The horizontal drainage layer usually needs a sand cushion, and the removal of the sand cushion is easy to clog and the vacuum diffusion under the membrane is uneven

[0004] 2. In addition, the plastic drain board is wound and connected with the horizontal drain pipe or directly inserted into the horizontal drain pipe opening and the plastic drain board is easy to cause silt

[0006] 4. After the mud is vacuum dehydrated, the soil properties are weak and cannot be directly used as filler

[0007] 5. Conventional vacuum preloading dehydration has a good treatment effect on the surface layer of the mud pool, but the deep treatment effect is poor

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