Nagaoka Screen has been used in various places.
- 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 PROFILE 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.
WHERE TO USE
click to see details.
PRODUCTS
- ALL
- Deep Well
- Shallow Well
- Infiltration Galleries
- Surface Water Intake
- HiSIS
- Groundwater usage measures in construction site
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Deep Well
The facility that pumps up confined groundwater.
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Shallow Well
The facility that pumps up unconfined groundwater.
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Infiltration Galleries
Equipment that collects river bed water. Used for high-volume water collection.
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Surface Water Intake
Collects water that flows through the ground.
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HiSIS
An innovative seawater intake system developed through application of the Nagaoka Screen as core technology.
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Groundwater usage measures in construction site
Works as a measure against underground drain water at construction sites.
Deep Well
There are four types of water intake screens for deep wells, each designed for a specific application. Among them, the Ring-base Screen has won firm trust thanks to its high opening ratio and strength.
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High Open Ratio
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.
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High strength
The strong structure and corrosion-resistance materials enable Nagaoka Screen to be installed in deep underground and endure in disasters such as earthquakes.
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Sand Control Technology
“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.
- Screen type
- RING-BASE SCREEN
- Well Screen
- Pipe-base Screen
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Ring-base Screen (Ringbase V-shaped Wire)
A screen with a double well screen structure. This structure achieves consistently high strength and a high opening ratio.
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Well Screen (Single Rod V-slot Screen)
V-opening screen. Its high opening ratio prevents clogging.
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Pipe-base Screen (Perforated Pipes and Wire Screen)
A screen fitted with perforated pipes. The inner base pipe achieves high strength.
Ring-base Screen
(Ringbase V-shaped Wire)
- ●Double structure for high strength and high opening ratio.
- ●Large Intake area and high performance.
- ●External strength at least equivalent to that of a pipe-base screen.
- ●V-opening structure to prevent clogging.
- ●Strong structure for easy finishing and washing.
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● Performance Evaluation
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● Structure and Finishing Effect
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● Clogging
Well Screen
(Single Rod V-slot Screen)
- ●V-opening structure for high opening ratio and prevent clogging.
- ●Screen can be desgined to meet with requested specification.
- ●High opening ratio for highly efficient water collection.
- ●Easy Finishing and Washing.
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● Performance Evaluation
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● Structure and Finishing Effect
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● Clogging
Pipe-base Screen
(Perforated Pipes and Wire Screen)
- ●A screen fitted with perforated pipes. The inner base pipe achieves high strength.
- ●Screen surface featuring V-opening for prevent clogging.
- ●Inner base pipe for high strength.
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● Performance Evaluation
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● Structure and Finishing Effect
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● Clogging
Shallow Well
Can consistently collect groundwater due to its high strength and long lifespan, thanks to its optimal design for aquifers.
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POINT1
Water intake from the entire aquifer.
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POINT2
Efficient water collection by reducing intake loss.
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POINT3
High opening ratio and extremely large collection area.
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POINT4
Strong structure resistant to earthquakes.
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POINT5
Low water inflow velocity for long-term stable water intake
- ALL
- Ring-base Collector
- Ring-base Radial Well
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Ring-base Collector
Side intake type water collection well discovered by Nagaoka Screen that can maintain stable
water volume intake even in a drought. -
Ring-base Collector
Stable year-round water intake from the entire aquifer.
Used to collect water from unconfined aquifers (subsoil water, unconfined water), and collects water from the earth at relatively shallows depths. Can consistently collect water even during drawdowns at drought periods.
●Water intake from the entire aquifer.
●Smaller head loss gives less drawdown in water level and provides efficient and stable water intake.
●Permits high-pressure washing from the interior.
●Large opening ratio (30%-50%).
●Extremely low (1.0 cm/sec or less) water inflow velocity.
Ring-base Radial Well
The water intake area has increased dramatically because installation of screens, virtually provides larger effective well radius.
The radial screen can effectively help restore old wells that have dried up due to clogging or help achieve more efficient water collection.
Effects of enlarging the well radius of shallow wells
●Water intake volume of 3,000 to 20,000 m3/day
●Smaller well loss gives less drawdown in water level and provides efficient and stable water intake.
●Can collect water from entire aquifer even during abnormal drawdowns at drought periods.
●Large opening ratio (52% or higher).
●Extremely low (1.0 cm/sec or less) water inflow velocity.
For Infiltration Galleries RING-BASE SCREEN
Infiltration galleries intake river-bed water and free groundwater from river-bed.
Infiltration galleries are capable of Large-capacity water intake
●Water intake volume: 10,000-200,000m3/day
●Smaller head loss gives less drawdown in water level and provides efficient and stable water intake.
●Collection area: large
●Opening ratio: 50%
●Water inflow velocity: Slow, less than 1.0cm/sec
●Light structure compering to reinforced concrete makes easy installation
Surface Water Intake
Surface water intake suited to usage and site based on the high performance of Nagaoka Screen.
Nagaoka Screens of various shapes are used for the water intake of surface water in waterworks, agricultural water, snow melt runoff and other systems.
- ALL
- For surface water intake
- For dam water intake
- For surface water in a small hydroelectric plant
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For surface water intake
Water Intake Screen
The Nagaoka Water Intake Screen, combined with a float, can be used for intakes in ponds and reservoirs subject to large water level changes, and permits water intake from the middle section of a reservoir.
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For snow melt runoff
Partitions in a settling basin
Screen panel for water intake
on channel bottom
For water intake pump
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For dam water intake
Ring Guard Intake
The Ring Guard Intake is an innovative dam water intake system combining the dam with the collection screen. It uses the ring-base screen with a high strength
and a high opening ratio for water intake, and discharges excess earth from a gate. It is ideal for a water intake in a mountain torrent.
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For surface water in a small hydroelectric plant
The Nagaoka Screen, through flanging and tapping, is used extensively for water intake for a small hydroelectric plant.
High-speed Seabed Infiltration System
HiSIS
The fact that of all the water on the Earth, just and only 3% is fresh water and the rest is seawater. In order to solve water shortage prevailing throughout the world, sea water desalination can be the only left solution for this global issue. The reality is that RO (reverse- osmosis), the dominant technology, can process at a rate of only 50% (at a maximum) of the whole amount of sea water intake. The larger the scale of the desalination plants become, the higher the initial cost goes up.
NAGAOKA has developed High-speed Seabed Infiltration System “HiSiS” jointly with Hitachi-Zosen, which is an innovative desalination technology with the application of NAGAOKA infiltration screen, reducing significant cost.
An innovative seawater intake system developed through application of the Nagaoka Screen as core technology.
●As marine organisms do not attach to the water intake section, no chemicals are required to remove the organisms.
●Clean seawater can be taken through infiltration onto the sea bottom.
●A special washing method is used to increase the water intake speed. It contributes to space saving.
●The unit design allows a water intake facility to be designed according to the characteristic of the installation site.
Groundwater usage measures in construction site
Nagaoka Screen can be used as a drainage of groundwater for underground facility construction. When open-cut is used to construct road, railway and other structures on an underground line, earth-retaining walls obstruct groundwater flow. Therefore, problems such as rotting of toors and increased buoyancy may occur on the upstream side, as shown in the illustration below. Also, such problems as dried-up wells and land subsidence may occur on the downstream side. Nagaoka Screen is used when intake, drainage and recharge of groundwater at construction site.
IWA-PIA
WORLD AWARD
NAGAOKA Water Intake Technology
Globally Recognized with Global Honour Award by IWA
NAGAOKA Water Intake Technology received Winner in East Asia Region, and Global Honour Award in global competition in Small Project Category of IWA-PIA 2012, for its optimum solution for water shortage by use of effective screens.
TECHNOLOGY & ACHIEVEMENTS
Delivery record
NAGAOKA Technology is applied with rich experience, and supporting Japanese Water Projects!
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.
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Ring base screen for burial
F Prefecture
Use:
Industrial waterDelivery date:
March 2014 -
Ring base collector
I City,
Mie PrefectureUse: tap water source
Delivery date:
August 2009 -
Ring base radial
I Prefecture
Use: fishery water
Delivery date:
December 2012
Our Contribution to the World’s Water Intake/ Delivered NAGAOKA SCREEN to 37 Countries since 1980.
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America
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UAE
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Malaysia
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China
Other delivery records
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America
USA, Colombia
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Africa
Algeria, Nigeria, Libya, Egypt, Sudan, etc.
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Middle East
Saudi Arabia, UAE, Kuwait, Iran, Jordan, Quarter, etc.
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Asia
China, Korea, Taiwan, India, Vietnam, Malaysia, Indonesia, Nepal, Philippines, Cambodia, Thailand, etc.