Preventing Environmental Pollution

Goals and Achievements of Major Initiatives

Reduce emissions of VOCs into the air.

Scope of target Japan
Goal for fiscal year 2021 DIC Group (Japan): 345 tonnes (essentially level with fiscal year 2020)
Achievement in fiscal year 2021 DIC Group (Japan): 239 tonnes
Evaluation ★★
Goal for fiscal year 2022 DIC Group (Japan): 325 tonnes (essentially level with fiscal year 2020; down 70% from fiscal year 2000)
  • Evaluations are based on self-evaluations of current progress.
    Key: ★★★ = Excellent; ★★ = Satisfactory; ★ = Still needs work

Policies and Organization

Basic Approach

The DIC Group works to grasp the environmental impact of its operating activities and promotes systematic measures to reduce its environmental footprint. The Group also advances efforts aimed at preventing environmental pollution.

Since chemicals companies handle a considerably greater volume and more diverse range of chemical substances than companies in other industries, they must be extremely vigilant to prevent discharges of substances into the environment. Against this backdrop, the DIC Group promotes systematic efforts to prevent environmental pollution. In Japan, the Group has worked since fiscal year 2005 to reduce emissions into the air, water and soil of substances designated under pertinent laws and regulations in Japan—including the Act on Confirmation, etc. of Release Amounts of Specific Chemical Substances in the Environment and Promotion of Improvements to the Management Thereof, the Soil Contamination Countermeasures Act, the Pollutant Release and Transfer Register (PRTR) Law, the Ozone Layer Protection Law, the Act on Rational Use and Proper Management of Fluorocarbons and the Law Concerning Special Measures for Promotion of Proper Treatment of PCB Wastes—and of substances targeted for management under a voluntary scheme created by the Japan Chemical Industry Association (JCIA.*)

  • The JCIA is a g eneral incorporated association. As one of Japan’s major industry organizations, the JCIA is a m ember of the ICCA and pursues the healthy development of the chemicals industry with other chemical–industrial organizations around the world.

Framework for Promotion

The chair of the Sustainability Committee (the president and CEO) oversees the planning and promotion of environmental conservation initiatives by the Responsible Care Department and by production and R&D site Safety and Environment groups. The Responsible Care Department monitors legal and regulatory trends worldwide to ensure sites are able to comply promptly and effectively.

Principal Initiatives in Fiscal Year 2021

01Reducing Emissions of VOCs

The DIC Group in Japan succeeded in achieving its voluntary target for reducing emissions of VOCs into the air for fiscal year 2010-30% from the fiscal year 2000 level-in fiscal year 2007. Domestic Group companies continue to pursue steady annual reductions through facility improvements and emissions management.
In fiscal year 2021, DIC Group companies in Japan reported total emissions of VOCs of 239 tonnes, a decrease of 27% from fiscal year 2020. The principal factor behind this result was the divestiture of Group company DIC Kako, Inc., a significant emitter of VOCs, as a result of which it was excluded from the scope of calculation. Overseas, Group companies in Greater China and the Asia–Pacific region continued to carefully monitor emissions. In the PRC, in particular, the Group is updating equipment and stepping up emissions management practices in response to the tightening of pertinent local regulations.

Emissions of VOCs (Targeted Chemical Substances) into the Air
  • A PRTR is a scheme for assessing, aggregating and disseminating data on the source of hazardous chemicals, amounts released into the environment and amounts t ransfer red of f-site from industrial establishments via waste products.
  • The “551 substances and one substance group” comprises 462 chemical substances designated by Japan’s PRTR and 89 PRTR-designated substances (other than class 1) and one substance group (chain hydrocarbons with up to 4–8 carbon atoms) targeted for study by the JCIA.

In fiscal year 2021, the DIC Group in Japan monitored discharges of 462 class 1 chemical substances designated by the country’s PRTR and 89 PRTR-designated chemical substances (other than class 1) and one substance group (chain hydrocarbons with up to 4–8 carbon atoms) targeted for study by the JCIA. During the period, DIC and the DIC Group in Japan used and/or produced a combined total of 133 of these substances in amounts exceeding 1.0 tonne.

Number of Targeted Chemical Substances Used and/or Produced in Japan in Amounts Exceeding 1.0 Tonne in Fiscal Year 2021

02Reducing SOx, NOx and COD

Taking fiscal year 1990 as the base year, the DIC Group in Japan has worked to reduce SOx and NOx—key causes of acid rain—from boilers. The Group has also worked to reduce COD, an indicator of environmental impact, in wastewater, particularly by installing biomass boilers and modifying production processes. In fiscal year 2021, emissions of SOx by domestic Group companies were 9 tonnes, a decline of 96% from fiscal year 1990, while emissions of NOx were 186 tonnes, down 8% from the base year. In contrast, the domestic DIC Group’s COD, which has remained on an uptrend since fiscal year 1990, amounted to 940 tonnes, with principal contributing factors including an increase in production volume and changes in the composition of the Group’s product portfolio. The Group will continue taking steps to reduce COD by enhancing water quality management.
Overseas, DIC Group c ompanies are switching from diesel to natural gas, and from diesel- and heavy oil–fired boilers to biomass boilers, at sites with appropriate infrastructure. To reduce COD, the Group is promoting the reuse of water and the installment of environment-friendly closedloop recycling and wastewater treatment systems that purify wastewater to a level that exceeds that mandated by law.

SOx and NOx Emissions Volumes in Japan

SOx and NOx Emissions Volumes in Japan

COD in Japan

COD in Japan

03Complying with Regulations Governing Emissions of Dioxins

The DIC Group monitors emissions of dioxins from facilities in Japan that produce these byproducts, in accordance with the Act on Special Measures Against Dioxins (Act No. 105 of 1999). At present, the Group has six such facilities. Continuous efforts to reduce emissions levels have enabled the Group to achieve results that greatly surpass standards set forth in the Act.

Dioxin Concentrations in Waste Gas and Wastewater Emissions from DIC Group Incinerators in Japan

04Ensuring the Appropriate Collection and Storage of PCBs

In Japan, the DIC Group continues working to ensure the appropriate collection, storage and management of equipment containing polychlorinated biphenyls (PCBs), including older-model transformers, capacitors and stabilizers, in accordance with the Law Concerning Special Measures for Promotion of Proper Treatment of PCB Wastes (Law No. 65 of 2001). The Group also ensures that equipment containing PCBs is disposed of in accordance with the practices of Japan Environmental Storage & Safety Corporation (JESCO). The Group also manages and disposes all other PCB waste in an appropriate manner.

05Responding to Asbestos Risks

The DIC Group in Japan takes care to respond to potential risks associated with asbestos during demolition or when retrofitting equipment, as outlined in the Ordinance on the Prevention of Health Impairment due to Asbestos (Ministry of Health, Labour and Welfare Ordinance No. 21 of 2005) and the revised Air Pollution Control Law.

06Soil and Groundwater Pollution

In addition to complying strictly with the Soil Contamination Countermeasures Act, the DIC Group implements soil and groundwater surveys and countermeasures as necessary and assesses related risks. In fiscal year 2019, a warehouse fire at the Saitama Plant resulted in a section of the plant site being designated under the Act as an “Area for which Changes to Form or Nature Require Notification.” Subsequent soil remediation efforts resulted in this designation being lifted in January 2022. In addition, a voluntary survey conducted at a third site belonging to the Hokuriku Plant resulted in the site being designated as an “Area which Requires Measures.” Purification measures are currently being implemented in line with the Act, as well as with pertinent regulations.

Building a Circular Economy

In recent years, waste plastic and marine plastics, a result of the improper disposal of end-of-life plastic containers and other products, have become issues of major concern worldwide. In Japan, the DIC Group works to prevent pollution of the environment, particularly through measures to preclude leaks of raw materials from production facilities and the recycling of plastic waste generated in production processes. In fiscal year 2020, 46% of waste plastic generated by the Group was recycled. Approximately 92% of this was reused, including in the recovery of energy from fuel utilization.
The building of a circular economy is not something that can be achieved by any one company. Accordingly, key initiatives are being promoted by industrial and public–private partnerships around the world. In Japan, DIC is a member of the Japan Initiative for Marine Environment (JaIME), formed by five chemicals industry organizations, and the Japan Clean Ocean Material Alliance (CLOMA), a Ministry of Economy, Trade and Industry–led alliance of companies in the plastic products supply chain. Overseas, Sun Chemical participates in A Circular Economy for Flexible Packaging (CEFLEX), a consortium working to make flexible packaging in Europe circular, ensuring its ability to access and share the most up-to-date information across the DIC Group. The Company has also organized projects involving various departments concerned with the circular economy to promote the collection of plastics, as well as the shift to alternative and/or biodegradable materials.


PT DIC Astra Chemicals Wins Award Under DKI–Jakarta–Company Environment Performance Appraisal Program.

In fiscal year 2018, PT DIC Astra Chemicals won an award from the Special Capital Region of Jakarta (Daerah Khusus Ibokota Jakarta (DKI Jakarta) in Indonesian) under the DKI–Jakarta–Company Environment Performance Appraisal Program. High marks were given to the company’s efforts to comply with Indonesia’s environmental management laws and related regulations, as well as the excellence of its systems for managing treating industrial effluents and air pollution. These awards are conferred on companies demonstrating excellence in the area of environmental protection based on the results of environmental performance audits of all companies in the special capital region, which are conducted by the Jakarta government. PT DIC ASTRA Chemicals was one of only eight award winners chosen from among more than 1,000 Jakarta-based manufacturers.

DIC’s Kashima Plant installs anaerobic wastewater treatment system

DIC’s Kashima Plant is promoting efforts to increase its wastewater treatment capacity and conserve energy. With the aim of enlarging its wastewater treatment facilities, DIC’s Kashima Plant recently installed a BIOIMPACT® expanded granular sludge blanket (ESGB) anaerobic wastewater treatment system. This system is manufactured by Sumitomo Heavy Industries Environment Co., Ltd. Conventional chemical wastewater treatment systems are aerobic, i.e., require oxygen. In aerobic wastewater treatment systems, activated sludge* is used to break down organic matter in wastewater into CO₂ and water. In contrast, the BIOIMPACT® system uses ESGB, a newly commercialized anaerobic process whereby wastewater is flowed into a tank containing a dense blanket of sludge granules (aggregates of anaerobic microorganisms), which rapidly break down organic matter into methane and CO₂. This innovative system, which also facilitates the reuse of methane produced for plant operation, is attracting considerable attention for its various performance features, which include superb efficiency and minimal space and energy requirements. The Kashima Plant expects the new system to reduce its annual emissions of CO₂ by 720 tons, as well as to significantly lower its operating costs.

Anaerobic wastewater treatment system, BIOIMPACT®, installed in Kashima Plant

Anaerobic wastewater treatment system, BIOIMPACT®, installed in Kashima Plant

Advanced Initiatives in the PRC Earn DIC Green Enterprise Certification

The PRC is reinforcing regulations pertaining to chemical substances with the aim of balancing economic growth and environmental protection. It is against that backdrop that 20 DIC Group companies in the PRC have promoted improvements in their own practices for handling chemical substances based on the Group’s environmental management system to reduce chemical substance emissions, water intake and discharge, waste disposal and energy consumption and have submitted data annually to the relevant authorities.

Green Enterprise certificate

Green Enterprise certificate

These highly transparent initiatives have garnered considerable praise. In June 2012, Nantong DIC Color Co., Ltd., which manufactures organic pigments and printing inks, was certified as a Green Enterprise by the Nantong City Environmental Protection Committee, a designation recognizing companies with environment-friendly business practices. As a consequence, Nantong DIC Color is now seen as a model chemicals plant.