Reliable water infrastructure remains a challenge in Southeast Asia's regional cities and rural areas. Kanadevia developed a “Rapid Fiber Filtration System” to treat high-turbidity raw water, and tested it in Cambodia. The system successfully treated water with very high turbidity levels of up to 547 NTU, generating treated water that met local quality standards. Although changes in raw water quality temporarily affected performance, these issues were effectively resolved through appropriate adjustments. Kanadevia plans to improve system responsiveness, optimize operations, and standardize equipment to reduce costs. These efforts are designed to ensure safe water supply and support sustainable development in the region.

Kanadevia Corporation handles a range of different floating structures, one of which is steel buoys. These buoys are moored in fixed positions at sea with a single mooring line, and their service life is generally ten years. This mooring line is made of chains or wire cables, which, while they are not replaced during the buoy’s service life, are designed to not break even when exposed to wear and corrosion. With these steel buoys, however, greater water depths require longer mooring lines, which increases weight and requires larger floating structures. This requires larger amounts of steel, so Kanadevia has been exploring ways to reduce mooring line size and weight. Consequently, we have developed a catamaran-type buoy that reduces drag from currents and waves on the float, allowing for smaller mooring lines. A catamaran is a type of twin-hulled boat connected by a deck, offering benefits such as reduced drag force from the bow direction and a wide deck area. This report presents some of the development details of these catamaran-type buoys and discusses the effects of using catamaran-type buoys as floating fish reefs.

Backingless penetration bead welding does not use backing material for butt joints; rather, after the weld bead is formed on the back side of the welded area in the first layer, the rest is then layered over the top. This method is an effective technique for butt joints that require full penetration welds. However, to prevent weld defects, the amount of heat input and the feeding rate of weldimg consumables must be appropriately controlled according to the root gap, which changes during the welding process. As this requires advanced welding skills, the process is increasingly being automated. In this development, we clarified the scope of the appropriate welding conditions that can be assumed to prevent defects, and established automatic penetration bead welding and multi-layer welding techniques that adapts groove variations during welding. In addition, we conducted a demonstration test with the goal of applying this to the manufacture of penstocks, and demonstrated that the developed technology can achieve sufficient welding quality and reduce the number of processes.

Prior to Expo 2025 Osaka, Kansai, Japan, Kanadevia Corporation conducted outreach programs for elementary school students as part of the EXPO School Caravan initiative organized by the Secretariat of the Headquarters for the World Expo 2025, Cabinet Secretariat. In these programs, students used remote viewing technology to take virtual field trips to a waste to energy plant’s monitoring facility and presented their predictions about future waste management systems.
This report presents the results of a quantitative text analysis of worksheets collected after the outreach programs, evaluating the effectiveness of the awareness-raising efforts. The analysis revealed that approximately 75% of the students grasped the core message of Expo 2025 Osaka, Kansai, Japan. Additionally, the programs successfully conveyed the importance of hygienic waste treatment and waste reduction through incineration.
The outreach programs provided by our company served as a valuable opportunity for students to reflect on future society and potentially connect these insights to their future actions.

In recent years, fire incidents caused by Lithium-Ion Batteries (LIBs) have been rapidly increasing at waste collection sites and treatment facilities. Current countermeasures primarily rely on early fire suppression technologies using sensors after ignition, and no technology exists to detect and remove LIBs embedded in waste beforehand. This study aims to establish a detection method for LIBs using RFID tags. In the proposed approach, LIB-containing products are labeled with unidirectional RFID tags, which are then detected by a Reader-Writer (R/W). Experiments first confirmed the effectiveness of the unidirectional tags, demonstrating that LIBs can be detected under typical environmental conditions. Notably, detection performance was found to improve in spaces surrounded by metal. Furthermore, considering future social implementation, detection performance was evaluated at the waste collection stage, including small electronic device collection boxes and waste truck loading inlets. These results confirm that LIBs can be effectively detected, provided that RFID tags are attached in advance.