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Notice of Our Company's Summer Holiday Closure
We are pleased to hear of your continued prosperity. We sincerely thank you for your exceptional support. Our company will be closed for summer vacation during the following period: 【 August 8, 2026 (Saturday) - August 16, 2025 (Sunday) 】 We will resume normal operations on August 17 (Monday). We apologize for any inconvenience this may cause and appreciate your understanding.
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We have uploaded a company introduction video. Through water treatment equipment such as "sludge dewatering machines" and "pressurized flotation devices," we will contribute to a "sustainable society."
We have uploaded a company introduction video to YouTube. From now on, we at Yanagawa Engineering Co., Ltd. will continue to contribute to a sustainable society through water treatment equipment such as "sludge dewatering machines" and "pressure flotation devices."
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Achieves stable operation with low moisture content and accommodates a wide range of sludge with its unique mechanism. 【Screw Press Dehydrator "SH Type"】
Achieved through a unique mechanism: - Compatible with a wide range of sludge - Low moisture content - Stable operation The Screw Press SH type has an application range that is incomparable to previous dewatering machines. Please feel free to contact us for dewatering tests and inquiries.
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We have renewed our company website.
We have renewed our website. We will continue to strive to be a company that is helpful to everyone. Once again, we appreciate your continued support.
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We have added frequently asked questions!
~Additional Items~ ○Regarding sludge analysis items and other terms Q1. SS Q2. DS Q3. n-Hx Q4. Wet We will continue to add information that will be helpful to everyone!
About柳河エンジニアリング
For anything related to dehydrators, please leave it to YANAGAWA. We will assist you at locations nationwide.
Ryuhwa Engineering has been manufacturing sludge dewatering machines for about 50 years since 1970. With our reliable technology cultivated over many years, we support water treatment in factories and water treatment facilities. Additionally, our headquarters (Tokyo), Mie branch, Osaka branch, and Fukuoka branch serve as reliable bases for after-sales service, providing all support consistently in-house. [Company Introduction Video] https://youtu.be/iS3L2ohMA_E?si=YUEiiEX7Jl5cI8jA


![[Case Study of Dehydrator Introduction] A Certain Food Factory](https://image.mono.ipros.com/public/product/image/87f/2000692519/IPROS68366125360351818692.png?w=280&h=280)
![[Case Study of Dehydrator Implementation] A Certain Pharmaceutical Company](https://image.mono.ipros.com/public/product/image/35b/2000692498/IPROS62755409173220150061.png?w=280&h=280)
![[Case Study of Dehydrator Introduction] A certain grinding wastewater treatment company](https://image.mono.ipros.com/public/product/image/198/2000692440/IPROS44182663798150622206.png?w=280&h=280)
![[Case Study of Food Factory] Adoption of a Plate Filter Press for Excess Sludge](https://image.mono.ipros.com/public/product/image/bf6/2000610008/IPROS47081375092512256987.png?w=280&h=280)
![[Case Study of Food Factory] Adoption of a Single-Plate Filter Press for Activated Sludge Treatment](https://image.mono.ipros.com/public/product/image/a6f/2000610005/IPROS78650722017054101636.png?w=280&h=280)