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[emission] more than 99.5 % of a discharge is subjected to the thermal recycling thermal or the material recycling.
	unit	fy 2013	fy 2014	fy 2015	fy 2016	fy 2017
total discharge amount including waste	ton	266	239	247	355	442
sludge	kg	209,501	183,470	185,467	289,365	359,416
metals (battery)	kg	150	52	33	38	64
wood	kg	2,410	1,340	2,660	5,010	2,510
oil	kg	11,128	11,903	11,520	11,400	11,193
asid	kg	947	638	466	479	852
alkali	kg	15,958	20,449	17,336	16,422	19,718
glass & ceramic	kg	12,980	13,061	15,628	19,845	18,310
plastic	kg	13,903	8,866	13,749	12,799	21,291
burnable waste	kg	-	-	-	-	-
others (low concentration pcb)	kg	-	-	-	-	8,497

[water quality] as to drainage, according to the inspection based on the laws and regulations, there is no problem. below are result of 2017 check.
hazardous substance
	unit	limit	meas't
	unit
cadmium and its compounds	mg/l	0.1	< 0.001
cyanide	mg/l	1	< 0.1
organophosphorus	mg/l	1	< 0.10
lead and its compounds	mg/l	0.1	< 0.05
chromium	mg/l	0.5	< 0.01
arsenic and its compounds	mg/l	0.1	< 0.005
mercury and its compounds	mg/l	0.005	< 0.0005
alkyl mercury compound	-	not to be detected	not to be detected
polychlorinated biphenyl	mg/l	0.003	< 0.0005
trichloroethylene	mg/l	0.1	< 0.002
tetrachloroethylene	mg/l	0.1	< 0.0005
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 - dichloroethylene	mg/l	1	< 0.02
cis - 1, 2 - dichloroethylene	mg/l	0.4	< 0.04
1, 1, 1 - trichloroethane	mg/l	3	< 0.0005
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
simazin	mg/l	0.03	< 0.001
benthiocarb	mg/l	0.2	< 0.002
benzene	mg/l	0.1	< 0.01
selenium and its compounds	mg/l	0.1	< 0.02
boron and its compounds	mg/l	10	< 0.1
fluorine and its compounds	mg/l	8	5.1
1, 4 - dioxane	mg/l	0.5	< 0.05
ammonia and its compounds	mg/l	100	9.1

other drainage
	unit	limit	meas't
	unit
ph	ph	5.8≤ χ ≤8.6	7.4
bod	mg/l	160	34.6
cod	mg/l	160	8
ss	mg/l	200	7.2
n-hex (mineral oil)	mg/l	5	< 1.0
phenol	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	1.6
phosphorus	mg/l	16	< 0.10