広洋技研 List of Products and Services

The "Reach Filter" is a sand filtration device that filters using gravity-driven downward flow. Through a unique method, it thoroughly cleans the filtration media with ultra-fine bubbles generated within the device and a double washing with water, removing dirt attached to the surface of the sand. In addition to stable treated water quality and cost reduction, it also achieves reduced environmental impact through a system that generates no waste. 【Features】 ■ No need for media replacement (5-year warranty) ■ Generation of fine bubbles ■ No need for backwash tank ■ Stable treated water quality ■ Zero industrial waste *For more details, please download the PDF or feel free to contact us.

• Filtration Equipment

The product is a sand filtration device that plays an important role in the removal of SS (suspended solids) in the finishing process of water treatment. Koyo Giken's Reach Filter uses a unique method to thoroughly wash the filter media with ultra-fine bubbles generated within the device and a double washing with water, removing even the dirt adhered to the surface of the sand. In addition to stable treated water quality and cost reduction, the system does not produce waste, achieving a reduction in environmental impact. Customers can contribute to the promotion of SDGs while enjoying smooth water treatment operations with the Reach Filter. 【Features】 ■ Stable treated water quality ■ Zero industrial waste ■ No need for filter media replacement, 5-year warranty (conditions apply) ■ Powerful cleaning capability of fine bubbles (certified by the Fine Bubble Industry Association) ■ Significant cost reduction possible *For more details, please refer to the PDF document or feel free to contact us.

• Filtration Equipment

The activated carbon adsorption device "Reach Filter" solves the problem of activated carbon solidification due to inadequate cleaning through a dual cleaning process using cleaning water and microbubbles, enabling long-term maintenance of activated carbon performance. By reducing the frequency of activated carbon replacement, it significantly lowers running costs such as filter replacement expenses and industrial waste disposal fees. It is capable of handling a wide range of water treatment applications, from manufacturing water to factory wastewater, as well as drinking water and sewage. 【Features】 ■ Contributes to CO2 reduction ■ Extends the lifespan of activated carbon replacements ■ There are cases where the lifespan of activated carbon used in food company clean water treatment facilities has been tripled (from 1 year to 3 years) ■ Unique cleaning allows effective utilization of micro and sub-micro pores inside the activated carbon ■ Compact design considering installation space ★ You can view product materials with cost reduction case studies and a collection of installation examples of sand filtration systems that include this product by downloading the PDF. (For more detailed information about cost reduction case studies, please contact us) *If you submit the "model selection sheet" included in the product materials, we will propose specifications that meet your requirements.

• Filtration Equipment

We developed this device focusing on the issue of "filter media cleaning" that existed in sand filtration systems. Previous devices performed air and water cleaning as separate processes. This device improves the cleaning effect by conducting both processes simultaneously through W cleaning. The cleaning water contains highly effective microbubbles, which have been technically certified by the Fine Bubble Industry Association (FBIA), an organization under the Ministry of Economy, Trade and Industry. The condition of the filter media after cleaning can also be visually confirmed through a large inspection window. 【Features】 ■ Filter media cleaning using microbubbles (NEW!) ■ No need for filter media replacement (5-year warranty) ■ Stable water quality ■ Easy-to-use touch panel ■ Usable without a backwash tank (space-saving) It also contributes to "safe and hygienic water supply," "effective use of natural resources," and "measures against global warming." *You can view comparison materials and case studies from the "PDF Download."

• Filtration Equipment
• filter

The activated carbon adsorption device "Reach Filter" resolves the issue of activated carbon solidification due to inadequate cleaning through dual cleaning with washing water and air bubbles, enabling long-term maintenance of activated carbon performance. It is suitable for a wide range of water treatment applications, from manufacturing water to factory wastewater, and both drinking and sewage water. By reducing the frequency of activated carbon replacement, it contributes to lower running costs and CO2 reduction. Additionally, when used in conjunction with our "sand filtration system," it is possible to supply treated water that meets drinking water quality standards. 【Features】 ■ Reduction of costs and labor through decreased activated carbon replacement work ■ Prevention of activated carbon solidification due to inadequate cleaning ■ Effective utilization of micro and sub-micro pores within the activated carbon through unique cleaning methods ■ Compact design *We are currently offering materials that introduce the cleaning process and representative water treatment processes (sewage treatment facilities / final disposal sites) with diagrams! For more details, please check the download button. Feel free to contact us with any inquiries.

• Filtration Equipment
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The "Reach Filter" is a sand filtration device with a unique structure that features an inclined filtration surface, resulting in minimal mud ball generation even during long-term processing. A large inspection window located at the center of the device allows for monitoring the internal conditions without the need to stop operation during inspections, thus reducing the need for tool-based work. Since sand cleaning can be performed within the device, there is no need for media replacement, making maintenance easy. Its compact design eliminates the need for large installation spaces. ★ The structure of the airlift has been improved (patent pending). This can suppress media solidification and a decrease in filtration efficiency, making maintenance even easier. 【Features】 ■ No media replacement required! 【5-year warranty】 ■ Large inspection window to check the condition of the media and raw water ■ Patent-protected structure to prevent mud ball generation ■ Easy-to-use touch panel ■ Usable without a backwash tank *You can view benefit comparison materials and case studies from the "PDF Download."

• Filtration Equipment
• filter

Koyo Giken is an environmental engineering company that plans, develops, and sells various equipment themed around the irreplaceable water essential for life on Earth. Utilizing our outstanding technology and experience, along with various wisdoms that care for the Earth and nature, we strive to create products that contribute to water activation and water recycling. We are confident that the water treatment equipment we have developed demonstrates excellent performance in building environmental management systems and can significantly contribute to the environmental activities of the ISO 14000 series. 【Business Activities】 ■ Planning, development, design, manufacturing, construction, and sales of water treatment equipment ■ Planning, development, design, manufacturing, construction, and sales of aquaculture-related facilities and equipment ■ All operations incidental to the above *For more details, please download the PDF or feel free to contact us.

• Water treatment equipment
• Other water treatment equipment
• Wastewater/wastewater treatment equipment

We would like to introduce a case of the filtration system "Reach Filter," which plays an important role in the finishing process of water by removing SS (suspended solids) contained in manufacturing water, factory wastewater, and water treatment such as drinking water and sewage. At a hospital in Sapporo, Hokkaido, it was adopted as a pretreatment for the RO membrane treatment in the "Groundwater Utilization System," providing stable filtered water with high cleaning capability. Additionally, it is designed as a compact unit, saving space. 【Features】 ■ Location: Sapporo City, Hokkaido ■ Application: Pretreatment for RO membrane treatment ■ Filtration Purpose: Turbidity removal, iron removal ■ Source Water Type: Groundwater ■ Model and Treatment Capacity: RFE-500, 500m3/day ■ Filter Media Used: Silica sand *For more details, please refer to the PDF document or feel free to contact us.

• Filtration Equipment
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At a major electric factory in Yamanashi Prefecture, the initial plan was to combine sand filtration and activated carbon filtration. However, by using a single reach filter with a special filtering material that has color removal capabilities, we were able to reduce both initial and running costs. Additionally, due to the high-efficiency cleaning function of the reach filter, we were able to achieve stable treated water quality despite fluctuations in the raw water quality. [Case Study] - Location: Major electric factory in Yamanashi Prefecture - Purpose: Securing cooling water for cooling towers and toilet flushing water - Filtration Objective: Reduction of water supply costs - Type of Raw Water: Groundwater - Model and Treatment Capacity: RFE-500, 500m3/day - Filtering Material Used: Special material for humic color removal *For more details, please refer to the PDF document or feel free to contact us.

• Filtration Equipment
• filter

At an automobile factory in Kanagawa Prefecture, attention has been drawn to the "reach filter" with high cleaning power due to the aging of pressure-type sand filters, and it has been adopted as a safety measure for water treatment. After installation, the operation has been discharging treated water that fully satisfies the initial specifications. Currently, based on the results from the first unit, a second unit has been delivered for on-site recycling. 【Case Study】 ■ Location: Major automobile factory in Kanagawa Prefecture ■ Purpose: Safety and reuse of factory wastewater treatment equipment ■ Filtration Objective: Advanced treatment of wastewater treatment equipment ■ Type of Raw Water: Factory wastewater treatment water ■ Models and Treatment Capacity ・RES-15 750m3/day 1 unit ・RFE-500 500m3/day 1 unit ■ Filter Media Used: Manganese sand *For more details, please refer to the PDF document or feel free to contact us.

• Filtration Equipment

At a major gas company in Chiba Prefecture, the concentration of reducing water varies by area; in low-concentration areas, it is a few mg/L, while in high-concentration areas, it can reach up to 80 mg/L. Conventional sand filtration systems were applied to brine with SS concentrations of approximately 30 mg/L or lower. However, in brine with high SS concentrations, the filter bed became clogged within a short period (a few months), leading to an inability to continue operation (due to insufficient cleaning power). In this situation, by adopting the "Reach Filter," which has a very high filter bed cleaning efficiency, it became completely applicable to brine with high SS concentrations and has been adopted in other high SS concentration areas as needed. [Case Study] ■ Location: Major gas company in Chiba Prefecture ■ Application: Purification of brine in water-soluble gas fields ■ Purpose of filtration: To suppress ground subsidence and maintain the reducing capacity of reducing wells by removing SS from brine ■ Type of raw water: Brine ■ Model and processing capacity: RFE-2000 and others ■ Filter media used: Silica sand *For more details, please refer to the PDF document or feel free to contact us.

• Filtration Equipment
• filter

We would like to introduce a case study of the filtration system "Reach Filter," which plays an important role in the finishing process of water by removing SS (suspended solids) contained in manufacturing water, factory wastewater, and water treatment such as drinking and sewage water. At a major chemical company in Chiba Prefecture, the system was introduced to replace an existing siphon-type sand filter, with the aim of recovering iodine from the brine and returning it underground. The goal is to improve the recovery rate of iodine while maintaining the reduction capacity of the reduction well and suppressing ground subsidence. 【Case Study】 ■ Location: Major chemical company in Chiba Prefecture ■ Application: Purification of brine in a water-soluble gas field ■ Purpose of Filtration: To suppress ground subsidence and maintain the reduction capacity of the reduction well by removing SS from the brine ■ Type of Raw Water: Brine ■ Model and Treatment Capacity: RFE-2000 and others ■ Filter Media Used: Silica sand *For more details, please refer to the PDF document or feel free to contact us.

• Filtration Equipment
• filter

We would like to introduce a case study of the filtration system "Reach Filter," which plays an important role in the finishing process of water by removing SS (suspended solids) contained in manufacturing water, factory wastewater, and water treatment such as drinking water and sewage. At a major chemical plant in Shizuoka Prefecture, by adopting the highly efficient Reach Filter for bed washing, we were able to comply with river discharge standards in response to fluctuations in the quality and quantity of inflow water such as rainwater. 【Case Study】 ■ Location: Major chemical plant in Shizuoka Prefecture ■ Application: SS removal from on-site wastewater and rainwater ■ Purpose of Filtration: Safety (carry-over) measures ■ Type of Raw Water: On-site rainwater and on-site treated wastewater ■ Model and Treatment Capacity: RFE-2500 × 2 units, 5,000 m3/day (maximum) ■ Filter Media Used: Silica sand *For more details, please refer to the PDF document or feel free to contact us.

• Filtration Equipment
• filter

At Sato Food Industry Co., Ltd., headquartered in Niigata Prefecture and known for Sato's rice, we had been using a conventional "pressure filtration system" until now. However, with the expansion of our production facilities, we have adopted a reach filter that has been proven to excel in cleaning efficiency, functionality, installation, maintenance, and economic viability. With this new equipment, we were able to produce higher quality production water by integrating the features of the reach filter into the sand filtration system, in conjunction with an activated carbon filtration system. 【Case Study】 ■ Location: Sato Food Industry Co., Ltd. ■ Application: Purification of industrial water into production water ■ Purpose of Filtration: Improvement of production efficiency and quality through the assurance of high-quality production water ■ Type of Raw Water: Industrial water ■ Equipment and Treatment Capacity: - Sand filtration system (RFE-1500) 1 unit - Activated carbon filtration system (RFC-1500) 1 unit, 1,500m3/day ■ Filter Media Used: Silica sand and granular activated carbon *For more details, please refer to the PDF document or feel free to contact us.

• Filtration Equipment
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At a major dairy factory in Tokyo, rotary filters and cartridge filters had been used for crate cleaning, but severe clogging occurred, leading to leaks of sand and paper fibers, which affected the high-pressure pumps and nozzles, resulting in inadequate cleaning equipment and complaints about crate dirt from retailers. By introducing reach filters, clogging was resolved, allowing for normal crate cleaning, which led to a reduction in maintenance costs for filters and nozzles, industrial water costs, and wastewater costs, as well as an increase in productivity. [Case Study] ■ Location: Major dairy factory in Tokyo ■ Purpose: Reduction of water usage through reuse ■ Filtration Objective: Recovery of crate cleaning machine capacity ■ Source Water Type: Crate cleaning recovery water ■ Model and Treatment Capacity: RF-12 300m3/day ■ Filter Media Used: Silica sand *For more details, please refer to the PDF document or feel free to contact us.

• Filtration Equipment
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At the sewage treatment plant in Gunma Prefecture, treated river water is used for on-site water, and due to unpleasant odors and poor appearance during on-site operations, conventional sand filtration systems were used. However, insufficient cleaning of the sand led to an increase in backwash water, more frequent media replacements, and rising maintenance costs. The introduction of the reach filter has resolved all these issues, and it has been demonstrated through empirical data that it is effective against organic wastewater. [Case Study] ■ Location: Sewage treatment plant in Gunma Prefecture ■ Purpose: Securing on-site water through the reuse of secondary treated water ■ Filtration Objective: Removal of SS and turbidity ■ Type of Raw Water: Activated sludge treated water ■ Model and Treatment Capacity: RF-12 300m3/day ■ Filter Media Used: Silica sand *For more details, please refer to the PDF document or feel free to contact us.

• Filtration Equipment
• filter

We would like to introduce a case of the filtration system "Reach Filter," which plays an important role in the finishing process of water by removing SS (suspended solids) contained in manufacturing water, factory wastewater, and water treatment such as drinking water and sewage. A high-capacity Reach Filter has been adopted for the pretreatment of RO membrane treatment for hot spring water for hotel customers, in order to respond to fluctuations in SS values, providing stable hot spring water. 【Case Study】 ■Industry: Hotel Industry ■Location: Tokyo ■Application: Pretreatment for RO membrane treatment ■Filtration Purpose: SS removal, iron removal ■Source Water Type: Hot spring water ■Model and Treatment Capacity: RFE-200 200m3/day ■Filter Media Used: Silica sand *For more details, please refer to the PDF document or feel free to contact us.

• Filtration Equipment
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The "Reach Filter Delivery Implementation Example Collection" features case studies on the introduction of the sand filtration machine "Reach Filter," which plays a crucial role in the finishing process of water by removing SS (suspended solids) from manufacturing water, factory wastewater, and water treatment such as drinking water and sewage. The cleaning method for the filter media is a unique approach (patented) that removes dirt adhered to the sand and eliminates the cause of mud ball generation, which has been a long-standing issue. It has also been adopted for ground subsidence countermeasures (reduced water) based on its cleaning capability evaluation. [Featured Cases] - Sewage treatment plant in Gunma Prefecture (government agency) - Major dairy factory in Tokyo - Major electrical factory in Yamanashi Prefecture - Major automobile factory in Kanagawa Prefecture - Major food factory in Niigata Prefecture *Due to the popularity of the sand filtration machine Reach Filter, we are looking for sales agents! For more details, please refer to the PDF materials or feel free to contact us.

• Filtration Equipment
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Our company offers a wire belt type "automatic dust removal machine" that continuously captures and removes large amounts of suspended solids and debris from flowing water in a short time. Made of stainless steel, it exhibits high durability. It is also easy to install, including on-site assembly and setup. 【Features】 《Belt-driven Automatic Dust Removal Machine》 ■ The screen surface is made of a lattice wire belt, providing high strength. ■ The drive unit is located above the water, making maintenance easy. ■ There is minimal risk of foreign objects getting caught, allowing for smooth discharge. 《Automatic Dust Removal Machine for Small Hydropower Generation》 ■ High-speed processing with a screen passing flow rate of approximately 2 m/s. ■ Simultaneous operation of capture and removal contributes to the protection and efficiency of generators. ■ Functions effectively as a dedicated leaf removal machine. *For more details, please refer to the materials. Feel free to contact us with any inquiries.

• Dust collector
• Other water treatment equipment

Koyo Giken's "K-3" is an underwater sensor that detects the interface level of sludge in sedimentation tanks of water treatment facilities. It is particularly effective for sludge management to prevent carryover in sedimentation tanks and for the automatic control of process operations, such as efficiently extracting sludge. The interface level is displayed in three stages with lamps, making it easy to understand. 【Features】 ■ Three-stage lamp display for interface level ■ Detection concentration can be set arbitrarily by adjusting the sensor's light emission ■ Output terminals for process control ■ Output terminal for notifying the timing of sensor replacement ■ External signal output from the display panel for unmanned site management *For more details, please refer to the PDF document or feel free to contact us.

• Other water treatment equipment
• Water quality testing
• Other measurement, recording and measuring instruments

The "Net Belt Screen (Safety Filter)" is a safety device suitable for the removal of SS in drainage. It features a sloped screen section with a horizontally extended screen in the upstream waterway. This design ensures that when the water depth in the waterway is shallow, only a portion of the lower end of the screen belt is submerged, reducing the filtration area and significantly decreasing the flow rate, thus resolving traditional issues. Additionally, the screen belt uses a special plastic mesh belt, allowing for the hygienic removal of not only conventional debris but also fish waste, fish scales, and shell fragments in fishery research facilities and fishing ports. 【Features】 - Suitable for SS removal - Sloped screen section with a horizontally extended screen in the upstream waterway - Resolves traditional issues of reduced filtration area and significantly decreased flow rate - Screen belt made of a special plastic mesh belt - Capable of removing fish waste, fish scales, and shell fragments in fishery research facilities and fishing ports *For more details, please refer to the PDF document or feel free to contact us.

• Filtration Equipment

The "Belt Conveyor Type Continuous Automatic Screen (with Sludge Dewatering Machine)" is a device that automatically performs a series of tasks from the collection, dewatering, to storage of the sludge captured by the screen. It features an easy-to-handle screen system for transporting the stored sludge, as well as easy maintenance and inspection. Additionally, it is housed in a sealed casing, making it compact. 【Features】 ■ Capable of removing contaminants that may harm water-based treatment ■ Automatically removes and dewaters screen sludge ■ Dewatered sludge can be bagged ■ The device is durable, corrosion-resistant, and compact ■ Easy to manage *For more details, please refer to the PDF document or feel free to contact us.

• Water treatment equipment
• Other water treatment equipment

The "Belt-Type Automatic Dust Removal Machine (Wire Belt Type)" is a device that continuously captures and removes a large amount of suspended solids and dust particles from flowing water in a short period of time. The screen surface is composed of a lattice (net-like) wire belt that runs endlessly on guide rails, and it has a mechanism for dust removal using flights on the wire belt to collect solid waste. Additionally, due to the adoption of an inclined head frame, the lifted dust particles can be smoothly discharged into conveyors or other transport devices. 【Features】 ■ Low water head loss (large opening area) ■ Prevents all particles larger than the grid width due to its lattice shape ■ High strength of the screen surface ■ No foreign object entrapment (locking) ■ High lifting capacity due to the continuous lifting method *For more details, please refer to the PDF document or feel free to contact us.

• Water treatment equipment
• Dust collector
• Other water treatment equipment

The "Powdered Activated Carbon Automatic Supply Machine" is a simple yet reliable supply device that uses powdered activated carbon with a moisture content of 50% and automatically supplies a constant required amount continuously. It is equipped with a rotatable rake to prevent the very poorly flowing powdered activated carbon in the hopper from solidifying, compacting, or forming bridges. Additionally, there is a powdered activated carbon supply device at the bottom of the hopper, which supplies the powdered activated carbon, drawn in by the rake, in a sheet form through the clearance of a pair of metering rotors. The powdered activated carbon that adheres to the surface of the metering rotors of the supply device is removed by a scraper, allowing for smooth supply of the powdered activated carbon. 【Features】 ■ A device that supplies powdered activated carbon with a moisture content of 50% ■ Equipped with a rotatable rake to prevent the formation of bridges ■ Supplies powdered activated carbon in a sheet form through the clearance of a pair of metering rotors ■ Powdered activated carbon adhering to the surface of the metering rotors is removed by a scraper *For more details, please refer to the PDF document or feel free to contact us.

• Water treatment equipment
• Other water treatment equipment

The "Reach Filter" is an activated carbon adsorption device used to remove chemical substances contained in treated water from manufacturing water, factory wastewater, drinking water, and sewage treatment. To demonstrate adsorption performance, the entire activated carbon in the adsorption tank is fluidized and mixed with washing water and bubbles of air for cleaning, allowing for the washing and removal of SS (suspended solids) adhering to the activated carbon, which can then be discharged outside the adsorption tank. Since the adsorption performance of the activated carbon can be maintained for a long time, running costs can be significantly reduced. It can also be utilized as regenerated carbon, making it an environmentally friendly device that effectively uses resources. 【Features】 ■ Improved adsorption efficiency and reuse of activated carbon ■ Reduced running costs and treatment costs for activated carbon ■ Increased work efficiency ■ Reduced ancillary equipment and maintenance management for the device *For more details, please refer to the PDF materials or feel free to contact us.

• Water treatment equipment

The "Reach Filter" is a device that removes SS (suspended solids) contained in wastewater from factories, as well as in drinking water and sewage treatment, playing an important role in the finishing process of water treatment. It cleans the entire sand layer by moving it in three-dimensional directions—up and down, horizontally, and laterally—completely removing the suspended solids captured in the gaps of the sand. Additionally, it performs simultaneous air cleaning while vigorously scrubbing, removing surface dirt. With the capability of complete cleaning, sand replacement is unnecessary even after five years, and the sand remains very clean overall. 【Features】 ■ Removes dirt adhered to the sand surface ■ Prevents the generation of mud balls ■ Easy operation and management with a touch panel monitor ■ The condition of the filter media and raw water can be observed through a large inspection window ■ Cleaning with raw water *For more details, please refer to the PDF document or feel free to contact us.

• Filtration Equipment
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The "Environmental Conservation Equipment Catalog" features products from Koyo Giken that are active in various water treatment sites. It includes a "Polymer Coagulant Dissolution Device" that continuously supplies powdered polymer coagulants, boasting over 7,000 units delivered, as well as a "Belt-Type Automatic Dust Removal Machine" that captures and removes suspended solids in flowing water. We propose a review of water process equipment from industrial water supply to wastewater, contributing to energy savings, cost reduction, and CO2 emissions reduction. *For more details, please download the PDF or feel free to contact us.

• Dust collector
• Water treatment equipment
• Wastewater/wastewater treatment equipment

The "Wire Belt Screen" is a device that continuously captures and removes a large amount of floating debris and solid materials from flowing water in a short period of time. It excels as a dedicated leaf removal machine, enabling capture and separation that were insufficient with conventional products, thereby protecting generators and improving power generation efficiency. 【Features】 ■ High-speed processing with a screen passing flow rate of 2 m/sec ■ Supports high power generation efficiency with low power consumption ■ Efficiency improvement through simultaneous capture and removal operation ■ The main body and key components are finished in all stainless steel *For more details, please download the PDF or feel free to contact us.

• Other water treatment equipment
• Dust collector

The "Automatic Continuous Dissolution Device for Polymer Coagulants" is a device that stably supplies polymer coagulants and performs continuous dissolution automatically. Stainless steel is used for everything from bolts to nuts to prevent corrosion. The main components are made of engineering plastics, providing excellent durability. To ensure long-term use, we actively promote maintenance and inspection. If you have any questions about usage or need consultation regarding maintenance and inspection, please feel free to contact us. *Currently, we are offering a free "Model Selection Case Study Collection" and "Implementation Results List"! 【Features】 ■ Excellent durability and long lifespan ■ Simple operating method and structure ■ Easy measurement of chemicals ■ Powder feeding method that prevents clumping of chemicals ■ Quality control through thorough moisture prevention *For more details, please download the PDF or feel free to contact us.

• Other physicochemical equipment