Continuous dewatering and curing integrated process for mud and silt

Abstract

The invention provides a continuous dewatering and curing integrated system for mud and silt. The system comprises concentration equipment, stirring equipment, dewatering equipment, a sludge feeding pump and an additive feeding pump, wherein the concentration equipment, the stirring equipment and the dewatering equipment are communicated sequentially through pipelines, and the concentration equipment is further connected with the sludge feeding pump and the additive feeding pump through pipelines. The invention further provides a continuous dewatering and curing integrated process for mud and silt. According to the continuous dewatering and curing integrated process for mud and silt, the mud or silt with the water content being 70%-90% can be dewatered, the water content is reduced to 20%-40% in combination with agent modification and mechanical dewatering, the reduction effect is remarkable, the compressive strength is improved, and building mud and river silt can serve as backfilling soil or afforestation soil after being treated.

Description

technical field [0001] The invention belongs to the technical fields of construction engineering, municipal engineering and environmental engineering, and relates to an integrated process of continuous dehydration and solidification of mud and sludge. Background technique [0002] In the south of the Yangtze River in my country, especially in the southeast coastal area, due to the high groundwater level and complex geological structure, public, industrial and civil buildings generally use pile foundations as building foundations. During the construction of pile foundations, a large amount of construction mud is produced (each Cubic natural soil can produce 4 to 5 cubic mud, and each foundation project usually produces thousands or even hundreds of thousands of cubic mud), with the continuous acceleration of urbanization, high-rise, super high-rise buildings, subways, expressways, large bridges There are more and more constructions such as various projects, and the amount of mu...

AI Technical Summary

Problems solved by technology

However, there are defects that the equipment cannot work continuously, the mud feeding and filter pressing links are separated, the mud dehydration cycle is long, the processing capacity is limited, and the equipment is bulky and the installed power is high.

[0008] Chinese patent CN201210582961.9 discloses a deep dehydration treatment method for river channel and inner lake silt. The deep dehydration method is to add loaded TiO to the silt first. 2 Photoelectric catalyst, under the action of ultraviolet light, introduces the air source to carry high-energy electrons, so that the organic matter and fungus structural water, water absorption, and crystallization water in the sludge become flowable interstitial water, and then add a composite coagulation agent Carry out flocculation reaction, dehydration can be obtained immediately. This invention has the advantages of short reaction time and good dehydration effect. However, the dehydration method requires high equipment and complicated operation, which is not conducive to large-scale promotion and utilization.

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