Measurement Data (Sayama Plant)

Measurement Data (Sayama Plant)

Wastes and Substances of Concern

Wastes

More than 99.5 % of emission is subjected to the thermal recycle or material recycle.

　　　　　　　　　　　　
Unit FY2022 FY2023FY2024
Total discharge amount including wastes ton 310.227 272.417 343.27
Sludge kg 247,780 218,630 281,130
Metals(battery) kg 275 589 0
Wood kg 1,510 1,530 1,480
Oil kg 8,939 9,898 9,806
Acid kg 10,228 11,715 14,847
Alkali kg 6,960 4,370 8,060
Glass and ceramics kg 15,830 4,050 14,050
Plastic kg 18,687 21,635 13,901
Other(Low and high concertation PCB waste) kg 18 - -

Water Quality

As to drainage, according to the inspection based on the laws and regulations, there is no abnormality.

Hazardous substance

item Unit Limit Measured value
Cadmium and its compounds mg/l 0.1 < 0.001
Cyanogen compound mg/l 1 < 0.02
Organophosphorus compound
(Only Parathion, methyl parathion, methyl demeton or EPN)		 mg/l 1 < 0.1
Lead and its compounds mg/l 0.1 < 0.01
Hexavalent chromium compounds mg/l 0.5 < 0.005
Arsenic and its compounds mg/l 0.1 < 0.01
Mercury and its compounds mg/l 0.005 < 0.0005
Alkyl mercury compounds - Not to be detected Not detected
Polychlorinated biphenyl mg/l 0.003 < 0.0005
Trichloroethylene mg/l 0.1 < 0.001
Tetrachloroethylene mg/l 0.1 < 0.001
Dichloromethane mg/l 0.2 < 0.002
Carbon tetrachloride mg/l 0.02 < 0.002
1, 2-Dichloroethane mg/l 0.04 < 0.004
1, 1 - Dichloroethane mg/l 1 < 0.02
Cis- 1, 2 - Dichloroethane mg/l 0.4 < 0.04
1, 1, 1 - Trichloroethane mg/l 3 < 0.001
1, 1, 2 ‐ Trichloroethane mg/l 0.06 < 0.001
1, 3 - Dichloropropene mg/l 0.02 < 0.001
Thiuram mg/l 0.06 < 0.006
Simazine mg/l 0.03 < 0.003
Benthiocarb mg/l 0.2 < 0.02
Benzene mg/l 0.1 < 0.01
Selenium and its compounds mg/l 0.1 < 0.01
Boron and its compounds mg/l 10 < 0.2
Fluorine and its compounds mg/l 8 2.2
1, 4 - dioxane mg/l 0.5 < 0.05
Ammonia and its compounds, Nitrous acid and nitric compound mg/l 100 3.8

Other drainage

item Unit Limit Measured value
pH pH 5.8≦ Χ ≤8.6 7.1
BOD mg/l 160 14.4
COD mg/l 160 8.8
SS mg/l 200 7.8
n-Hex (mineral oil) mg/l 5 < 1
Phenols mg/l 5 < 0.5
Copper mg/l 3 < 0.2
Zinc mg/l 2 < 0.05
s-Fe mg/l 10 < 0.3
s-Mn mg/l 10 < 0.1
Nitrogen mg/l 120 12.6
Phosphorus mg/l 16 < 0.06

Related Input material amount

Unit FY2022 FY2023 FY2024
Type A Heavy Oil ℓ 2,400 1,130 1,880
City gas m3 213,540 192,934 206,846
LPG m3 8,430 5,585 5,633
Electric Power MWh 23,203 19,225 20,756
Water m3 240,597 228,097 253,554
Water (Intensity) m3/pcs 0.00135 0.00125 0.00061
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