HOME > ENVIRONMENT > REGULATIONS SYSTEM AND RESULTS
REGULATIONS SYSTEM AND RESULTS

Tokushima Environmental Management Committee

Water quality (First effluent)
Items Unit Reg.V. Self-reg.V. Msd.V.
Ave. Max.
Hydrogen-ion concentration pH

5.8∼8.6

 5.9∼8.4 6.5 6.9
Biochemical Oxygen Demand mg/l 20 18 0.9 1.2
Chemical Oxygen Demand mg/l 20 18 2.6 3.8
Suspended matter amount mg/l 30 27 2.7 5.0
n-hexane mg/l 5.0 4.5 0.02 0.03
N/nitrogen content mg/l 40 36 18 23
P / phosphorus content mg/l 2.5 2.25 0.7 1.4
F / fluorine content mg/l 5.0 4.5 <0.08 <0.08
 
Water quality (Second effluent)
Items Unit Reg.V. Self-reg.V. Msd.V.
Ave. Max.
Hydrogen-ion concentration pH

5.8∼8.6

 5.9∼8.4 6.4 6.8
Biochemical Oxygen Demand mg/l

40

 18 0.6 0.7
Chemical Oxygen Demand mg/l 40 18 3.2 4.4
Suspended matter amount mg/l 30 27 3.8 7.0
n-hexane mg/l 3.0 2.7 <1.0 <1.0
N/nitrogen content mg/l 40 36 23 33
P / phosphorus content mg/l 2.5 2.25 0.8 1.2
F / fluorine content mg/l 5.0 5.0 3.4 4.4
 
Gas
Items Unit Reg.V. Self-reg.V. Msd.V.
Ave. Max.
NOx (nitrogen compound) cm3/m3

260

 234 70.5 81
SOx (sulfur compound) m3N/h

K=17.5

 K=15.75 2.00 2.66
Soot and dust g/m3N 0.308 0.278 0.009 0.015

 

Tottori Environmental Management Committee

Water quality
Items Unit Reg.V. Self-reg.V Msd.V.
Ave. Max.
Hydrogen-ion concentration pH

5.0∼9.0

 5.2∼8.8 7.0 7.2
Suspended matter amount mg/l 600 540 2.6 4.0
n-hexane mg/l 5.0 4.5 0.6 0.7
N/nitrogen content mg/l 380 342 72 92
P / phosphorus content mg/l 32 28.8 0.05 0.05
F / fluorine content mg/l 8.0 7.2 4.0 4.7
Cr / chromium content mg/l 2.0 1.8 <0.2 <0.2
Pb / lead mg/l 0.1 0.09 <0.01 <0.01
 
Gas
Items Unit Reg.V. Self-reg.V. Msd.V.
Ave. Max.
NOx (nitrogen compound) cm3/m3

150

 135 88.4 149.5
SOx (sulfur compound) m3N/h

K=17.5

 K=15.75 0.88 2.2
Soot and dust g/m3N 0.25 0.225 0.025 0.08

 

Kanzaki Plant Environmental Management Committee

Water quality
Items Unit Reg.V. Self-reg.V Msd.V.
Ave. Max.
Hydrogen-ion concentration pH

5.8∼8.6

 5.9∼8.4 7.0 8.0
Biochemical Oxygen Demand mg/l 160 144 4.6 14
Chemical Oxygen Demand mg/l 160 144 5.8 15
Suspended matter amount mg/l 200 180 1.6 4.2
n-hexane mg/l 5.0 4.5 <0.5 <0.5
N / nitrogen content mg/l 120 108 5.7 8.4
P / phosphorus content mg/l 2.5 2.25 0.02 0.04

 

Nishiwaki Plant Environmental Management Committee

Water quality
Items Unit Reg.V. Self-reg.V. Msd.V.
Ave. Max.
Hydrogen-ion concentration pH

5.8∼8.6

 5.9∼8.4 7.4 7.8
Biochemical Oxygen Demand mg/l 160 144 1.8 4.5
Chemical Oxygen Demand mg/l 160 144 4.75 9.0
Suspended matter amount mg/l 200 180 2.7 5.0
n-hexane mg/l 5.0 4.5 <0.5 <0.5
 

 

Miyazaki Environmental Management Committee

Water quality (north side gutter)
Items Unit Reg.V. Self-reg.V Msd.V.
Ave. Max.
Hydrogen-ion concentration pH

5.8∼8.6

 5.9∼8.4 8.0 9.2
Biochemical Oxygen Demand mg/l 160 144 1.5 3.2
Chemical Oxygen Demand mg/l 160 144 2.0 3.8
Suspended matter amount mg/l 200 180 4.4 8.0
n-hexane mg/l 5.0 4.5 <0.5 <0.5
N/nitrogen content mg/l 120 108 3.3 4.7
F / fluorine content mg/l 8.0 7.2 0.1 0.1
 
Water quality (south side gutter)
Items Unit Reg.V. Self-reg.V Msd.V.
Ave. Max.
Hydrogen-ion concentration pH

5.8∼8.6

 5.9∼8.4 7.6 8.6
Biochemical Oxygen Demand mg/l 160 144 10.3 22
Chemical Oxygen Demand mg/l 160 144 7.3 12
Suspended matter amount mg/l 200 180 5.5 16
n-hexane mg/l 5.0 4.5 <0.5 <0.5
N/nitrogen content mg/l 120 108 19 58
F / fluorine content mg/l 8.0 7.2 0.8 2.2
Note
Listed measurement values are based on results measured from April 2005 through March 2006
According to the Tottori Environmental Management Committee, NOx levels exceeded our voluntary standard in October 2005. The Miyazaki Environmental Management Committee reported that the hydrogen-ion concentration of water samples taken on July 2005 from the gutter on the north side of the plant exceeded the legal standard, and that of water samples taken on the same day from the gutter on the south side of the plant exceeded our voluntary standard.
Both Committees have identified the causes for exceeding the standards and taken preventive measures. After implementing measures, the Committees carried out measurements and confirmed that there was no problem. Daishinku Group will strengthen the emission/discharge standard compliance management system to ensure that all production plants comply with applicable laws and regulations.