Stratified groundwater sampling is a crucial aspect of groundwater research and management. A team led by Dr. Jet-Chau, Wen, Distinguished Professor at National Yunlin University of Science and Technology, has developed a highly applicable and flexible "Multi-stage Concentric Well Casing Device," offering a more economical and efficient solution for stratified groundwater sampling. Composed of a central circular pipe and multiple annular sections, each annular part can be divided into independent well casings with screen openings of various sizes as needed. This design allows for precise sampling of water quality from different aquifers while simultaneously conducting monitoring and well purging.
Traditional Well Drilling: Many Limitations, High Costs
Currently, there are two main techniques for stratified groundwater sampling:
Multiple pipes in a single well: Several pipes of different lengths are placed in the same well to extract water samples from different aquifers.
Multiple openings in a single pipe: A packer system is used to isolate different monitoring and sampling positions at various depths within aquifers.
Both traditional methods have drawbacks, including large drilling areas, high costs, and inability to simultaneously purge, monitor, and sample.
Key Advantages of the "Multi-stage Concentric Well Casing Device"
Fully meets practical operational needs: precise sampling, independent monitoring, and well purging capabilities.
Low cost and easy installation: Uses PVC or PE materials to reduce costs, with simple installation methods.
Lower land and well construction costs: Reduces wellhead area, lowering construction expenses.
Higher applicability and flexibility: Can increase the number of annular division openings or well plug openings as needed to meet various requirements.
Unique Technology with Large Potential Market!
Professor Wen states that this product is a significant breakthrough in stratified groundwater sampling, providing a more economical and efficient solution for groundwater research and management. Currently, there are over 8,000 monitoring wells Androsss Taiwan. Based on this, the estimated demand for multi-stage concentric well casings could reach 500,000 units, showing competitive potential in the market. Several companies, including Yexing Environmental Technology Co., Ltd., Jingdi Engineering Co., Ltd., and Jigu International Co., Ltd., have expressed interest in collaborating with the team to promote this technology.
In the future, the team will continue to develop and promote applications of this technology while also engaging with the Soil and Groundwater Pollution Remediation Fund Management Board to explore the possibility of incorporating this technology into regulations, thereby promoting sustainable use of groundwater resources.
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