ゲミュージャパン List of Products and Services

When manufacturing eye ointment, it is necessary to pay attention to optimally mixing multiple ingredients while maintaining a sterile condition. Therefore, we have automated the system by equipping diaphragm valves specialized for sterility with accessories such as combination switches.

The wastewater treatment process for solar cell wafer manufacturing involves the treatment of wastewater containing various components generated from the processing of used slurry. The wastewater mainly contains oils, acids, alkalis, and heavy metals, and may also contain a significant amount of solids. To dispose of such wastewater in accordance with legal regulations or to discharge it into the sewage system, appropriate pretreatment is necessary. By filtering and neutralizing the raw water and then passing it through a reverse osmosis system, it can be discharged into the sewage system.

The handling of slurry can be divided into three main steps: - Adjustment and mixing - Supply and transport - Removal and recovery GEMÜ products are designed with a low-resistance sheet shape that does not impose a load on both the valve and the fluid. All materials in contact with the fluid are made of PTFE or PFA, providing sufficient chemical resistance and high durability against the abrasiveness of slurries containing abrasive particles.

In addition to plastic valves and flow meters, GEMÜ also excels in stainless steel components that efficiently transport slice slurry with low load. GEMÜ's valve design expertise has been developed through many years of experience in the stainless steel valve sector.

"Industrial wastewater treatment" is a process for treating or reusing wastewater generated in industries such as food production, brewing, and chemical manufacturing. The purposes of wastewater treatment are varied, including recycling back to the process, supplying water to receiving tanks, and discharging into sewage systems. In manufacturing, some companies emphasize the closure of various manufacturing processes and the reuse of raw materials. The reuse of raw materials not only reduces environmental impact but also significantly contributes to cost reduction. With extensive experience and a wide range of products, our company consistently provides appropriate technologies and products for diverse applications. [Main Treatment Methods] ■ Wastewater treatment in the solar cell wafer manufacturing process ■ Wastewater treatment in plating processes ■ Wastewater treatment in the food industry, etc.

The manufacturing of solar cells also incorporates a wet process, where the chemical resistance of the components is prioritized over maintaining the purity of the fluids. GEMÜ offers a wide range of PFA, PVDF, and PP components.

"Water treatment" refers to the process of treating groundwater to meet the standards for drinking water. Our company provides high-quality components by using only carefully selected materials and checking them through a quality control system. To operate treatment facilities efficiently, all products used must be compatible with their respective usage conditions. Our long years of experience enable us to achieve this. 【Raw Water Treatment Process】 ■ Precipitation or coagulation of suspended solids ■ Adsorption of dissolved organic matter using activated carbon ■ Ultrafiltration (UF) ■ Sterilization by chlorine addition or ultraviolet irradiation, etc.

"Desalination" is one of the effective methods to meet the water demand associated with the world's population growth, and our company offers various technologies and systems, as well as products that comply with drinking water standards. Desalination of seawater requires pretreatment. The pretreated seawater is sent to the desalination process, where it is desalinated using methods such as evaporation or reverse osmosis. Our company proposes equipment and control systems for supplying desalinated water with re-added minerals to the water supply facilities as drinking water. 【Treatment Methods】 ■ Reverse osmosis membrane filtration ■ MSF method (Multi-Stage Flash) ■ MED method (Multi-Effect Distillation), etc.

"Ultrafiltration (UF)" is an established method for treating drinking water, suitable for obtaining drinking water from various raw water sources. A slight pressure (< 0.1 MPa) is applied to the water to be treated, and it is passed through a permeable membrane with a pore size of approximately 0.01 μm. This allows for the removal of extremely fine particles, suspended matter, pollen, bacteria, and even viruses. Dissolved substances such as hardness salts, minerals, or molecules, as well as low molecular weight substances, pass through the membrane along with the water.

"Ion exchange" is a method of treating drinking water that partially deionizes it by passing it through layers of various ion exchange resins. Groundwater can contain high levels of alkaline earth ions, carbonates, and sulfate ions depending on the location. Hard water is a significant issue not only for households but also for trade and industry, and it is necessary to remove the salts that cause hardness from drinking water. Deionization can reduce nitrates, sulfates, bicarbonates (HCO3-), and the calcium and magnesium that cause hard water.

The treated drinking water is sterilized by far ultraviolet (UVC) irradiation before entering the water supply system. This inactivates any remaining microorganisms in the water and suppresses their proliferation. The ultraviolet device has a stainless steel irradiation chamber, and the ultraviolet lamp is housed in a quartz glass protective tube and incorporated into the reaction chamber.

The "activated sludge method" is a wastewater treatment process that involves placing the water to be treated in an aeration tank, where oxygen is introduced to facilitate contact with microorganisms to remove organic impurities. During the process of decomposition of substances in the wastewater, microorganisms proliferate, resulting in the generation of excess sludge. The purified water and sludge are separated in the final settling tank, and a portion of the separated biomass is returned to the aeration tank. The remainder is sent to the sludge treatment process, while the purified water overflows the weir and enters the next treatment stage or receiving tank.

The "fixed bed filtration method" is a wastewater treatment method in which the aeration zone and the non-aeration zone are physically separated, allowing biological wastewater treatment, biomass retention, and solid filtration to occur within a single reaction tank. Unlike conventional activated sludge methods, bacteria are not freely suspended; instead, they are attached as a biofilm to balls made of expanded clay or plastic (such as polystyrene). The bacteria attached to the fixed bed convert contaminants into biomass. This biomass is retained on the filter media along with the solids present in the wastewater.

Reverse osmosis (RO) is a seawater desalination method that reverses the natural process of osmosis and consumes less energy compared to distillation. High pressure (5.5 to 8 MPa) is applied to seawater, allowing only water molecules to pass through a semipermeable membrane while blocking dissolved salts. The water that passes through can be used as drinking water.

The MSF method (Multi-Stage Flash Distillation) is a seawater desalination method primarily adopted in places where surplus steam can be used as a heat source. The feedwater is heated in several stages. The brine passes through a series of evaporation chambers where the pressure gradually decreases. The generated steam is condensed in a heat exchanger to produce drinking water while simultaneously preheating the incoming seawater. The water that has gone through the final stage is sent to the next treatment process.

The MED method (Multi-Effect Distillation) is a seawater desalination process that utilizes the surplus heat from adjacent power plants and evaporates under progressively increasing negative pressure. The feedwater is repeatedly sprayed into heat exchange tubes that are heated from the inside by condensing steam through several stages. After evaporation, the water is condensed in the heat exchange tubes of the next chamber, and the latent heat is recovered. The distilled water obtained in this manner is extracted from the system.

The wastewater treatment process for plating involves the addition of alkaline agents such as caustic soda to wastewater containing metal ions, cyanide, chromium, and salts to separate the metals. Carbonates or sulfides may also be used as precipitating agents. Toxic anions are decomposed through oxidation or reduction.

"Water treatment in the food industry" is an industrial wastewater treatment process that deals with wastewater containing a high amount of organic matter. In the food industry, wastewater containing a lot of organic matter is generated in every sector. Various methods are required for its treatment, including the separation of fats, de-emulsification, sludge treatment, and neutralization. In the neutralization system, it is necessary to constantly monitor the pH level of the wastewater, and it must be kept within the range of 6.5 to 9.5 before being discharged into the public sewer system. Neutralization is carried out by sending the wastewater into a buffer tank and stirring it.

"Process water" is an important factor that influences systems in the industrial sector, requiring water with appropriate quality that has specific chemical properties suitable for particular processes and does not damage equipment components. Our company provides highly reliable valves suitable for handling various types of process water and chemical agents.

"Pure water and ultrapure water" are necessary in the pharmaceutical and biotechnology industries for the production of pharmaceuticals and materials, as well as in the microelectronics and semiconductor industries. Since pure water significantly affects product quality and manufacturing process efficiency, the plant components are subject to extremely strict requirements. Our company offers diaphragm valves specifically designed for use in ultrapure water treatment and supply equipment, as well as process equipment.

The power plant has various process water circuits, and corresponding purification treatment of raw water and pre-treatment for discharging wastewater into the sewer are necessary. Our company provides valves for supplying water to various treatment processes.

In boiler equipment, corrosion and sedimentation caused by dissolved salts in water are problematic. To avoid these issues, various requirements are imposed on the quality of boiler water based on the operating methods and structure of the steam generation equipment. Our company provides valves for supplying water and chemicals to boilers.

"Highly purified water (HPW)" is generally produced in the final stage of manufacturing by removing particles, bacteria, and pyrogens, and by installing a membrane filtration system to maintain the quality of the purified water. "Purified water (PW)" is produced by combining membrane separation methods and ion exchange methods, while the electric regeneration type pure water device (EDI) combines both of these methods for production. We offer diaphragm valves specifically developed for use in ultra-pure water treatment and supply equipment, as well as process equipment.

The production of water for injection (WFI) uses multi-purpose can-type and thermal compression distillers according to the required amount and temperature of distilled water. The "thermal compression" method pressurizes the generated steam using a heat pump, raising the temperature from 100°C to 140°C, and utilizes it for heating the supply water. We offer diaphragm valves specifically developed for use in ultrapure water treatment and supply equipment as well as process equipment.

Ultra-pure water (UPW) is widely used in the manufacturing processes of semiconductor and solar cell wafers. The abrasives that adhere to the wafer surface are removed during the cleaning process and are washed again with ultra-pure water in the final stage. Cleaning with ultra-pure water is also necessary to remove residues generated during the subsequent etching process. Maintaining the wafer surface clean during such manufacturing processes leads to maximizing power generation efficiency. We offer diaphragm valves specifically developed for the treatment and supply of ultra-pure water, as well as for use in process equipment.

In many high-tech fields, the purity of process fluids determines the quality and quantity of the products. GEMÜ products are responsible for fluid control in cleaning, coating, etching, and filling processes within production facilities. GEMÜ's strengths in the chemical supply sector lie in its extensive lineup that caters to various applications and its high durability that does not compromise fluid purity.

In the semiconductor industry, organic solvents are used for the dissolution and cleaning of materials. The solvents used for cleaning are particularly corrosive and difficult to handle, so valves are required to have high chemical resistance. GEMÜ offers a range of products that combine high Kv values and chemical resistance. To maintain purity, the products are generally made of stainless steel and PFA.

In the high-tech industry, the final quality of products is determined by the purity of water known as ultra-pure water or pure water. GEMÜ's high-purity diaphragm valves have been developed for the processing, transportation, and supply of ultra-pure water, as well as for use in process lines. Additionally, not limited to the high-tech industry, GEMÜ offers a wide range of products for equipment related to water treatment.

Process wastewater is diverse, requiring high processing capabilities from equipment and components. While new production processes increase the physical and chemical environmental burden of wastewater, the demands for reducing emissions and meeting water quality standards are also becoming stricter. GEMÜ offers components made primarily of PP, PVDF, and PFA that are optimal for wastewater treatment, tailored to the types, temperatures, and pressures of process wastewater.

GEMÜ's valves, measuring instruments, and control systems do not cause material leaching even when exposed to corrosive chemicals used in wet processes, maintaining high fluid purity. GEMÜ offers PFA diaphragm valves, block valves, pressure gauges, and ultrasonic flow meters.

From both the perspectives of procurement costs and reducing environmental impact, slurry recovery is essential. For this application, we recommend plastic diaphragm valves and metal diaphragm valves from GEMÜ.

Applications using ultra-high purity solvents typically use stainless steel. GEMÜ's stainless steel valves achieve high sealing performance due to their optimized body shape. Additionally, both the actuator and body are highly resistant to chemicals, allowing for safe use.

GEMÜ's multi-port block valve features a highly flexible compact structure and the resulting low cost. One block has the functionality of multiple valves. You can choose from stainless steel or plastic materials.

In the semiconductor manufacturing process, a large number of corrosive chemicals are used, so most of the wastewater needs to be chemically neutralized. Various fluoropolymer valves from GEMÜ, which have high chemical resistance, are used for the treatment of wastewater generated from these processes.

We can offer GEMÜ products made of PVDF and PP, manufactured under a strict management system, for the handling of ultra-pure water related to product quality.

This application uses GEMÜ's PFA valves, fittings, and measuring instruments. With high-quality materials and a metal-free structure, it does not compromise the purity of the fluids.

In general industrial fields that use large amounts of chemical fluids, various fluoropolymer components from GEMÜ can be used. Valves are available in sizes up to 100A (4').

In the semiconductor industry, lines that use ultra-high purity solvents have advanced requirements in terms of both chemical resistance and cost. GEMÜ offers a wide range of PFA products that combine high flow capacity with excellent economic efficiency.

GEMÜ can also offer versatile valves for controlling and measuring water flow made of PVDF and PP. Additionally, the unique plastic multi-port block valve is ideal for saving space in complex piping systems.

This application uses GEMÜ's PVDF and PP valves. High-quality materials and a metal-free structure are suitable for handling deionized water.

In industrial production and other areas that use large amounts of water, a correspondingly large amount of wastewater must be treated. To handle large volumes of highly contaminated wastewater, GEMÜ can offer butterfly valves, diaphragm valves, control valves, ball valves, measuring instruments, and control systems.