Environmental technology verification began in 2003, and 671 technologies have been verified so far (as of December 2023).
The number of verified technologies in each field is as follows.
A verification report (including verification statements) was created for each verified technology.
Verification reports include performance verification test results, and meet stringent quality assurance and peer review requirements for environmental technology verification.
A summary of the latest verified technologies and their verification reports (including verification statements) is shown below (those certified between 2019 and 2023).
Please note that the Ministry of the Environment, Japan does not guarantee the English translation in the following reports.
The 671 verified technologies have been registered and published on the Environmental Technology Verification program website in Japanese .
（Japanese website）https://www.env.go.jp/policy/etv/verified/index.html
| Water and soil environment conservation technology field | |||||
| Verification number | Technology name | Applicant | Technology summary | Verification Reports |
Verification Statements |
| 140-2304 | NH drain | ARC-NOHARA CO.,LTD. | This technology solidifies recycled aggregate using a urethane adhesive, making it retain its strength, and molds it into a porous shape, which renders it highly permeable. Since this technology allows water to pass through much more efficiently compared to the crushed stone base of artificial turf fields, installing this technology underneath the crushed stone base or on the outer edges will enable rainwater to quickly collect inside the NH drain and to be directed away. The pore size produced by this technology is small enough compared to plastic fillers (about 1-2 mm in size) or artificial grass blades (about 1.5 mm in short diameter) so that only rainwater, for the most part, is drained, without such other matter passing through. In addition, this technology, which is installed on the outer edges, features a raised edge that prevents fillers and other materials suspended by rainwater from spilling out of the field. This functional aspect enables this technology to suppress runoff of material such as artificial turf fillers, which are pointed to as a cause of microplastic pollution of the environment. | in preparation Japanese Report | in preparation Japanese Report |
| 080-2001 | Environmental Restoration Ultraviolet Irradiation with Flocculant System | Non-Profit Organization on Bio-ECO Technology Research Center | This technology is aimed at eutrophic lakes and marshes where blue-green algae occur. It purifies water by the dual methods of killing cyanobacteria, the species that causes blue-green algae, using short-wave ultraviolet (UV-C) irradiation, and adsorbing and settling dead cells using a coagulant (PAC). Lake water with cyanobacteria and other algae growth is collected, after which PAC is added and mixed into it in the coagulant addition chamber, and treated with UV-C irradiation in the UV irradiation chamber. Since the formation of blue-green algae is inhibited through the dying off of cyanobacteria in this process, and since the treated flocs settle easily, the water in the lake becomes clearer. No ecological effects from the release of flocs have been visually observed, and there is no need to collect sludge. Also, this technology does not require a large area for its installation. |
in preparation Japanese Report | in preparation Japanese Report |
| 020-1901 | Amagi anti-firestone high-speed trickling filter and activated sludge method combined plant | SAWAMOTO SHOJI | This technology aims to reduce the environmental impact of organic pollutants on public waters by treating organic wastewater generated from facilities such as food factories using a trickling filter that uses Amagi anti-firestone as a filtering material, combined with an activated sludge process. The wastewater treatment facility consists of a flow control tank, a trickling filter tank, an activated sludge tank, and a sedimentation tank. The trickling filter tank consists of a filter tank in which fire-resistant stone from Amagi is used as a filtering material for the filter bed and a circulation tank in which the sprayed wastewater accumulates. The wastewater circulates from the circulation tank to the filter tank. Treating organic wastewater like this can reduce the environmental impact on public waters. Since trickling filter tanks are installed as pre-treatment facilities for activated sludge tanks, this technology can be retrofitted to existing wastewater treatment facilities. |
in preparation Japanese Report | in preparation Japanese Report |
| 020-1902 | Sludge improvement of water quality technology by numerous hole stone taking root enzymes | Uetabiseibutsu,LTD | This technology utilizes GS bacteria, which consist of bacteria (bacillus, lactobacillus, and nitrifying bacteria) and enzymes (proteolytic enzymes, lipolytic enzymes, carbohydrate-degrading enzymes, and alcohol-degrading enzymes). Liquid containing GS bacteria is sprayed in ponds to degrade organic matter in the water, and porous natural mineral stones loaded with live GS bacteria are scattered at the bottom of the ponds to degrade organic matter in the sediment, thereby improving the quality of the water and of the sediment and revitalizing natural purification mechanisms. | in preparation Japanese Report | in preparation Japanese Report |
| Atmospheric environment conservation technology field | |||||
| Verification number | Technology name | Applicant | Technology summary | Verification Reports |
Verification Statements |
| 140-2302 | FT-eco (Ru) Catalyst | FURUYA METAL Co.,Ltd. | This technology, in which ruthenium is supported on mesoporous silica, can remove methyl mercaptan and ammonia, which are designated malodorous substances under Japanese law, without the need for large-scale machinery, equipment, or external energy. This technology comes in the form of a pellet-shaped catalyst of around 1.5 mm in diameter and 4.5 mm long. The structure consists of mesoporous silica with an average pore size of 1 nm to 50 nm (BET specific surface area of 300 to 2000 m2/g) supporting particles containing ruthenium (Ru) that are 1 to 4 nm in diameter, which are formed into pellets. Methyl mercaptan and ammonia are catalytically adsorbed and decomposed on the surface of ruthenium nanoparticles, whose particle sizes are nanometer-order controlled and which have a high specific metal surface area. |
in preparation Japanese Report | in preparation Japanese Report |
| 061-2101 | Water-based urethane adhesive | AUTO CHEMICAL INDUSTRY CO.,LTD. | This technology features a water-based urethane adhesive that requires no open time and that can reduce volatile organic compound (VOC) air pollution, preventing contamination of the work environment and indoor air. This technology mainly consists of a urethane emulsion in which a polymeric urethane resin is uniformly dispersed in water. Since the system is designed in such a way that the main component solidifies when water, which is the medium, infiltrates the substrate and dries, the substrate should be water-absorbent material, such as concrete, mortar, or wood. |
in preparation Japanese Report | in preparation Japanese Report |
| 140-2003 | Cassette type MoCobee CT/ MoCobee RE |
COMOTEC CORPORATION | This technology features a cassette-type soot removal device (Diesel Particulate Filter (DPF)) that can be easily loaded and unloaded. In order to regenerate the DPF, the DPF cassette is removed and heated using the heater included in the filter regeneration device. Since an oxidation catalyst is unnecessary, this can be installed in engines that use high-sulfur fuel or that use engine oil with a large amount of additives. | in preparation Japanese Report | in preparation Japanese Report |
| 150-1901 | ISEC type deodorizing device | issin.co.ltd | This technology consists of a system that combines a catalytic wet oxidation cleaning tower that does not require an acid cleaning tower, a device that generates sodium hypochlorite (electrolysis tank), and a sulfur scaling inhibitor (sulfur buster). Compared to existing chemical cleaning systems, this system is extremely compact, uses no acidic chemicals (such as sulfuric acid), generates all of its own sodium hypochlorite, and moreover, is expected to significantly reduce the amount of sodium hypochlorite and sodium hydroxide used. | in preparation Japanese Report | in preparation Japanese Report |
| Resource circulation conservation technology field | |||||
| Verification number | Technology name | Applicant | Technology summary | Verification Reports |
Verification Statements |
| 140-2201 | Artificial silica-based sand manufacturing technology・Artificial silica-based sand | ASAHI CO.,LTD. | This technology uses waste glass from glass originally mainly made of mineral-derived silica as material to produce artificial silica sand, using a sizing mill manufactured with our proprietary low-energy, low-cost technology. Artificial silica sand produced by this technology has properties comparable to naturally occurring sand, such as small grain size, rounded edges, high permeability, and inert properties due to the absence of mixed-in organic matter. Artificial silica sand thus manufactured can produce the effects listed above because it has the same properties as naturally occurring sand. | in preparation Japanese Report | in preparation Japanese Report |
| 140-2001 | Disinfectant generation technology for recycling by-product salt of leachate | KUBOTA ENVIRONMENTAL SERVICE CO.,LTD. | This technology is designed to produce sodium hypochlorite, which is mainly used as a disinfectant, by electrolyzing highly concentrated saltwater generated in the process of desalinating landfill leachate. The anode produces mainly chlorine and the cathode produces sodium hydroxide, which are mixed in the electrolysis tank to produce sodium hypochlorite. The sodium hypochlorite produced based on this principle can be used as a disinfectant at facilities such as sewage treatment plants. |
in preparation Japanese Report | in preparation Japanese Report |
| Climate change mitigation technology field | |||||
| Verification number | Technology name | Applicant | Technology summary | Verification Reports |
Verification Statements |
| 140-2303 | Energy saving BLOWER "TBS/RSH series" |
TAIKO KIKAI INDUSTRIES CO.,LTD. | This technology comes in the form of aeration blowers used in water treatment facilities that reduce power consumption compared to conventional machines, thereby helping to conserve and improve the environment. This technology complies with the RoHS Directive, uses trivalent chromium-plated bolts, and does not contain any hazardous substances designated by law. The pulley-side bearings are grease-filled, eliminating concerns about environmental contamination around the machine due to the leaking of grease. The filter used in the silencer is made of stainless steel, which can be reused by air washing, etc., thereby reducing waste and lessening the impact on the environment. In this technology, the two impellers rotate without contact, maintaining a minuscule distance from the inner wall of the casing and from each other, which causes gas to flow back to the low-pressure side due to the gap. The amount of this reverse flow is called the leakage volume, and the leakage volume increases or decreases depending on the total area of the gap. In this technology, the leakage is minimized by reducing the internal gap, and with optimized rotation speeds (high-speed rotation), it improves volumetric efficiency and significantly reduces power consumption. |
in preparation Japanese Report | in preparation Japanese Report |
| 140-2306 | Drain suction recovery device with iron removal function and temperature control device "Eco Mulder" |
VICTORTOKUHAN CO,LTD | This technology expands the possibilities for drained water to be reused as warm water, which is disposed of as wastewater or steam (flash steam) in many steam boiler plants, thereby reducing the amount of fuel needed for boiler combustion and reducing CO2 greenhouse gas emissions during boiler combustion, thereby lessening the impact on the environment. Operating the pump agitates the water inside the tank to stabilize the temperature at the top and bottom of the tank, and, by creating negative pressure at the drain suction port with the ejector, it is mixed with circulating water, which is then passed through a permanent magnet to reduce damage from iron rust. It is also possible to supply hot water with a maximum temperature setting to secondary machines from that pump circulation line. The temperature of the water inside the tank and the circulating water is kept below the maximum setting by a temperature-controlling device. |
in preparation Japanese Report | in preparation Japanese Report |
| 140-2202 | MSCraft | MIZUNO CORPORATION | This technology produces pile that contains solar reflective pigments, which reflect solar radiation and lower the surface temperature of the pile. In addition, the specially crimped pile covers the filler, making it difficult for sunlight to reach it, thereby preventing the filler from getting hot. These aspects suppress the rise in surface temperature and heat retention of artificial turf playing fields, which can get especially hot during the summer, and are thereby expected to contribute to measures aimed at mitigating heat islands. Furthermore, the structure of the specially crimped pile covering the filler reduces turf filler runoff. | in preparation Japanese Report | in preparation Japanese Report |
| 140-2203 | Sensible heat latent heat separation air conditioning “Desiccant Megacool” | Earth Clean Tohoku CO.,LTD | This technology, by separating sensible and latent heat in the air, is capable of creating temperature and humidity conditions that cannot be achieved with ordinary air conditioners. In addition, since the process is powered by heat, it effectively utilizes renewable energy and unused waste heat, and is CFC-free and highly environmentally friendly. The system engendered by this technology consists of a transport fan, desiccant (dehumidifying) rotor, heating coil, and indirect evaporative cooler (MegaCool), with solar heat as the renewable heat source. During dehumidification and cooling, outside air is drawn in, the moisture in the air is adsorbed and removed by the desiccant, and the dehumidified air is cooled with MegaCool. The desiccant rotor involved in dehumidification is a rotating type, and the surface with adsorbed moisture moves to the opposite side by the rotation of the rotor, where it dries (regenerates) as it passes through outside air heated by the heating coil. Solar or other heat sources can be used to heat the outside air. This dehumidifying and cooling machine harnesses a technology that lowers the humidity load (latent heat) of outdoor air, then vaporizes water indirectly, thereby lowering the temperature (sensible heat) and supplying air indoors that is at comfortable levels of temperature and humidity. |
in preparation Japanese Report | in preparation Japanese Report |
| 052-2101 | Groundwater circulation type geothermal heating and cooling system that prevents clogging of reinjection wells using automatic backwashing technology | Tohochisui Co.,td | This technology uses the geothermal heat of groundwater pumped from pumping wells to cool and heat buildings with heat pumps. Groundwater is returned to the ground via reinjection wells. Automatic backwashing technology is used to prevent clogging of reinjection wells. Environmental benefits include reducing CO2 emissions through energy conservation, mitigating the heat island effect, and preserving groundwater through maintenance of reinjection capacity. | in preparation Japanese Report | in preparation Japanese Report |
| 160-2101 | field cooling mist system | NIPPON TAIIKU SHISETU CO., LTD. | This technology generates a fine mist of 20 to 50 µm in all-weather paved grounds, such as artificial turf and urethane-paved grounds, which can get especially hot in summer. Some of the mist evaporates, and the heat of vaporization lowers the temperature of the outside air of the entire grounds. In addition, players come into direct contact with the mist, which has a cooling effect that lowers their effective temperature. Also, some of the mist settles on the ground, thereby lowering the surface temperature of the grounds. These effects provide users with a pleasant environment for sports. | in preparation Japanese Report | in preparation Japanese Report |
| 140-2101 | Free Float® Steam Traps for Main Lines | TLV. Co.,Ltd． | This technology minimizes steam loss associated with condensate discharge (general disc-type traps: approx. 1.0 kg/h, this product: approx. 0.1 kg/h), contributing to reduction of steam consumption and CO2 in facilities that use steam. Optimal drainage of condensate prevents problems such as water hammer and corrosion caused by remaining condensate, prevents sudden plant shutdowns, and helps cut down on resource wastage and CO2 emissions. | in preparation Japanese Report | in preparation Japanese Report |
| 052-2001 | Geothermal heat utilization system at ZEB at ARIGA PLANNING Head Office in Sapporo, Hokkaido | ARIGA PLANNING Co.,Ltd. | Since the ground is cooler in summer and warmer in winter than the air above it, using the ground as a heat source for air conditioning is more efficient for heating and cooling than using the outside air as a heat source. In addition, since the exhaust heat produced by cooling in the summer is not directly emitted into the open air, this technology can help mitigate the heat island effect. | in preparation Japanese Report | in preparation Japanese Report |
| 140-2002 | H Class Dry Type Amorphous Transformer | JIB ELECTRIC CO.,Ltd. | This technology produces alloys that have irregular molecular arrangements, which can easily be rearranged when the magnetic flux passing through them changes, reducing frictional energy (hysteresis loss). Also, since the film is thin, at less than 30 μm in thickness, the Joule heat (eddy current loss) from the electromotive force induced by the passing magnetic flux is small. Using this amorphous alloy in the iron core of a transformer can reduce these two types of loss, thereby conserving energy and reducing CO2 emissions. | in preparation Japanese Report | in preparation Japanese Report |
| 160-1901 | Viu SYSTEM | SEKISUI SUIJUSHI CORPORATION | This technology is used to three-dimensionally drizzle water to wet the surface of artificial turf fields, which can get especially hot during the summer, thereby lowering the surface temperature through the evapotranspiration effect (generating heat of vaporization). This effect provides users with sports fields that are pleasant to use, and the technology also helps mitigate heat islands. Also, since soft plastic nozzles are used to sprinkle water, the technology is safe to use. | in preparation Japanese Report | in preparation Japanese Report |
| 160-1902 | Dream Turf | SEKISUI SUIJUSHI CORPORATION | This technology reduces the surface temperature of artificial turf fields, which can get especially hot in summer, by reflecting solar radiation with yarns and fillers imbued with solar radiation-reflecting pigments, thereby contributing to measures aimed at mitigating heat islands. In addition, since the molecules are oriented three-dimensionally in a mesh-like pattern and intricately intertwined with each other, the resulting artificial turf is more durable than those that employ a more customary structure. | in preparation Japanese Report | in preparation Japanese Report |
| 052-1901 | Geothermal air conditioning system using underground heat extraction system with underground water circulation at an office facility in Nagano City, Nagano Prefecture | MORIYA CORPORATION | This technology consists of a heating/cooling air conditioning system with two geothermal water-cooled heat pumps. Pumped groundwater is fed in stages (cascading) to two heat exchangers that rely on different heat exchange methods arranged in series as the primary heat source for each heat pump. The first-stage heat exchange system A uses pumped groundwater as the heat source and a plate heat exchanger (heat exchanger A) as the heat source for heat pump A. The second-stage heat exchange system B uses, as the heat exchanger, a groundwater-circulating underground heat extraction/dissipation system that is classified as a ground-coupled underground tank coil heat exchanger. Groundwater that has undergone heat exchange in the first stage is fed to the second stage for the second heat exchange. The heat exchange system is constructed so that a heat exchange tank is installed in shallow ground, slinky heat exchange pipes are layered in gravel filled within the tank, and pumped groundwater is sprayed from the top of the tank, enabling heat to be exchanged between the groundwater and the heat medium. The bottom of the ground heat exchange tank remains open, so the groundwater-circulating underground heat extraction/dissipation system also serves as an infiltration basin that allows groundwater to seep underground. This ensures that pumped groundwater is returned to the ground, recharging its supply. |
in preparation Japanese Report | in preparation Japanese Report |
| Natural environment conservation technology field | |||||
| Verification number | Technology name | Applicant | Technology summary | Verification Reports |
Verification Statements |
| 140-2301 | Restoration Technology of Vegetation by Reuse of Waste Mushroom Beds and Organic Materials "HAMAMIDORI Mat Method" | Green Sangyo Co,Ltd | This technology comes in the form of revegetation-promoting mats of one square meter that contain useful recycled organic materials such as waste mushroom beds in jute (hemp) bags but do not contain seeds. Burying the mats 20 cm below the ground surface supplies moisture and nutrients contained in the mats, thereby encouraging germination and growth of vegetation, and increasing plant cover. The moisture content and EC (electrical conductivity) of the area where the mats were installed were higher than those of the control area, with more moderate soil temperatures in summer compared to the control area as well. This technology creates an encouraging environment for plants to grow and for buried seeds to germinate in the harsh conditions of coastal sandy soil, nurturing native vegetation and conserving the natural environment of the beach. | in preparation Japanese Report | in preparation Japanese Report |
| 140-2204 | Waterweed reaping boat "Aquatic Weed Hunter" | TEQUANATS CO., LTD | This technology features a specialized waterweed-clearing vessel that cuts floating-leaved and floating aquatic plants, etc. with clipper-like harvesting knives, which can then be stored and/or carried out via a conveyor. By using this technology to clear waterweeds efficiently and in large quantities, ecosystems in lakes and marshes can be made more robust. Furthermore, it can help remedy low levels of dissolved oxygen and other problems seen in bodies of water with excessive waterweed growth, making it possible to manage water quality with a view to conservation. Accordingly, this technology is useful for the conservation of natural and aquatic environments. | in preparation Japanese Report | in preparation Japanese Report |
| 090-2001 | Seaweed bed creation / fish-gathering technology using ferromanganese slag | Mizushima FerroAlloy Co.,Ltd. | This technology, when introduced as substitute material for natural stones or rocks in areas where the seafloor is sandy or muddy and lacking in marine vegetation, makes it possible to create seaweed beds. The creation of epiphytic substrates is expected to encourage seaweed and other organisms to attach themselves and grow, and attract fish, thereby forming an ecosystem. | in preparation Japanese Report | in preparation Japanese Report |
| 090-2002 | Fish-gathering technology using artificial stone/rock of ferromanganese slag | Mizushima FerroAlloy Co.,Ltd. | This technology, which creates a substrate for organisms to attach themselves and serves as a hiding place for fish, is intended to be installed in areas where the seafloor is sandy or muddy. This is expected to encourage organisms to attach themselves and grow, and attract fish, thereby forming an ecosystem. | in preparation Japanese Report | in preparation Japanese Report |
| Environment measurement technology field | |||||
| Verification number | Technology name | Applicant | Technology summary | Verification Reports |
Verification Statements |
| 140-2305 | Microplastic automatic preparation device | Shimadzu Corporation | The technology subject to verification is an automatic sample preparation device that performs “oxidation” and “density separation” automatically in a single reaction vessel. Preparing samples automatically with this technology ensures that sample preparation occurs with good reproducibility and empirical results are not affected by the skill level of the worker. This technology will improve the accuracy of empirical data used in studies into the sources and distribution of microplastics (MPs) and environmental conservation measures in MPs pollution and can be expected to have a positive impact on the development of future measures concerning MPs. | English Report | English Report |
| 170-2101 | simplified chemical analysis products for soil "OCTES" | Sakamoto Lime Industry Co., Ltd. | This technology comprises a simple soil diagnosis kit that consists of one plastic capsule containing a single dose of chromogenic agent and a filter necessary for filtration of the sample solution, which makes quick, easy diagnoses possible in outdoor environments. Although it cannot be used to determine whether samples meet environmental standards, it can be utilized for surveys that supplement official inspections, such as surveys of the distribution of contaminated areas, understanding where hot spots exist, and longitudinal surveys. The use of this simple and low-cost technology offers a finer mesh with which to sift through measurements, enabling researchers to grasp the state of relative contamination; it can therefore reduce labor and costs associated with official investigations by enabling the efficient selection of locations to conduct official Japanese (Ministry of the Environment) investigations [measurement methods used for evaluation against environmental standards based on the Basic Act on the Environment (Act No. 91 of 1993) (Environmental Agency Notification No. 46), and measurement methods specified in the measurement methods related to soil elution amounts (Ministry of the Environment Notification No. 18) based on the Soil Contamination Countermeasures Act (Act No. 53 of 2002)]. Since the technology requires neither a power source nor filtration, it can be used effectively in developing countries that lack sufficient infrastructure for precision measurement. |
in preparation Japanese Report | in preparation Japanese Report |
| 170-1901 | Electrodynamic Dust Monitor | KANSAI Automation Co., Ltd. | This technology automatically measures the dust concentration in exhaust gas emitted from smoke-emitting facilities such as factories. It takes the form of a dust concentration measuring device that utilizes the triboelectric effect, in which a probe-shaped electrode is inserted into the exhaust gas and the electrical signal generated when dust particles collide with or pass near the electrode is converted into measured values. |
in preparation Japanese Report | in preparation Japanese Report |