Completing Construction of a Pilot Wastewater Treatment Facility at Hiroshima Plant– Establishing an advanced wastewater treatment technology to improve the quality of wastewater from chemical plants –
October 14, 2025
Mitsubishi Chemical Corporation (Head Office: Chiyoda-ku, Tokyo; President: Manabu Chikumoto; hereinafter referred to as "MCC") announces that it has completed construction of a pilot facility at its Hiroshima Plant (Otake-shi, Hiroshima Prefecture) to develop an advanced wastewater treatment technology for improving the quality of wastewater from chemical plants.
１．Background and Purpose
In its "Medium-Term Management Plan 2029," MCC set the reduction of COD (Chemical Oxygen Demand)* as a sustainability target related to water resource management, and has worked to reduce COD in wastewater from its chemical plants.
This completed pilot facility aims to establish a cost-competitive, advanced wastewater treatment technology by combining a wide range of solutions that MCC's production engineering and research departments have refined. By horizontally deploying this technology across our domestic and overseas plants, we aim to achieve our COD reduction target for FY2029, and will explore the possibility of commercializing it as a water treatment business in the medium to long term.
２．Facility Overview
・Facility name: Pilot wastewater treatment facility
・Address: 20-1 Miyukicho, Otake-shi, Hiroshima Prefecture (Inside MCC Hiroshima Plant)
・Start of construction: October 2024
・Start of operation: September 2025
・Main functions: (1) Testing under continuous and batch processes
*COD indicates the degree of water pollution caused by organic matter, etc., and is expressed as the concentration of oxygen equivalent to the amount of oxidizing agent consumed during the reaction (oxidation) of the organic matter in water caused by the added agent.
For FY2029, MCC targets a reduction of 310 tons at its domestic plants and group companies (compared to FY2023).
１．Background and Purpose
In its "Medium-Term Management Plan 2029," MCC set the reduction of COD (Chemical Oxygen Demand)* as a sustainability target related to water resource management, and has worked to reduce COD in wastewater from its chemical plants.
This completed pilot facility aims to establish a cost-competitive, advanced wastewater treatment technology by combining a wide range of solutions that MCC's production engineering and research departments have refined. By horizontally deploying this technology across our domestic and overseas plants, we aim to achieve our COD reduction target for FY2029, and will explore the possibility of commercializing it as a water treatment business in the medium to long term.
２．Facility Overview
・Facility name: Pilot wastewater treatment facility
・Address: 20-1 Miyukicho, Otake-shi, Hiroshima Prefecture (Inside MCC Hiroshima Plant)
・Start of construction: October 2024
・Start of operation: September 2025
・Main functions: (1) Testing under continuous and batch processes
(2) Multivariate testing based on variations in wastewater composition, temperature, and pH
(3) Testing combining wastewater treatment technologies
(biological treatment, membrane separation, advanced oxidation process, etc.)
*COD indicates the degree of water pollution caused by organic matter, etc., and is expressed as the concentration of oxygen equivalent to the amount of oxidizing agent consumed during the reaction (oxidation) of the organic matter in water caused by the added agent.
For FY2029, MCC targets a reduction of 310 tons at its domestic plants and group companies (compared to FY2023).
Pilot Wastewater Treatment Facility
