Solid-liquid separation process for drilled pile waste mud

Abstract

The invention discloses a solid-liquid separation process for drilled pile waste mud. The method comprises the following steps of: A, collecting and purifying the drilled pile waste mud; B, flocculating the purified mud; C, performing filtration aid treatment on the flocculated mud by taking quicklime powder as a filter aid; and D, performing solid-liquid separation on the mud after filtration aid treatment. Through the process, the waste mud can be treated at the construction site thoroughly and is prevented from discharging to the environment at source; and the available parts in the mud can be well recycled.

Description

technical field [0001] The invention relates to a solid-liquid separation process for waste mud of bored piles. Background technique [0002] Bored piles are widely used in the foundation of industrial and civil buildings and structures due to their excellent characteristics such as universal applicability to strata, mature construction technology, and high bearing capacity. A large amount of waste mud will inevitably be produced in the process. Generally, the amount of waste mud is 2 to 4 times that of the pore-forming body. The waste mud of bored piles is mainly composed of water and solid phase particles, which are measured by volume ratio. Generally, water accounts for 70% to 80%, and solid phase particles account for 20% to 30%. According to the particle size of solid phase particles, it can be divided into gravel group (>2mm); sand group (50μm~2mm); silt group (5μm~50μm); clay group (<5μm), among which the gravel group and sand group are extremely unstable in wa...

AI Technical Summary

Problems solved by technology

Regardless of the treatment method adopted, the environmental pollution components of the mud have not been changed, and the total amount of mud discharge to the environment has not been reduced, but the pollution location and scope have changed.

Images