Groundwater is generally considered as a water resource with high quality and stable temperature. For groundwater intake, large storage or water delivery facilities are not required. Groundwater is widely used for various purposes, such as domestic, commercial, industrial, agricultural, and so on.
NAGAOKA PROFIRE WIRE SCREEN was developed from our own technology and has been contributed to design more efficient groundwater well. Nagaoka groundwater intake technologies were established from rich experiences and know-how in manufacturing screen internal for oil refineries and petrochemicals. Shallow well and infiltration galleries can produce great amount of water and rehabilitate the existing well. For deep well, screen slot can be designed to meet with geological conditions. Especially with high strength and wide opening, Ring Base Screen has been widely applied to artesian aquifer, making an effective and sustainable deep well intake.
Nagaoka Screen has high open ratio and clog-prevention structure. It enables water intake efficiency about 10 times higher than other strainers, such as slit pipes. Free design of the slot size to suit each aquifer satisfies the market needs widely.
The strong structure and corrosion-resistance materials enable Nagaoka Screen to be installed in deep underground and endure in disasters such as earthquakes.
“Sand control technology”, a know-how to control sand movements around screen, enables a stable water intake by allowing only “water” to come inside the well and preventing clogging.
It is used for water intake from unconfirmed aquifer (river-bed water and free water) in the shallow aquifer and enables stable water intake even at the drawdown in drought.
In the case of rehabilitation of the old well dried out by clogging and requiring higher water intake efficiency, radial well can become the optimum solution.
Infiltration galleries intake river-bed water and free groundwater from river-bed.
NAGAOKA SCREENs were delivered to over 1,000 water intake projects in Japan, and through such long and rich experiences, applications were diversified to underground dam, infiltration galleries, river clean projects, water well collector and even to high speed seabed infiltration system. Integrating technologies of water intake and water treatment, NAGAOKA offers optimum solutions to various needs of customers.
●Water Well Recovery Project
Liaoning, Lingyuan City 2011
New Barag, Inner Mongolia Autonomous Region 2012
●Deep Well Construction
Suihua City 2012
●Purification Project for Industrially Polluted River
●Shallow Well Construction
St. Helens, Oregon 1995