Hydraulic Reclamation Silt Consolidation via Flocculation and Deep Vacuum Preloading
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Solution Overview
Problem
Conventional flocculation and dehydration systems fail to completely remove water from hydraulic reclamation silt, leading to insufficient dehydration and rendering the slurry unsuitable for direct use in earthwork landfills.
Innovation Solution
A system combining flocculation and deep boosted vacuum preloading, which includes an agitation tank, dehydration tank with a filter plate mechanism and weep holes, and a deep boosted drainage system using ballheads and a metal drill bit to enhance water extraction, allowing for thorough water discharge and soil dehydration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If conventional flocculation and dehydration equipment is used, then the system is simple to operate, but water cannot be drained completely and dehydration is insufficient
Solution Approach 1:
The dehydration tank is divided into multiple functional zones: a precipitation zone for initial water separation, a discharge zone for slurry discharge, and a water storage zone for collecting drained water. This segmentation allows different dehydration stages to occur in dedicated spaces, enabling complete water removal while maintaining manageable system complexity
Solution Approach 2:
The invention introduces a vertical dimension to water removal by adding a water storage zone above the precipitation zone, connected via a drainage plate. This multi-level arrangement enables water to be removed through both bottom discharge and top storage, achieving complete dehydration without significantly increasing horizontal system complexity
2Quantity of substance
If supernatant water is pumped and drained through pipelines, then the dehydration process is simple, but water in the slurry cannot be drained and remains too high
Solution Approach 1:
A drainage plate with water storage coaming acts as an intermediary between the precipitation zone and water storage zone. This intermediary structure allows water to be automatically channeled and stored at a higher level, facilitating complete water removal while simplifying operation through passive gravity-driven flow rather than complex pumping requirements
Solution Approach 2:
The system utilizes hydraulic principles through the water storage coaming and drainage plate configuration, where water naturally flows from the precipitation zone through the drainage plate into the water storage zone above. This hydraulic arrangement enables automatic water separation and removal without requiring complex mechanical pumping systems for the water phase
3Quantity of substance
If a flocculant is added and agitated to form supernatant water and lower-layer slurry, then the flocculation process is straightforward, but the remaining slurry cannot be directly utilized due to too high water content
Solution Approach 1:
The water storage zone is prepared in advance above the precipitation zone, ready to receive and store water as it drains from the slurry. This preliminary preparation of the water reception space enables continuous and complete water removal during the dehydration process, significantly improving dehydration efficiency and enabling direct utilization of the dehydrated slurry
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system effectively removes excess water from the slurry, enabling the dehydrated soil to be used directly in landfills by ensuring complete drainage and reducing water content, thus overcoming the limitations of conventional dehydration methods.
Implementation Method 1
adding a flocculant into a flocculant preparation tank to mix with water at a certain ratio
Implementation Method 2
activating the agitation tank to agitate and mix the slurry with the flocculant
Implementation Method 3
delivering the agitated slurry to a precipitation zone of a dehydration tank, standing the slurry to form slurry in a lower layer and clear water in an upper layer
Implementation Method 4
standing the slurry to form slurry in a lower layer and clear water in an upper layer within the precipitation zone
Implementation Method 5
a tank bottom valve and a filter plate mechanism are successively arranged at the lower delivery port; the filter plate mechanism comprises filter plates which can be turned to open or close; weep holes are formed on the filter plates
Implementation Method 6
discharge valve below the discharge zone is connected to a deep boosted drainage tank
Implementation Method 7
deep boosted drainage tank
Data Source
AI summary
The present invention discloses a system for consolidating hydraulic reclamation silt by combined flocculation and deep boosted vacuum preloading, comprising an agitation tank, wherein the agitation tank is connected to a flocculant preparation tank and a slurry delivery device; a tank bottom valve and a filter plate mechanism are successively arranged at a lower delivery port of a precipitation zone of a dehydration tank; weep holes are formed on filter plates; there is a discharge zone below the precipitation zone of the dehydration tank; a drainage plate is provided on an upper side wall of the precipitation zone; a water storage coaming is provided outside the drainage plate; the water storage coaming and the drainage plate are enclosed to form a water storage zone; the water storage zone is connected to a reservoir via a second delivery pipe with a second delivery pump provided thereon; a water pumping port is provided within the discharge zone; the water pumping port is connected to the reservoir via a third delivery pipe with a third delivery pump provided thereon; and, the discharge valve below the discharge zone is connected to a deep boosted drainage tank. The present invention further provides a method for consolidating hydraulic reclamation silt by using the system. The system and the method for consolidating hydraulic reclamation silt implemented by the system can more thoroughly discharge water in the slurry, so that the soil becomes drier and harder and can be directly used in the landfill of earthwork; moreover, a greater amount of water can be collected.