Groundwater Interception for Sandy Soil Landfill Pollution
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The challenge of effectively treating sandy soil landfill solid waste pollution in river channels is exacerbated by the high permeability of sandy soils, which complicates groundwater interception and ecological remediation, leading to increased costs and construction difficulties.
Innovation Solution
A treatment system comprising a groundwater interception and diversion system with a water intake well, buffer pool, and wastewater treatment, combined with a river channel ecological remediation system featuring an impermeable layer and ecological bank protections using HDPE film, bentonite, clay, and ecological prefabricated bricks with herb seed-containing silt, effectively preventing pollution and promoting ecological restoration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ground water and soil remediation is carried out after dredging landfill solid waste, then the pollution is treated, but the cost increases and construction difficulty increases
Solution Approach 1:
The patent extracts the harmful groundwater from the landfill area before it can contaminate the river channel. By installing a groundwater interception well upstream of the landfill, the system captures and diverts groundwater away from the solid waste, preventing pollution at the source rather than treating contamination after it occurs.
Solution Approach 2:
The patent implements preliminary action by intercepting and diverting groundwater before it contacts the solid waste in the landfill. The groundwater interception and diversion system is constructed upstream of the landfill to prevent contaminated water from reaching the river channel, avoiding the need for expensive post-contamination remediation.
2Reliability
If ground water and soil remediation is carried out after dredging landfill solid waste, then the pollution is treated, but the cost increases
Solution Approach 1:
The patent extracts the harmful groundwater from the landfill area before it can contaminate the river channel. By installing a groundwater interception well upstream of the landfill, the system captures and diverts groundwater away from the solid waste, preventing pollution at the source rather than treating contamination after it occurs.
Solution Approach 2:
The patent implements preliminary action by intercepting and diverting groundwater before it contacts the solid waste in the landfill. The groundwater interception and diversion system is constructed upstream of the landfill to prevent contaminated water from reaching the river channel, avoiding the need for expensive post-contamination remediation.
3Speed
If sandy soil with high permeability is present, then groundwater flows easily, but the difficulty in solid waste removal and remediation increases
Solution Approach 1:
The patent introduces an intermediary groundwater interception well that acts as a mediator between the high-permeability sandy soil and the river channel. This intermediary structure captures groundwater before it can carry pollutants from the landfill into the channel, overcoming the challenge posed by rapid groundwater flow through permeable soil.
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
This approach significantly reduces the cost and complexity of remediation, prevents sediment pollution, and enhances the treatment efficiency of river channels by intercepting pollutants and promoting ecological recovery.
Implementation Method 1
a High-Density Polyethylene (HDPE) film with a thickness of 1.5 to 3 mm
Implementation Method 2
bentonite with a thickness of 30 to 35 cm
Implementation Method 3
a water intake well arranged upstream of ground water in a landfill area
Implementation Method 4
ecological prefabricated bricks arranged on the ecological slope protections, and slope protection green plants planted between the ecological prefabricated bricks
Data Source
AI summary
A system for a sandy soil landfill solid waste polluted river channel, includes a ground water interception and diversion system and a river channel ecological remediation system. The ground water interception and diversion system includes a water intake well arranged upstream of ground water in a landfill area, a buffer pool communicated with the water intake well, and a wastewater treatment system communicated with the buffer pool. The water intake well, the buffer pool, and the wastewater treatment system are communicated through a wastewater pipe. An electric wastewater valve and a variable frequency water pump are arranged on the wastewater pipe in sequence. The river channel ecological remediation system includes an impermeable layer arranged at a bottom of a river channel and ecological bank protections arranged on both sides of a river channel slope.