Waste mud dehydration and solidification treatment method

Abstract

The invention discloses a waste mud dehydration and solidification treatment method which adopts a multi-layer vacuum treatment method, and a plurality of layers of horizontal plastic drainage platesand a plurality of rows of vertical plastic drainage plates are laid in a mud pit, so that the problem of insufficient lower-layer mud treatment effect is solved, and the solidification speed is increased; multi-layer horizontal drainage can be achieved only by filling slurry and precipitating in batches, multi-layer vacuum is formed in the slurry through the multi-layer horizontal drainage system, the drainage path is shortened, and the drainage effect is better; moreover, the flocculating agent is also adopted, so that the vacuum dehydration effect and the solidification speed can be improved, meanwhile, a curing agent is added, soil solidification is realized while vacuum dehydration is performed, and further treatment is not needed; by adopting the method, the treatment speed of the waste mud can be rapidly increased, and the curing effect of the waste mud is enhanced.

Description

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

AI Technical Summary

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

Images