A drainage device and method for accelerating the drainage and consolidation speed of dredged silt

Abstract

The invention discloses a water drainage device and method for increasing the water drainage and consolidation speed of filled sludge. The water drainage device comprises a water drainage system, a negative pressure device and a sewage treatment device. The water drainage system is fixedly connected to the two sides of the negative pressure device through backflow pipes. The negative pressure device is connected with the sewage treatment device through a booster pipe. The sewage treatment device comprises a sewage treatment box. A separating cavity and storage cavities are formed in the sewage treatment box. First filter screens are arranged between the separating cavity and the storage cavities. A stirring mechanism is arranged in the separating cavity. A sedimentation basin is arranged at the bottom of the sewage treatment box. The water drainage method comprises the steps of construction preparation, foundation pit measurement, drainage system arrangement, filling construction, top layer construction and construction acceptance check. By the adoption of the water drainage device and method for increasing the water drainage and consolidation speed of the filled sludge, the arrangement scheme of a water drainage system is simplified, the water drainage and consolidation speed of the filled sludge is effectively increased, the strength and stability of the sludge in a whole foundation pit are improved, and the project quality is improved; and meanwhile, the separated water and sludge can be recovered, and resources are saved.

Description

technical field [0001] The invention relates to a drainage device and a method for accelerating the drainage and consolidation speed of dredged silt. Background technique [0002] With the rapid development of economy and society, and the continuous expansion of urban scale, many cities use the intertidal zone of the bay to reclaim land from the sea, and the soil and rocks required are less and less, so the use of silt as a filler for land creation has emerged as the times require, and the seabed silt It is filled into the enclosure by dredging, and after certain treatment, it becomes a foundation with a certain bearing capacity. This method of land creation by dredging and filling silt is being used more and more widely. [0003] A method for dredging and filling sludge drainage and consolidation announced by the State Intellectual Property Office of China (application number: 201110308999.2, publication number: 102312416, announcement date: 2012.01.11), the method is mainl...

AI Technical Summary

Problems solved by technology

Although the particle size of the dredged silt is increased through collision, coagulation, flocculation, and agglomeration, the dredged fill strength of the entire foundation pit is low, the stability is poor, and the drainage and consolidation speed of the dredged silt is not obvious. Waste water and sludge cannot be recycled

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