日本エンヂニヤ List of Products and Services

The "WSS Water Screen" is a water intake screen that can be installed by improving existing intake weirs. Thanks to its unique structure and special screen developed in-house, it continuously washes away fallen leaves and sediment mixed in river water while taking in water, making it less prone to clogging and ensuring a stable water intake volume. Compared to conventional water intake methods, it frees you from frequent cleaning of the intake, significantly reducing the burden of maintenance and management of water intake facilities. 【Features】 ■ Less prone to clogging ■ Easy maintenance ■ Small installation space ■ Easy installation on existing weirs ■ Reduced construction costs *For more details, please refer to the PDF document or feel free to contact us.

The "WSS Water Screen" is a product that allows for surface water intake. It adopts a rear water intake method using our unique technology of a special screen. In addition to its structure that is resistant to clogging, maintenance can be performed with simple tasks, significantly reducing the burden of managing and maintaining the water source. The compact design of the main unit makes it easy to install on existing weirs, allowing for effective utilization of the equipment. 【Features】 ■ Resistant to clogging ■ Easy maintenance ■ Small installation space ■ Easy installation on existing weirs ■ Low construction costs *For more details, please refer to the PDF document or feel free to contact us.

The "WSS-B-25M" is a product designed for small-scale water supply facilities that can draw drinking water. By washing the screen surface while drawing water, it is less likely to become clogged with leaves and sediment, thereby reducing maintenance burdens. When using the optional U-shaped ditch, it is possible to reduce construction costs. 【Features】 ■ No need for frequent cleaning of the intake ■ Contributes to reducing maintenance burdens ■ Draws water while washing the screen surface ■ Less likely to become clogged with leaves and sediment ■ Cost reduction in construction (when using the optional U-shaped ditch) ■ Ultra-compact and can be installed in a space-saving manner *For more details, please refer to the PDF document or feel free to contact us.

In rural mountain settlements, water supply facilities often source water from deep mountain streams, typically extracting it from narrow valleys with steep slopes. Due to these geographical conditions, it is difficult for heavy machinery to access the area, making it impossible to construct concrete intake dams, and water is extracted using methods that are vulnerable to flooding and shifting stones. Our surface water intake device, the "Compact WSS Water Screen," is designed to be compact, allowing it to be securely fixed to existing dams with anchor bolts using a dedicated mounting frame, eliminating the need for civil engineering work with heavy machinery. Additionally, weighing approximately 6 kg, it can be manually transported, and it is also possible to install the intake device directly in the stream using lightweight resin U-shaped gutters. [Challenges] ■ In some locations, it is not possible to construct concrete intake dams. *For more details, please refer to the PDF document or feel free to contact us.

When taking water from rivers, it is necessary to implement measures to prevent debris such as gravel and fallen leaves from flowing in along with the water. Cleaning is challenging, especially in locations where the water source is deep in the mountains and difficult to access by vehicle. In particular, during late autumn when fallen leaves increase, the frequency of cleaning doubles, further increasing the maintenance burden. Our surface water intake device, the "WSS Water Screen," addresses these issues. By installing it on existing weirs, the frequency of cleaning at the intake point decreases even during the leaf-fall season, significantly reducing the maintenance burden. [Challenges] - Instability in water intake due to blockage at the water source intake - Difficulty in cleaning when taking water from rivers - Increased cleaning frequency in late autumn due to fallen leaves, leading to a greater maintenance burden *For more details, please refer to the PDF document or feel free to contact us.

In a river with a very high flow of fine sand, frequent cleaning of the sedimentation basin was necessary due to the previous method of water extraction. Additionally, leaves stuck to the wire mesh covering the intake, causing clogging and a decrease in water extraction volume. As a result, we were going to the water source almost daily to perform mud removal and clean the wire mesh. Furthermore, during winter, with snow accumulation exceeding 2 meters, snow removal was required to approach the water source, which became a significant burden. Therefore, we installed our "Water Screen." The amount of sand flowing into the sedimentation basin has decreased, significantly reducing the frequency of cleaning. In particular, the reduction in the number of cleaning operations during winter has greatly alleviated the burden of maintenance. [Overview] ■ Location: Somewhere in Hokkaido ■ Installation Period: Fiscal Year 2016 ■ Construction Overview: 3 units of WSS-5 type *For more details, please refer to the PDF document or feel free to contact us.

Normally, it is a calm river with clear water flowing, but when landslides occur due to typhoons or heavy rainfall, the intake can be destroyed and buried with sediment. This has happened many times. Therefore, a secondary waterway was established at the intake dam to return river water to the main stream. A concrete protective wall was installed at the inflow section of the secondary waterway to protect the "WSS Water Screen" from direct impact by rocks. With the introduction of this product, the inflow of sediment has decreased, allowing for stable water intake, which has significantly reduced the burden of daily water source management. 【Overview】 ■Location: Tarumizu City, Kagoshima Prefecture ■Implementation Period: Fiscal Year 2008 ■Construction Overview: 3 units of WSS-6 type *For more details, please refer to the PDF document or feel free to contact us.

Normally a clear stream, but when it floods, there is a significant amount of sediment flow. In this river, the water intake using the existing catchment basin frequently became blocked, requiring regular removal of fallen leaves and sediment. To reach the water source, one had to climb a rocky, fast-flowing area, which posed dangers and became a significant burden for the elderly managing it. Therefore, a water screen "WSS-B-25M" was installed. The frequency of fallen leaf removal and sediment cleaning at the water source has been greatly reduced, and even during heavy rains, it can maintain a stable and sufficient water intake without blockage. 【Overview】 ■ Location: Nishimera Village, Koyu District, Miyazaki Prefecture ■ Installation Period: Fiscal Year 2018 ■ Construction Overview: WSS-B-25M x 1 unit *For more details, please refer to the PDF document or feel free to contact us.

Until now, we had been using riverbed-embedded porous pipes for water intake, and the intake volume had gradually decreased due to clogging and sediment accumulation. As a result, it was necessary to perform backwashing every 3 to 4 days during good weather and each time during rainfall, which placed a significant burden on the maintenance of the water source. By adopting the "WSS Water Screen," clogging has been eliminated, and the need for backwashing has been removed, allowing us to stably secure sufficient intake volume. In Toyota City, there are more than 20 installations throughout the city, contributing to stable water intake. [Overview] ■ Location: Toyota City, Aichi Prefecture ■ Installation Period: Fiscal Year 2008 ■ Construction Overview: WSS-6 type × 2 units *For more details, please refer to the PDF document or feel free to contact us.

The "WSS Water Screen" is a surface water intake device designed for water supply facilities. Our unique backwater intake method and special screen structure suppress the intrusion of leaves and sediment during water intake, and the screen surface is cleaned by washing it with excess water. This allows for stable water intake while preventing clogging. Traditionally, cleaning and emergency responses due to clogging at the intake point were frequent during rainy seasons or when there were many fallen leaves, but the introduction of the WSS has significantly reduced the number of cleaning operations, easing the maintenance burden on-site. The product accommodates daily volumes from 25 m³ to 5000 m³. The WSS for 25 m³ is compact and lightweight, making it suitable for existing weirs and limited installation spaces. Using optional U-shaped gutters can reduce construction costs. The WSS for 5000 m³ is a large-capacity model, making it suitable for use in water supply systems. Currently, it has been introduced in over 1,300 water supply facilities nationwide and is adopted by many municipalities as a reliable and proven product.