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Concerning Quantitative Aims for Reducing Industrial Dioxin Emissions |
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September 22, 2000 Hajime Kobayashi
Summary At the Conference on Environmental Pollution Control (chaired by the Prime Minister) held today, a plan was finalized to reduce dioxins released as a result of business activities in Japan. The quantitative aims set by this plan to reduce emissions in the industrial source were based on MITI estimates, as well as on the results obtained from studies conducted at the Conference on Dioxin Policy held on August 30, 2000 (chaired by Masakatsu Hiraoka, professor emeritus at Kyoto University). The following aims have been set for the end of fiscal 2002. * Estimated Annual Industrial Emissions and Reduction Aims (Unit: g-TEQ/year)
Efforts will be made to cut the total amount of emissions generated by the industrial source by more than 40% compared with 1997 levels.
1. Basic Concepts Behind the Estimated Reduction Aims In March 1999, the ministries and agencies that are the members of the Ministerial Council on Dioxin Policy formulated the Basic Guidelines of Japan for the Promotion of Measures against Dioxins, which call for an approximate 90% reduction in total, nationwide dioxin emissions compared with 1997 levels, to be achieved within four years. Setting an aim date of 2002, the plan based its estimates on the observance of emission standards applied to existing sources from December 2002 onward. The calculation methods and data used were based on 1999 estimates of dioxin emissions for a dioxin emissions inventory that was published in June 2000.
2. Methods of Estimating Reduction Aims for Four Main Industries (1) Electric Steelmaking Furnaces [1] Estimated per-unit emissions for 1999 It is estimated that the industry generated 141.5g-TEQ of dioxin emissions while making 29,320,630 tons of the production. The amount of dioxins emitted per ton of the production was therefore 4,825.5ng-TEQ/t.
First, it is assumed that the industry will make the same amount of production in 2002 as it did in 1999 (i.e., 29,320,630 tons). Per-unit emissions, however, are expected to improve to 4,444.8ng-TEQ per ton of the production in 2002; and, multiplied by the total amount of production in 2002, this results in a total emission estimate of 130.3g-TEQ for the year.
[1] Estimated per-unit emissions for 1999 It is estimated that the industry generated 101.3g-TEQ of dioxin emissions while making 99,273,834 tons of the production. The amount of dioxins emitted per ton of the production was therefore 1,020.8ng-TEQ/t.
First, it is assumed that the industry will make the same amount of production in 2002 as it did in 1999 (i.e., 99,273,834 tons). Per-unit emissions, however, are expected to improve to 939.0ng-TEQ per ton of the production in 2002; and, multiplied by the total amount of production in 2002, this results in a total emission estimate of 93.2g-TEQ for the year.
[1] Estimated per-unit emissions for 1999 It is estimated that the industry generated 18.4g-TEQ of dioxin emissions while treating 292,500 tons of the raw materials. The amount of dioxins emitted per ton of the raw materials was therefore 62,696ng-TEQ/t.
First, it is assumed that the industry will treat the same amount of raw materials in 2002 as it did in 1999 (i.e., 292,500 tons). Per-unit emissions, however, are expected to improve to 47,129ng-TEQ per ton of the raw materials in 2002; and, multiplied by the total amount of raw materials in 2002, this results in a total emission estimate of 13.8g-TEQ for the year.
[1] Estimated per-unit emissions for 1999 It is estimated that the industry generated 13.6g-TEQ of dioxin emissions while treating 2,846,000 tons of the raw materials. The amount of dioxins emitted per ton of the raw materials was therefore 4,778.6ng-TEQ/t. [2] Estimates of emission reduction aims for 2002 First, it is assumed that the amount of raw materials in the industry will increase by 2% and the industry will treat the amount of 3,020,000 tons in 2002. Per-unit emissions, however, are expected to improve to 3,907.1ng-TEQ per ton of the raw materials in 2002; and, multiplied by the total amount of raw materials in 2002, this results in a total emission estimate of 11.8g-TEQ for the year. If you have any questions concerning this information, please contact Hajime Kobayashi of the Environmental Protection Guidance Office, Environmental Protection and Industrial Location Bureau, MITI at the following numbers: Phone: 03-3501-1511 (extensions 3071-3075) Direct line: 03-3501-4665 |
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