Pollutant Reduction

Chemical Substance Management

Paints and organic solvents are the chemical substances primarily used by Daifuku in its production facilities. The Company manages and controls the usage amounts of special chemical substances on-site as designated under the PRTR Law.*

PRTR Law and related chemical substance quantity control (fiscal 2010)
Shiga Works

Note: The chemicals used in quantities smaller than 100 kg per year were omitted because the amounts were negligible.

Compliance with European harmful substance regulations

The Daifuku Group goes to great lengths to identify and remove any harmful chemicals in its products. The Company formed in-house project teams that are focused solely on the European REACH regulations.** By looking at its entire supply chain, the Company continues to offer products that are uniformly environmentally friendly.

Glossary: *PRTR (Pollutant Release and Transfer Register) Law:
Law asks entities to understand the amount of chemical substances discharged into the environment and to promote improvements in their management of these substances. This law encourages the voluntary management of chemical substances and the prevention of environmental pollution by having enterprises report to their national governing authority the number and volume of chemical substances they are releasing into the environment.; 　; **REACH Regulations:
REACH stands for Registration, Evaluation, Authorization and Restriction of Chemicals. Companies must register and evaluate the safety of chemical substances contained in the products they manufacture and sell in Europe.

Water Quality Management

Water contamination is recognized as a serious problem that can affect soil, agricultural products, living environments and more. Accordingly, meticulous efforts are made to control and reduce drainage, and, of course, relevant laws and regulations are rigorously observed. In fiscal 2010, Daifuku reduced total water use by 39.0% compared to fiscal 2005. This was a 8.0% reduction in water use per unit of net sales.

A water survey

(m³)

	FY2005	FY2006	FY2007	FY2008	FY2009	FY2010
Companywide	306,249	288,079	220,510	193,981	151,410	186,834
Headquarters (Osaka)	10,855	9,881	9,925	12,376	11,995	10,848
Tokyo Head Office	5,619	5,340	5,929	5,381	3,768	3,777
Shiga Works	255,056	253,177	187,679	160,463	123,427	158,329
Komaki Works	32,685	17,673	14,944	12,548	9,410	11,161
Tokai Office	2,034	2,008	2,033	2,229	1,866	1,791
Fujisawa Office	-	-	-	615	686	677
Konosu Office	-	-	-	369	258	251

Result of final effluent quality measurements (fiscal 2010)

Shiga Works (in accordance with the Clean Water Law, Shiga Prefecture ordinance, and Hino Town environmental pollution control agreement)

Measurement item	Regulation value	Results
Measurement item	Regulation value	Max	Min	Avg
Amount of drainage (m³ per day)	-	694	534	634
PH	6.0-8.5	7.7	7.2	7.5
SS (mg/ℓ)	20 or less	0.9	0.6	0.7
COD (mg/ℓ)	20 or less	6.3	2.3	3.3
BOD (mg/ℓ)	20 or less	6.0	1.0	1.8
Total phosphorus (mg/ℓ)	1 or less	0.6	0.3	0.3
Total nitrogen (mg/ℓ)	10 or less	3.8	0.6	1.7

Note: The average value is the weighted average.

Effluent treatment facilities

Effluent before (left) and after treatment

Turning sludge into raw material for cement

At Shiga Works wastewater treatment facility, it is necessary to treat the sludge generated to maintain stable water treatment. The process involves machine drying dewatered sludge drawn from the facility. The end result is dried sludge with a moisture content of only 20%. This has led to a significant reduction in sludge volume, enabling a decrease in waste material treatment costs and effective use of dried sludge as raw material for cement.

Sludge recycling facility

Dried sludge

Prevention of Air Pollution

Based on Ordinance No. 25, Clause 1, of the Ordinance Concerning the Reduction of Impact on the Air Environment of Shiga Prefecture, Shiga Works is designated as a "place of business subject to a plan to reduce its environmental impact on the air." By having a built-in cogeneration system, Daifuku makes efforts to control and reduce smoke-type air pollutants.

Air pollutants (fiscal 2010)

Shiga Works (according to Hino Town environmental pollution control agreement)

Material	Facilities	Regulation value	Actual figures
Material	Facilities	Regulation value	Max	Min	Avg
Dust (g/m³N)	Dynamos	0.1	0.030	0.007	0.013
	Hot water boiler	0.2	0.029	0.005	0.017
	Water cooler⁄heater	0.3	0.014	0.007	0.011
SOx (m³N/h)	Dynamos	2.3	0.200	0.053	0.115
	Hot water boiler	0.57	0.008	0.006	0.007
	Water cooler⁄heater	2.5	0.034	0.006	0.022
NOx (ppm)	Dynamos	950	860	810	842
	Hot water boiler	120	110	100	105
	Water cooler⁄heater	180	90	75	82

↑Top