Microbial curing agent for soft clay, application of microbial curing agent to soft clay curing and application method of microbial curing agent

Abstract

The invention discloses a microbial curing agent for soft clay. The microbial curing agent is composed of the following raw materials in parts by weight: 12-18 parts of urea, 25-30 parts of calcium oxide, 40-120 parts of bacillus pasteurii solution and 8-200 parts of oxygenate, and the oxygenate is a calcium peroxide particle. The invention simultaneously discloses an application of the microbialcuring agent for soft clay to soft clay curing and an application method of the microbial curing agent for soft clay in soft clay curing. The invention provides a microbial curing method for soft clay, by which calcium peroxide is adopted as bacillus pasteurii for oxygenation, a curing calcium source is provided and the curing activity of bacillus pasteurii can be durably guaranteed.

Description

technical field [0001] The invention relates to the technical field of clay treatment and resource utilization, in particular to a curing agent using calcium peroxide as a curing agent for microbial oxygenation to solidify soft clay, and the application and application method of the curing agent in soft clay curing. Background technique [0002] Silt refers to the porridge-like and flow-plastic substances produced by river and lake dredging, which are mainly clay particles, have high water content, and basically have no strength. At present, the dredging of river and lake silt in our country mostly adopts the method of suction and agitation. Placing the silt produced by suction and agitation in the yard is one of the main ways of dredging sludge treatment at this stage. Due to the limitations of urban planning and construction and geographical factors, most cities often cannot provide a large amount of land for silt storage. Therefore, the drainage and consolidation of silt ...

AI Technical Summary

Problems solved by technology

Moreover, the existing treatment methods all use mechanical energy or artificial materials to carry out physical and chemical reinforcement of the soil, and in the process of mechanical construction and material production, a large amount of energy is consumed and affects and pollutes the environment

[0004] The microbial solidification method has the characteristics of good economic benefits and low environmental pollution, but microbial solidification is currently only realized in solidified sandy soil with high porosity and good permeability

For soft clay such as dredged silt, due to its small porosity and extremely low permeability, it is difficult to provide the oxygen needed for the growth and survival of Bacillus Pasteurella adsorbed on the surface of soil particles, which seriously affects the activity of Bacillus Pasteurella and reduces the metabolites Yield

The traditional microbial solidification technology is not effective for the solidification of soft clay such as dredged silt

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