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 FY2015 FY2016 FY2017 FY2018 FY2019
Total discharge amount including wastes ton 247 355 442 454 483
Sludge kg 185,467 289,365 359,416 368,090 392,720
Metals(battery) kg 33 38 64 116 25
Wood kg 2,660 5,010 2,510 2,610 3,720
Oil kg 11,520 11,400 11,193 11,135 9,610
Acid kg 466 479 852 7,648 6,833
Alkali kg 17,336 16,422 19,718 16,070 17,180
Glass and ceramics kg 15,628 19,845 18,310 20,240 25,975
Plastic kg 13,749 12,799 21,291 28,333 27,064
Combustible garbage kg - - - - -
Other(Low and high concertation PCB waste) kg - - 8,407 90 -

Water Quality

As to drainage, according to the inspection based on the laws and regulations, there is no abnormality. Following shows the result of FY2020.

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 < 0.10
Lead and its compounds mg/l 0.1 < 0.01
Hexavalent chromium compounds mg/l 0.5 < 0.01
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 < 0.0003
Trichloroethylene mg/l 0.1 < 0.01
Tetrachloroethylene mg/l 0.1 < 0.01
Dichloromethane mg/l 0.2 < 0.02
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 < 0.3
1, 1, 2 ‐ Trichloroethane mg/l 0.06 < 0.006
1, 3 - Dichloropropene mg/l 0.02 < 0.002
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 2.8
1, 4 - dioxane mg/l 0.5 < 0.05
Ammonia and its compounds, Nitrous acid and nitric compound mg/l 100 7.1

Other drainage

item Unit Limit Measured value
pH pH 5.8≦ Χ ≤8.6 6.6
BOD mg/l 160 13.0
COD mg/l 160 5.7
SS mg/l 200 8.0
n-Hex (mineral oil) mg/l 5 < 1.1
Phenols mg/l 5 < 0.10
Copper mg/l 3 < 0.10
Zinc mg/l 2 < 0.10
s-Fe mg/l 10 < 1.0
s-Mn mg/l 10 < 1.0
Nitrogen mg/l 120 15.6
Phosphorus mg/l 16 < 0.10

Related Input material amount

Unit FY2015 FY2016 FY2017 FY2018 FY2019
Type A Heavy Oil 1,140 1,840 670 1,380 1,040
LPG m3 57,854 65,987 75,250 75,523 95,303
Electric Power MWh 29,983 32,294 36,311 36,475 29,861
Water m3 258,016 195,051 241,712 315,647 308,272
Water (Intensity) m3/pcs 0.00677 0.00199 0.00188 0.00170 0.00400
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