日本エンヂニヤ List of Products and Services

The "JJS Series" is a debris removal device that eliminates trash such as fallen leaves and driftwood from waterways, ensuring a stable water intake and stable power generation. The "JJS-A" model has been adopted for the small hydropower generation facility in the Ataki (Itakura area), achieving stable water intake and low-cost installation and operation. In addition, the series demonstrates its performance in various locations, including demonstration model projects for water turbines at hydropower plants and a certain golf course in Nara Prefecture. 【Implementation Results】 ■ Small hydropower generation facility in Ataki (Itakura area) (JJS-A) ■ FY 2017 Yonago Kitano-sawa Water Supply Hydropower Plant Water Turbine Demonstration Model Project (JJS-C) ■ Sakae Village, Nagano Prefecture (JJS-B) ■ A certain golf course in Nara Prefecture (JJS-A-50LA) ■ Gujo City, Gifu Prefecture (JJS-A-10LA) *For more details, please refer to the PDF materials or feel free to contact us.

The "JJS-A" is a product that can be installed on river dams. By installing it in rivers, it simplifies the equipment up to the head tank. Small hydropower generation is determined by the removal of debris, and it is a strong ally for small hydropower generation and agricultural water intake. Additionally, since there are no moving parts, the likelihood of failure is extremely low, and debris flows downstream in the river, eliminating the need for debris disposal. 【Features】 ■ Reduces initial costs ■ No power or electricity required at the intake ■ Reduces maintenance costs ■ Decreases the frequency of cleaning the intake *For more details, please refer to the PDF materials or feel free to contact us.

The "JJS-A" is a product that can be easily installed in waterways to remove debris such as fallen leaves and driftwood. Its special structure, designed to minimize clogging and consider maintenance, achieves both stable water intake and easy upkeep. 【Features】 ■ Stable power generation and ample agricultural water supply ■ Special structure that minimizes clogging ■ Easy maintenance ■ Reduced installation and operational costs *For more details, please refer to the PDF document or feel free to contact us.

The "JJS-B" is a non-powered, non-electric debris removal system that removes leaves and driftwood from waterways, ensuring a stable water intake volume while achieving low installation and operational costs. Thanks to its special structure that minimizes clogging and considers maintenance, it achieves both stable water intake and easy upkeep. It can be installed more easily compared to conventional debris removal devices, thereby reducing the overall introduction and operational costs of the facility. 【Features】 ■ Special structure that minimizes clogging ■ Easy maintenance ■ Reduced installation and operational costs *For more details, please refer to the PDF document or feel free to contact us.

The "JJS-C" is a non-powered, non-electric debris removal system with a high capacity for removing waste such as fallen leaves and driftwood, which increases power output through full water intake and improves the operating rate of the water turbine. By simplifying the structure, initial costs are reduced. Backflow occurs due to the closing operation of the water turbine's guide vanes and valves, contributing to a reduction in maintenance burden by washing away debris. 【Features】 ■ Reduced initial costs ■ Increased efficiency by combining screens at two angles ■ Reduced maintenance burden *For more details, please refer to the PDF materials 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.

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 small-scale water supply facilities such as drinking water supply systems, there may be cases where sedimentation basins cannot be secured after taking water from surface water sources like rivers. Large amounts of sediment flow into the filtration facilities, leading to filter clogging and causing equipment failures, which increases maintenance burdens such as sludge removal work in sedimentation and filtration basins, as well as repair costs for the equipment. To address these issues, our company has developed and started selling a portable small sedimentation tank, "GCP-AK-25M," which can be manually transported. It is installed downstream of the water intake facility to suppress the inflow of sand into the filtration area. With a surface loading rate of 163 mm/min, it can effectively remove sand particles larger than 0.1 mm, thereby reducing the inflow of sediment into the filtration facilities. [Issues] ■ Sedimentation basins cannot be secured ■ Large amounts of sediment flow into filtration facilities *For more details, please refer to the PDF document or feel free to contact us.

This document is a collection of case studies for the "JJS Series Non-Powered and Non-Electric Dust Removal Device." It includes examples such as the installation of a water intake weir at Todakyo Park in Numazu City, Shizuoka Prefecture, the installation of a drop structure in the Ataki area of Gujo City, and the installation of an open channel in Sakae Village, Nagano Prefecture. We also introduce potential installation locations for the dust removal devices and the features of the series. Please feel free to download and take a look. [Contents (partial)] ■ Introduction of JJS-A model case studies - Todakyo Park, Numazu City, Shizuoka Prefecture (water intake weir installation example) - Ataki area, Gujo City (drop structure installation example) - Gujo City, Gifu Prefecture (water intake weir installation example) - A certain golf course in Nara Prefecture (drop structure installation example) *For more details, please refer to the PDF document or feel free to contact us.

We would like to introduce a case where a dust removal device "JJS-A type" was installed at the water intake weir in Todakyo Park, Numazu City, Shizuoka Prefecture. The maximum water usage is 62L/second, and the maximum effective head is 61.7m. The dust removal device began operation in March 2020, and power generation started in April 2021. The equipment utilization rate is over 95%. Please feel free to contact us if you have any inquiries. 【Case Overview】 ■ Maximum water usage: 62L/second ■ Maximum effective head: 61.7m ■ Maximum output: 19.9kW *For more details, please refer to the PDF document or feel free to contact us.

We would like to introduce a case where the dust removal device "JJS-A type" was introduced to the drop structure in the Adaki area of Gujo City. Water flow began in November 2013, and power generation started, supplying energy to greenhouses through autonomous operation. It is used as a power source for lighting and ventilation systems. The quality of shiitake mushrooms has improved, and the harvest yield has increased. Please feel free to contact us if you have any inquiries. 【Case Overview】 ■ Maximum water usage: 17L/second ■ Maximum effective drop: 8.3m ■ Maximum output: approximately 1kW *For more details, please refer to the PDF document or feel free to contact us.

We would like to introduce a case where a dust removal device "JJS-A type" was installed at the water intake dam in Gujo City, Gifu Prefecture. The water started flowing for agricultural use in February 2017, achieving stable water intake. The maximum usage water volume is 10L/second. Please feel free to contact us if you have any inquiries. 【Case Overview】 ■ Maximum usage water volume: 10L/second ■ Purpose of use: Agricultural water *For more details, please refer to the PDF document or feel free to contact us.

We would like to introduce a case where the dust removal device "JJS-A type" was implemented at a certain golf course in Nara Prefecture. Water flow started in April 2019 for the purpose of sprinkler irrigation. The maximum water usage is 50L/second. We have achieved prevention of clogging in the irrigation nozzles. Please feel free to contact us if you have any inquiries. 【Case Overview】 ■ Maximum water usage: 50L/second ■ Purpose: Sprinkler irrigation *For more details, please refer to the PDF document or feel free to contact us.

We would like to introduce an application case using the dust removal device 'JJS-B type' at two open water channels in Takashima City, Shiga Prefecture. This product was jointly developed with the National Agriculture and Food Research Organization and Shinshu University, and it began operation in December 2021. It is installed in a snow melting pump tank during winter, diverting agricultural water. It prevents clogging of the sprinkling nozzles on the road surface. 【Case Overview】 ■ Maximum water usage: 100L/second ■ Effects - Reduces the cleaning burden of sprinkling nozzles - Prevents slipping accidents during snowfall *For more details, please refer to the PDF document or feel free to contact us.

We would like to introduce a case where the dust removal device "JJS-B type" was implemented in the open water channel of Sakae Village, Nagano Prefecture. Water flow and power generation began in July 2014, providing an uninterrupted power supply through autonomous operation. It supplies power for security lights, public restroom lighting, and emergency power during disasters, thereby improving local disaster prevention measures and public safety. Additionally, this product was jointly developed with the National Agriculture and Food Research Organization and Shinshu University. Please feel free to contact us if you have any inquiries. 【Case Overview】 ■ Maximum water usage: 30L/second ■ Maximum effective drop: 11.5m ■ Maximum output: 1.5kW *For more details, please refer to the PDF materials or feel free to contact us.

We would like to introduce a case where the dust removal device "JJS-B type" was installed in an irrigation canal in a certain location in Hiroshima Prefecture. It was installed in May 2023 for the purpose of agricultural water use. The maximum usage water volume is 5L/second, and it will be utilized for smart agriculture. Please feel free to contact us if you have any inquiries. 【Case Overview】 ■ Maximum usage water volume: 5L/second ■ Purpose of use: Agricultural water *For more details, please refer to the PDF document or feel free to contact us.

We would like to introduce a case where a dust removal device, model 'JJS-C', was installed at the head tank of the Nozawa Water Power Plant in Suzaka City. This product was jointly developed with Shinshu University, Fujimaki Construction Co., Ltd., and JSE Co., Ltd. It began water flow testing in May 2018 and started power generation in November 2019. It has reduced the cleaning burden of agricultural water and achieved an annual CO2 emission reduction of approximately 280 tons. 【Case Overview】 ■ Maximum water usage: 430 L/second ■ Maximum effective drop: 36.54 m ■ Maximum output: approximately 115 kW *For more details, please refer to the PDF document or feel free to contact us.

We would like to introduce a case where the dust removal device "JJS-C type" was installed at the head tank of the Suzaka City Yuseiryo Power Plant. Power generation began in November 2020, and during power outages caused by disasters, electricity is supplied to the Suzaka Yuseiryo, a facility supporting people with disabilities. This product was jointly developed with Shinshu University, Fujimaki Construction Co., Ltd., and JSE Co., Ltd. Please feel free to contact us if you have any inquiries. 【Case Overview】 ■ Maximum water usage: 120L/second ■ Maximum effective drop: 26.4m ■ Maximum output: approximately 18.6kW *For more details, please refer to the PDF document or feel free to contact us.

We would like to introduce a case where a dust removal device, model 'JJS-C', was installed at the head tank of the Miori Power Plant No. 2 in Nishi-Awakura Village, Okayama Prefecture. Water flow began in June 2021, and power generation started, achieving an equipment utilization rate of over 80%. The revenue from electricity sales is being utilized for forestry promotion. The maximum water usage is 400L/second, and this product was jointly developed with Shinshu University, Fujimaki Construction Co., Ltd., and JSE Co., Ltd. 【Case Overview】 ■ Maximum water usage: 400L/second ■ Maximum effective head: 66.43m ■ Maximum output: approximately 199kW *For more details, please refer to the PDF document or feel free to contact us.

We would like to introduce a case where the dust removal device "JJS-C type" was installed in the head tank of the Sasagawa Power Plant in Asahi Town, Toyama Prefecture. This product was jointly developed with Shinshu University, Fujimaki Construction Co., Ltd., and JSE Co., Ltd. The revenue from electricity sales will be utilized for the renewal and maintenance of water supply facilities. The maximum output is approximately 199 kW, and the maximum effective head is about 105 m. Please feel free to contact us if you have any inquiries. 【Case Overview】 ■ Maximum water usage: 280 L/second ■ Maximum effective head: approximately 105 m ■ Maximum output: approximately 199 kW *For more details, please refer to the PDF materials or feel free to contact us.

We would like to introduce a case where the dust removal device "JJS-C type" was installed in the head tank of the Gorohebi Water Supply Hydroelectric Power Plant in Nagano Prefecture. This product was jointly developed with Shinshu University, Fujimaki Construction Co., Ltd., and JSE Co., Ltd., with a maximum water usage of 350L/second and a maximum effective drop of 43.08m. Power generation began in April 2023, and part of the revenue from selling electricity will be used for community coexistence and water management. 【Case Overview】 ■ Maximum water usage: 350L/second ■ Maximum effective drop: 43.08m ■ Maximum output: 105kW *For more details, please refer to the PDF document or feel free to contact us.